From 0f45aa84b33b7a9bfeb41845c723dc51f82f1cf0 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Wed, 4 Sep 2013 15:20:06 +0530 Subject: [PATCH 001/523] regulator: palmas: fix the n_voltages for smps to 122 With the following change --------- commit ad02e846878ca35e9d3fa584be8ee770e9e14fce Author: Axel Lin regulator: palmas: Return raw register values as the selectors in [get|set]_voltage_sel Don't adjust the selector in [get|set]_voltage_sel, fix it in list_voltage() instead. For smps*(except smps10), the vsel reg-value and voltage mapping as below: ---------- The list_voltage() takes the true value of selector which is programmed in the register. As per smsp voltage table reg-value volt (uV) ( Assume RANGE is x1 ) 0 0 1 500000 2 500000 3 500000 4 500000 5 500000 6 500000 (0.49V + 1 * 0.01V) * RANGE 7 510000 (0.49V + 2 * 0.01V) * RANGE 8 520000 (0.49V + 3 * 0.01V) * RANGE 9 530000 (0.49V + 4 * 0.01V) * RANGE .... 121 1650000 (0.49V + 116 * 0.1) * RANGE Hence making n_voltages for smps to 122. Signed-off-by: Laxman Dewangan Signed-off-by: Mark Brown --- drivers/regulator/palmas-regulator.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c index 488dfe7ce9a6..cb65c6f6b0b3 100644 --- a/drivers/regulator/palmas-regulator.c +++ b/drivers/regulator/palmas-regulator.c @@ -207,7 +207,7 @@ static unsigned int palmas_smps_ramp_delay[4] = {0, 10000, 5000, 2500}; * * So they are basically (maxV-minV)/stepV */ -#define PALMAS_SMPS_NUM_VOLTAGES 117 +#define PALMAS_SMPS_NUM_VOLTAGES 122 #define PALMAS_SMPS10_NUM_VOLTAGES 2 #define PALMAS_LDO_NUM_VOLTAGES 50 From 087d30e3049bf86909895ef227f0893b8f710f38 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Tue, 10 Sep 2013 16:48:07 +0530 Subject: [PATCH 002/523] regulator: palmas: configure enable time for LDOs As per datasheet (Referred TPS65913), the on-time for LDO is 500micro second. If LDO6 is in vibrator mode then the on-time is 2000us. Set the enable_time on regulator descriptor accordingly. Signed-off-by: Laxman Dewangan Signed-off-by: Mark Brown --- drivers/regulator/palmas-regulator.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c index cb65c6f6b0b3..fba4faa422b8 100644 --- a/drivers/regulator/palmas-regulator.c +++ b/drivers/regulator/palmas-regulator.c @@ -979,6 +979,7 @@ static int palmas_regulators_probe(struct platform_device *pdev) pmic->desc[id].min_uV = 900000; pmic->desc[id].uV_step = 50000; pmic->desc[id].linear_min_sel = 1; + pmic->desc[id].enable_time = 500; pmic->desc[id].vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, palmas_regs_info[id].vsel_addr); @@ -997,6 +998,11 @@ static int palmas_regulators_probe(struct platform_device *pdev) pmic->desc[id].min_uV = 450000; pmic->desc[id].uV_step = 25000; } + + /* LOD6 in vibrator mode will have enable time 2000us */ + if (pdata && pdata->ldo6_vibrator && + (id == PALMAS_REG_LDO6)) + pmic->desc[id].enable_time = 2000; } else { pmic->desc[id].n_voltages = 1; pmic->desc[id].ops = &palmas_ops_extreg; From e8cb204c675e05105ab2c93c73c57607e09d6b41 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Mon, 9 Sep 2013 13:49:26 +0200 Subject: [PATCH 003/523] regulator: da9063: Fix PTR_ERR/ERR_PTR mismatch MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If CONFIG_OF=n: drivers/regulator/da9063-regulator.c: In function ‘da9063_parse_regulators_dt’: drivers/regulator/da9063-regulator.c:712: warning: passing argument 1 of ‘PTR_ERR’ makes pointer from integer without a cast drivers/regulator/da9063-regulator.c:712: warning: return makes pointer from integer without a cast Use ERR_PTR() to encode an error code in a pointer. PTR_ERR() is meant to decode an error code from a pointer. Signed-off-by: Geert Uytterhoeven Signed-off-by: Mark Brown --- drivers/regulator/da9063-regulator.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/da9063-regulator.c b/drivers/regulator/da9063-regulator.c index 1a7816390773..b9f2653e4ef9 100644 --- a/drivers/regulator/da9063-regulator.c +++ b/drivers/regulator/da9063-regulator.c @@ -709,7 +709,7 @@ static struct da9063_regulators_pdata *da9063_parse_regulators_dt( struct of_regulator_match **da9063_reg_matches) { da9063_reg_matches = NULL; - return PTR_ERR(-ENODEV); + return ERR_PTR(-ENODEV); } #endif From ae10e7e8f1c9d021c8daca750d743cc3baa12e6d Mon Sep 17 00:00:00 2001 From: Liam Girdwood Date: Fri, 13 Sep 2013 18:09:45 +0100 Subject: [PATCH 004/523] ASoC: core: Only add platform DAI widgets once. Currently platform CPU DAI widgets are created in soc_probe_platform and soc_probe_link_dais. Remove the extra call in soc_probe_link_dais(). Signed-off-by: Liam Girdwood Signed-off-by: Mark Brown --- sound/soc/soc-core.c | 1 - 1 file changed, 1 deletion(-) diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 4d0561312f3b..1a38be0d0ca8 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1380,7 +1380,6 @@ static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order) return -ENODEV; list_add(&cpu_dai->dapm.list, &card->dapm_list); - snd_soc_dapm_new_dai_widgets(&cpu_dai->dapm, cpu_dai); } if (cpu_dai->driver->probe) { From f8d7b13e14357ed19d2ca2799539600418dc3939 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 13 Sep 2013 10:52:14 +0300 Subject: [PATCH 005/523] ASoC: max98095: a couple array underflows The ->put() function are called from snd_ctl_elem_write() with user supplied data. The limit checks here could underflow leading to a crash. Signed-off-by: Dan Carpenter Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- sound/soc/codecs/max98095.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/max98095.c b/sound/soc/codecs/max98095.c index 41cdd1642970..8dbcacd44e6a 100644 --- a/sound/soc/codecs/max98095.c +++ b/sound/soc/codecs/max98095.c @@ -1863,7 +1863,7 @@ static int max98095_put_eq_enum(struct snd_kcontrol *kcontrol, struct max98095_pdata *pdata = max98095->pdata; int channel = max98095_get_eq_channel(kcontrol->id.name); struct max98095_cdata *cdata; - int sel = ucontrol->value.integer.value[0]; + unsigned int sel = ucontrol->value.integer.value[0]; struct max98095_eq_cfg *coef_set; int fs, best, best_val, i; int regmask, regsave; @@ -2016,7 +2016,7 @@ static int max98095_put_bq_enum(struct snd_kcontrol *kcontrol, struct max98095_pdata *pdata = max98095->pdata; int channel = max98095_get_bq_channel(codec, kcontrol->id.name); struct max98095_cdata *cdata; - int sel = ucontrol->value.integer.value[0]; + unsigned int sel = ucontrol->value.integer.value[0]; struct max98095_biquad_cfg *coef_set; int fs, best, best_val, i; int regmask, regsave; From d63733aed90b432e5cc489ddfa28e342f91b4652 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 13 Sep 2013 10:53:36 +0300 Subject: [PATCH 006/523] ASoC: ab8500-codec: info leak in anc_status_control_put() If the user passes an invalid value it leads to an info leak when we print the error message or it could oops. This is called with user supplied data from snd_ctl_elem_write(). Signed-off-by: Dan Carpenter Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- sound/soc/codecs/ab8500-codec.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/sound/soc/codecs/ab8500-codec.c b/sound/soc/codecs/ab8500-codec.c index b8ba0adacfce..80555d7551e6 100644 --- a/sound/soc/codecs/ab8500-codec.c +++ b/sound/soc/codecs/ab8500-codec.c @@ -1225,13 +1225,18 @@ static int anc_status_control_put(struct snd_kcontrol *kcontrol, struct ab8500_codec_drvdata *drvdata = dev_get_drvdata(codec->dev); struct device *dev = codec->dev; bool apply_fir, apply_iir; - int req, status; + unsigned int req; + int status; dev_dbg(dev, "%s: Enter.\n", __func__); mutex_lock(&drvdata->anc_lock); req = ucontrol->value.integer.value[0]; + if (req >= ARRAY_SIZE(enum_anc_state)) { + status = -EINVAL; + goto cleanup; + } if (req != ANC_APPLY_FIR_IIR && req != ANC_APPLY_FIR && req != ANC_APPLY_IIR) { dev_err(dev, "%s: ERROR: Unsupported status to set '%s'!\n", From d967967e8d1116fb38bad25e58714b5dddd03cca Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 13 Sep 2013 10:52:49 +0300 Subject: [PATCH 007/523] ASoC: 88pm860x: array overflow in snd_soc_put_volsw_2r_st() This is called from snd_ctl_elem_write() with user supplied data so we need to add some bounds checking. Signed-off-by: Dan Carpenter Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- sound/soc/codecs/88pm860x-codec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sound/soc/codecs/88pm860x-codec.c b/sound/soc/codecs/88pm860x-codec.c index 8af04343cc1a..259d1ac4492f 100644 --- a/sound/soc/codecs/88pm860x-codec.c +++ b/sound/soc/codecs/88pm860x-codec.c @@ -349,6 +349,9 @@ static int snd_soc_put_volsw_2r_st(struct snd_kcontrol *kcontrol, val = ucontrol->value.integer.value[0]; val2 = ucontrol->value.integer.value[1]; + if (val >= ARRAY_SIZE(st_table) || val2 >= ARRAY_SIZE(st_table)) + return -EINVAL; + err = snd_soc_update_bits(codec, reg, 0x3f, st_table[val].m); if (err < 0) return err; From 0a3658cccdf5326ea508efeb1879b0e2508bb0c3 Mon Sep 17 00:00:00 2001 From: Peng Chen Date: Fri, 30 Aug 2013 17:41:40 +0800 Subject: [PATCH 008/523] Bluetooth: Add a new PID/VID 0cf3/e005 for AR3012. usb device info: T: Bus=06 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 15 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0cf3 ProdID=e005 Rev= 0.02 C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms Cc: Stable Signed-off-by: Peng Chen Signed-off-by: Gustavo Padovan --- drivers/bluetooth/ath3k.c | 2 ++ drivers/bluetooth/btusb.c | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c index a12b923bbaca..0a327f4154a2 100644 --- a/drivers/bluetooth/ath3k.c +++ b/drivers/bluetooth/ath3k.c @@ -85,6 +85,7 @@ static struct usb_device_id ath3k_table[] = { { USB_DEVICE(0x04CA, 0x3008) }, { USB_DEVICE(0x13d3, 0x3362) }, { USB_DEVICE(0x0CF3, 0xE004) }, + { USB_DEVICE(0x0CF3, 0xE005) }, { USB_DEVICE(0x0930, 0x0219) }, { USB_DEVICE(0x0489, 0xe057) }, { USB_DEVICE(0x13d3, 0x3393) }, @@ -126,6 +127,7 @@ static struct usb_device_id ath3k_blist_tbl[] = { { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 }, diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 8e16f0af6358..e5beb6e0e1f5 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -148,6 +148,7 @@ static struct usb_device_id blacklist_table[] = { { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 }, From f8776218e8546397be64ad2bc0ebf4748522d6e3 Mon Sep 17 00:00:00 2001 From: Andre Guedes Date: Wed, 31 Jul 2013 16:25:28 -0300 Subject: [PATCH 009/523] Bluetooth: Fix security level for peripheral role While playing the peripheral role, the host gets a LE Long Term Key Request Event from the controller when a connection is established with a bonded device. The host then informs the LTK which should be used for the connection. Once the link is encrypted, the host gets an Encryption Change Event. Therefore we should set conn->pending_sec_level instead of conn-> sec_level in hci_le_ltk_request_evt. This way, conn->sec_level is properly updated in hci_encrypt_change_evt. Moreover, since we have a LTK associated to the device, we have at least BT_SECURITY_MEDIUM security level. Cc: Stable Signed-off-by: Andre Guedes Signed-off-by: Gustavo Padovan --- net/bluetooth/hci_event.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 94aab73f89d4..04967248f899 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -3557,7 +3557,9 @@ static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb) cp.handle = cpu_to_le16(conn->handle); if (ltk->authenticated) - conn->sec_level = BT_SECURITY_HIGH; + conn->pending_sec_level = BT_SECURITY_HIGH; + else + conn->pending_sec_level = BT_SECURITY_MEDIUM; hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); From 89cbb4da0abee2f39d75f67f9fd57f7410c8b65c Mon Sep 17 00:00:00 2001 From: Andre Guedes Date: Wed, 31 Jul 2013 16:25:29 -0300 Subject: [PATCH 010/523] Bluetooth: Fix encryption key size for peripheral role This patch fixes the connection encryption key size information when the host is playing the peripheral role. We should set conn->enc_key_ size in hci_le_ltk_request_evt, otherwise it is left uninitialized. Cc: Stable Signed-off-by: Andre Guedes Signed-off-by: Gustavo Padovan --- net/bluetooth/hci_event.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 04967248f899..8db3e89fae35 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -3561,6 +3561,8 @@ static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb) else conn->pending_sec_level = BT_SECURITY_MEDIUM; + conn->enc_key_size = ltk->enc_size; + hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); if (ltk->type & HCI_SMP_STK) { From 38a172bef8c93ecbfd69715fd88396988e4073fd Mon Sep 17 00:00:00 2001 From: Raphael Kubo da Costa Date: Mon, 2 Sep 2013 14:57:51 +0300 Subject: [PATCH 011/523] Bluetooth: Add support for BCM20702A0 [0b05, 17cb] Yet another vendor specific ID for this chipset; this one for the ASUS USB-BT400 Bluetooth 4.0 adapter. T: Bus=03 Lev=02 Prnt=02 Port=01 Cnt=01 Dev#= 6 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0b05 ProdID=17cb Rev=01.12 S: Manufacturer=Broadcom Corp S: Product=BCM20702A0 S: SerialNumber=000272C64400 C: #Ifs= 4 Cfg#= 1 Atr=a0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) I: If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) I: If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) I: If#= 3 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none) Cc: stable@vger.kernel.org Signed-off-by: Raphael Kubo da Costa Signed-off-by: Gustavo Padovan --- drivers/bluetooth/btusb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index e5beb6e0e1f5..3221a55dddad 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -102,6 +102,7 @@ static struct usb_device_id btusb_table[] = { /* Broadcom BCM20702A0 */ { USB_DEVICE(0x0b05, 0x17b5) }, + { USB_DEVICE(0x0b05, 0x17cb) }, { USB_DEVICE(0x04ca, 0x2003) }, { USB_DEVICE(0x0489, 0xe042) }, { USB_DEVICE(0x413c, 0x8197) }, From 330b6c1521d76d8b88513fbafe18709ad86dafc4 Mon Sep 17 00:00:00 2001 From: Syam Sidhardhan Date: Tue, 6 Aug 2013 01:59:12 +0900 Subject: [PATCH 012/523] Bluetooth: Fix ACL alive for long in case of non pariable devices For certain devices (ex: HID mouse), support for authentication, pairing and bonding is optional. For such devices, the ACL alive for too long after the L2CAP disconnection. To avoid the ACL alive for too long after L2CAP disconnection, reset the ACL disconnect timeout back to HCI_DISCONN_TIMEOUT during L2CAP connect. While merging the commit id:a9ea3ed9b71cc3271dd59e76f65748adcaa76422 this issue might have introduced. Hcidump info: sh-4.1# /opt/hcidump -Xt 2013-08-05 16:49:00.894129 < ACL data: handle 12 flags 0x00 dlen 12 L2CAP(s): Disconn req: dcid 0x004a scid 0x0041 2013-08-05 16:49:00.894195 < HCI Command: Exit Sniff Mode (0x02|0x0004) plen 2 handle 12 2013-08-05 16:49:00.894269 < ACL data: handle 12 flags 0x00 dlen 12 L2CAP(s): Disconn req: dcid 0x0049 scid 0x0040 2013-08-05 16:49:00.895645 > HCI Event: Command Status (0x0f) plen 4 Exit Sniff Mode (0x02|0x0004) status 0x00 ncmd 1 2013-08-05 16:49:00.934391 > HCI Event: Mode Change (0x14) plen 6 status 0x00 handle 12 mode 0x00 interval 0 Mode: Active 2013-08-05 16:49:00.936592 > HCI Event: Number of Completed Packets (0x13) plen 5 handle 12 packets 2 2013-08-05 16:49:00.951577 > ACL data: handle 12 flags 0x02 dlen 12 L2CAP(s): Disconn rsp: dcid 0x004a scid 0x0041 2013-08-05 16:49:00.952820 > ACL data: handle 12 flags 0x02 dlen 12 L2CAP(s): Disconn rsp: dcid 0x0049 scid 0x0040 2013-08-05 16:49:00.969165 > HCI Event: Mode Change (0x14) plen 6 status 0x00 handle 12 mode 0x02 interval 50 Mode: Sniff 2013-08-05 16:49:48.175533 > HCI Event: Mode Change (0x14) plen 6 status 0x00 handle 12 mode 0x00 interval 0 Mode: Active 2013-08-05 16:49:48.219045 > HCI Event: Mode Change (0x14) plen 6 status 0x00 handle 12 mode 0x02 interval 108 Mode: Sniff 2013-08-05 16:51:00.968209 < HCI Command: Disconnect (0x01|0x0006) plen 3 handle 12 reason 0x13 Reason: Remote User Terminated Connection 2013-08-05 16:51:00.969056 > HCI Event: Command Status (0x0f) plen 4 Disconnect (0x01|0x0006) status 0x00 ncmd 1 2013-08-05 16:51:01.013495 > HCI Event: Mode Change (0x14) plen 6 status 0x00 handle 12 mode 0x00 interval 0 Mode: Active 2013-08-05 16:51:01.073777 > HCI Event: Disconn Complete (0x05) plen 4 status 0x00 handle 12 reason 0x16 Reason: Connection Terminated by Local Host ============================ After fix ================================ 2013-08-05 16:57:35.986648 < ACL data: handle 11 flags 0x00 dlen 12 L2CAP(s): Disconn req: dcid 0x004c scid 0x0041 2013-08-05 16:57:35.986713 < HCI Command: Exit Sniff Mode (0x02|0x0004) plen 2 handle 11 2013-08-05 16:57:35.986785 < ACL data: handle 11 flags 0x00 dlen 12 L2CAP(s): Disconn req: dcid 0x004b scid 0x0040 2013-08-05 16:57:35.988110 > HCI Event: Command Status (0x0f) plen 4 Exit Sniff Mode (0x02|0x0004) status 0x00 ncmd 1 2013-08-05 16:57:36.030714 > HCI Event: Mode Change (0x14) plen 6 status 0x00 handle 11 mode 0x00 interval 0 Mode: Active 2013-08-05 16:57:36.032950 > HCI Event: Number of Completed Packets (0x13) plen 5 handle 11 packets 2 2013-08-05 16:57:36.047926 > ACL data: handle 11 flags 0x02 dlen 12 L2CAP(s): Disconn rsp: dcid 0x004c scid 0x0041 2013-08-05 16:57:36.049200 > ACL data: handle 11 flags 0x02 dlen 12 L2CAP(s): Disconn rsp: dcid 0x004b scid 0x0040 2013-08-05 16:57:36.065509 > HCI Event: Mode Change (0x14) plen 6 status 0x00 handle 11 mode 0x02 interval 50 Mode: Sniff 2013-08-05 16:57:40.052006 < HCI Command: Disconnect (0x01|0x0006) plen 3 handle 11 reason 0x13 Reason: Remote User Terminated Connection 2013-08-05 16:57:40.052869 > HCI Event: Command Status (0x0f) plen 4 Disconnect (0x01|0x0006) status 0x00 ncmd 1 2013-08-05 16:57:40.104731 > HCI Event: Mode Change (0x14) plen 6 status 0x00 handle 11 mode 0x00 interval 0 Mode: Active 2013-08-05 16:57:40.146935 > HCI Event: Disconn Complete (0x05) plen 4 status 0x00 handle 11 reason 0x16 Reason: Connection Terminated by Local Host Signed-off-by: Sang-Ki Park Signed-off-by: Chan-yeol Park Signed-off-by: Jaganath Kanakkassery Signed-off-by: Szymon Janc Signed-off-by: Syam Sidhardhan Signed-off-by: Gustavo Padovan --- net/bluetooth/l2cap_core.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index b3bb7bca8e60..63fa11109a1c 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -3755,6 +3755,13 @@ static struct l2cap_chan *l2cap_connect(struct l2cap_conn *conn, sk = chan->sk; + /* For certain devices (ex: HID mouse), support for authentication, + * pairing and bonding is optional. For such devices, inorder to avoid + * the ACL alive for too long after L2CAP disconnection, reset the ACL + * disc_timeout back to HCI_DISCONN_TIMEOUT during L2CAP connect. + */ + conn->hcon->disc_timeout = HCI_DISCONN_TIMEOUT; + bacpy(&bt_sk(sk)->src, conn->src); bacpy(&bt_sk(sk)->dst, conn->dst); chan->psm = psm; From 4f8ec173775fc732075cce78bd2c30660259c14c Mon Sep 17 00:00:00 2001 From: Valentin Ilie Date: Sat, 14 Sep 2013 02:20:37 +0300 Subject: [PATCH 013/523] ASoC: blackfin: Add missing break statement to bf6xx SNDRV_PCM_FORMAT_S8 isn't supposed to fall through to SNDRV_PCM_FORMAT_S16_LE Signed-off-by: Valentin Ilie Signed-off-by: Mark Brown --- sound/soc/blackfin/bf6xx-i2s.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/blackfin/bf6xx-i2s.c b/sound/soc/blackfin/bf6xx-i2s.c index c02405cc007d..5810a0603f2f 100644 --- a/sound/soc/blackfin/bf6xx-i2s.c +++ b/sound/soc/blackfin/bf6xx-i2s.c @@ -88,6 +88,7 @@ static int bfin_i2s_hw_params(struct snd_pcm_substream *substream, case SNDRV_PCM_FORMAT_S8: param.spctl |= 0x70; sport->wdsize = 1; + break; case SNDRV_PCM_FORMAT_S16_LE: param.spctl |= 0xf0; sport->wdsize = 2; From ae3e101286df40cdde49c4737e2868289ed7f35b Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Thu, 12 Sep 2013 09:38:12 +0800 Subject: [PATCH 014/523] regulator: palmas: Remove wrong comment for the equation calculating num_voltages Current equation on the comment is wrong. For linear mapping starting from 0, the equation is (maxV-minV)/stepV + 1. Since the linear mapping for PALMAS is not all starting from 0, the equation on the comment is not useful and misleading. Thus remove it. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- drivers/regulator/palmas-regulator.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c index fba4faa422b8..7e2b165972e6 100644 --- a/drivers/regulator/palmas-regulator.c +++ b/drivers/regulator/palmas-regulator.c @@ -201,12 +201,6 @@ static unsigned int palmas_smps_ramp_delay[4] = {0, 10000, 5000, 2500}; #define SMPS_CTRL_MODE_ECO 0x02 #define SMPS_CTRL_MODE_PWM 0x03 -/* These values are derived from the data sheet. And are the number of steps - * where there is a voltage change, the ranges at beginning and end of register - * max/min values where there are no change are ommitted. - * - * So they are basically (maxV-minV)/stepV - */ #define PALMAS_SMPS_NUM_VOLTAGES 122 #define PALMAS_SMPS10_NUM_VOLTAGES 2 #define PALMAS_LDO_NUM_VOLTAGES 50 From d71505b6672c438af37771e92c24c1d73e943f8c Mon Sep 17 00:00:00 2001 From: Josh Boyer Date: Wed, 4 Sep 2013 10:32:50 -0400 Subject: [PATCH 015/523] edma: Update author email address Matt's @ti.com address bounces. Update the MODULE_AUTHOR information in edma.c to his Linaro address. Signed-off-by: Josh Boyer Acked-by: Matt Porter Signed-off-by: Vinod Koul --- drivers/dma/edma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index ff50ff4c6a57..098a8da450f0 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -749,6 +749,6 @@ static void __exit edma_exit(void) } module_exit(edma_exit); -MODULE_AUTHOR("Matt Porter "); +MODULE_AUTHOR("Matt Porter "); MODULE_DESCRIPTION("TI EDMA DMA engine driver"); MODULE_LICENSE("GPL v2"); From c2b9e974e6bfef52a250ea57684a6f70e4c8275a Mon Sep 17 00:00:00 2001 From: Josh Boyer Date: Wed, 4 Sep 2013 09:32:03 -0400 Subject: [PATCH 016/523] dma/Kconfig: Make TI_EDMA select TI_PRIV_EDMA The TI_EDMA driver unconditionally calls functions provided by the TI_PRIV_EDMA code, but it doesn't force that to be built-in. If that isn't otherwise enabled somewhere, you can get build errors like: linux-3.12.0-0.rc0.git1.1.fc21.armv7hl/drivers/dma/edma.c:593: undefined reference to `edma_free_slot' drivers/built-in.o: In function `edma_terminate_all': linux-3.12.0-0.rc0.git1.1.fc21.armv7hl/drivers/dma/edma.c:169: undefined reference to `edma_stop' drivers/built-in.o: In function `edma_execute': linux-3.12.0-0.rc0.git1.1.fc21.armv7hl/drivers/dma/edma.c:122: undefined reference to `edma_write_slot' linux-3.12.0-0.rc0.git1.1.fc21.armv7hl/drivers/dma/edma.c:149: undefined reference to `edma_link' linux-3.12.0-0.rc0.git1.1.fc21.armv7hl/drivers/dma/edma.c:152: undefined reference to `edma_start' Make TI_EDMA select TI_PRIV_EDMA to avoid this. Signed-off-by: Josh Boyer Acked-by: Matt Porter Signed-off-by: Vinod Koul --- drivers/dma/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index 526ec77c7ba0..f238cfd33847 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -198,6 +198,7 @@ config TI_EDMA depends on ARCH_DAVINCI || ARCH_OMAP select DMA_ENGINE select DMA_VIRTUAL_CHANNELS + select TI_PRIV_EDMA default n help Enable support for the TI EDMA controller. This DMA From 7c2330f1afe13b3a934140857bc8060d00103a89 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 16 Sep 2013 18:08:02 -0700 Subject: [PATCH 017/523] regulator: fix fatal kernel-doc error Fix fatal kernel-doc error in : Error(include/linux/regulator/driver.h:52): cannot understand prototype: 'struct regulator_linear_range ' Signed-off-by: Randy Dunlap [Rewrote first line -- broonie] Signed-off-by: Mark Brown --- include/linux/regulator/driver.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 67e13aa5a478..9bdad43ad228 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -40,6 +40,8 @@ enum regulator_status { }; /** + * struct regulator_linear_range - specify linear voltage ranges + * * Specify a range of voltages for regulator_map_linar_range() and * regulator_list_linear_range(). * From faea13b72dbdb77e4d6ad83344596486611708b0 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 21 Aug 2013 09:33:30 +0100 Subject: [PATCH 018/523] iommu/arm-smmu: fix a signedness bug Unsigned char is never equal to -1. Cc: Tested-by: Will Deacon Signed-off-by: Dan Carpenter Signed-off-by: Will Deacon --- drivers/iommu/arm-smmu.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index f417e89e1e7e..7243af3b891f 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -377,6 +377,7 @@ struct arm_smmu_cfg { u32 cbar; pgd_t *pgd; }; +#define INVALID_IRPTNDX 0xff #define ARM_SMMU_CB_ASID(cfg) ((cfg)->cbndx) #define ARM_SMMU_CB_VMID(cfg) ((cfg)->cbndx + 1) @@ -840,7 +841,7 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain, if (IS_ERR_VALUE(ret)) { dev_err(smmu->dev, "failed to request context IRQ %d (%u)\n", root_cfg->irptndx, irq); - root_cfg->irptndx = -1; + root_cfg->irptndx = INVALID_IRPTNDX; goto out_free_context; } @@ -869,7 +870,7 @@ static void arm_smmu_destroy_domain_context(struct iommu_domain *domain) writel_relaxed(0, cb_base + ARM_SMMU_CB_SCTLR); arm_smmu_tlb_inv_context(root_cfg); - if (root_cfg->irptndx != -1) { + if (root_cfg->irptndx != INVALID_IRPTNDX) { irq = smmu->irqs[smmu->num_global_irqs + root_cfg->irptndx]; free_irq(irq, domain); } From 6614ee77f49d37f9bb77eb3e81431ca8fcc4042e Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 21 Aug 2013 09:34:20 +0100 Subject: [PATCH 019/523] iommu/arm-smmu: fix iommu_present() test in init The extra semi-colon on the end breaks the test. Cc: Tested-by: Will Deacon Signed-off-by: Dan Carpenter Signed-off-by: Will Deacon --- drivers/iommu/arm-smmu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 7243af3b891f..913bd1565e41 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1967,10 +1967,10 @@ static int __init arm_smmu_init(void) return ret; /* Oh, for a proper bus abstraction */ - if (!iommu_present(&platform_bus_type)); + if (!iommu_present(&platform_bus_type)) bus_set_iommu(&platform_bus_type, &arm_smmu_ops); - if (!iommu_present(&amba_bustype)); + if (!iommu_present(&amba_bustype)) bus_set_iommu(&amba_bustype, &arm_smmu_ops); return 0; From fd90cecbde065eac6ecc3ef38abace725ad27010 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Wed, 21 Aug 2013 13:56:34 +0100 Subject: [PATCH 020/523] iommu/arm-smmu: don't enable SMMU device until probing has completed We currently reset and enable the SMMU before the device has finished being probed, so if we fail later on (for example, because we couldn't request a global irq successfully) then we will leave the device in an active state. This patch delays the reset and enabling of the SMMU hardware until probing has completed. Cc: Signed-off-by: Will Deacon --- drivers/iommu/arm-smmu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 913bd1565e41..181c9ba929cd 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1858,8 +1858,6 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev) goto out_put_parent; } - arm_smmu_device_reset(smmu); - for (i = 0; i < smmu->num_global_irqs; ++i) { err = request_irq(smmu->irqs[i], arm_smmu_global_fault, @@ -1877,6 +1875,8 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev) spin_lock(&arm_smmu_devices_lock); list_add(&smmu->list, &arm_smmu_devices); spin_unlock(&arm_smmu_devices_lock); + + arm_smmu_device_reset(smmu); return 0; out_free_irqs: From cfd29aa0e81b791985e8428e6507e80e074e6730 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 10 Sep 2013 12:50:48 +0200 Subject: [PATCH 021/523] serial: tegra: fix tty-kref leak Fix potential tty-kref leak in stop_rx path. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Tested-by: Stephen Warren Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/serial-tegra.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c index d0d972f7e43e..0489a2bdcdf9 100644 --- a/drivers/tty/serial/serial-tegra.c +++ b/drivers/tty/serial/serial-tegra.c @@ -732,7 +732,7 @@ static irqreturn_t tegra_uart_isr(int irq, void *data) static void tegra_uart_stop_rx(struct uart_port *u) { struct tegra_uart_port *tup = to_tegra_uport(u); - struct tty_struct *tty = tty_port_tty_get(&tup->uport.state->port); + struct tty_struct *tty; struct tty_port *port = &u->state->port; struct dma_tx_state state; unsigned long ier; @@ -744,6 +744,8 @@ static void tegra_uart_stop_rx(struct uart_port *u) if (!tup->rx_in_progress) return; + tty = tty_port_tty_get(&tup->uport.state->port); + tegra_uart_wait_sym_time(tup, 1); /* wait a character interval */ ier = tup->ier_shadow; From fc0919c68cb2f75bb1af759315f9d7e2a9443c28 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 10 Sep 2013 12:50:49 +0200 Subject: [PATCH 022/523] serial: pch_uart: fix tty-kref leak in rx-error path Fix tty-kref leak introduced by commit 384e301e ("pch_uart: fix a deadlock when pch_uart as console") which never put its tty reference. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/pch_uart.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index 52379e56a31e..f0161d6ccc5c 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -1098,6 +1098,8 @@ static void pch_uart_err_ir(struct eg20t_port *priv, unsigned int lsr) if (tty == NULL) { for (i = 0; error_msg[i] != NULL; i++) dev_err(&priv->pdev->dev, error_msg[i]); + } else { + tty_kref_put(tty); } } From 19b85cfb190eb9980eaf416bff96aef4159a430e Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 10 Sep 2013 12:50:50 +0200 Subject: [PATCH 023/523] serial: pch_uart: fix tty-kref leak in dma-rx path Fix tty_kref leak when tty_buffer_request room fails in dma-rx path. Note that the tty ref isn't really needed anymore, but as the leak has always been there, fixing it before removing should makes it easier to backport the fix. Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/pch_uart.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index f0161d6ccc5c..2c5a3e4a17db 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -685,11 +685,12 @@ static int dma_push_rx(struct eg20t_port *priv, int size) dev_warn(port->dev, "Rx overrun: dropping %u bytes\n", size - room); if (!room) - return room; + goto out; tty_insert_flip_string(tport, sg_virt(&priv->sg_rx), size); port->icount.rx += room; +out: tty_kref_put(tty); return room; From 0b53861230729f60a4a02a838fb51a2345b16f71 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 10 Sep 2013 12:50:51 +0200 Subject: [PATCH 024/523] serial: pch_uart: remove unnecessary tty_port_tty_get Remove unused tty-reference from dma-rx path which was left after the recent tty-port conversions. Also remove a redundant port initialisation while at it. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/pch_uart.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index 2c5a3e4a17db..44077c0b7670 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -667,31 +667,21 @@ static int pop_tx_x(struct eg20t_port *priv, unsigned char *buf) static int dma_push_rx(struct eg20t_port *priv, int size) { - struct tty_struct *tty; int room; struct uart_port *port = &priv->port; struct tty_port *tport = &port->state->port; - port = &priv->port; - tty = tty_port_tty_get(tport); - if (!tty) { - dev_dbg(priv->port.dev, "%s:tty is busy now", __func__); - return 0; - } - room = tty_buffer_request_room(tport, size); if (room < size) dev_warn(port->dev, "Rx overrun: dropping %u bytes\n", size - room); if (!room) - goto out; + return 0; tty_insert_flip_string(tport, sg_virt(&priv->sg_rx), size); port->icount.rx += room; -out: - tty_kref_put(tty); return room; } From 93a8d4163ecd3fd8aac264707f1d497f193ea88d Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Tue, 17 Sep 2013 12:34:14 -0400 Subject: [PATCH 025/523] n_tty: Fix EOF push index when termios changes Commit 40d5e0905a03601d40cd4e46b8690093c2355d03, 'n_tty: Fix EOF push handling' introduced a subtle state change error wrt EOF push handling when the termios is changed from non-canonical to canonical mode. Reset line_start to the current read_tail index, not 0. Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/n_tty.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index c9a9ddd1d0bc..01bf5eb4f238 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1758,8 +1758,7 @@ static void n_tty_set_termios(struct tty_struct *tty, struct ktermios *old) canon_change = (old->c_lflag ^ tty->termios.c_lflag) & ICANON; if (canon_change) { bitmap_zero(ldata->read_flags, N_TTY_BUF_SIZE); - ldata->line_start = 0; - ldata->canon_head = ldata->read_tail; + ldata->line_start = ldata->canon_head = ldata->read_tail; ldata->erasing = 0; ldata->lnext = 0; } From 1374a430f81a67c5c594c3f3c84c58845ed7caec Mon Sep 17 00:00:00 2001 From: Bin Liu Date: Tue, 17 Sep 2013 12:43:13 -0500 Subject: [PATCH 026/523] usb: musb: fix otg default state Right after the musb_hdrc driver is loaded, the otg default state is a_idle, and Mode=Host, which are set by musb_host_setup(). This causes the following kernel message during musb gadget enumeration. CAUTION: musb: Babble Interrupt Occurred This patch sets the otg default state to b_idle, and its Mode to Peripheral. It has been validated on TI AM335x GP EVM USB0 port with g_zero. Signed-off-by: Bin Liu Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_gadget.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index 9a08679d204d..58c029f1e74c 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -1790,6 +1790,10 @@ int musb_gadget_setup(struct musb *musb) musb->g.max_speed = USB_SPEED_HIGH; musb->g.speed = USB_SPEED_UNKNOWN; + MUSB_DEV_MODE(musb); + musb->xceiv->otg->default_a = 0; + musb->xceiv->state = OTG_STATE_B_IDLE; + /* this "gadget" abstracts/virtualizes the controller */ musb->g.name = musb_driver_name; musb->g.is_otg = 1; From c89efa731e70a12908a0c155518ebbfd2d6ca605 Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Tue, 17 Sep 2013 19:16:38 +0100 Subject: [PATCH 027/523] ARM: 7836/1: add __get_user_unaligned/__put_user_unaligned BTRFS is now relying on those since v3.12-rc1. Signed-off-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/include/asm/uaccess.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h index 7e1f76027f66..72abdc541f38 100644 --- a/arch/arm/include/asm/uaccess.h +++ b/arch/arm/include/asm/uaccess.h @@ -19,6 +19,13 @@ #include #include +#if __LINUX_ARM_ARCH__ < 6 +#include +#else +#define __get_user_unaligned __get_user +#define __put_user_unaligned __put_user +#endif + #define VERIFY_READ 0 #define VERIFY_WRITE 1 From bde52788bdb755b9e4b75db6c434f30e32a0ca0b Mon Sep 17 00:00:00 2001 From: Maxim Patlasov Date: Fri, 13 Sep 2013 19:19:54 +0400 Subject: [PATCH 028/523] fuse: wait for writeback in fuse_file_fallocate() The patch fixes a race between mmap-ed write and fallocate(PUNCH_HOLE): 1) An user makes a page dirty via mmap-ed write. 2) The user performs fallocate(2) with mode == PUNCH_HOLE|KEEP_SIZE and covering the page. 3) Before truncate_pagecache_range call from fuse_file_fallocate, the page goes to write-back. The page is fully processed by fuse_writepage (including end_page_writeback on the page), but fuse_flush_writepages did nothing because fi->writectr < 0. 4) truncate_pagecache_range is called and fuse_file_fallocate is finishing by calling fuse_release_nowrite. The latter triggers processing queued write-back request which will write stale data to the hole soon. Changed in v2 (thanks to Brian for suggestion): - Do not truncate page cache until FUSE_FALLOCATE succeeded. Otherwise, we can end up in returning -ENOTSUPP while user data is already punched from page cache. Use filemap_write_and_wait_range() instead. Changed in v3 (thanks to Miklos for suggestion): - fuse_wait_on_writeback() is prone to livelocks; use fuse_set_nowrite() instead. So far as we need a dirty-page barrier only, fuse_sync_writes() should be enough. - rebased to for-linus branch of fuse.git Signed-off-by: Maxim Patlasov Signed-off-by: Miklos Szeredi Cc: stable@vger.kernel.org --- fs/fuse/file.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index d409deafc67b..f9f07c4fa517 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -2484,8 +2484,15 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset, if (lock_inode) { mutex_lock(&inode->i_mutex); - if (mode & FALLOC_FL_PUNCH_HOLE) - fuse_set_nowrite(inode); + if (mode & FALLOC_FL_PUNCH_HOLE) { + loff_t endbyte = offset + length - 1; + err = filemap_write_and_wait_range(inode->i_mapping, + offset, endbyte); + if (err) + goto out; + + fuse_sync_writes(inode); + } } req = fuse_get_req_nopages(fc); @@ -2520,11 +2527,8 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset, fuse_invalidate_attr(inode); out: - if (lock_inode) { - if (mode & FALLOC_FL_PUNCH_HOLE) - fuse_release_nowrite(inode); + if (lock_inode) mutex_unlock(&inode->i_mutex); - } return err; } From 0ab08f576b9e6a6b689fc6b4e632079b978e619b Mon Sep 17 00:00:00 2001 From: Maxim Patlasov Date: Fri, 13 Sep 2013 19:20:16 +0400 Subject: [PATCH 029/523] fuse: fix fallocate vs. ftruncate race A former patch introducing FUSE_I_SIZE_UNSTABLE flag provided detailed description of races between ftruncate and anyone who can extend i_size: > 1. As in the previous scenario fuse_dentry_revalidate() discovered that i_size > changed (due to our own fuse_do_setattr()) and is going to call > truncate_pagecache() for some 'new_size' it believes valid right now. But by > the time that particular truncate_pagecache() is called ... > 2. fuse_do_setattr() returns (either having called truncate_pagecache() or > not -- it doesn't matter). > 3. The file is extended either by write(2) or ftruncate(2) or fallocate(2). > 4. mmap-ed write makes a page in the extended region dirty. This patch adds necessary bits to fuse_file_fallocate() to protect from that race. Signed-off-by: Maxim Patlasov Signed-off-by: Miklos Szeredi Cc: stable@vger.kernel.org --- fs/fuse/file.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index f9f07c4fa517..4598345ab87d 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -2467,6 +2467,7 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset, { struct fuse_file *ff = file->private_data; struct inode *inode = file->f_inode; + struct fuse_inode *fi = get_fuse_inode(inode); struct fuse_conn *fc = ff->fc; struct fuse_req *req; struct fuse_fallocate_in inarg = { @@ -2495,6 +2496,9 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset, } } + if (!(mode & FALLOC_FL_KEEP_SIZE)) + set_bit(FUSE_I_SIZE_UNSTABLE, &fi->state); + req = fuse_get_req_nopages(fc); if (IS_ERR(req)) { err = PTR_ERR(req); @@ -2527,6 +2531,9 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset, fuse_invalidate_attr(inode); out: + if (!(mode & FALLOC_FL_KEEP_SIZE)) + clear_bit(FUSE_I_SIZE_UNSTABLE, &fi->state); + if (lock_inode) mutex_unlock(&inode->i_mutex); From 700870119f49084da004ab588ea2b799689efaf7 Mon Sep 17 00:00:00 2001 From: Josh Boyer Date: Thu, 18 Apr 2013 07:51:34 -0700 Subject: [PATCH 030/523] x86, efi: Don't map Boot Services on i386 Add patch to fix 32bit EFI service mapping (rhbz 726701) Multiple people are reporting hitting the following WARNING on i386, WARNING: at arch/x86/mm/ioremap.c:102 __ioremap_caller+0x3d3/0x440() Modules linked in: Pid: 0, comm: swapper Not tainted 3.9.0-rc7+ #95 Call Trace: [] warn_slowpath_common+0x5f/0x80 [] ? __ioremap_caller+0x3d3/0x440 [] ? __ioremap_caller+0x3d3/0x440 [] warn_slowpath_null+0x1d/0x20 [] __ioremap_caller+0x3d3/0x440 [] ? get_usage_chars+0xfb/0x110 [] ? vprintk_emit+0x147/0x480 [] ? efi_enter_virtual_mode+0x1e4/0x3de [] ioremap_cache+0x1a/0x20 [] ? efi_enter_virtual_mode+0x1e4/0x3de [] efi_enter_virtual_mode+0x1e4/0x3de [] start_kernel+0x286/0x2f4 [] ? repair_env_string+0x51/0x51 [] i386_start_kernel+0x12c/0x12f Due to the workaround described in commit 916f676f8 ("x86, efi: Retain boot service code until after switching to virtual mode") EFI Boot Service regions are mapped for a period during boot. Unfortunately, with the limited size of the i386 direct kernel map it's possible that some of the Boot Service regions will not be directly accessible, which causes them to be ioremap()'d, triggering the above warning as the regions are marked as E820_RAM in the e820 memmap. There are currently only two situations where we need to map EFI Boot Service regions, 1. To workaround the firmware bug described in 916f676f8 2. To access the ACPI BGRT image but since we haven't seen an i386 implementation that requires either, this simple fix should suffice for now. [ Added to changelog - Matt ] Reported-by: Bryan O'Donoghue Acked-by: Tom Zanussi Acked-by: Darren Hart Cc: Josh Triplett Cc: Matthew Garrett Cc: H. Peter Anvin Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Greg Kroah-Hartman Cc: Signed-off-by: Josh Boyer Signed-off-by: Matt Fleming --- arch/x86/platform/efi/efi.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 90f6ed127096..c7e22ab29a5a 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -912,10 +912,13 @@ void __init efi_enter_virtual_mode(void) for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { md = p; - if (!(md->attribute & EFI_MEMORY_RUNTIME) && - md->type != EFI_BOOT_SERVICES_CODE && - md->type != EFI_BOOT_SERVICES_DATA) - continue; + if (!(md->attribute & EFI_MEMORY_RUNTIME)) { +#ifdef CONFIG_X86_64 + if (md->type != EFI_BOOT_SERVICES_CODE && + md->type != EFI_BOOT_SERVICES_DATA) +#endif + continue; + } size = md->num_pages << EFI_PAGE_SHIFT; end = md->phys_addr + size; From 54afa99057ee2ffd3df0f5e891298bbbb65ea63c Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 4 Sep 2013 17:10:39 +0000 Subject: [PATCH 031/523] CIFS: FS-Cache: Uncache unread pages in cifs_readpages() before freeing them In cifs_readpages(), we may decide we don't want to read a page after all - but the page may already have passed through fscache_read_or_alloc_pages() and thus have marks and reservations set. Thus we have to call fscache_readpages_cancel() or fscache_uncache_page() on the pages we're returning to clear the marks. NFS, AFS and 9P should be unaffected by this as they call read_cache_pages() which does the cleanup for you. Signed-off-by: David Howells Reviewed-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/file.c | 8 ++++++++ fs/cifs/fscache.c | 7 +++++++ fs/cifs/fscache.h | 13 +++++++++++++ 3 files changed, 28 insertions(+) diff --git a/fs/cifs/file.c b/fs/cifs/file.c index eb955b525e55..7ddddf2e2504 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -3254,6 +3254,9 @@ static int cifs_readpages(struct file *file, struct address_space *mapping, /* * Reads as many pages as possible from fscache. Returns -ENOBUFS * immediately if the cookie is negative + * + * After this point, every page in the list might have PG_fscache set, + * so we will need to clean that up off of every page we don't use. */ rc = cifs_readpages_from_fscache(mapping->host, mapping, page_list, &num_pages); @@ -3376,6 +3379,11 @@ static int cifs_readpages(struct file *file, struct address_space *mapping, kref_put(&rdata->refcount, cifs_readdata_release); } + /* Any pages that have been shown to fscache but didn't get added to + * the pagecache must be uncached before they get returned to the + * allocator. + */ + cifs_fscache_readpages_cancel(mapping->host, page_list); return rc; } diff --git a/fs/cifs/fscache.c b/fs/cifs/fscache.c index 2f4bc5a58054..b3258f35e88a 100644 --- a/fs/cifs/fscache.c +++ b/fs/cifs/fscache.c @@ -223,6 +223,13 @@ void __cifs_readpage_to_fscache(struct inode *inode, struct page *page) fscache_uncache_page(CIFS_I(inode)->fscache, page); } +void __cifs_fscache_readpages_cancel(struct inode *inode, struct list_head *pages) +{ + cifs_dbg(FYI, "%s: (fsc: %p, i: %p)\n", + __func__, CIFS_I(inode)->fscache, inode); + fscache_readpages_cancel(CIFS_I(inode)->fscache, pages); +} + void __cifs_fscache_invalidate_page(struct page *page, struct inode *inode) { struct cifsInodeInfo *cifsi = CIFS_I(inode); diff --git a/fs/cifs/fscache.h b/fs/cifs/fscache.h index 63539323e0b9..24794b6cd8ec 100644 --- a/fs/cifs/fscache.h +++ b/fs/cifs/fscache.h @@ -54,6 +54,7 @@ extern int __cifs_readpages_from_fscache(struct inode *, struct address_space *, struct list_head *, unsigned *); +extern void __cifs_fscache_readpages_cancel(struct inode *, struct list_head *); extern void __cifs_readpage_to_fscache(struct inode *, struct page *); @@ -91,6 +92,13 @@ static inline void cifs_readpage_to_fscache(struct inode *inode, __cifs_readpage_to_fscache(inode, page); } +static inline void cifs_fscache_readpages_cancel(struct inode *inode, + struct list_head *pages) +{ + if (CIFS_I(inode)->fscache) + return __cifs_fscache_readpages_cancel(inode, pages); +} + #else /* CONFIG_CIFS_FSCACHE */ static inline int cifs_fscache_register(void) { return 0; } static inline void cifs_fscache_unregister(void) {} @@ -131,6 +139,11 @@ static inline int cifs_readpages_from_fscache(struct inode *inode, static inline void cifs_readpage_to_fscache(struct inode *inode, struct page *page) {} +static inline void cifs_fscache_readpages_cancel(struct inode *inode, + struct list_head *pages) +{ +} + #endif /* CONFIG_CIFS_FSCACHE */ #endif /* _CIFS_FSCACHE_H */ From 9ae6cf606a33b0a762798df0fb742848bcc685b5 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 16 Sep 2013 11:23:45 -0400 Subject: [PATCH 032/523] cifs: stop trying to use virtual circuits Currently, we try to ensure that we use vcnum of 0 on the first established session on a connection and then try to use a different vcnum on each session after that. This is a little odd, since there's no real reason to use a different vcnum for each SMB session. I can only assume there was some confusion between SMB sessions and VCs. That's somewhat understandable since they both get created during SESSION_SETUP, but the documentation indicates that they are really orthogonal. The comment on max_vcs in particular looks quite misguided. An SMB session is already uniquely identified by the SMB UID value -- there's no need to again uniquely ID with a VC. Furthermore, a vcnum of 0 is a cue to the server that it should release any resources that were previously held by the client. This sounds like a good thing, until you consider that: a) it totally ignores the fact that other programs on the box (e.g. smbclient) might have connections established to the server. Using a vcnum of 0 causes them to get kicked off. b) it causes problems with NAT. If several clients are connected to the same server via the same NAT'ed address, whenever one connects to the server it kicks off all the others, which then reconnect and kick off the first one...ad nauseum. I don't see any reason to ignore the advice in "Implementing CIFS" which has a comprehensive treatment of virtual circuits. In there, it states "...and contrary to the specs the client should always use a VcNumber of one, never zero." Have the client just use a hardcoded vcnum of 1, and stop abusing the special behavior of vcnum 0. Reported-by: Sauron99@gmx.de Signed-off-by: Jeff Layton Reviewed-by: Volker Lendecke Signed-off-by: Steve French --- fs/cifs/cifsglob.h | 4 --- fs/cifs/cifssmb.c | 1 - fs/cifs/sess.c | 84 +--------------------------------------------- 3 files changed, 1 insertion(+), 88 deletions(-) diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index cfa14c80ef3b..9c72be6fb0df 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -547,9 +547,6 @@ struct TCP_Server_Info { unsigned int max_rw; /* maxRw specifies the maximum */ /* message size the server can send or receive for */ /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ - unsigned int max_vcs; /* maximum number of smb sessions, at least - those that can be specified uniquely with - vcnumbers */ unsigned int capabilities; /* selective disabling of caps by smb sess */ int timeAdj; /* Adjust for difference in server time zone in sec */ __u64 CurrentMid; /* multiplex id - rotating counter */ @@ -715,7 +712,6 @@ struct cifs_ses { enum statusEnum status; unsigned overrideSecFlg; /* if non-zero override global sec flags */ __u16 ipc_tid; /* special tid for connection to IPC share */ - __u16 vcnum; char *serverOS; /* name of operating system underlying server */ char *serverNOS; /* name of network operating system of server */ char *serverDomain; /* security realm of server */ diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index a3d74fea1623..4baf35949b51 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -463,7 +463,6 @@ decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr) cifs_max_pending); set_credits(server, server->maxReq); server->maxBuf = le16_to_cpu(rsp->MaxBufSize); - server->max_vcs = le16_to_cpu(rsp->MaxNumberVcs); /* even though we do not use raw we might as well set this accurately, in case we ever find a need for it */ if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) { diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c index 5f99b7f19e78..352358de1d7e 100644 --- a/fs/cifs/sess.c +++ b/fs/cifs/sess.c @@ -32,88 +32,6 @@ #include #include "cifs_spnego.h" -/* - * Checks if this is the first smb session to be reconnected after - * the socket has been reestablished (so we know whether to use vc 0). - * Called while holding the cifs_tcp_ses_lock, so do not block - */ -static bool is_first_ses_reconnect(struct cifs_ses *ses) -{ - struct list_head *tmp; - struct cifs_ses *tmp_ses; - - list_for_each(tmp, &ses->server->smb_ses_list) { - tmp_ses = list_entry(tmp, struct cifs_ses, - smb_ses_list); - if (tmp_ses->need_reconnect == false) - return false; - } - /* could not find a session that was already connected, - this must be the first one we are reconnecting */ - return true; -} - -/* - * vc number 0 is treated specially by some servers, and should be the - * first one we request. After that we can use vcnumbers up to maxvcs, - * one for each smb session (some Windows versions set maxvcs incorrectly - * so maxvc=1 can be ignored). If we have too many vcs, we can reuse - * any vc but zero (some servers reset the connection on vcnum zero) - * - */ -static __le16 get_next_vcnum(struct cifs_ses *ses) -{ - __u16 vcnum = 0; - struct list_head *tmp; - struct cifs_ses *tmp_ses; - __u16 max_vcs = ses->server->max_vcs; - __u16 i; - int free_vc_found = 0; - - /* Quoting the MS-SMB specification: "Windows-based SMB servers set this - field to one but do not enforce this limit, which allows an SMB client - to establish more virtual circuits than allowed by this value ... but - other server implementations can enforce this limit." */ - if (max_vcs < 2) - max_vcs = 0xFFFF; - - spin_lock(&cifs_tcp_ses_lock); - if ((ses->need_reconnect) && is_first_ses_reconnect(ses)) - goto get_vc_num_exit; /* vcnum will be zero */ - for (i = ses->server->srv_count - 1; i < max_vcs; i++) { - if (i == 0) /* this is the only connection, use vc 0 */ - break; - - free_vc_found = 1; - - list_for_each(tmp, &ses->server->smb_ses_list) { - tmp_ses = list_entry(tmp, struct cifs_ses, - smb_ses_list); - if (tmp_ses->vcnum == i) { - free_vc_found = 0; - break; /* found duplicate, try next vcnum */ - } - } - if (free_vc_found) - break; /* we found a vcnumber that will work - use it */ - } - - if (i == 0) - vcnum = 0; /* for most common case, ie if one smb session, use - vc zero. Also for case when no free vcnum, zero - is safest to send (some clients only send zero) */ - else if (free_vc_found == 0) - vcnum = 1; /* we can not reuse vc=0 safely, since some servers - reset all uids on that, but 1 is ok. */ - else - vcnum = i; - ses->vcnum = vcnum; -get_vc_num_exit: - spin_unlock(&cifs_tcp_ses_lock); - - return cpu_to_le16(vcnum); -} - static __u32 cifs_ssetup_hdr(struct cifs_ses *ses, SESSION_SETUP_ANDX *pSMB) { __u32 capabilities = 0; @@ -128,7 +46,7 @@ static __u32 cifs_ssetup_hdr(struct cifs_ses *ses, SESSION_SETUP_ANDX *pSMB) CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4, USHRT_MAX)); pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); - pSMB->req.VcNumber = get_next_vcnum(ses); + pSMB->req.VcNumber = __constant_cpu_to_le16(1); /* Now no need to set SMBFLG_CASELESS or obsolete CANONICAL PATH */ From abe511ac85de60f6d6ce1272b91c079d73bf8517 Mon Sep 17 00:00:00 2001 From: Jisheng Zhang Date: Tue, 27 Aug 2013 12:41:14 +0800 Subject: [PATCH 033/523] ARM: mvebu: add missing of_node_put() to fix reference leak Add of_node_put to properly decrement the refcount when we are done using a given node. Signed-off-by: Jisheng Zhang Reviewed-by: Ezequiel Garcia Signed-off-by: Jason Cooper Conflicts: arch/arm/mach-mvebu/armada-370-xp.c arch/arm/mach-mvebu/platsmp.c --- arch/arm/mach-mvebu/coherency.c | 8 +++++++- arch/arm/mach-mvebu/pmsu.c | 1 + arch/arm/mach-mvebu/system-controller.c | 1 + 3 files changed, 9 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-mvebu/coherency.c b/arch/arm/mach-mvebu/coherency.c index 4c24303ec481..58adf2fd9cfc 100644 --- a/arch/arm/mach-mvebu/coherency.c +++ b/arch/arm/mach-mvebu/coherency.c @@ -140,6 +140,7 @@ int __init coherency_init(void) coherency_base = of_iomap(np, 0); coherency_cpu_base = of_iomap(np, 1); set_cpu_coherent(cpu_logical_map(smp_processor_id()), 0); + of_node_put(np); } return 0; @@ -147,9 +148,14 @@ int __init coherency_init(void) static int __init coherency_late_init(void) { - if (of_find_matching_node(NULL, of_coherency_table)) + struct device_node *np; + + np = of_find_matching_node(NULL, of_coherency_table); + if (np) { bus_register_notifier(&platform_bus_type, &mvebu_hwcc_platform_nb); + of_node_put(np); + } return 0; } diff --git a/arch/arm/mach-mvebu/pmsu.c b/arch/arm/mach-mvebu/pmsu.c index 3cc4bef6401c..27fc4f049474 100644 --- a/arch/arm/mach-mvebu/pmsu.c +++ b/arch/arm/mach-mvebu/pmsu.c @@ -67,6 +67,7 @@ int __init armada_370_xp_pmsu_init(void) pr_info("Initializing Power Management Service Unit\n"); pmsu_mp_base = of_iomap(np, 0); pmsu_reset_base = of_iomap(np, 1); + of_node_put(np); } return 0; diff --git a/arch/arm/mach-mvebu/system-controller.c b/arch/arm/mach-mvebu/system-controller.c index f875124ff4f9..5175083cdb34 100644 --- a/arch/arm/mach-mvebu/system-controller.c +++ b/arch/arm/mach-mvebu/system-controller.c @@ -98,6 +98,7 @@ static int __init mvebu_system_controller_init(void) BUG_ON(!match); system_controller_base = of_iomap(np, 0); mvebu_sc = (struct mvebu_system_controller *)match->data; + of_node_put(np); } return 0; From 4ec7fc4abb554c6c9b0eda81ad1c9cb82c29aa79 Mon Sep 17 00:00:00 2001 From: Jisheng Zhang Date: Tue, 27 Aug 2013 12:41:15 +0800 Subject: [PATCH 034/523] bus: mvebu: add missing of_node_put() to fix reference leak Add of_node_put to properly decrement the refcount when we are done using a given node. Signed-off-by: Jisheng Zhang Reviewed-by: Ezequiel Garcia Signed-off-by: Jason Cooper Conflicts: drivers/bus/mvebu-mbus.c --- drivers/bus/mvebu-mbus.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c index 19ab6ff53d59..553185318963 100644 --- a/drivers/bus/mvebu-mbus.c +++ b/drivers/bus/mvebu-mbus.c @@ -700,6 +700,7 @@ static int __init mvebu_mbus_common_init(struct mvebu_mbus_state *mbus, phys_addr_t sdramwins_phys_base, size_t sdramwins_size) { + struct device_node *np; int win; mbus->mbuswins_base = ioremap(mbuswins_phys_base, mbuswins_size); @@ -712,8 +713,11 @@ static int __init mvebu_mbus_common_init(struct mvebu_mbus_state *mbus, return -ENOMEM; } - if (of_find_compatible_node(NULL, NULL, "marvell,coherency-fabric")) + np = of_find_compatible_node(NULL, NULL, "marvell,coherency-fabric"); + if (np) { mbus->hw_io_coherency = 1; + of_node_put(np); + } for (win = 0; win < mbus->soc->num_wins; win++) mvebu_mbus_disable_window(mbus, win); From 2290414be0c9e360f5909ae0e33f6a2df3980f14 Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Fri, 13 Sep 2013 22:09:52 +0200 Subject: [PATCH 035/523] ARM: Kirkwood: Add missing DT reg property to cpu@0 The kirkwood.dtsi cpu@0 node is missing the mandatory reg property. This causes of_get_cpu_node() to fail to find the node and as a result the cpufreq driver fails in its probe function. Signed-off-by: Andrew Lunn Signed-off-by: Jason Cooper --- arch/arm/boot/dts/kirkwood.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/kirkwood.dtsi b/arch/arm/boot/dts/kirkwood.dtsi index cf7aeaf89e9c..858099f5b966 100644 --- a/arch/arm/boot/dts/kirkwood.dtsi +++ b/arch/arm/boot/dts/kirkwood.dtsi @@ -13,6 +13,7 @@ cpu@0 { device_type = "cpu"; compatible = "marvell,feroceon"; + reg = <0>; clocks = <&core_clk 1>, <&core_clk 3>, <&gate_clk 11>; clock-names = "cpu_clk", "ddrclk", "powersave"; }; From c1bbd430d617faa2bc610c5404486b01d72c34bc Mon Sep 17 00:00:00 2001 From: Ezequiel Garcia Date: Tue, 20 Aug 2013 12:45:50 -0300 Subject: [PATCH 036/523] ARM: mvebu: Add the reference 25 MHz fixed-clock to Armada XP The Armada XP SoC has a reference 25 MHz fixed-clock that is used in some controllers such as the timer and the watchdog. This commit adds a DT representation of this clock through a fixed-clock compatible node. Signed-off-by: Ezequiel Garcia Reviewed-by: Mike Turquette Acked-by: Gregory CLEMENT Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-xp.dtsi | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm/boot/dts/armada-xp.dtsi b/arch/arm/boot/dts/armada-xp.dtsi index def125c0eeaa..c8923bd32278 100644 --- a/arch/arm/boot/dts/armada-xp.dtsi +++ b/arch/arm/boot/dts/armada-xp.dtsi @@ -169,4 +169,13 @@ }; }; }; + + clocks { + /* 25 MHz reference crystal */ + refclk: oscillator { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <25000000>; + }; + }; }; From 3a3c07001b0d4a5eec83bb87284048cd75b81510 Mon Sep 17 00:00:00 2001 From: Ezequiel Garcia Date: Tue, 20 Aug 2013 12:45:51 -0300 Subject: [PATCH 037/523] ARM: mvebu: Add clock properties to Armada XP timer node With the addition of the Armada XP reference clock, we can now model accurately the available clock inputs for the timer: namely, nbclk and refclk. For each of this clock inputs we assign a name, for the driver to select as appropriate. Signed-off-by: Ezequiel Garcia Reviewed-by: Mike Turquette Acked-by: Gregory CLEMENT Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-xp.dtsi | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/armada-xp.dtsi b/arch/arm/boot/dts/armada-xp.dtsi index c8923bd32278..3058522f5aad 100644 --- a/arch/arm/boot/dts/armada-xp.dtsi +++ b/arch/arm/boot/dts/armada-xp.dtsi @@ -70,6 +70,8 @@ timer@20300 { compatible = "marvell,armada-xp-timer"; + clocks = <&coreclk 2>, <&refclk>; + clock-names = "nbclk", "fixed"; }; coreclk: mvebu-sar@18230 { From 5e130367d43ff22836bbae380d197d600fe8ddbb Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Fri, 13 Sep 2013 08:58:17 +0300 Subject: [PATCH 038/523] Bluetooth: Introduce a new HCI_RFKILLED flag This makes it more convenient to check for rfkill (no need to check for dev->rfkill before calling rfkill_blocked()) and also avoids potential races if the RFKILL state needs to be checked from within the rfkill callback. Signed-off-by: Johan Hedberg Cc: stable@vger.kernel.org Acked-by: Marcel Holtmann Signed-off-by: Gustavo Padovan --- include/net/bluetooth/hci.h | 1 + net/bluetooth/hci_core.c | 15 ++++++++++----- 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index aaeaf0938ec0..15f10841e2b5 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -104,6 +104,7 @@ enum { enum { HCI_SETUP, HCI_AUTO_OFF, + HCI_RFKILLED, HCI_MGMT, HCI_PAIRABLE, HCI_SERVICE_CACHE, diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 634debab4d54..0d5bc246b607 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -1146,7 +1146,7 @@ int hci_dev_open(__u16 dev) goto done; } - if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) { + if (test_bit(HCI_RFKILLED, &hdev->dev_flags)) { ret = -ERFKILL; goto done; } @@ -1566,10 +1566,12 @@ static int hci_rfkill_set_block(void *data, bool blocked) BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); - if (!blocked) - return 0; - - hci_dev_do_close(hdev); + if (blocked) { + set_bit(HCI_RFKILLED, &hdev->dev_flags); + hci_dev_do_close(hdev); + } else { + clear_bit(HCI_RFKILLED, &hdev->dev_flags); +} return 0; } @@ -2209,6 +2211,9 @@ int hci_register_dev(struct hci_dev *hdev) } } + if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) + set_bit(HCI_RFKILLED, &hdev->dev_flags); + set_bit(HCI_SETUP, &hdev->dev_flags); if (hdev->dev_type != HCI_AMP) From bf5430360ebe4b2d0c51d91f782e649107b502eb Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Fri, 13 Sep 2013 08:58:18 +0300 Subject: [PATCH 039/523] Bluetooth: Fix rfkill functionality during the HCI setup stage We need to let the setup stage complete cleanly even when the HCI device is rfkilled. Otherwise the HCI device will stay in an undefined state and never get notified to user space through mgmt (even when it gets unblocked through rfkill). This patch makes sure that hci_dev_open() can be called in the HCI_SETUP stage, that blocking the device doesn't abort the setup stage, and that the device gets proper powered down as soon as the setup stage completes in case it was blocked meanwhile. The bug that this patch fixed can be very easily reproduced using e.g. the rfkill command line too. By running "rfkill block all" before inserting a Bluetooth dongle the resulting HCI device goes into a state where it is never announced over mgmt, not even when "rfkill unblock all" is run. Signed-off-by: Johan Hedberg Cc: stable@vger.kernel.org Acked-by: Marcel Holtmann Signed-off-by: Gustavo Padovan --- net/bluetooth/hci_core.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 0d5bc246b607..1b66547a3ca6 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -1146,7 +1146,11 @@ int hci_dev_open(__u16 dev) goto done; } - if (test_bit(HCI_RFKILLED, &hdev->dev_flags)) { + /* Check for rfkill but allow the HCI setup stage to proceed + * (which in itself doesn't cause any RF activity). + */ + if (test_bit(HCI_RFKILLED, &hdev->dev_flags) && + !test_bit(HCI_SETUP, &hdev->dev_flags)) { ret = -ERFKILL; goto done; } @@ -1568,7 +1572,8 @@ static int hci_rfkill_set_block(void *data, bool blocked) if (blocked) { set_bit(HCI_RFKILLED, &hdev->dev_flags); - hci_dev_do_close(hdev); + if (!test_bit(HCI_SETUP, &hdev->dev_flags)) + hci_dev_do_close(hdev); } else { clear_bit(HCI_RFKILLED, &hdev->dev_flags); } @@ -1593,9 +1598,13 @@ static void hci_power_on(struct work_struct *work) return; } - if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) + if (test_bit(HCI_RFKILLED, &hdev->dev_flags)) { + clear_bit(HCI_AUTO_OFF, &hdev->dev_flags); + hci_dev_do_close(hdev); + } else if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { queue_delayed_work(hdev->req_workqueue, &hdev->power_off, HCI_AUTO_OFF_TIMEOUT); + } if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) mgmt_index_added(hdev); From cc9d3c382bc1674884c2e5e468d51230a9503dee Mon Sep 17 00:00:00 2001 From: Jun'ichi Nomura Date: Fri, 13 Sep 2013 14:54:30 +0900 Subject: [PATCH 040/523] dm mpath: do not fail path on -ENOSPC Since ENOSPC is a target-side error, dm-mpath should just pass the error information to upper layer instead of retrying itself with path failover. Otherwise it will end up failing all paths down while path checkers find all paths ok. ENOSPC can now be returned from SCSI device after commit a9d6ceb8 ("[SCSI] return ENOSPC on thin provisioning failure"). Signed-off-by: Jun'ichi Nomura Acked-by: Hannes Reinecke Signed-off-by: Mike Snitzer --- drivers/md/dm-mpath.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index b759a127f9c3..075747e25f77 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -1268,6 +1268,7 @@ static int noretry_error(int error) case -EREMOTEIO: case -EILSEQ: case -ENODATA: + case -ENOSPC: return 1; } From bbf3f8cbdc139860a14c4fc2bb25432427045aaa Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Fri, 13 Sep 2013 17:42:24 -0400 Subject: [PATCH 041/523] dm stats: fix possible counter corruption on 32-bit systems There was a deliberate race condition in dm_stat_for_entry() to avoid the overhead of disabling and enabling interrupts. The race could result in some events not being counted on 64-bit architectures. However, on 32-bit architectures, operations on long long variables are not atomic, so the race condition could cause the counter to jump by 2^32. Such jumps could be disruptive, so we need to do proper locking on 32-bit architectures. Signed-off-by: Mikulas Patocka Cc: Alasdair G. Kergon Signed-off-by: Mike Snitzer --- drivers/md/dm-stats.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/drivers/md/dm-stats.c b/drivers/md/dm-stats.c index 8ae31e8d3d64..3d404c1371ed 100644 --- a/drivers/md/dm-stats.c +++ b/drivers/md/dm-stats.c @@ -451,19 +451,26 @@ static void dm_stat_for_entry(struct dm_stat *s, size_t entry, struct dm_stat_percpu *p; /* - * For strict correctness we should use local_irq_disable/enable + * For strict correctness we should use local_irq_save/restore * instead of preempt_disable/enable. * - * This is racy if the driver finishes bios from non-interrupt - * context as well as from interrupt context or from more different - * interrupts. + * preempt_disable/enable is racy if the driver finishes bios + * from non-interrupt context as well as from interrupt context + * or from more different interrupts. * - * However, the race only results in not counting some events, - * so it is acceptable. + * On 64-bit architectures the race only results in not counting some + * events, so it is acceptable. On 32-bit architectures the race could + * cause the counter going off by 2^32, so we need to do proper locking + * there. * * part_stat_lock()/part_stat_unlock() have this race too. */ +#if BITS_PER_LONG == 32 + unsigned long flags; + local_irq_save(flags); +#else preempt_disable(); +#endif p = &s->stat_percpu[smp_processor_id()][entry]; if (!end) { @@ -478,7 +485,11 @@ static void dm_stat_for_entry(struct dm_stat *s, size_t entry, p->ticks[idx] += duration; } +#if BITS_PER_LONG == 32 + local_irq_restore(flags); +#else preempt_enable(); +#endif } static void __dm_stat_bio(struct dm_stat *s, unsigned long bi_rw, From c16526a7b99c1c28e9670a8c8e3dbcf741bb32be Mon Sep 17 00:00:00 2001 From: Simon Kirby Date: Sat, 10 Aug 2013 01:26:18 -0700 Subject: [PATCH 042/523] ipvs: fix overflow on dest weight multiply Schedulers such as lblc and lblcr require the weight to be as high as the maximum number of active connections. In commit b552f7e3a9524abcbcdf ("ipvs: unify the formula to estimate the overhead of processing connections"), the consideration of inactconns and activeconns was cleaned up to always count activeconns as 256 times more important than inactconns. In cases where 3000 or more connections are expected, a weight of 3000 * 256 * 3000 connections overflows the 32-bit signed result used to determine if rescheduling is required. On amd64, this merely changes the multiply and comparison instructions to 64-bit. On x86, a 64-bit result is already present from imull, so only a few more comparison instructions are emitted. Signed-off-by: Simon Kirby Acked-by: Julian Anastasov Signed-off-by: Simon Horman --- include/net/ip_vs.h | 2 +- net/netfilter/ipvs/ip_vs_lblc.c | 4 ++-- net/netfilter/ipvs/ip_vs_lblcr.c | 12 ++++++------ net/netfilter/ipvs/ip_vs_nq.c | 8 ++++---- net/netfilter/ipvs/ip_vs_sed.c | 8 ++++---- net/netfilter/ipvs/ip_vs_wlc.c | 6 +++--- 6 files changed, 20 insertions(+), 20 deletions(-) diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h index f0d70f066f3d..fe782ed2fe72 100644 --- a/include/net/ip_vs.h +++ b/include/net/ip_vs.h @@ -1649,7 +1649,7 @@ static inline void ip_vs_conn_drop_conntrack(struct ip_vs_conn *cp) /* CONFIG_IP_VS_NFCT */ #endif -static inline unsigned int +static inline int ip_vs_dest_conn_overhead(struct ip_vs_dest *dest) { /* diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c index 1383b0eadc0e..eb814bf74e64 100644 --- a/net/netfilter/ipvs/ip_vs_lblc.c +++ b/net/netfilter/ipvs/ip_vs_lblc.c @@ -443,8 +443,8 @@ __ip_vs_lblc_schedule(struct ip_vs_service *svc) continue; doh = ip_vs_dest_conn_overhead(dest); - if (loh * atomic_read(&dest->weight) > - doh * atomic_read(&least->weight)) { + if ((__s64)loh * atomic_read(&dest->weight) > + (__s64)doh * atomic_read(&least->weight)) { least = dest; loh = doh; } diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c index 5199448697f6..e65f7c573090 100644 --- a/net/netfilter/ipvs/ip_vs_lblcr.c +++ b/net/netfilter/ipvs/ip_vs_lblcr.c @@ -200,8 +200,8 @@ static inline struct ip_vs_dest *ip_vs_dest_set_min(struct ip_vs_dest_set *set) continue; doh = ip_vs_dest_conn_overhead(dest); - if ((loh * atomic_read(&dest->weight) > - doh * atomic_read(&least->weight)) + if (((__s64)loh * atomic_read(&dest->weight) > + (__s64)doh * atomic_read(&least->weight)) && (dest->flags & IP_VS_DEST_F_AVAILABLE)) { least = dest; loh = doh; @@ -246,8 +246,8 @@ static inline struct ip_vs_dest *ip_vs_dest_set_max(struct ip_vs_dest_set *set) dest = rcu_dereference_protected(e->dest, 1); doh = ip_vs_dest_conn_overhead(dest); /* moh/mw < doh/dw ==> moh*dw < doh*mw, where mw,dw>0 */ - if ((moh * atomic_read(&dest->weight) < - doh * atomic_read(&most->weight)) + if (((__s64)moh * atomic_read(&dest->weight) < + (__s64)doh * atomic_read(&most->weight)) && (atomic_read(&dest->weight) > 0)) { most = dest; moh = doh; @@ -611,8 +611,8 @@ __ip_vs_lblcr_schedule(struct ip_vs_service *svc) continue; doh = ip_vs_dest_conn_overhead(dest); - if (loh * atomic_read(&dest->weight) > - doh * atomic_read(&least->weight)) { + if ((__s64)loh * atomic_read(&dest->weight) > + (__s64)doh * atomic_read(&least->weight)) { least = dest; loh = doh; } diff --git a/net/netfilter/ipvs/ip_vs_nq.c b/net/netfilter/ipvs/ip_vs_nq.c index d8d9860934fe..961a6de9bb29 100644 --- a/net/netfilter/ipvs/ip_vs_nq.c +++ b/net/netfilter/ipvs/ip_vs_nq.c @@ -40,7 +40,7 @@ #include -static inline unsigned int +static inline int ip_vs_nq_dest_overhead(struct ip_vs_dest *dest) { /* @@ -59,7 +59,7 @@ ip_vs_nq_schedule(struct ip_vs_service *svc, const struct sk_buff *skb, struct ip_vs_iphdr *iph) { struct ip_vs_dest *dest, *least = NULL; - unsigned int loh = 0, doh; + int loh = 0, doh; IP_VS_DBG(6, "%s(): Scheduling...\n", __func__); @@ -92,8 +92,8 @@ ip_vs_nq_schedule(struct ip_vs_service *svc, const struct sk_buff *skb, } if (!least || - (loh * atomic_read(&dest->weight) > - doh * atomic_read(&least->weight))) { + ((__s64)loh * atomic_read(&dest->weight) > + (__s64)doh * atomic_read(&least->weight))) { least = dest; loh = doh; } diff --git a/net/netfilter/ipvs/ip_vs_sed.c b/net/netfilter/ipvs/ip_vs_sed.c index a5284cc3d882..e446b9fa7424 100644 --- a/net/netfilter/ipvs/ip_vs_sed.c +++ b/net/netfilter/ipvs/ip_vs_sed.c @@ -44,7 +44,7 @@ #include -static inline unsigned int +static inline int ip_vs_sed_dest_overhead(struct ip_vs_dest *dest) { /* @@ -63,7 +63,7 @@ ip_vs_sed_schedule(struct ip_vs_service *svc, const struct sk_buff *skb, struct ip_vs_iphdr *iph) { struct ip_vs_dest *dest, *least; - unsigned int loh, doh; + int loh, doh; IP_VS_DBG(6, "%s(): Scheduling...\n", __func__); @@ -99,8 +99,8 @@ ip_vs_sed_schedule(struct ip_vs_service *svc, const struct sk_buff *skb, if (dest->flags & IP_VS_DEST_F_OVERLOAD) continue; doh = ip_vs_sed_dest_overhead(dest); - if (loh * atomic_read(&dest->weight) > - doh * atomic_read(&least->weight)) { + if ((__s64)loh * atomic_read(&dest->weight) > + (__s64)doh * atomic_read(&least->weight)) { least = dest; loh = doh; } diff --git a/net/netfilter/ipvs/ip_vs_wlc.c b/net/netfilter/ipvs/ip_vs_wlc.c index 6dc1fa128840..b5b4650d50a9 100644 --- a/net/netfilter/ipvs/ip_vs_wlc.c +++ b/net/netfilter/ipvs/ip_vs_wlc.c @@ -35,7 +35,7 @@ ip_vs_wlc_schedule(struct ip_vs_service *svc, const struct sk_buff *skb, struct ip_vs_iphdr *iph) { struct ip_vs_dest *dest, *least; - unsigned int loh, doh; + int loh, doh; IP_VS_DBG(6, "ip_vs_wlc_schedule(): Scheduling...\n"); @@ -71,8 +71,8 @@ ip_vs_wlc_schedule(struct ip_vs_service *svc, const struct sk_buff *skb, if (dest->flags & IP_VS_DEST_F_OVERLOAD) continue; doh = ip_vs_dest_conn_overhead(dest); - if (loh * atomic_read(&dest->weight) > - doh * atomic_read(&least->weight)) { + if ((__s64)loh * atomic_read(&dest->weight) > + (__s64)doh * atomic_read(&least->weight)) { least = dest; loh = doh; } From bcbde4c0a7556cca72874c5e1efa4dccb5198a2b Mon Sep 17 00:00:00 2001 From: Julian Anastasov Date: Thu, 12 Sep 2013 11:21:07 +0300 Subject: [PATCH 043/523] ipvs: make the service replacement more robust commit 578bc3ef1e473a ("ipvs: reorganize dest trash") added IP_VS_DEST_STATE_REMOVING flag and RCU callback named ip_vs_dest_wait_readers() to keep dests and services after removal for at least a RCU grace period. But we have the following corner cases: - we can not reuse the same dest if its service is removed while IP_VS_DEST_STATE_REMOVING is still set because another dest removal in the first grace period can not extend this period. It can happen when ipvsadm -C && ipvsadm -R is used. - dest->svc can be replaced but ip_vs_in_stats() and ip_vs_out_stats() have no explicit read memory barriers when accessing dest->svc. It can happen that dest->svc was just freed (replaced) while we use it to update the stats. We solve the problems as follows: - IP_VS_DEST_STATE_REMOVING is removed and we ensure a fixed idle period for the dest (IP_VS_DEST_TRASH_PERIOD). idle_start will remember when for first time after deletion we noticed dest->refcnt=0. Later, the connections can grab a reference while in RCU grace period but if refcnt becomes 0 we can safely free the dest and its svc. - dest->svc becomes RCU pointer. As result, we add explicit RCU locking in ip_vs_in_stats() and ip_vs_out_stats(). - __ip_vs_unbind_svc is renamed to __ip_vs_svc_put(), it now can free the service immediately or after a RCU grace period. dest->svc is not set to NULL anymore. As result, unlinked dests and their services are freed always after IP_VS_DEST_TRASH_PERIOD period, unused services are freed after a RCU grace period. Signed-off-by: Julian Anastasov Signed-off-by: Simon Horman --- include/net/ip_vs.h | 7 +-- net/netfilter/ipvs/ip_vs_core.c | 12 ++++- net/netfilter/ipvs/ip_vs_ctl.c | 86 ++++++++++++++------------------- 3 files changed, 47 insertions(+), 58 deletions(-) diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h index fe782ed2fe72..9c4d37ec45a1 100644 --- a/include/net/ip_vs.h +++ b/include/net/ip_vs.h @@ -723,8 +723,6 @@ struct ip_vs_dest_dst { struct rcu_head rcu_head; }; -/* In grace period after removing */ -#define IP_VS_DEST_STATE_REMOVING 0x01 /* * The real server destination forwarding entry * with ip address, port number, and so on. @@ -742,7 +740,7 @@ struct ip_vs_dest { atomic_t refcnt; /* reference counter */ struct ip_vs_stats stats; /* statistics */ - unsigned long state; /* state flags */ + unsigned long idle_start; /* start time, jiffies */ /* connection counters and thresholds */ atomic_t activeconns; /* active connections */ @@ -756,14 +754,13 @@ struct ip_vs_dest { struct ip_vs_dest_dst __rcu *dest_dst; /* cached dst info */ /* for virtual service */ - struct ip_vs_service *svc; /* service it belongs to */ + struct ip_vs_service __rcu *svc; /* service it belongs to */ __u16 protocol; /* which protocol (TCP/UDP) */ __be16 vport; /* virtual port number */ union nf_inet_addr vaddr; /* virtual IP address */ __u32 vfwmark; /* firewall mark of service */ struct list_head t_list; /* in dest_trash */ - struct rcu_head rcu_head; unsigned int in_rs_table:1; /* we are in rs_table */ }; diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c index 4f69e83ff836..74fd00c27210 100644 --- a/net/netfilter/ipvs/ip_vs_core.c +++ b/net/netfilter/ipvs/ip_vs_core.c @@ -116,6 +116,7 @@ ip_vs_in_stats(struct ip_vs_conn *cp, struct sk_buff *skb) if (dest && (dest->flags & IP_VS_DEST_F_AVAILABLE)) { struct ip_vs_cpu_stats *s; + struct ip_vs_service *svc; s = this_cpu_ptr(dest->stats.cpustats); s->ustats.inpkts++; @@ -123,11 +124,14 @@ ip_vs_in_stats(struct ip_vs_conn *cp, struct sk_buff *skb) s->ustats.inbytes += skb->len; u64_stats_update_end(&s->syncp); - s = this_cpu_ptr(dest->svc->stats.cpustats); + rcu_read_lock(); + svc = rcu_dereference(dest->svc); + s = this_cpu_ptr(svc->stats.cpustats); s->ustats.inpkts++; u64_stats_update_begin(&s->syncp); s->ustats.inbytes += skb->len; u64_stats_update_end(&s->syncp); + rcu_read_unlock(); s = this_cpu_ptr(ipvs->tot_stats.cpustats); s->ustats.inpkts++; @@ -146,6 +150,7 @@ ip_vs_out_stats(struct ip_vs_conn *cp, struct sk_buff *skb) if (dest && (dest->flags & IP_VS_DEST_F_AVAILABLE)) { struct ip_vs_cpu_stats *s; + struct ip_vs_service *svc; s = this_cpu_ptr(dest->stats.cpustats); s->ustats.outpkts++; @@ -153,11 +158,14 @@ ip_vs_out_stats(struct ip_vs_conn *cp, struct sk_buff *skb) s->ustats.outbytes += skb->len; u64_stats_update_end(&s->syncp); - s = this_cpu_ptr(dest->svc->stats.cpustats); + rcu_read_lock(); + svc = rcu_dereference(dest->svc); + s = this_cpu_ptr(svc->stats.cpustats); s->ustats.outpkts++; u64_stats_update_begin(&s->syncp); s->ustats.outbytes += skb->len; u64_stats_update_end(&s->syncp); + rcu_read_unlock(); s = this_cpu_ptr(ipvs->tot_stats.cpustats); s->ustats.outpkts++; diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index c8148e487386..a3df9bddc4f7 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -460,7 +460,7 @@ static inline void __ip_vs_bind_svc(struct ip_vs_dest *dest, struct ip_vs_service *svc) { atomic_inc(&svc->refcnt); - dest->svc = svc; + rcu_assign_pointer(dest->svc, svc); } static void ip_vs_service_free(struct ip_vs_service *svc) @@ -470,18 +470,25 @@ static void ip_vs_service_free(struct ip_vs_service *svc) kfree(svc); } -static void -__ip_vs_unbind_svc(struct ip_vs_dest *dest) +static void ip_vs_service_rcu_free(struct rcu_head *head) { - struct ip_vs_service *svc = dest->svc; + struct ip_vs_service *svc; - dest->svc = NULL; + svc = container_of(head, struct ip_vs_service, rcu_head); + ip_vs_service_free(svc); +} + +static void __ip_vs_svc_put(struct ip_vs_service *svc, bool do_delay) +{ if (atomic_dec_and_test(&svc->refcnt)) { IP_VS_DBG_BUF(3, "Removing service %u/%s:%u\n", svc->fwmark, IP_VS_DBG_ADDR(svc->af, &svc->addr), ntohs(svc->port)); - ip_vs_service_free(svc); + if (do_delay) + call_rcu(&svc->rcu_head, ip_vs_service_rcu_free); + else + ip_vs_service_free(svc); } } @@ -667,11 +674,6 @@ ip_vs_trash_get_dest(struct ip_vs_service *svc, const union nf_inet_addr *daddr, IP_VS_DBG_ADDR(svc->af, &dest->addr), ntohs(dest->port), atomic_read(&dest->refcnt)); - /* We can not reuse dest while in grace period - * because conns still can use dest->svc - */ - if (test_bit(IP_VS_DEST_STATE_REMOVING, &dest->state)) - continue; if (dest->af == svc->af && ip_vs_addr_equal(svc->af, &dest->addr, daddr) && dest->port == dport && @@ -697,8 +699,10 @@ out: static void ip_vs_dest_free(struct ip_vs_dest *dest) { + struct ip_vs_service *svc = rcu_dereference_protected(dest->svc, 1); + __ip_vs_dst_cache_reset(dest); - __ip_vs_unbind_svc(dest); + __ip_vs_svc_put(svc, false); free_percpu(dest->stats.cpustats); kfree(dest); } @@ -771,6 +775,7 @@ __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest, struct ip_vs_dest_user_kern *udest, int add) { struct netns_ipvs *ipvs = net_ipvs(svc->net); + struct ip_vs_service *old_svc; struct ip_vs_scheduler *sched; int conn_flags; @@ -792,13 +797,14 @@ __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest, atomic_set(&dest->conn_flags, conn_flags); /* bind the service */ - if (!dest->svc) { + old_svc = rcu_dereference_protected(dest->svc, 1); + if (!old_svc) { __ip_vs_bind_svc(dest, svc); } else { - if (dest->svc != svc) { - __ip_vs_unbind_svc(dest); + if (old_svc != svc) { ip_vs_zero_stats(&dest->stats); __ip_vs_bind_svc(dest, svc); + __ip_vs_svc_put(old_svc, true); } } @@ -998,16 +1004,6 @@ ip_vs_edit_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest) return 0; } -static void ip_vs_dest_wait_readers(struct rcu_head *head) -{ - struct ip_vs_dest *dest = container_of(head, struct ip_vs_dest, - rcu_head); - - /* End of grace period after unlinking */ - clear_bit(IP_VS_DEST_STATE_REMOVING, &dest->state); -} - - /* * Delete a destination (must be already unlinked from the service) */ @@ -1023,20 +1019,16 @@ static void __ip_vs_del_dest(struct net *net, struct ip_vs_dest *dest, */ ip_vs_rs_unhash(dest); - if (!cleanup) { - set_bit(IP_VS_DEST_STATE_REMOVING, &dest->state); - call_rcu(&dest->rcu_head, ip_vs_dest_wait_readers); - } - spin_lock_bh(&ipvs->dest_trash_lock); IP_VS_DBG_BUF(3, "Moving dest %s:%u into trash, dest->refcnt=%d\n", IP_VS_DBG_ADDR(dest->af, &dest->addr), ntohs(dest->port), atomic_read(&dest->refcnt)); if (list_empty(&ipvs->dest_trash) && !cleanup) mod_timer(&ipvs->dest_trash_timer, - jiffies + IP_VS_DEST_TRASH_PERIOD); + jiffies + (IP_VS_DEST_TRASH_PERIOD >> 1)); /* dest lives in trash without reference */ list_add(&dest->t_list, &ipvs->dest_trash); + dest->idle_start = 0; spin_unlock_bh(&ipvs->dest_trash_lock); ip_vs_dest_put(dest); } @@ -1108,24 +1100,30 @@ static void ip_vs_dest_trash_expire(unsigned long data) struct net *net = (struct net *) data; struct netns_ipvs *ipvs = net_ipvs(net); struct ip_vs_dest *dest, *next; + unsigned long now = jiffies; spin_lock(&ipvs->dest_trash_lock); list_for_each_entry_safe(dest, next, &ipvs->dest_trash, t_list) { - /* Skip if dest is in grace period */ - if (test_bit(IP_VS_DEST_STATE_REMOVING, &dest->state)) - continue; if (atomic_read(&dest->refcnt) > 0) continue; + if (dest->idle_start) { + if (time_before(now, dest->idle_start + + IP_VS_DEST_TRASH_PERIOD)) + continue; + } else { + dest->idle_start = max(1UL, now); + continue; + } IP_VS_DBG_BUF(3, "Removing destination %u/%s:%u from trash\n", dest->vfwmark, - IP_VS_DBG_ADDR(dest->svc->af, &dest->addr), + IP_VS_DBG_ADDR(dest->af, &dest->addr), ntohs(dest->port)); list_del(&dest->t_list); ip_vs_dest_free(dest); } if (!list_empty(&ipvs->dest_trash)) mod_timer(&ipvs->dest_trash_timer, - jiffies + IP_VS_DEST_TRASH_PERIOD); + jiffies + (IP_VS_DEST_TRASH_PERIOD >> 1)); spin_unlock(&ipvs->dest_trash_lock); } @@ -1320,14 +1318,6 @@ out: return ret; } -static void ip_vs_service_rcu_free(struct rcu_head *head) -{ - struct ip_vs_service *svc; - - svc = container_of(head, struct ip_vs_service, rcu_head); - ip_vs_service_free(svc); -} - /* * Delete a service from the service list * - The service must be unlinked, unlocked and not referenced! @@ -1376,13 +1366,7 @@ static void __ip_vs_del_service(struct ip_vs_service *svc, bool cleanup) /* * Free the service if nobody refers to it */ - if (atomic_dec_and_test(&svc->refcnt)) { - IP_VS_DBG_BUF(3, "Removing service %u/%s:%u\n", - svc->fwmark, - IP_VS_DBG_ADDR(svc->af, &svc->addr), - ntohs(svc->port)); - call_rcu(&svc->rcu_head, ip_vs_service_rcu_free); - } + __ip_vs_svc_put(svc, true); /* decrease the module use count */ ip_vs_use_count_dec(); From 2f3d771a35fee21a1f17364b46b3c8cc66dc6892 Mon Sep 17 00:00:00 2001 From: Julian Anastasov Date: Thu, 12 Sep 2013 11:21:08 +0300 Subject: [PATCH 044/523] ipvs: do not use dest after ip_vs_dest_put in LBLC commit c2a4ffb70eef39 ("ipvs: convert lblc scheduler to rcu") allows RCU readers to use dest after calling ip_vs_dest_put(). In the corner case it can race with ip_vs_dest_trash_expire() which can release the dest while it is being returned to the RCU readers as scheduling result. To fix the problem do not allow en->dest to be replaced and defer the ip_vs_dest_put() call by using RCU callback. Now en->dest does not need to be RCU pointer. Signed-off-by: Julian Anastasov Signed-off-by: Simon Horman --- net/netfilter/ipvs/ip_vs_lblc.c | 72 +++++++++++++++------------------ 1 file changed, 33 insertions(+), 39 deletions(-) diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c index eb814bf74e64..eff13c94498e 100644 --- a/net/netfilter/ipvs/ip_vs_lblc.c +++ b/net/netfilter/ipvs/ip_vs_lblc.c @@ -93,7 +93,7 @@ struct ip_vs_lblc_entry { struct hlist_node list; int af; /* address family */ union nf_inet_addr addr; /* destination IP address */ - struct ip_vs_dest __rcu *dest; /* real server (cache) */ + struct ip_vs_dest *dest; /* real server (cache) */ unsigned long lastuse; /* last used time */ struct rcu_head rcu_head; }; @@ -130,20 +130,21 @@ static struct ctl_table vs_vars_table[] = { }; #endif -static inline void ip_vs_lblc_free(struct ip_vs_lblc_entry *en) +static void ip_vs_lblc_rcu_free(struct rcu_head *head) { - struct ip_vs_dest *dest; + struct ip_vs_lblc_entry *en = container_of(head, + struct ip_vs_lblc_entry, + rcu_head); - hlist_del_rcu(&en->list); - /* - * We don't kfree dest because it is referred either by its service - * or the trash dest list. - */ - dest = rcu_dereference_protected(en->dest, 1); - ip_vs_dest_put(dest); - kfree_rcu(en, rcu_head); + ip_vs_dest_put(en->dest); + kfree(en); } +static inline void ip_vs_lblc_del(struct ip_vs_lblc_entry *en) +{ + hlist_del_rcu(&en->list); + call_rcu(&en->rcu_head, ip_vs_lblc_rcu_free); +} /* * Returns hash value for IPVS LBLC entry @@ -203,30 +204,23 @@ ip_vs_lblc_new(struct ip_vs_lblc_table *tbl, const union nf_inet_addr *daddr, struct ip_vs_lblc_entry *en; en = ip_vs_lblc_get(dest->af, tbl, daddr); - if (!en) { - en = kmalloc(sizeof(*en), GFP_ATOMIC); - if (!en) - return NULL; - - en->af = dest->af; - ip_vs_addr_copy(dest->af, &en->addr, daddr); - en->lastuse = jiffies; - - ip_vs_dest_hold(dest); - RCU_INIT_POINTER(en->dest, dest); - - ip_vs_lblc_hash(tbl, en); - } else { - struct ip_vs_dest *old_dest; - - old_dest = rcu_dereference_protected(en->dest, 1); - if (old_dest != dest) { - ip_vs_dest_put(old_dest); - ip_vs_dest_hold(dest); - /* No ordering constraints for refcnt */ - RCU_INIT_POINTER(en->dest, dest); - } + if (en) { + if (en->dest == dest) + return en; + ip_vs_lblc_del(en); } + en = kmalloc(sizeof(*en), GFP_ATOMIC); + if (!en) + return NULL; + + en->af = dest->af; + ip_vs_addr_copy(dest->af, &en->addr, daddr); + en->lastuse = jiffies; + + ip_vs_dest_hold(dest); + en->dest = dest; + + ip_vs_lblc_hash(tbl, en); return en; } @@ -246,7 +240,7 @@ static void ip_vs_lblc_flush(struct ip_vs_service *svc) tbl->dead = 1; for (i=0; ibucket[i], list) { - ip_vs_lblc_free(en); + ip_vs_lblc_del(en); atomic_dec(&tbl->entries); } } @@ -281,7 +275,7 @@ static inline void ip_vs_lblc_full_check(struct ip_vs_service *svc) sysctl_lblc_expiration(svc))) continue; - ip_vs_lblc_free(en); + ip_vs_lblc_del(en); atomic_dec(&tbl->entries); } spin_unlock(&svc->sched_lock); @@ -335,7 +329,7 @@ static void ip_vs_lblc_check_expire(unsigned long data) if (time_before(now, en->lastuse + ENTRY_TIMEOUT)) continue; - ip_vs_lblc_free(en); + ip_vs_lblc_del(en); atomic_dec(&tbl->entries); goal--; } @@ -511,7 +505,7 @@ ip_vs_lblc_schedule(struct ip_vs_service *svc, const struct sk_buff *skb, * free up entries from the trash at any time. */ - dest = rcu_dereference(en->dest); + dest = en->dest; if ((dest->flags & IP_VS_DEST_F_AVAILABLE) && atomic_read(&dest->weight) > 0 && !is_overloaded(dest, svc)) goto out; @@ -631,7 +625,7 @@ static void __exit ip_vs_lblc_cleanup(void) { unregister_ip_vs_scheduler(&ip_vs_lblc_scheduler); unregister_pernet_subsys(&ip_vs_lblc_ops); - synchronize_rcu(); + rcu_barrier(); } From 742617b176909e586a4cf9b142c996c25986fce8 Mon Sep 17 00:00:00 2001 From: Julian Anastasov Date: Thu, 12 Sep 2013 11:21:09 +0300 Subject: [PATCH 045/523] ipvs: do not use dest after ip_vs_dest_put in LBLCR commit c5549571f975ab ("ipvs: convert lblcr scheduler to rcu") allows RCU readers to use dest after calling ip_vs_dest_put(). In the corner case it can race with ip_vs_dest_trash_expire() which can release the dest while it is being returned to the RCU readers as scheduling result. To fix the problem do not allow e->dest to be replaced and defer the ip_vs_dest_put() call by using RCU callback. Now e->dest does not need to be RCU pointer. Signed-off-by: Julian Anastasov Signed-off-by: Simon Horman --- net/netfilter/ipvs/ip_vs_lblcr.c | 50 +++++++++++++------------------- 1 file changed, 20 insertions(+), 30 deletions(-) diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c index e65f7c573090..0b8550089a2e 100644 --- a/net/netfilter/ipvs/ip_vs_lblcr.c +++ b/net/netfilter/ipvs/ip_vs_lblcr.c @@ -89,7 +89,7 @@ */ struct ip_vs_dest_set_elem { struct list_head list; /* list link */ - struct ip_vs_dest __rcu *dest; /* destination server */ + struct ip_vs_dest *dest; /* destination server */ struct rcu_head rcu_head; }; @@ -107,11 +107,7 @@ static void ip_vs_dest_set_insert(struct ip_vs_dest_set *set, if (check) { list_for_each_entry(e, &set->list, list) { - struct ip_vs_dest *d; - - d = rcu_dereference_protected(e->dest, 1); - if (d == dest) - /* already existed */ + if (e->dest == dest) return; } } @@ -121,7 +117,7 @@ static void ip_vs_dest_set_insert(struct ip_vs_dest_set *set, return; ip_vs_dest_hold(dest); - RCU_INIT_POINTER(e->dest, dest); + e->dest = dest; list_add_rcu(&e->list, &set->list); atomic_inc(&set->size); @@ -129,22 +125,27 @@ static void ip_vs_dest_set_insert(struct ip_vs_dest_set *set, set->lastmod = jiffies; } +static void ip_vs_lblcr_elem_rcu_free(struct rcu_head *head) +{ + struct ip_vs_dest_set_elem *e; + + e = container_of(head, struct ip_vs_dest_set_elem, rcu_head); + ip_vs_dest_put(e->dest); + kfree(e); +} + static void ip_vs_dest_set_erase(struct ip_vs_dest_set *set, struct ip_vs_dest *dest) { struct ip_vs_dest_set_elem *e; list_for_each_entry(e, &set->list, list) { - struct ip_vs_dest *d; - - d = rcu_dereference_protected(e->dest, 1); - if (d == dest) { + if (e->dest == dest) { /* HIT */ atomic_dec(&set->size); set->lastmod = jiffies; - ip_vs_dest_put(dest); list_del_rcu(&e->list); - kfree_rcu(e, rcu_head); + call_rcu(&e->rcu_head, ip_vs_lblcr_elem_rcu_free); break; } } @@ -155,16 +156,8 @@ static void ip_vs_dest_set_eraseall(struct ip_vs_dest_set *set) struct ip_vs_dest_set_elem *e, *ep; list_for_each_entry_safe(e, ep, &set->list, list) { - struct ip_vs_dest *d; - - d = rcu_dereference_protected(e->dest, 1); - /* - * We don't kfree dest because it is referred either - * by its service or by the trash dest list. - */ - ip_vs_dest_put(d); list_del_rcu(&e->list); - kfree_rcu(e, rcu_head); + call_rcu(&e->rcu_head, ip_vs_lblcr_elem_rcu_free); } } @@ -175,12 +168,9 @@ static inline struct ip_vs_dest *ip_vs_dest_set_min(struct ip_vs_dest_set *set) struct ip_vs_dest *dest, *least; int loh, doh; - if (set == NULL) - return NULL; - /* select the first destination server, whose weight > 0 */ list_for_each_entry_rcu(e, &set->list, list) { - least = rcu_dereference(e->dest); + least = e->dest; if (least->flags & IP_VS_DEST_F_OVERLOAD) continue; @@ -195,7 +185,7 @@ static inline struct ip_vs_dest *ip_vs_dest_set_min(struct ip_vs_dest_set *set) /* find the destination with the weighted least load */ nextstage: list_for_each_entry_continue_rcu(e, &set->list, list) { - dest = rcu_dereference(e->dest); + dest = e->dest; if (dest->flags & IP_VS_DEST_F_OVERLOAD) continue; @@ -232,7 +222,7 @@ static inline struct ip_vs_dest *ip_vs_dest_set_max(struct ip_vs_dest_set *set) /* select the first destination server, whose weight > 0 */ list_for_each_entry(e, &set->list, list) { - most = rcu_dereference_protected(e->dest, 1); + most = e->dest; if (atomic_read(&most->weight) > 0) { moh = ip_vs_dest_conn_overhead(most); goto nextstage; @@ -243,7 +233,7 @@ static inline struct ip_vs_dest *ip_vs_dest_set_max(struct ip_vs_dest_set *set) /* find the destination with the weighted most load */ nextstage: list_for_each_entry_continue(e, &set->list, list) { - dest = rcu_dereference_protected(e->dest, 1); + dest = e->dest; doh = ip_vs_dest_conn_overhead(dest); /* moh/mw < doh/dw ==> moh*dw < doh*mw, where mw,dw>0 */ if (((__s64)moh * atomic_read(&dest->weight) < @@ -819,7 +809,7 @@ static void __exit ip_vs_lblcr_cleanup(void) { unregister_ip_vs_scheduler(&ip_vs_lblcr_scheduler); unregister_pernet_subsys(&ip_vs_lblcr_ops); - synchronize_rcu(); + rcu_barrier(); } From d1ee4fea0b6946dd8bc61b46db35ea80af7af34b Mon Sep 17 00:00:00 2001 From: Julian Anastasov Date: Thu, 12 Sep 2013 11:21:10 +0300 Subject: [PATCH 046/523] ipvs: stats should not depend on CPU 0 When reading percpu stats we need to properly reset the sum when CPU 0 is not present in the possible mask. Signed-off-by: Julian Anastasov Signed-off-by: Simon Horman --- net/netfilter/ipvs/ip_vs_est.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/netfilter/ipvs/ip_vs_est.c b/net/netfilter/ipvs/ip_vs_est.c index 6bee6d0c73a5..1425e9a924c4 100644 --- a/net/netfilter/ipvs/ip_vs_est.c +++ b/net/netfilter/ipvs/ip_vs_est.c @@ -59,12 +59,13 @@ static void ip_vs_read_cpu_stats(struct ip_vs_stats_user *sum, struct ip_vs_cpu_stats __percpu *stats) { int i; + bool add = false; for_each_possible_cpu(i) { struct ip_vs_cpu_stats *s = per_cpu_ptr(stats, i); unsigned int start; __u64 inbytes, outbytes; - if (i) { + if (add) { sum->conns += s->ustats.conns; sum->inpkts += s->ustats.inpkts; sum->outpkts += s->ustats.outpkts; @@ -76,6 +77,7 @@ static void ip_vs_read_cpu_stats(struct ip_vs_stats_user *sum, sum->inbytes += inbytes; sum->outbytes += outbytes; } else { + add = true; sum->conns = s->ustats.conns; sum->inpkts = s->ustats.inpkts; sum->outpkts = s->ustats.outpkts; From 53ed7812841f107786f69e0437831469ffdeeeee Mon Sep 17 00:00:00 2001 From: Sekhar Nori Date: Tue, 10 Sep 2013 16:30:21 +0530 Subject: [PATCH 047/523] ARM: davinci: fix build breakage with DEBUG_LL commit fcf7157 ("ARM: davinci: serial: get rid of davinci_uart_config") introduced build breakage because of a misplaced header file include which cause a bunch of errors when the file is included in assembly code (like debug-macro.S) Fix the build breakage. Reported-by: Alexander Holler Tested-by: Alexander Holler Signed-off-by: Sekhar Nori --- arch/arm/mach-davinci/include/mach/serial.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-davinci/include/mach/serial.h b/arch/arm/mach-davinci/include/mach/serial.h index 52b8571b2e70..ce402cd21fa0 100644 --- a/arch/arm/mach-davinci/include/mach/serial.h +++ b/arch/arm/mach-davinci/include/mach/serial.h @@ -15,8 +15,6 @@ #include -#include - #define DAVINCI_UART0_BASE (IO_PHYS + 0x20000) #define DAVINCI_UART1_BASE (IO_PHYS + 0x20400) #define DAVINCI_UART2_BASE (IO_PHYS + 0x20800) @@ -39,6 +37,8 @@ #define UART_DM646X_SCR_TX_WATERMARK 0x08 #ifndef __ASSEMBLY__ +#include + extern int davinci_serial_init(struct platform_device *); #endif From 016b9eb0c52ed7349ffdb42b4e51c93ad1f5d90a Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 4 Sep 2013 11:00:46 -0700 Subject: [PATCH 048/523] ARM: davinci: dm365 evm: fix unused variable warning If neither CONFIG_SND_DM365_AIC3X_CODEC nor CONFIG_SND_DM365_VOICE_CODEC are defined, we may get warnings like: arch/arm/mach-davinci/board-dm365-evm.c:179:33: warning: 'dm365_evm_snd_data' defined but not used [-Wunused-variable] To fix this, just mark the struct as __maybe_unused. Signed-off-by: Brian Norris Cc: Sekhar Nori Cc: Kevin Hilman Cc: Russell King Signed-off-by: Sekhar Nori --- arch/arm/mach-davinci/board-dm365-evm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-davinci/board-dm365-evm.c b/arch/arm/mach-davinci/board-dm365-evm.c index 92b7f770615a..4078ba93776b 100644 --- a/arch/arm/mach-davinci/board-dm365-evm.c +++ b/arch/arm/mach-davinci/board-dm365-evm.c @@ -176,7 +176,7 @@ static struct at24_platform_data eeprom_info = { .context = (void *)0x7f00, }; -static struct snd_platform_data dm365_evm_snd_data = { +static struct snd_platform_data dm365_evm_snd_data __maybe_unused = { .asp_chan_q = EVENTQ_3, }; From 0fd9560257e9491b9f8ff55e882099e171277fb5 Mon Sep 17 00:00:00 2001 From: Sathya Prakash M R Date: Thu, 12 Sep 2013 14:12:55 +0530 Subject: [PATCH 049/523] OMAPDSS: Return right error during connector probe While using HDMI connector driver with sil9022 encoder came across issue where connector driver is probed first. This resulted in error. A deffered probe solved this. Most connector drivers need a encoder driver as their video source. This patch ensures we do a probe defferal if video source is not present for connector drivers. Signed-off-by: Sathya Prakash M R Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/displays-new/connector-analog-tv.c | 2 +- drivers/video/omap2/displays-new/connector-dvi.c | 2 +- drivers/video/omap2/displays-new/connector-hdmi.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/video/omap2/displays-new/connector-analog-tv.c b/drivers/video/omap2/displays-new/connector-analog-tv.c index 1b60698f141e..ccd9073f706f 100644 --- a/drivers/video/omap2/displays-new/connector-analog-tv.c +++ b/drivers/video/omap2/displays-new/connector-analog-tv.c @@ -191,7 +191,7 @@ static int tvc_probe_pdata(struct platform_device *pdev) in = omap_dss_find_output(pdata->source); if (in == NULL) { dev_err(&pdev->dev, "Failed to find video source\n"); - return -ENODEV; + return -EPROBE_DEFER; } ddata->in = in; diff --git a/drivers/video/omap2/displays-new/connector-dvi.c b/drivers/video/omap2/displays-new/connector-dvi.c index bc5f8ceda371..63d88ee6dfe4 100644 --- a/drivers/video/omap2/displays-new/connector-dvi.c +++ b/drivers/video/omap2/displays-new/connector-dvi.c @@ -263,7 +263,7 @@ static int dvic_probe_pdata(struct platform_device *pdev) in = omap_dss_find_output(pdata->source); if (in == NULL) { dev_err(&pdev->dev, "Failed to find video source\n"); - return -ENODEV; + return -EPROBE_DEFER; } ddata->in = in; diff --git a/drivers/video/omap2/displays-new/connector-hdmi.c b/drivers/video/omap2/displays-new/connector-hdmi.c index c5826716d6ab..9abe2c039ae9 100644 --- a/drivers/video/omap2/displays-new/connector-hdmi.c +++ b/drivers/video/omap2/displays-new/connector-hdmi.c @@ -290,7 +290,7 @@ static int hdmic_probe_pdata(struct platform_device *pdev) in = omap_dss_find_output(pdata->source); if (in == NULL) { dev_err(&pdev->dev, "Failed to find video source\n"); - return -ENODEV; + return -EPROBE_DEFER; } ddata->in = in; From 48664b21aeeffb40c5fa06843f18052e2c4ec9ef Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Thu, 19 Sep 2013 12:59:57 +0300 Subject: [PATCH 050/523] OMAPDSS: DISPC: set irq_safe for runtime PM We have a bug with omapdrm, where omapdrm calls dispc's pm_runtime function in atomic context, and dispc's pm_runtime is not marked as irq_safe: BUG: sleeping function called from invalid context at drivers/base/power/runtime.c:952 Dispc's runtime PM callbacks are irq safe, so we can just set the irq_safe flag to fix the issue. However, in the long term, I'd rather have omapdrm manage the runtime PM calls in a better way. Calling get/put for every small operation that touches the dispc registers is very inefficient. It'd be better and cleaner to have clear "in-use" and "not-in-use" states for dispc, so that we don't need to do register context restore for small operations, only to turn dispc off right afterwards. Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/dss/dispc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c index 02a7340111df..477975009eee 100644 --- a/drivers/video/omap2/dss/dispc.c +++ b/drivers/video/omap2/dss/dispc.c @@ -3691,6 +3691,7 @@ static int __init omap_dispchw_probe(struct platform_device *pdev) } pm_runtime_enable(&pdev->dev); + pm_runtime_irq_safe(&pdev->dev); r = dispc_runtime_get(); if (r) From de059be983db710379d965a7baa0a01275795c95 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Tue, 10 Sep 2013 18:30:59 +0200 Subject: [PATCH 051/523] pinctrl: tegra114: Remove MODULE_ALIAS The driver cannot be built as a module, so having a MODULE_ALIAS() isn't useful. While at it, fix a small typo in the file header comment and make the module description string consistent with those for earlier Tegra SoCs. Signed-off-by: Thierry Reding Acked-by: Stephen Warren Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-tegra114.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/pinctrl/pinctrl-tegra114.c b/drivers/pinctrl/pinctrl-tegra114.c index 622c4854977e..93c9e3899d5e 100644 --- a/drivers/pinctrl/pinctrl-tegra114.c +++ b/drivers/pinctrl/pinctrl-tegra114.c @@ -3,7 +3,7 @@ * * Copyright (c) 2012-2013, NVIDIA CORPORATION. All rights reserved. * - * Arthur: Pritesh Raithatha + * Author: Pritesh Raithatha * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, @@ -2763,7 +2763,6 @@ static struct platform_driver tegra114_pinctrl_driver = { }; module_platform_driver(tegra114_pinctrl_driver); -MODULE_ALIAS("platform:tegra114-pinctrl"); MODULE_AUTHOR("Pritesh Raithatha "); -MODULE_DESCRIPTION("NVIDIA Tegra114 pincontrol driver"); +MODULE_DESCRIPTION("NVIDIA Tegra114 pinctrl driver"); MODULE_LICENSE("GPL v2"); From df923c1532fb13569de61a7b8887c2ee9ba4a8f7 Mon Sep 17 00:00:00 2001 From: Jiri Prchal Date: Thu, 19 Sep 2013 14:28:39 +0200 Subject: [PATCH 052/523] ARM: at91: serial: fix wrong pinctrl_usart2_rts Replace pinctrl_usart2_rts and pinctrl_usart2_cts istead of pinctrl_uart2_*. Signed-off-by: Jiri Prchal Signed-off-by: Nicolas Ferre --- arch/arm/boot/dts/at91sam9x5.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi index cf78ac0b04b1..c68486e1f5b2 100644 --- a/arch/arm/boot/dts/at91sam9x5.dtsi +++ b/arch/arm/boot/dts/at91sam9x5.dtsi @@ -190,12 +190,12 @@ AT91_PIOA 8 AT91_PERIPH_A AT91_PINCTRL_NONE>; /* PA8 periph A */ }; - pinctrl_uart2_rts: uart2_rts-0 { + pinctrl_usart2_rts: usart2_rts-0 { atmel,pins = ; /* PB0 periph B */ }; - pinctrl_uart2_cts: uart2_cts-0 { + pinctrl_usart2_cts: usart2_cts-0 { atmel,pins = ; /* PB1 periph B */ }; From 087e35ad71aac1daab0fcd21b61da15ffe7aaec5 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Thu, 19 Sep 2013 18:09:55 +0530 Subject: [PATCH 053/523] regulator: wm8350: correct the max_uV of LDO As per datasheet, voltage range for LDOs are as follows: 0000 = 0.9V ...(50mV steps) 01111 = 1.65V 10000 = 1.8V ... (100mV stepns) 11111 = 3.3V So, there is no selector for 1.65V to 1.8V. Correcting the range for max_uV for selector between 0 to 15. Signed-off-by: Laxman Dewangan Signed-off-by: Mark Brown --- drivers/regulator/wm8350-regulator.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/wm8350-regulator.c b/drivers/regulator/wm8350-regulator.c index 835b5f0f344e..61ca9292a429 100644 --- a/drivers/regulator/wm8350-regulator.c +++ b/drivers/regulator/wm8350-regulator.c @@ -543,7 +543,7 @@ static int wm8350_dcdc_set_suspend_mode(struct regulator_dev *rdev, } static const struct regulator_linear_range wm8350_ldo_ranges[] = { - { .min_uV = 900000, .max_uV = 1750000, .min_sel = 0, .max_sel = 15, + { .min_uV = 900000, .max_uV = 1650000, .min_sel = 0, .max_sel = 15, .uV_step = 50000 }, { .min_uV = 1800000, .max_uV = 3300000, .min_sel = 16, .max_sel = 31, .uV_step = 100000 }, From e7cca2546b3bdf6545b16127113a7057e2946efa Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Thu, 19 Sep 2013 15:22:57 +0200 Subject: [PATCH 054/523] ARM: at91: at91sam9x5: set default mmc[01] pinctrl-names Reported-by: Jiri Prchal Signed-off-by: Nicolas Ferre --- arch/arm/boot/dts/at91sam9x5.dtsi | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi index c68486e1f5b2..e74dc15efa9d 100644 --- a/arch/arm/boot/dts/at91sam9x5.dtsi +++ b/arch/arm/boot/dts/at91sam9x5.dtsi @@ -556,6 +556,7 @@ interrupts = <12 IRQ_TYPE_LEVEL_HIGH 0>; dmas = <&dma0 1 AT91_DMA_CFG_PER_ID(0)>; dma-names = "rxtx"; + pinctrl-names = "default"; #address-cells = <1>; #size-cells = <0>; status = "disabled"; @@ -567,6 +568,7 @@ interrupts = <26 IRQ_TYPE_LEVEL_HIGH 0>; dmas = <&dma1 1 AT91_DMA_CFG_PER_ID(0)>; dma-names = "rxtx"; + pinctrl-names = "default"; #address-cells = <1>; #size-cells = <0>; status = "disabled"; From 9ceb389dddbcdb87830f01fcf84d94b2da581dae Mon Sep 17 00:00:00 2001 From: Michael Opdenacker Date: Wed, 4 Sep 2013 06:54:39 +0200 Subject: [PATCH 055/523] ARM: at91: remove IRQF_DISABLED This flag is a NOOP since 2.6.36 and can be removed. This is an update for 3.11 of a patch already sent for 3.10 Signed-off-by: Michael Opdenacker Signed-off-by: Nicolas Ferre --- arch/arm/mach-at91/at91rm9200_time.c | 2 +- arch/arm/mach-at91/at91sam926x_time.c | 2 +- arch/arm/mach-at91/at91x40_time.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-at91/at91rm9200_time.c b/arch/arm/mach-at91/at91rm9200_time.c index 180b3024bec3..f607deb40f4d 100644 --- a/arch/arm/mach-at91/at91rm9200_time.c +++ b/arch/arm/mach-at91/at91rm9200_time.c @@ -93,7 +93,7 @@ static irqreturn_t at91rm9200_timer_interrupt(int irq, void *dev_id) static struct irqaction at91rm9200_timer_irq = { .name = "at91_tick", - .flags = IRQF_SHARED | IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, + .flags = IRQF_SHARED | IRQF_TIMER | IRQF_IRQPOLL, .handler = at91rm9200_timer_interrupt, .irq = NR_IRQS_LEGACY + AT91_ID_SYS, }; diff --git a/arch/arm/mach-at91/at91sam926x_time.c b/arch/arm/mach-at91/at91sam926x_time.c index 3a4bc2e1a65e..bb392320a0dd 100644 --- a/arch/arm/mach-at91/at91sam926x_time.c +++ b/arch/arm/mach-at91/at91sam926x_time.c @@ -171,7 +171,7 @@ static irqreturn_t at91sam926x_pit_interrupt(int irq, void *dev_id) static struct irqaction at91sam926x_pit_irq = { .name = "at91_tick", - .flags = IRQF_SHARED | IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, + .flags = IRQF_SHARED | IRQF_TIMER | IRQF_IRQPOLL, .handler = at91sam926x_pit_interrupt, .irq = NR_IRQS_LEGACY + AT91_ID_SYS, }; diff --git a/arch/arm/mach-at91/at91x40_time.c b/arch/arm/mach-at91/at91x40_time.c index 2919eba41ff4..c0e637adf65d 100644 --- a/arch/arm/mach-at91/at91x40_time.c +++ b/arch/arm/mach-at91/at91x40_time.c @@ -57,7 +57,7 @@ static irqreturn_t at91x40_timer_interrupt(int irq, void *dev_id) static struct irqaction at91x40_timer_irq = { .name = "at91_tick", - .flags = IRQF_DISABLED | IRQF_TIMER, + .flags = IRQF_TIMER, .handler = at91x40_timer_interrupt }; From 33cbbdccf39f6d7e01c282c4320d818a75b67d54 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Thu, 12 Sep 2013 15:27:06 +0200 Subject: [PATCH 056/523] perf tools: Sharpen the libaudit dependencies test MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There are older libaudit versions that don't have an audit_errno_to_name() method, resulting in a builtin-trace.c build error: builtin-trace.c: In function ‘trace__sys_exit’: builtin-trace.c:794: warning: implicit declaration of function ‘audit_errno_to_name’ Expand the libaudit test to detect this. Signed-off-by: Ingo Molnar Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: H. Peter Anvin Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/20130912132706.GD23826@gmail.com [ Fix the test by escaping the double quotes ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/config/feature-tests.mak | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/perf/config/feature-tests.mak b/tools/perf/config/feature-tests.mak index 708fb8e9822a..7f550c15b446 100644 --- a/tools/perf/config/feature-tests.mak +++ b/tools/perf/config/feature-tests.mak @@ -210,6 +210,7 @@ define SOURCE_LIBAUDIT int main(void) { + printf(\"error message: %s\n\", audit_errno_to_name(0)); return audit_open(); } endef From 456857bded19a4160bbe083bae926e23f483b7f7 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Thu, 12 Sep 2013 15:29:00 +0200 Subject: [PATCH 057/523] perf tools: Fill in new definitions for madvise()/mmap() flags builtin-trace.c started using various new syscall features not defined in the header files of older distros - resulting in build failures. Fill in the (ABI) constants if they are not defined. (There might be a better place to put this than builtin-trace.c, into a compat header or so.) Signed-off-by: Ingo Molnar Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: H. Peter Anvin Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Cc: linux-tip-commits@vger.kernel.org Link: http://lkml.kernel.org/r/20130912132900.GE23826@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-trace.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index f5aa6375e3e9..fd4853404727 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -16,6 +16,23 @@ #include #include +/* For older distros: */ +#ifndef MAP_STACK +# define MAP_STACK 0x20000 +#endif + +#ifndef MADV_HWPOISON +# define MADV_HWPOISON 100 +#endif + +#ifndef MADV_MERGEABLE +# define MADV_MERGEABLE 12 +#endif + +#ifndef MADV_UNMERGEABLE +# define MADV_UNMERGEABLE 13 +#endif + static size_t syscall_arg__scnprintf_hex(char *bf, size_t size, unsigned long arg, u8 arg_idx __maybe_unused, From 886b37baa6274350fb271b2044dc50eb93cb1fc2 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 12 Sep 2013 21:15:21 +0300 Subject: [PATCH 058/523] perf annotate: Fix objdump line parsing offset validation When parsing lines from objdump a line containing source code starting with a numeric label is mistaken for a line of disassembly starting with a memory address. Current validation fails to recognise that the "memory address" is out of range and calculates an invalid offset which later causes this segfault: Program received signal SIGSEGV, Segmentation fault. 0x0000000000457315 in disasm__calc_percent (notes=0xc98970, evidx=0, offset=143705, end=2127526177, path=0x7fffffffbf50) at util/annotate.c:631 631 hits += h->addr[offset++]; (gdb) bt #0 0x0000000000457315 in disasm__calc_percent (notes=0xc98970, evidx=0, offset=143705, end=2127526177, path=0x7fffffffbf50) at util/annotate.c:631 #1 0x00000000004d65e3 in annotate_browser__calc_percent (browser=0x7fffffffd130, evsel=0xa01da0) at ui/browsers/annotate.c:364 #2 0x00000000004d7433 in annotate_browser__run (browser=0x7fffffffd130, evsel=0xa01da0, hbt=0x0) at ui/browsers/annotate.c:672 #3 0x00000000004d80c9 in symbol__tui_annotate (sym=0xc989a0, map=0xa02660, evsel=0xa01da0, hbt=0x0) at ui/browsers/annotate.c:962 #4 0x00000000004d7aa0 in hist_entry__tui_annotate (he=0xdf73f0, evsel=0xa01da0, hbt=0x0) at ui/browsers/annotate.c:823 #5 0x00000000004dd648 in perf_evsel__hists_browse (evsel=0xa01da0, nr_events=1, helpline= 0x58b768 "For a higher level overview, try: perf report --sort comm,dso", ev_name=0xa02cd0 "cycles", left_exits=false, hbt= 0x0, min_pcnt=0, env=0xa011e0) at ui/browsers/hists.c:1659 #6 0x00000000004de372 in perf_evlist__tui_browse_hists (evlist=0xa01520, help= 0x58b768 "For a higher level overview, try: perf report --sort comm,dso", hbt=0x0, min_pcnt=0, env=0xa011e0) at ui/browsers/hists.c:1950 #7 0x000000000042cf6b in __cmd_report (rep=0x7fffffffd6c0) at builtin-report.c:581 #8 0x000000000042e25d in cmd_report (argc=0, argv=0x7fffffffe4b0, prefix=0x0) at builtin-report.c:965 #9 0x000000000041a0e1 in run_builtin (p=0x801548, argc=1, argv=0x7fffffffe4b0) at perf.c:319 #10 0x000000000041a319 in handle_internal_command (argc=1, argv=0x7fffffffe4b0) at perf.c:376 #11 0x000000000041a465 in run_argv (argcp=0x7fffffffe38c, argv=0x7fffffffe380) at perf.c:420 #12 0x000000000041a707 in main (argc=1, argv=0x7fffffffe4b0) at perf.c:521 After the fix is applied the symbol can be annotated showing the problematic line "1: rep" copy_user_generic_string /usr/lib/debug/lib/modules/3.9.10-100.fc17.x86_64/vmlinux */ ENTRY(copy_user_generic_string) CFI_STARTPROC ASM_STAC andl %edx,%edx and %edx,%edx jz 4f je 37 cmpl $8,%edx cmp $0x8,%edx jb 2f /* less than 8 bytes, go to byte copy loop */ jb 33 ALIGN_DESTINATION mov %edi,%ecx and $0x7,%ecx je 28 sub $0x8,%ecx neg %ecx sub %ecx,%edx 1a: mov (%rsi),%al mov %al,(%rdi) inc %rsi inc %rdi dec %ecx jne 1a movl %edx,%ecx 28: mov %edx,%ecx shrl $3,%ecx shr $0x3,%ecx andl $7,%edx and $0x7,%edx 1: rep 100.00 rep movsq %ds:(%rsi),%es:(%rdi) movsq 2: movl %edx,%ecx 33: mov %edx,%ecx 3: rep rep movsb %ds:(%rsi),%es:(%rdi) movsb 4: xorl %eax,%eax 37: xor %eax,%eax data32 xchg %ax,%ax ASM_CLAC ret retq Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1379009721-27667-1-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/annotate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index bfc5a27597d6..7eae5488ecea 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -809,7 +809,7 @@ static int symbol__parse_objdump_line(struct symbol *sym, struct map *map, end = map__rip_2objdump(map, sym->end); offset = line_ip - start; - if (offset < 0 || (u64)line_ip > end) + if ((u64)line_ip < start || (u64)line_ip > end) offset = -1; else parsed_line = tmp2 + 1; From 5b6a42fcb38f3230922239255698dd8c39382978 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 12 Sep 2013 21:19:19 +0300 Subject: [PATCH 059/523] perf tools: Fix buildid cache handling of kallsyms with kcore When kallsyms is used with kcore the dso long_name becomes the kcore file name. That prevents the buildid cache from caching kallsyms. (There is no support at present for caching kcore). Fix by changing it so that the kallsyms name is used in that case instead. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1379009959-28046-1-git-send-email-adrian.hunter@intel.com [ Kept 'struct foo' pointer as first parameter of foo__ prefixed functions ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/header.c | 41 +++++++++++++++++++++++++++------------- 1 file changed, 28 insertions(+), 13 deletions(-) diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 26441d0e571b..ce69901176d8 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -199,9 +199,11 @@ static int write_buildid(char *name, size_t name_len, u8 *build_id, return write_padded(fd, name, name_len + 1, len); } -static int __dsos__write_buildid_table(struct list_head *head, pid_t pid, - u16 misc, int fd) +static int __dsos__write_buildid_table(struct list_head *head, + struct machine *machine, + pid_t pid, u16 misc, int fd) { + char nm[PATH_MAX]; struct dso *pos; dsos__for_each_with_build_id(pos, head) { @@ -215,6 +217,10 @@ static int __dsos__write_buildid_table(struct list_head *head, pid_t pid, if (is_vdso_map(pos->short_name)) { name = (char *) VDSO__MAP_NAME; name_len = sizeof(VDSO__MAP_NAME) + 1; + } else if (dso__is_kcore(pos)) { + machine__mmap_name(machine, nm, sizeof(nm)); + name = nm; + name_len = strlen(nm) + 1; } else { name = pos->long_name; name_len = pos->long_name_len + 1; @@ -240,10 +246,10 @@ static int machine__write_buildid_table(struct machine *machine, int fd) umisc = PERF_RECORD_MISC_GUEST_USER; } - err = __dsos__write_buildid_table(&machine->kernel_dsos, machine->pid, - kmisc, fd); + err = __dsos__write_buildid_table(&machine->kernel_dsos, machine, + machine->pid, kmisc, fd); if (err == 0) - err = __dsos__write_buildid_table(&machine->user_dsos, + err = __dsos__write_buildid_table(&machine->user_dsos, machine, machine->pid, umisc, fd); return err; } @@ -375,23 +381,31 @@ out_free: return err; } -static int dso__cache_build_id(struct dso *dso, const char *debugdir) +static int dso__cache_build_id(struct dso *dso, struct machine *machine, + const char *debugdir) { bool is_kallsyms = dso->kernel && dso->long_name[0] != '/'; bool is_vdso = is_vdso_map(dso->short_name); + char *name = dso->long_name; + char nm[PATH_MAX]; - return build_id_cache__add_b(dso->build_id, sizeof(dso->build_id), - dso->long_name, debugdir, - is_kallsyms, is_vdso); + if (dso__is_kcore(dso)) { + is_kallsyms = true; + machine__mmap_name(machine, nm, sizeof(nm)); + name = nm; + } + return build_id_cache__add_b(dso->build_id, sizeof(dso->build_id), name, + debugdir, is_kallsyms, is_vdso); } -static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) +static int __dsos__cache_build_ids(struct list_head *head, + struct machine *machine, const char *debugdir) { struct dso *pos; int err = 0; dsos__for_each_with_build_id(pos, head) - if (dso__cache_build_id(pos, debugdir)) + if (dso__cache_build_id(pos, machine, debugdir)) err = -1; return err; @@ -399,8 +413,9 @@ static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) static int machine__cache_build_ids(struct machine *machine, const char *debugdir) { - int ret = __dsos__cache_build_ids(&machine->kernel_dsos, debugdir); - ret |= __dsos__cache_build_ids(&machine->user_dsos, debugdir); + int ret = __dsos__cache_build_ids(&machine->kernel_dsos, machine, + debugdir); + ret |= __dsos__cache_build_ids(&machine->user_dsos, machine, debugdir); return ret; } From e955d5c434009b661dbb200c601254b0c2d9940a Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Fri, 13 Sep 2013 16:49:30 +0300 Subject: [PATCH 060/523] perf tools: Fix compile with libelf without get_phdrnum Add a feature check for get_phdrnum() and implement a replacement if it is not present. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1379080170-6608-1-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/config/Makefile | 3 +++ tools/perf/config/feature-tests.mak | 9 +++++++++ tools/perf/util/symbol-elf.c | 16 ++++++++++++++++ 3 files changed, 28 insertions(+) diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index 214e17e97e5c..346ee929d250 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -180,6 +180,9 @@ FLAGS_LIBELF=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) ifeq ($(call try-cc,$(SOURCE_ELF_MMAP),$(FLAGS_LIBELF),-DLIBELF_MMAP),y) CFLAGS += -DLIBELF_MMAP endif +ifeq ($(call try-cc,$(SOURCE_ELF_GETPHDRNUM),$(FLAGS_LIBELF),-DHAVE_ELF_GETPHDRNUM),y) + CFLAGS += -DHAVE_ELF_GETPHDRNUM +endif # include ARCH specific config -include $(src-perf)/arch/$(ARCH)/Makefile diff --git a/tools/perf/config/feature-tests.mak b/tools/perf/config/feature-tests.mak index 7f550c15b446..d5a8dd44945f 100644 --- a/tools/perf/config/feature-tests.mak +++ b/tools/perf/config/feature-tests.mak @@ -61,6 +61,15 @@ int main(void) } endef +define SOURCE_ELF_GETPHDRNUM +#include +int main(void) +{ + size_t dst; + return elf_getphdrnum(0, &dst); +} +endef + ifndef NO_SLANG define SOURCE_SLANG #include diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index a7b9ab557380..a9c829be5216 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -8,6 +8,22 @@ #include "symbol.h" #include "debug.h" +#ifndef HAVE_ELF_GETPHDRNUM +static int elf_getphdrnum(Elf *elf, size_t *dst) +{ + GElf_Ehdr gehdr; + GElf_Ehdr *ehdr; + + ehdr = gelf_getehdr(elf, &gehdr); + if (!ehdr) + return -1; + + *dst = ehdr->e_phnum; + + return 0; +} +#endif + #ifndef NT_GNU_BUILD_ID #define NT_GNU_BUILD_ID 3 #endif From 33e940a25daaea71be054e8a4bdb61730cc9ebbc Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 17 Sep 2013 16:34:28 -0300 Subject: [PATCH 061/523] perf session: Check for SIGINT in more loops When processing big files we were not checking if session_done was set by the SIGINT signal handler, for instance in 'perf report'. Fix it. Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-pyad42lgrtq7xhg2dpsoauq7@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-inject.c | 2 -- tools/perf/builtin-report.c | 5 +++-- tools/perf/builtin-script.c | 2 -- tools/perf/util/hist.c | 2 ++ tools/perf/util/session.c | 9 +++++++-- tools/perf/util/session.h | 4 ++++ 6 files changed, 16 insertions(+), 8 deletions(-) diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c index 423875c999b2..afe377b2884f 100644 --- a/tools/perf/builtin-inject.c +++ b/tools/perf/builtin-inject.c @@ -321,8 +321,6 @@ found: return perf_event__repipe(tool, event_sw, &sample_sw, machine); } -extern volatile int session_done; - static void sig_handler(int sig __maybe_unused) { session_done = 1; diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 8e50d8d77419..72eae7498c09 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -401,8 +401,6 @@ static int perf_report__setup_sample_type(struct perf_report *rep) return 0; } -extern volatile int session_done; - static void sig_handler(int sig __maybe_unused) { session_done = 1; @@ -568,6 +566,9 @@ static int __cmd_report(struct perf_report *rep) } } + if (session_done()) + return 0; + if (nr_samples == 0) { ui__error("The %s file has no samples!\n", session->filename); return 0; diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 7f31a3ded1b6..9c333ff3dfeb 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -553,8 +553,6 @@ static struct perf_tool perf_script = { .ordering_requires_timestamps = true, }; -extern volatile int session_done; - static void sig_handler(int sig __maybe_unused) { session_done = 1; diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index 46a0d35a05e1..9ff6cf3e9a99 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -611,6 +611,8 @@ void hists__collapse_resort(struct hists *hists) next = rb_first(root); while (next) { + if (session_done()) + break; n = rb_entry(next, struct hist_entry, rb_node_in); next = rb_next(&n->rb_node_in); diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 51f5edf2a6d0..70ffa41518f3 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -531,6 +531,9 @@ static int flush_sample_queue(struct perf_session *s, return 0; list_for_each_entry_safe(iter, tmp, head, list) { + if (session_done()) + return 0; + if (iter->timestamp > limit) break; @@ -1160,7 +1163,6 @@ static void perf_session__warn_about_errors(const struct perf_session *session, } } -#define session_done() (*(volatile int *)(&session_done)) volatile int session_done; static int __perf_session__process_pipe_events(struct perf_session *self, @@ -1372,10 +1374,13 @@ more: "Processing events..."); } + err = 0; + if (session_done()) + goto out_err; + if (file_pos < file_size) goto more; - err = 0; /* do the final flush for ordered samples */ session->ordered_samples.next_flush = ULLONG_MAX; err = flush_sample_queue(session, tool); diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index 3aa75fb2225f..04bf7373a7e5 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -124,4 +124,8 @@ int __perf_session__set_tracepoints_handlers(struct perf_session *session, #define perf_session__set_tracepoints_handlers(session, array) \ __perf_session__set_tracepoints_handlers(session, array, ARRAY_SIZE(array)) + +extern volatile int session_done; + +#define session_done() (*(volatile int *)(&session_done)) #endif /* __PERF_SESSION_H */ From 0dbb1cac1dbdddf64cdd0f972c062a26484b7177 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Mon, 23 Apr 2012 12:24:36 +0900 Subject: [PATCH 062/523] perf probe: Fix finder to find lines of given function The commit ba28c59bc9ed8fb7b9a753cd88ee54a2c4f6265b fixed a declaration entry bug in probe_point_search_cb(). There are same bugs in line finder and call_probe_finder(). This introduces a new dwarf utility function to determine given DIE is a function definition, not declaration. Signed-off-by: Masami Hiramatsu Cc: Ananth N Mavinakayanahalli Cc: Prashanth Nageshappa Cc: Srikar Dronamraju Cc: Steven Rostedt Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20120423032435.8737.80064.stgit@localhost.localdomain Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/dwarf-aux.c | 19 +++++++++++++++++++ tools/perf/util/dwarf-aux.h | 3 +++ tools/perf/util/probe-finder.c | 12 +++++------- 3 files changed, 27 insertions(+), 7 deletions(-) diff --git a/tools/perf/util/dwarf-aux.c b/tools/perf/util/dwarf-aux.c index 3e5f5430a28a..e23bde19d590 100644 --- a/tools/perf/util/dwarf-aux.c +++ b/tools/perf/util/dwarf-aux.c @@ -262,6 +262,21 @@ bool die_is_signed_type(Dwarf_Die *tp_die) ret == DW_ATE_signed_fixed); } +/** + * die_is_func_def - Ensure that this DIE is a subprogram and definition + * @dw_die: a DIE + * + * Ensure that this DIE is a subprogram and NOT a declaration. This + * returns true if @dw_die is a function definition. + **/ +bool die_is_func_def(Dwarf_Die *dw_die) +{ + Dwarf_Attribute attr; + + return (dwarf_tag(dw_die) == DW_TAG_subprogram && + dwarf_attr(dw_die, DW_AT_declaration, &attr) == NULL); +} + /** * die_get_data_member_location - Get the data-member offset * @mb_die: a DIE of a member of a data structure @@ -392,6 +407,10 @@ static int __die_search_func_cb(Dwarf_Die *fn_die, void *data) { struct __addr_die_search_param *ad = data; + /* + * Since a declaration entry doesn't has given pc, this always returns + * function definition entry. + */ if (dwarf_tag(fn_die) == DW_TAG_subprogram && dwarf_haspc(fn_die, ad->addr)) { memcpy(ad->die_mem, fn_die, sizeof(Dwarf_Die)); diff --git a/tools/perf/util/dwarf-aux.h b/tools/perf/util/dwarf-aux.h index 6ce1717784b7..8658d41697d2 100644 --- a/tools/perf/util/dwarf-aux.h +++ b/tools/perf/util/dwarf-aux.h @@ -38,6 +38,9 @@ extern int cu_find_lineinfo(Dwarf_Die *cudie, unsigned long addr, extern int cu_walk_functions_at(Dwarf_Die *cu_die, Dwarf_Addr addr, int (*callback)(Dwarf_Die *, void *), void *data); +/* Ensure that this DIE is a subprogram and definition (not declaration) */ +extern bool die_is_func_def(Dwarf_Die *dw_die); + /* Compare diename and tname */ extern bool die_compare_name(Dwarf_Die *dw_die, const char *tname); diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index be0329394d56..20c7299a9d4e 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -734,7 +734,7 @@ static int call_probe_finder(Dwarf_Die *sc_die, struct probe_finder *pf) } /* If not a real subprogram, find a real one */ - if (dwarf_tag(sc_die) != DW_TAG_subprogram) { + if (!die_is_func_def(sc_die)) { if (!die_find_realfunc(&pf->cu_die, pf->addr, &pf->sp_die)) { pr_warning("Failed to find probe point in any " "functions.\n"); @@ -980,12 +980,10 @@ static int probe_point_search_cb(Dwarf_Die *sp_die, void *data) struct dwarf_callback_param *param = data; struct probe_finder *pf = param->data; struct perf_probe_point *pp = &pf->pev->point; - Dwarf_Attribute attr; /* Check tag and diename */ - if (dwarf_tag(sp_die) != DW_TAG_subprogram || - !die_compare_name(sp_die, pp->function) || - dwarf_attr(sp_die, DW_AT_declaration, &attr)) + if (!die_is_func_def(sp_die) || + !die_compare_name(sp_die, pp->function)) return DWARF_CB_OK; /* Check declared file */ @@ -1474,7 +1472,7 @@ static int line_range_inline_cb(Dwarf_Die *in_die, void *data) return 0; } -/* Search function from function name */ +/* Search function definition from function name */ static int line_range_search_cb(Dwarf_Die *sp_die, void *data) { struct dwarf_callback_param *param = data; @@ -1485,7 +1483,7 @@ static int line_range_search_cb(Dwarf_Die *sp_die, void *data) if (lr->file && strtailcmp(lr->file, dwarf_decl_file(sp_die))) return DWARF_CB_OK; - if (dwarf_tag(sp_die) == DW_TAG_subprogram && + if (die_is_func_def(sp_die) && die_compare_name(sp_die, lr->function)) { lf->fname = dwarf_decl_file(sp_die); dwarf_decl_line(sp_die, &lr->offset); From 4028b6c4c03f213260e9290ff3a6b5439aad07ce Mon Sep 17 00:00:00 2001 From: Liam Girdwood Date: Fri, 13 Sep 2013 17:43:17 +0100 Subject: [PATCH 063/523] ALSA: compress: Fix compress device unregister. snd_unregister_device() should return the device type and not stream direction. Signed-off-by: Liam Girdwood Acked-by: Vinod Koul Tested-by: Vinod Koul Cc: Signed-off-by: Takashi Iwai --- sound/core/compress_offload.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c index 98969541cbcc..5863ba6dd12b 100644 --- a/sound/core/compress_offload.c +++ b/sound/core/compress_offload.c @@ -837,7 +837,8 @@ static int snd_compress_dev_disconnect(struct snd_device *device) struct snd_compr *compr; compr = device->device_data; - snd_unregister_device(compr->direction, compr->card, compr->device); + snd_unregister_device(SNDRV_DEVICE_TYPE_COMPRESS, compr->card, + compr->device); return 0; } From 0f9654296eabf7f238661d20a6af545986cf713f Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Thu, 12 Sep 2013 15:16:49 +0200 Subject: [PATCH 064/523] perf tools: Fix old GCC build error in trace-event-parse.c:parse_proc_kallsyms() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Old GCC (4.1) does not see through the code flow of parse_proc_kallsyms() and gets confused about the status of 'fmt': util/trace-event-parse.c: In function ‘parse_proc_kallsyms’: util/trace-event-parse.c:189: warning: ‘fmt’ may be used uninitialized in this function make: *** [util/trace-event-parse.o] Error 1 Help out GCC by initializing 'fmt' to NULL. Signed-off-by: Ingo Molnar Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: H. Peter Anvin Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/20130912131649.GC23826@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/trace-event-parse.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c index fe7a27d67d2b..e9e1c03f927d 100644 --- a/tools/perf/util/trace-event-parse.c +++ b/tools/perf/util/trace-event-parse.c @@ -186,7 +186,7 @@ void parse_proc_kallsyms(struct pevent *pevent, char *next = NULL; char *addr_str; char *mod; - char *fmt; + char *fmt = NULL; line = strtok_r(file, "\n", &next); while (line) { From ce7eebe5c3deef8e19c177c24ee75843256e69ca Mon Sep 17 00:00:00 2001 From: Vinson Lee Date: Wed, 18 Sep 2013 16:16:40 -0700 Subject: [PATCH 065/523] tools lib lk: Uninclude linux/magic.h in debugfs.c The compilation only looks for linux/magic.h from the default include paths, which does not include the source tree. This results in a build error if linux/magic.h is not available or not installed. For example, this build error occurs on CentOS 5. $ make -C tools/lib/lk V=1 [...] gcc -o debugfs.o -c -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -D_FORTIFY_SOURCE=2 -Wbad-function-cast -Wdeclaration-after-statement -Wformat-security -Wformat-y2k -Winit-self -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wno-system-headers -Wold-style-definition -Wpacked -Wredundant-decls -Wshadow -Wstrict-aliasing=3 -Wstrict-prototypes -Wswitch-default -Wswitch-enum -Wundef -Wwrite-strings -Wformat -fPIC -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 debugfs.c debugfs.c:8:25: error: linux/magic.h: No such file or directory The only symbol from linux/magic.h needed by debugfs.c is DEBUGFS_MAGIC, and that is already defined in debugfs.h. linux/magic.h isn't providing any extra symbols and can unincluded. This is similar to the approach by perf, which has its own magic.h wrapper at tools/perf/util/include/linux/magic.h Signed-off-by: Vinson Lee Acked-by: Borislav Petkov Cc: Borislav Petkov Cc: Vinson Lee Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1379546200-17028-1-git-send-email-vlee@freedesktop.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/lk/debugfs.c | 1 - 1 file changed, 1 deletion(-) diff --git a/tools/lib/lk/debugfs.c b/tools/lib/lk/debugfs.c index 099e7cd022e4..7c4347962353 100644 --- a/tools/lib/lk/debugfs.c +++ b/tools/lib/lk/debugfs.c @@ -5,7 +5,6 @@ #include #include #include -#include #include #include "debugfs.h" From ddf7e399024aa908573a08d6339cefa6253b83db Mon Sep 17 00:00:00 2001 From: Quentin Armitage Date: Thu, 19 Sep 2013 12:00:29 +0100 Subject: [PATCH 066/523] ARM: kirkwood: Fix address of second XOR engine There appears to be an error in the second address of the second XOR engine in the Kirkwood SoC device tree, which is specified as 0xd0b00 but should be 0x60b00. For confirmation of address see table 581 page 658 of: http://www.marvell.com/embedded-processors/kirkwood/assets/FS_88F6180_9x_6281_OpenSource.pdf Also see definition of XOR1_HIGH_PHYS_BASE in arch/arm/mach-kirkwood/include/mach/kirkwood.h Signed-off-by: Quentin Armitage Reviewed-by: Sebastian Hesselbarth Signed-off-by: Jason Cooper --- arch/arm/boot/dts/kirkwood.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/kirkwood.dtsi b/arch/arm/boot/dts/kirkwood.dtsi index 858099f5b966..1335b2e1bed4 100644 --- a/arch/arm/boot/dts/kirkwood.dtsi +++ b/arch/arm/boot/dts/kirkwood.dtsi @@ -168,7 +168,7 @@ xor@60900 { compatible = "marvell,orion-xor"; reg = <0x60900 0x100 - 0xd0B00 0x100>; + 0x60B00 0x100>; status = "okay"; clocks = <&gate_clk 16>; From c5ecceefdb840af45db436adc58219ae97b6ef3c Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Fri, 13 Sep 2013 23:39:17 +0200 Subject: [PATCH 067/523] perf: Update ABI comment For some mysterious reason the sample_id field of PERF_RECORD_MMAP went AWOL. Reported-by: Vince Weaver Signed-off-by: Peter Zijlstra Signed-off-by: Ingo Molnar --- include/uapi/linux/perf_event.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h index 40a1fb807396..7f6d584c267b 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h @@ -528,6 +528,7 @@ enum perf_event_type { * u64 len; * u64 pgoff; * char filename[]; + * struct sample_id sample_id; * }; */ PERF_RECORD_MMAP = 1, From 73c4427c6ca3b32fa0441791e9c6eadceff7242f Mon Sep 17 00:00:00 2001 From: "Yan, Zheng" Date: Tue, 17 Sep 2013 14:48:13 +0800 Subject: [PATCH 068/523] perf/x86/intel/uncore: Don't use smp_processor_id() in validate_group() uncore_validate_group() can't call smp_processor_id() because it is in preemptible context. Pass NUMA_NO_NODE to the allocator instead. Signed-off-by: Yan, Zheng Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1379400493-11505-1-git-send-email-zheng.z.yan@intel.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/perf_event_intel_uncore.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.c b/arch/x86/kernel/cpu/perf_event_intel_uncore.c index 8ed44589b0e4..4118f9f68315 100644 --- a/arch/x86/kernel/cpu/perf_event_intel_uncore.c +++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.c @@ -2706,14 +2706,14 @@ static void uncore_pmu_init_hrtimer(struct intel_uncore_box *box) box->hrtimer.function = uncore_pmu_hrtimer; } -struct intel_uncore_box *uncore_alloc_box(struct intel_uncore_type *type, int cpu) +static struct intel_uncore_box *uncore_alloc_box(struct intel_uncore_type *type, int node) { struct intel_uncore_box *box; int i, size; size = sizeof(*box) + type->num_shared_regs * sizeof(struct intel_uncore_extra_reg); - box = kzalloc_node(size, GFP_KERNEL, cpu_to_node(cpu)); + box = kzalloc_node(size, GFP_KERNEL, node); if (!box) return NULL; @@ -3031,7 +3031,7 @@ static int uncore_validate_group(struct intel_uncore_pmu *pmu, struct intel_uncore_box *fake_box; int ret = -EINVAL, n; - fake_box = uncore_alloc_box(pmu->type, smp_processor_id()); + fake_box = uncore_alloc_box(pmu->type, NUMA_NO_NODE); if (!fake_box) return -ENOMEM; @@ -3294,7 +3294,7 @@ static int uncore_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id } type = pci_uncores[UNCORE_PCI_DEV_TYPE(id->driver_data)]; - box = uncore_alloc_box(type, 0); + box = uncore_alloc_box(type, NUMA_NO_NODE); if (!box) return -ENOMEM; @@ -3499,7 +3499,7 @@ static int uncore_cpu_prepare(int cpu, int phys_id) if (pmu->func_id < 0) pmu->func_id = j; - box = uncore_alloc_box(type, cpu); + box = uncore_alloc_box(type, cpu_to_node(cpu)); if (!box) return -ENOMEM; From fa7315871046b9a4c48627905691dbde57e51033 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 19 Sep 2013 10:16:42 +0200 Subject: [PATCH 069/523] perf: Fix capabilities bitfield compatibility in 'struct perf_event_mmap_page' Solve the problems around the broken definition of perf_event_mmap_page:: cap_usr_time and cap_usr_rdpmc fields which used to overlap, partially fixed by: 860f085b74e9 ("perf: Fix broken union in 'struct perf_event_mmap_page'") The problem with the fix (merged in v3.12-rc1 and not yet released officially), noticed by Vince Weaver is that the new behavior is not detectable by new user-space, and that due to the reuse of the field names it's easy to mis-compile a binary if old headers are used on a new kernel or new headers are used on an old kernel. To solve all that make this change explicit, detectable and self-contained, by iterating the ABI the following way: - Always clear bit 0, and rename it to usrpage->cap_bit0, to at least not confuse old user-space binaries. RDPMC will be marked as unavailable to old binaries but that's within the ABI, this is a capability bit. - Rename bit 1 to ->cap_bit0_is_deprecated and always set it to 1, so new libraries can reliably detect that bit 0 is deprecated and perma-zero without having to check the kernel version. - Use bits 2, 3, 4 for the newly defined, correct functionality: cap_user_rdpmc : 1, /* The RDPMC instruction can be used to read counts */ cap_user_time : 1, /* The time_* fields are used */ cap_user_time_zero : 1, /* The time_zero field is used */ - Rename all the bitfield names in perf_event.h to be different from the old names, to make sure it's not possible to mis-compile it accidentally with old assumptions. The 'size' field can then be used in the future to add new fields and it will act as a natural ABI version indicator as well. Also adjust tools/perf/ userspace for the new definitions, noticed by Adrian Hunter. Reported-by: Vince Weaver Signed-off-by: Peter Zijlstra Also-Fixed-by: Adrian Hunter Link: http://lkml.kernel.org/n/tip-zr03yxjrpXesOzzupszqglbv@git.kernel.org Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/perf_event.c | 10 +++++----- include/uapi/linux/perf_event.h | 14 +++++++++----- kernel/events/core.c | 21 +++++++++++++++++++++ tools/perf/arch/x86/util/tsc.c | 6 +++--- 4 files changed, 38 insertions(+), 13 deletions(-) diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index 8355c84b9729..a9c606bb4945 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -1883,9 +1883,9 @@ static struct pmu pmu = { void arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now) { - userpg->cap_usr_time = 0; - userpg->cap_usr_time_zero = 0; - userpg->cap_usr_rdpmc = x86_pmu.attr_rdpmc; + userpg->cap_user_time = 0; + userpg->cap_user_time_zero = 0; + userpg->cap_user_rdpmc = x86_pmu.attr_rdpmc; userpg->pmc_width = x86_pmu.cntval_bits; if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC)) @@ -1894,13 +1894,13 @@ void arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now) if (!boot_cpu_has(X86_FEATURE_NONSTOP_TSC)) return; - userpg->cap_usr_time = 1; + userpg->cap_user_time = 1; userpg->time_mult = this_cpu_read(cyc2ns); userpg->time_shift = CYC2NS_SCALE_FACTOR; userpg->time_offset = this_cpu_read(cyc2ns_offset) - now; if (sched_clock_stable && !check_tsc_disabled()) { - userpg->cap_usr_time_zero = 1; + userpg->cap_user_time_zero = 1; userpg->time_zero = this_cpu_read(cyc2ns_offset); } } diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h index 7f6d584c267b..009a655a5d35 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h @@ -380,10 +380,13 @@ struct perf_event_mmap_page { union { __u64 capabilities; struct { - __u64 cap_usr_time : 1, - cap_usr_rdpmc : 1, - cap_usr_time_zero : 1, - cap_____res : 61; + __u64 cap_bit0 : 1, /* Always 0, deprecated, see commit 860f085b74e9 */ + cap_bit0_is_deprecated : 1, /* Always 1, signals that bit 0 is zero */ + + cap_user_rdpmc : 1, /* The RDPMC instruction can be used to read counts */ + cap_user_time : 1, /* The time_* fields are used */ + cap_user_time_zero : 1, /* The time_zero field is used */ + cap_____res : 59; }; }; @@ -442,12 +445,13 @@ struct perf_event_mmap_page { * ((rem * time_mult) >> time_shift); */ __u64 time_zero; + __u32 size; /* Header size up to __reserved[] fields. */ /* * Hole for extension of the self monitor capabilities */ - __u64 __reserved[119]; /* align to 1k */ + __u8 __reserved[118*8+4]; /* align to 1k. */ /* * Control data for the mmap() data buffer. diff --git a/kernel/events/core.c b/kernel/events/core.c index dd236b66ca3a..cb4238e85b38 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -3660,6 +3660,26 @@ static void calc_timer_values(struct perf_event *event, *running = ctx_time - event->tstamp_running; } +static void perf_event_init_userpage(struct perf_event *event) +{ + struct perf_event_mmap_page *userpg; + struct ring_buffer *rb; + + rcu_read_lock(); + rb = rcu_dereference(event->rb); + if (!rb) + goto unlock; + + userpg = rb->user_page; + + /* Allow new userspace to detect that bit 0 is deprecated */ + userpg->cap_bit0_is_deprecated = 1; + userpg->size = offsetof(struct perf_event_mmap_page, __reserved); + +unlock: + rcu_read_unlock(); +} + void __weak arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now) { } @@ -4044,6 +4064,7 @@ again: ring_buffer_attach(event, rb); rcu_assign_pointer(event->rb, rb); + perf_event_init_userpage(event); perf_event_update_userpage(event); unlock: diff --git a/tools/perf/arch/x86/util/tsc.c b/tools/perf/arch/x86/util/tsc.c index 9570c2b0f83c..b2519e49424f 100644 --- a/tools/perf/arch/x86/util/tsc.c +++ b/tools/perf/arch/x86/util/tsc.c @@ -32,7 +32,7 @@ u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc) int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc, struct perf_tsc_conversion *tc) { - bool cap_usr_time_zero; + bool cap_user_time_zero; u32 seq; int i = 0; @@ -42,7 +42,7 @@ int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc, tc->time_mult = pc->time_mult; tc->time_shift = pc->time_shift; tc->time_zero = pc->time_zero; - cap_usr_time_zero = pc->cap_usr_time_zero; + cap_user_time_zero = pc->cap_user_time_zero; rmb(); if (pc->lock == seq && !(seq & 1)) break; @@ -52,7 +52,7 @@ int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc, } } - if (!cap_usr_time_zero) + if (!cap_user_time_zero) return -EOPNOTSUPP; return 0; From b18855500fc40da050512d9df82d2f1471e59642 Mon Sep 17 00:00:00 2001 From: Vladimir Davydov Date: Sun, 15 Sep 2013 17:49:13 +0400 Subject: [PATCH 070/523] sched/balancing: Fix 'local->avg_load > sds->avg_load' case in calculate_imbalance() In busiest->group_imb case we can come to calculate_imbalance() with local->avg_load >= busiest->avg_load >= sds->avg_load. This can result in imbalance overflow, because it is calculated as follows env->imbalance = min( max_pull * busiest->group_power, (sds->avg_load - local->avg_load) * local->group_power) / SCHED_POWER_SCALE; As a result we can end up constantly bouncing tasks from one cpu to another if there are pinned tasks. Fix this by skipping the assignment and assuming imbalance=0 in case local->avg_load > sds->avg_load. [ The bug can be caught by running 2*N cpuhogs pinned to two logical cpus belonging to different cores on an HT-enabled machine with N logical cpus: just look at se.nr_migrations growth. ] Signed-off-by: Vladimir Davydov Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/8f596cc6bc0e5e655119dc892c9bfcad26e971f4.1379252740.git.vdavydov@parallels.com Signed-off-by: Ingo Molnar --- kernel/sched/fair.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 11cd13667359..0b99aae339cb 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4896,7 +4896,8 @@ static inline void calculate_imbalance(struct lb_env *env, struct sd_lb_stats *s * max load less than avg load(as we skip the groups at or below * its cpu_power, while calculating max_load..) */ - if (busiest->avg_load < sds->avg_load) { + if (busiest->avg_load <= sds->avg_load || + local->avg_load >= sds->avg_load) { env->imbalance = 0; return fix_small_imbalance(env, sds); } From 3029ede39373c368f402a76896600d85a4f7121b Mon Sep 17 00:00:00 2001 From: Vladimir Davydov Date: Sun, 15 Sep 2013 17:49:14 +0400 Subject: [PATCH 071/523] sched/balancing: Fix 'local->avg_load > busiest->avg_load' case in fix_small_imbalance() In busiest->group_imb case we can come to fix_small_imbalance() with local->avg_load > busiest->avg_load. This can result in wrong imbalance fix-up, because there is the following check there where all the members are unsigned: if (busiest->avg_load - local->avg_load + scaled_busy_load_per_task >= (scaled_busy_load_per_task * imbn)) { env->imbalance = busiest->load_per_task; return; } As a result we can end up constantly bouncing tasks from one cpu to another if there are pinned tasks. Fix it by substituting the subtraction with an equivalent addition in the check. [ The bug can be caught by running 2*N cpuhogs pinned to two logical cpus belonging to different cores on an HT-enabled machine with N logical cpus: just look at se.nr_migrations growth. ] Signed-off-by: Vladimir Davydov Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/ef167822e5c5b2d96cf5b0e3e4f4bdff3f0414a2.1379252740.git.vdavydov@parallels.com Signed-off-by: Ingo Molnar --- kernel/sched/fair.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 0b99aae339cb..2aedaccebcc8 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4823,8 +4823,8 @@ void fix_small_imbalance(struct lb_env *env, struct sd_lb_stats *sds) (busiest->load_per_task * SCHED_POWER_SCALE) / busiest->group_power; - if (busiest->avg_load - local->avg_load + scaled_busy_load_per_task >= - (scaled_busy_load_per_task * imbn)) { + if (busiest->avg_load + scaled_busy_load_per_task >= + local->avg_load + (scaled_busy_load_per_task * imbn)) { env->imbalance = busiest->load_per_task; return; } From 7e3115ef5149fc502e3a2e80719dba54a8e7409d Mon Sep 17 00:00:00 2001 From: Vladimir Davydov Date: Sat, 14 Sep 2013 19:39:46 +0400 Subject: [PATCH 072/523] sched/balancing: Fix cfs_rq->task_h_load calculation Patch a003a2 (sched: Consider runnable load average in move_tasks()) sets all top-level cfs_rqs' h_load to rq->avg.load_avg_contrib, which is always 0. This mistype leads to all tasks having weight 0 when load balancing in a cpu-cgroup enabled setup. There obviously should be sum of weights of all runnable tasks there instead. Fix it. Signed-off-by: Vladimir Davydov Reviewed-by: Paul Turner Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1379173186-11944-1-git-send-email-vdavydov@parallels.com Signed-off-by: Ingo Molnar --- kernel/sched/fair.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 2aedaccebcc8..7c70201fbc61 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4242,7 +4242,7 @@ static void update_cfs_rq_h_load(struct cfs_rq *cfs_rq) } if (!se) { - cfs_rq->h_load = rq->avg.load_avg_contrib; + cfs_rq->h_load = cfs_rq->runnable_load_avg; cfs_rq->last_h_load_update = now; } From 5ea330a75bd86b2b2a01d7b85c516983238306fb Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Wed, 18 Sep 2013 19:14:22 -0400 Subject: [PATCH 073/523] dm snapshot: workaround for a false positive lockdep warning The kernel reports a lockdep warning if a snapshot is invalidated because it runs out of space. The lockdep warning was triggered by commit 0976dfc1d0cd80a4e9dfaf87bd87 ("workqueue: Catch more locking problems with flush_work()") in v3.5. The warning is false positive. The real cause for the warning is that the lockdep engine treats different instances of md->lock as a single lock. This patch is a workaround - we use flush_workqueue instead of flush_work. This code path is not performance sensitive (it is called only on initialization or invalidation), thus it doesn't matter that we flush the whole workqueue. The real fix for the problem would be to teach the lockdep engine to treat different instances of md->lock as separate locks. Signed-off-by: Mikulas Patocka Acked-by: Alasdair G Kergon Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org # 3.5+ --- drivers/md/dm-snap-persistent.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c index 3ac415675b6c..4caa8e6d59d7 100644 --- a/drivers/md/dm-snap-persistent.c +++ b/drivers/md/dm-snap-persistent.c @@ -256,7 +256,7 @@ static int chunk_io(struct pstore *ps, void *area, chunk_t chunk, int rw, */ INIT_WORK_ONSTACK(&req.work, do_metadata); queue_work(ps->metadata_wq, &req.work); - flush_work(&req.work); + flush_workqueue(ps->metadata_wq); return req.result; } From 60e356f381954d79088d0455e357db48cfdd6857 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Wed, 18 Sep 2013 19:40:42 -0400 Subject: [PATCH 074/523] dm-snapshot: fix performance degradation due to small hash size LVM2, since version 2.02.96, creates origin with zero size, then loads the snapshot driver and then loads the origin. Consequently, the snapshot driver sees the origin size zero and sets the hash size to the lower bound 64. Such small hash table causes performance degradation. This patch changes it so that the hash size is determined by the size of snapshot volume, not minimum of origin and snapshot size. It doesn't make sense to set the snapshot size significantly larger than the origin size, so we do not need to take origin size into account when calculating the hash size. Signed-off-by: Mikulas Patocka Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org --- drivers/md/dm-snap.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index c434e5aab2df..aec57d76db5d 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c @@ -725,17 +725,16 @@ static int calc_max_buckets(void) */ static int init_hash_tables(struct dm_snapshot *s) { - sector_t hash_size, cow_dev_size, origin_dev_size, max_buckets; + sector_t hash_size, cow_dev_size, max_buckets; /* * Calculate based on the size of the original volume or * the COW volume... */ cow_dev_size = get_dev_size(s->cow->bdev); - origin_dev_size = get_dev_size(s->origin->bdev); max_buckets = calc_max_buckets(); - hash_size = min(origin_dev_size, cow_dev_size) >> s->store->chunk_shift; + hash_size = cow_dev_size >> s->store->chunk_shift; hash_size = min(hash_size, max_buckets); if (hash_size < 64) From f84cb8a46a771f36a04a02c61ea635c968ed5f6a Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Thu, 19 Sep 2013 12:13:58 -0400 Subject: [PATCH 075/523] dm mpath: disable WRITE SAME if it fails Workaround the SCSI layer's problematic WRITE SAME heuristics by disabling WRITE SAME in the DM multipath device's queue_limits if an underlying device disabled it. The WRITE SAME heuristics, with both the original commit 5db44863b6eb ("[SCSI] sd: Implement support for WRITE SAME") and the updated commit 66c28f971 ("[SCSI] sd: Update WRITE SAME heuristics"), default to enabling WRITE SAME(10) even without successfully determining it is supported. After the first failed WRITE SAME the SCSI layer will disable WRITE SAME for the device (by setting sdkp->device->no_write_same which results in 'max_write_same_sectors' in device's queue_limits to be set to 0). When a device is stacked ontop of such a SCSI device any changes to that SCSI device's queue_limits do not automatically propagate up the stack. As such, a DM multipath device will not have its WRITE SAME support disabled. This causes the block layer to continue to issue WRITE SAME requests to the mpath device which causes paths to fail and (if mpath IO isn't configured to queue when no paths are available) it will result in actual IO errors to the upper layers. This fix doesn't help configurations that have additional devices stacked ontop of the mpath device (e.g. LVM created linear DM devices ontop). A proper fix that restacks all the queue_limits from the bottom of the device stack up will need to be explored if SCSI will continue to use this model of optimistically allowing op codes and then disabling them after they fail for the first time. Before this patch: EXT4-fs (dm-6): mounted filesystem with ordered data mode. Opts: (null) device-mapper: multipath: XXX snitm debugging: got -EREMOTEIO (-121) device-mapper: multipath: XXX snitm debugging: failing WRITE SAME IO with error=-121 end_request: critical target error, dev dm-6, sector 528 dm-6: WRITE SAME failed. Manually zeroing. device-mapper: multipath: Failing path 8:112. end_request: I/O error, dev dm-6, sector 4616 dm-6: WRITE SAME failed. Manually zeroing. end_request: I/O error, dev dm-6, sector 4616 end_request: I/O error, dev dm-6, sector 5640 end_request: I/O error, dev dm-6, sector 6664 end_request: I/O error, dev dm-6, sector 7688 end_request: I/O error, dev dm-6, sector 524288 Buffer I/O error on device dm-6, logical block 65536 lost page write due to I/O error on dm-6 JBD2: Error -5 detected when updating journal superblock for dm-6-8. end_request: I/O error, dev dm-6, sector 524296 Aborting journal on device dm-6-8. end_request: I/O error, dev dm-6, sector 524288 Buffer I/O error on device dm-6, logical block 65536 lost page write due to I/O error on dm-6 JBD2: Error -5 detected when updating journal superblock for dm-6-8. # cat /sys/block/sdh/queue/write_same_max_bytes 0 # cat /sys/block/dm-6/queue/write_same_max_bytes 33553920 After this patch: EXT4-fs (dm-6): mounted filesystem with ordered data mode. Opts: (null) device-mapper: multipath: XXX snitm debugging: got -EREMOTEIO (-121) device-mapper: multipath: XXX snitm debugging: WRITE SAME I/O failed with error=-121 end_request: critical target error, dev dm-6, sector 528 dm-6: WRITE SAME failed. Manually zeroing. # cat /sys/block/sdh/queue/write_same_max_bytes 0 # cat /sys/block/dm-6/queue/write_same_max_bytes 0 It should be noted that WRITE SAME support wasn't enabled in DM multipath until v3.10. Signed-off-by: Mike Snitzer Cc: Martin K. Petersen Cc: Hannes Reinecke Cc: stable@vger.kernel.org # 3.10+ --- drivers/md/dm-mpath.c | 11 ++++++++++- drivers/md/dm.c | 11 +++++++++++ include/linux/device-mapper.h | 3 ++- 3 files changed, 23 insertions(+), 2 deletions(-) diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index 075747e25f77..e08be94959fd 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -1299,8 +1299,17 @@ static int do_end_io(struct multipath *m, struct request *clone, if (!error && !clone->errors) return 0; /* I/O complete */ - if (noretry_error(error)) + if (noretry_error(error)) { + if ((clone->cmd_flags & REQ_WRITE_SAME) && + !clone->q->limits.max_write_same_sectors) { + struct queue_limits *limits; + + /* device doesn't really support WRITE SAME, disable it */ + limits = dm_get_queue_limits(dm_table_get_md(m->ti->table)); + limits->max_write_same_sectors = 0; + } return error; + } if (mpio->pgpath) fail_path(mpio->pgpath); diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 6a5e9ed2fcc3..7b0ccdc5d65c 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2277,6 +2277,17 @@ struct target_type *dm_get_immutable_target_type(struct mapped_device *md) return md->immutable_target_type; } +/* + * The queue_limits are only valid as long as you have a reference + * count on 'md'. + */ +struct queue_limits *dm_get_queue_limits(struct mapped_device *md) +{ + BUG_ON(!atomic_read(&md->holders)); + return &md->queue->limits; +} +EXPORT_SYMBOL_GPL(dm_get_queue_limits); + /* * Fully initialize a request-based queue (->elevator, ->request_fn, etc). */ diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 653073de09e3..ed419c62dde1 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -406,13 +406,14 @@ int dm_noflush_suspending(struct dm_target *ti); union map_info *dm_get_mapinfo(struct bio *bio); union map_info *dm_get_rq_mapinfo(struct request *rq); +struct queue_limits *dm_get_queue_limits(struct mapped_device *md); + /* * Geometry functions. */ int dm_get_geometry(struct mapped_device *md, struct hd_geometry *geo); int dm_set_geometry(struct mapped_device *md, struct hd_geometry *geo); - /*----------------------------------------------------------------- * Functions for manipulating device-mapper tables. *---------------------------------------------------------------*/ From dfdaa95c7abc3dc7acf44b0c4aeac4c3c44966d6 Mon Sep 17 00:00:00 2001 From: Daniel Pieczko Date: Wed, 18 Sep 2013 10:16:24 +0100 Subject: [PATCH 076/523] sfc: Wait for MC reboot to complete before scheduling driver reset Scheduling a reset following an MC reboot event before waiting for reboot to complete results in a race that can lead to a state where must_realloc_vis is false in efx_ef10_fini_dmaq() but the VIs have been destroyed during the MC reboot. To avoid MC errors when trying to remove VIs that do not exist, wait for the MC reboot to complete before scheduling the reset. Signed-off-by: Ben Hutchings --- drivers/net/ethernet/sfc/mcdi.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/sfc/mcdi.c b/drivers/net/ethernet/sfc/mcdi.c index 128d7cdf9eb2..73143ece4832 100644 --- a/drivers/net/ethernet/sfc/mcdi.c +++ b/drivers/net/ethernet/sfc/mcdi.c @@ -800,9 +800,6 @@ static void efx_mcdi_ev_death(struct efx_nic *efx, int rc) } else { int count; - /* Nobody was waiting for an MCDI request, so trigger a reset */ - efx_schedule_reset(efx, RESET_TYPE_MC_FAILURE); - /* Consume the status word since efx_mcdi_rpc_finish() won't */ for (count = 0; count < MCDI_STATUS_DELAY_COUNT; ++count) { if (efx_mcdi_poll_reboot(efx)) @@ -810,6 +807,9 @@ static void efx_mcdi_ev_death(struct efx_nic *efx, int rc) udelay(MCDI_STATUS_DELAY_US); } mcdi->new_epoch = true; + + /* Nobody was waiting for an MCDI request, so trigger a reset */ + efx_schedule_reset(efx, RESET_TYPE_MC_FAILURE); } spin_unlock(&mcdi->iface_lock); From b2d32f03e67cc9b0ad16fc1fff87edf90f059883 Mon Sep 17 00:00:00 2001 From: Daniel Pieczko Date: Fri, 20 Sep 2013 16:45:10 +0100 Subject: [PATCH 077/523] sfc: Increase MCDI status timeout to 250ms The SFC9120 MC firmware often takes longer than 20ms to reboot and update the warm boot count in BIU_MC_SFT_STATUS_REG. A timeout of 250ms is very generous for an MC reboot. Signed-off-by: Ben Hutchings --- drivers/net/ethernet/sfc/mcdi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/sfc/mcdi.c b/drivers/net/ethernet/sfc/mcdi.c index 73143ece4832..c082562dbf4e 100644 --- a/drivers/net/ethernet/sfc/mcdi.c +++ b/drivers/net/ethernet/sfc/mcdi.c @@ -27,10 +27,10 @@ /* A reboot/assertion causes the MCDI status word to be set after the * command word is set or a REBOOT event is sent. If we notice a reboot - * via these mechanisms then wait 20ms for the status word to be set. + * via these mechanisms then wait 250ms for the status word to be set. */ #define MCDI_STATUS_DELAY_US 100 -#define MCDI_STATUS_DELAY_COUNT 200 +#define MCDI_STATUS_DELAY_COUNT 2500 #define MCDI_STATUS_SLEEP_MS \ (MCDI_STATUS_DELAY_US * MCDI_STATUS_DELAY_COUNT / 1000) From 4ca5a6cba53e13b8fd153b0762b4128fab6a3cfb Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Sun, 15 Sep 2013 23:23:07 -0400 Subject: [PATCH 078/523] drm/radeon: avoid UVD corruption on AGP cards using GPU gart MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If the user has forced the driver to use the internal GPU gart rather than AGP on an AGP card, force the buffers to vram as well. Signed-off-by: Alex Deucher Reviewed-by: Christian König Tested-by: Dieter Nützel Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_cs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c index ac6ece61a476..80285e35bc65 100644 --- a/drivers/gpu/drm/radeon/radeon_cs.c +++ b/drivers/gpu/drm/radeon/radeon_cs.c @@ -85,7 +85,7 @@ static int radeon_cs_parser_relocs(struct radeon_cs_parser *p) VRAM, also but everything into VRAM on AGP cards to avoid image corruptions */ if (p->ring == R600_RING_TYPE_UVD_INDEX && - (i == 0 || p->rdev->flags & RADEON_IS_AGP)) { + (i == 0 || drm_pci_device_is_agp(p->rdev->ddev))) { /* TODO: is this still needed for NI+ ? */ p->relocs[i].lobj.domain = RADEON_GEM_DOMAIN_VRAM; From a7ee824a6255e347ea76e2f00827e81bbe01004e Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 16 Sep 2013 17:46:00 -0400 Subject: [PATCH 079/523] drm/radeon: additional gcc fixes for radeon_atombios.c Newer versions of gcc seem to wander off into the weeds when dealing with variable sizes arrays in structs. Rather than indexing the arrays, use pointer arithmetic. Fix up spread spectrum tables. See bugs: https://bugs.freedesktop.org/show_bug.cgi?id=66932 https://bugs.freedesktop.org/show_bug.cgi?id=66972 https://bugs.freedesktop.org/show_bug.cgi?id=66945 Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/radeon_atombios.c | 66 +++++++++++++++--------- 1 file changed, 43 insertions(+), 23 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index 404e25d285ba..f79ee184ffd5 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -1367,6 +1367,7 @@ bool radeon_atombios_get_ppll_ss_info(struct radeon_device *rdev, int index = GetIndexIntoMasterTable(DATA, PPLL_SS_Info); uint16_t data_offset, size; struct _ATOM_SPREAD_SPECTRUM_INFO *ss_info; + struct _ATOM_SPREAD_SPECTRUM_ASSIGNMENT *ss_assign; uint8_t frev, crev; int i, num_indices; @@ -1378,18 +1379,21 @@ bool radeon_atombios_get_ppll_ss_info(struct radeon_device *rdev, num_indices = (size - sizeof(ATOM_COMMON_TABLE_HEADER)) / sizeof(ATOM_SPREAD_SPECTRUM_ASSIGNMENT); - + ss_assign = (struct _ATOM_SPREAD_SPECTRUM_ASSIGNMENT*) + ((u8 *)&ss_info->asSS_Info[0]); for (i = 0; i < num_indices; i++) { - if (ss_info->asSS_Info[i].ucSS_Id == id) { + if (ss_assign->ucSS_Id == id) { ss->percentage = - le16_to_cpu(ss_info->asSS_Info[i].usSpreadSpectrumPercentage); - ss->type = ss_info->asSS_Info[i].ucSpreadSpectrumType; - ss->step = ss_info->asSS_Info[i].ucSS_Step; - ss->delay = ss_info->asSS_Info[i].ucSS_Delay; - ss->range = ss_info->asSS_Info[i].ucSS_Range; - ss->refdiv = ss_info->asSS_Info[i].ucRecommendedRef_Div; + le16_to_cpu(ss_assign->usSpreadSpectrumPercentage); + ss->type = ss_assign->ucSpreadSpectrumType; + ss->step = ss_assign->ucSS_Step; + ss->delay = ss_assign->ucSS_Delay; + ss->range = ss_assign->ucSS_Range; + ss->refdiv = ss_assign->ucRecommendedRef_Div; return true; } + ss_assign = (struct _ATOM_SPREAD_SPECTRUM_ASSIGNMENT*) + ((u8 *)ss_assign + sizeof(struct _ATOM_SPREAD_SPECTRUM_ASSIGNMENT)); } } return false; @@ -1477,6 +1481,12 @@ union asic_ss_info { struct _ATOM_ASIC_INTERNAL_SS_INFO_V3 info_3; }; +union asic_ss_assignment { + struct _ATOM_ASIC_SS_ASSIGNMENT v1; + struct _ATOM_ASIC_SS_ASSIGNMENT_V2 v2; + struct _ATOM_ASIC_SS_ASSIGNMENT_V3 v3; +}; + bool radeon_atombios_get_asic_ss_info(struct radeon_device *rdev, struct radeon_atom_ss *ss, int id, u32 clock) @@ -1485,6 +1495,7 @@ bool radeon_atombios_get_asic_ss_info(struct radeon_device *rdev, int index = GetIndexIntoMasterTable(DATA, ASIC_InternalSS_Info); uint16_t data_offset, size; union asic_ss_info *ss_info; + union asic_ss_assignment *ss_assign; uint8_t frev, crev; int i, num_indices; @@ -1509,45 +1520,52 @@ bool radeon_atombios_get_asic_ss_info(struct radeon_device *rdev, num_indices = (size - sizeof(ATOM_COMMON_TABLE_HEADER)) / sizeof(ATOM_ASIC_SS_ASSIGNMENT); + ss_assign = (union asic_ss_assignment *)((u8 *)&ss_info->info.asSpreadSpectrum[0]); for (i = 0; i < num_indices; i++) { - if ((ss_info->info.asSpreadSpectrum[i].ucClockIndication == id) && - (clock <= le32_to_cpu(ss_info->info.asSpreadSpectrum[i].ulTargetClockRange))) { + if ((ss_assign->v1.ucClockIndication == id) && + (clock <= le32_to_cpu(ss_assign->v1.ulTargetClockRange))) { ss->percentage = - le16_to_cpu(ss_info->info.asSpreadSpectrum[i].usSpreadSpectrumPercentage); - ss->type = ss_info->info.asSpreadSpectrum[i].ucSpreadSpectrumMode; - ss->rate = le16_to_cpu(ss_info->info.asSpreadSpectrum[i].usSpreadRateInKhz); + le16_to_cpu(ss_assign->v1.usSpreadSpectrumPercentage); + ss->type = ss_assign->v1.ucSpreadSpectrumMode; + ss->rate = le16_to_cpu(ss_assign->v1.usSpreadRateInKhz); return true; } + ss_assign = (union asic_ss_assignment *) + ((u8 *)ss_assign + sizeof(ATOM_ASIC_SS_ASSIGNMENT)); } break; case 2: num_indices = (size - sizeof(ATOM_COMMON_TABLE_HEADER)) / sizeof(ATOM_ASIC_SS_ASSIGNMENT_V2); + ss_assign = (union asic_ss_assignment *)((u8 *)&ss_info->info_2.asSpreadSpectrum[0]); for (i = 0; i < num_indices; i++) { - if ((ss_info->info_2.asSpreadSpectrum[i].ucClockIndication == id) && - (clock <= le32_to_cpu(ss_info->info_2.asSpreadSpectrum[i].ulTargetClockRange))) { + if ((ss_assign->v2.ucClockIndication == id) && + (clock <= le32_to_cpu(ss_assign->v2.ulTargetClockRange))) { ss->percentage = - le16_to_cpu(ss_info->info_2.asSpreadSpectrum[i].usSpreadSpectrumPercentage); - ss->type = ss_info->info_2.asSpreadSpectrum[i].ucSpreadSpectrumMode; - ss->rate = le16_to_cpu(ss_info->info_2.asSpreadSpectrum[i].usSpreadRateIn10Hz); + le16_to_cpu(ss_assign->v2.usSpreadSpectrumPercentage); + ss->type = ss_assign->v2.ucSpreadSpectrumMode; + ss->rate = le16_to_cpu(ss_assign->v2.usSpreadRateIn10Hz); if ((crev == 2) && ((id == ASIC_INTERNAL_ENGINE_SS) || (id == ASIC_INTERNAL_MEMORY_SS))) ss->rate /= 100; return true; } + ss_assign = (union asic_ss_assignment *) + ((u8 *)ss_assign + sizeof(ATOM_ASIC_SS_ASSIGNMENT_V2)); } break; case 3: num_indices = (size - sizeof(ATOM_COMMON_TABLE_HEADER)) / sizeof(ATOM_ASIC_SS_ASSIGNMENT_V3); + ss_assign = (union asic_ss_assignment *)((u8 *)&ss_info->info_3.asSpreadSpectrum[0]); for (i = 0; i < num_indices; i++) { - if ((ss_info->info_3.asSpreadSpectrum[i].ucClockIndication == id) && - (clock <= le32_to_cpu(ss_info->info_3.asSpreadSpectrum[i].ulTargetClockRange))) { + if ((ss_assign->v3.ucClockIndication == id) && + (clock <= le32_to_cpu(ss_assign->v3.ulTargetClockRange))) { ss->percentage = - le16_to_cpu(ss_info->info_3.asSpreadSpectrum[i].usSpreadSpectrumPercentage); - ss->type = ss_info->info_3.asSpreadSpectrum[i].ucSpreadSpectrumMode; - ss->rate = le16_to_cpu(ss_info->info_3.asSpreadSpectrum[i].usSpreadRateIn10Hz); + le16_to_cpu(ss_assign->v3.usSpreadSpectrumPercentage); + ss->type = ss_assign->v3.ucSpreadSpectrumMode; + ss->rate = le16_to_cpu(ss_assign->v3.usSpreadRateIn10Hz); if ((id == ASIC_INTERNAL_ENGINE_SS) || (id == ASIC_INTERNAL_MEMORY_SS)) ss->rate /= 100; @@ -1555,6 +1573,8 @@ bool radeon_atombios_get_asic_ss_info(struct radeon_device *rdev, radeon_atombios_get_igp_ss_overrides(rdev, ss, id); return true; } + ss_assign = (union asic_ss_assignment *) + ((u8 *)ss_assign + sizeof(ATOM_ASIC_SS_ASSIGNMENT_V3)); } break; default: From 328a50c7b09d313ab9278f972950da414d348eb1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= Date: Wed, 18 Sep 2013 15:39:40 +0200 Subject: [PATCH 080/523] drm/radeon/cik: Fix printing of client name on VM protection fault MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The string is encoded from the MSB to the LSB of the register. Cc: stable@vger.kernel.org Signed-off-by: Michel Dänzer Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/cik.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index adbdb6503b05..c0714d72610b 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -4735,12 +4735,13 @@ static void cik_vm_decode_fault(struct radeon_device *rdev, u32 mc_id = (status & MEMORY_CLIENT_ID_MASK) >> MEMORY_CLIENT_ID_SHIFT; u32 vmid = (status & FAULT_VMID_MASK) >> FAULT_VMID_SHIFT; u32 protections = (status & PROTECTIONS_MASK) >> PROTECTIONS_SHIFT; - char *block = (char *)&mc_client; + char block[5] = { mc_client >> 24, (mc_client >> 16) & 0xff, + (mc_client >> 8) & 0xff, mc_client & 0xff, 0 }; - printk("VM fault (0x%02x, vmid %d) at page %u, %s from %s (%d)\n", + printk("VM fault (0x%02x, vmid %d) at page %u, %s from '%s' (0x%08x) (%d)\n", protections, vmid, addr, (status & MEMORY_CLIENT_RW_MASK) ? "write" : "read", - block, mc_id); + block, mc_client, mc_id); } /** From f37d6e701f2a3a04e66690397340a6417f6e053f Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Thu, 5 Sep 2013 01:46:09 +0400 Subject: [PATCH 081/523] can: pcan_usb_core: fix memory leak on failure paths in peak_usb_start() Tx and rx urbs are not deallocated if something goes wrong in peak_usb_start(). The patch fixes error handling to deallocate all the resources. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Acked-by: Stephane Grosjean Signed-off-by: Marc Kleine-Budde --- drivers/net/can/usb/peak_usb/pcan_usb_core.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c index a0f647f92bf5..0b7a4c3b01a2 100644 --- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c +++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c @@ -463,7 +463,7 @@ static int peak_usb_start(struct peak_usb_device *dev) if (i < PCAN_USB_MAX_TX_URBS) { if (i == 0) { netdev_err(netdev, "couldn't setup any tx URB\n"); - return err; + goto err_tx; } netdev_warn(netdev, "tx performance may be slow\n"); @@ -472,7 +472,7 @@ static int peak_usb_start(struct peak_usb_device *dev) if (dev->adapter->dev_start) { err = dev->adapter->dev_start(dev); if (err) - goto failed; + goto err_adapter; } dev->state |= PCAN_USB_STATE_STARTED; @@ -481,19 +481,26 @@ static int peak_usb_start(struct peak_usb_device *dev) if (dev->adapter->dev_set_bus) { err = dev->adapter->dev_set_bus(dev, 1); if (err) - goto failed; + goto err_adapter; } dev->can.state = CAN_STATE_ERROR_ACTIVE; return 0; -failed: +err_adapter: if (err == -ENODEV) netif_device_detach(dev->netdev); netdev_warn(netdev, "couldn't submit control: %d\n", err); + for (i = 0; i < PCAN_USB_MAX_TX_URBS; i++) { + usb_free_urb(dev->tx_contexts[i].urb); + dev->tx_contexts[i].urb = NULL; + } +err_tx: + usb_kill_anchored_urbs(&dev->rx_submitted); + return err; } From 29cd718beba999bda4bdbbf59b5a4d25c07e1547 Mon Sep 17 00:00:00 2001 From: Gianluca Anzolin Date: Tue, 27 Aug 2013 18:28:46 +0200 Subject: [PATCH 082/523] Bluetooth: don't release the port in rfcomm_dev_state_change() When the dlc is closed, rfcomm_dev_state_change() tries to release the port in the case it cannot get a reference to the tty. However this is racy and not even needed. Infact as Peter Hurley points out: 1. Only consider dlcs that are 'stolen' from a connected socket, ie. reused. Allocated dlcs cannot have been closed prior to port activate and so for these dlcs a tty reference will always be avail in rfcomm_dev_state_change() -- except for the conditions covered by #2b below. 2. If a tty was at some point previously created for this rfcomm, then either (a) the tty reference is still avail, so rfcomm_dev_state_change() will perform a hangup. So nothing to do, or, (b) the tty reference is no longer avail, and the tty_port will be destroyed by the last tty_port_put() in rfcomm_tty_cleanup. Again, no action required. 3. Prior to obtaining the dlc lock in rfcomm_dev_add(), rfcomm_dev_state_change() will not 'see' a rfcomm_dev so nothing to do here. 4. After releasing the dlc lock in rfcomm_dev_add(), rfcomm_dev_state_change() will 'see' an incomplete rfcomm_dev if a tty reference could not be obtained. Again, the best thing to do here is nothing. Any future attempted open() will block on rfcomm_dev_carrier_raised(). The unconnected device will exist until released by ioctl(RFCOMMRELEASEDEV). The patch removes the aforementioned code and uses the tty_port_tty_hangup() helper to hangup the tty. Signed-off-by: Gianluca Anzolin Reviewed-by: Peter Hurley Signed-off-by: Gustavo Padovan --- net/bluetooth/rfcomm/tty.c | 35 ++--------------------------------- 1 file changed, 2 insertions(+), 33 deletions(-) diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c index 6d126faf145f..84fcf9fff3ea 100644 --- a/net/bluetooth/rfcomm/tty.c +++ b/net/bluetooth/rfcomm/tty.c @@ -569,7 +569,6 @@ static void rfcomm_dev_data_ready(struct rfcomm_dlc *dlc, struct sk_buff *skb) static void rfcomm_dev_state_change(struct rfcomm_dlc *dlc, int err) { struct rfcomm_dev *dev = dlc->owner; - struct tty_struct *tty; if (!dev) return; @@ -581,38 +580,8 @@ static void rfcomm_dev_state_change(struct rfcomm_dlc *dlc, int err) DPM_ORDER_DEV_AFTER_PARENT); wake_up_interruptible(&dev->port.open_wait); - } else if (dlc->state == BT_CLOSED) { - tty = tty_port_tty_get(&dev->port); - if (!tty) { - if (test_bit(RFCOMM_RELEASE_ONHUP, &dev->flags)) { - /* Drop DLC lock here to avoid deadlock - * 1. rfcomm_dev_get will take rfcomm_dev_lock - * but in rfcomm_dev_add there's lock order: - * rfcomm_dev_lock -> dlc lock - * 2. tty_port_put will deadlock if it's - * the last reference - * - * FIXME: when we release the lock anything - * could happen to dev, even its destruction - */ - rfcomm_dlc_unlock(dlc); - if (rfcomm_dev_get(dev->id) == NULL) { - rfcomm_dlc_lock(dlc); - return; - } - - if (!test_and_set_bit(RFCOMM_TTY_RELEASED, - &dev->flags)) - tty_port_put(&dev->port); - - tty_port_put(&dev->port); - rfcomm_dlc_lock(dlc); - } - } else { - tty_hangup(tty); - tty_kref_put(tty); - } - } + } else if (dlc->state == BT_CLOSED) + tty_port_tty_hangup(&dev->port, false); } static void rfcomm_dev_modem_status(struct rfcomm_dlc *dlc, u8 v24_sig) From cc9fa74e2a195f7bab27fbbc4896d2fe3ec32150 Mon Sep 17 00:00:00 2001 From: Andre Naujoks Date: Fri, 13 Sep 2013 19:37:11 +0200 Subject: [PATCH 083/523] slip/slcan: added locking in wakeup function The locking is needed, since the the internal buffer for the CAN frames is changed during the wakeup call. This could cause buffer inconsistencies under high loads, especially for the outgoing short CAN packet skbuffs. The needed locks led to deadlocks before commit "5ede52538ee2b2202d9dff5b06c33bfde421e6e4 tty: Remove extra wakeup from pty write() path", which removed the direct callback to the wakeup function from the tty layer. As slcan.c is based on slip.c the issue in the original code is fixed, too. Signed-off-by: Andre Naujoks Acked-by: Oliver Hartkopp Acked-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- drivers/net/can/slcan.c | 3 +++ drivers/net/slip/slip.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c index 874188ba06f7..d571e2e9708f 100644 --- a/drivers/net/can/slcan.c +++ b/drivers/net/can/slcan.c @@ -286,11 +286,13 @@ static void slcan_write_wakeup(struct tty_struct *tty) if (!sl || sl->magic != SLCAN_MAGIC || !netif_running(sl->dev)) return; + spin_lock(&sl->lock); if (sl->xleft <= 0) { /* Now serial buffer is almost free & we can start * transmission of another packet */ sl->dev->stats.tx_packets++; clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); + spin_unlock(&sl->lock); netif_wake_queue(sl->dev); return; } @@ -298,6 +300,7 @@ static void slcan_write_wakeup(struct tty_struct *tty) actual = tty->ops->write(tty, sl->xhead, sl->xleft); sl->xleft -= actual; sl->xhead += actual; + spin_unlock(&sl->lock); } /* Send a can_frame to a TTY queue. */ diff --git a/drivers/net/slip/slip.c b/drivers/net/slip/slip.c index a34d6bf5e43b..cc70ecfc7062 100644 --- a/drivers/net/slip/slip.c +++ b/drivers/net/slip/slip.c @@ -429,11 +429,13 @@ static void slip_write_wakeup(struct tty_struct *tty) if (!sl || sl->magic != SLIP_MAGIC || !netif_running(sl->dev)) return; + spin_lock(&sl->lock); if (sl->xleft <= 0) { /* Now serial buffer is almost free & we can start * transmission of another packet */ sl->dev->stats.tx_packets++; clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); + spin_unlock(&sl->lock); sl_unlock(sl); return; } @@ -441,6 +443,7 @@ static void slip_write_wakeup(struct tty_struct *tty) actual = tty->ops->write(tty, sl->xhead, sl->xleft); sl->xleft -= actual; sl->xhead += actual; + spin_unlock(&sl->lock); } static void sl_tx_timeout(struct net_device *dev) From c26d436cbf7a9549ec1073480a2e3f0d3f64e02d Mon Sep 17 00:00:00 2001 From: Andre Naujoks Date: Fri, 13 Sep 2013 19:37:12 +0200 Subject: [PATCH 084/523] lib: introduce upper case hex ascii helpers To be able to use the hex ascii functions in case sensitive environments the array hex_asc_upper[] and the needed functions for hex_byte_pack_upper() are introduced. Signed-off-by: Andre Naujoks Signed-off-by: David S. Miller --- include/linux/kernel.h | 11 +++++++++++ lib/hexdump.c | 2 ++ 2 files changed, 13 insertions(+) diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 482ad2d84a32..672ddc4de4af 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -439,6 +439,17 @@ static inline char *hex_byte_pack(char *buf, u8 byte) return buf; } +extern const char hex_asc_upper[]; +#define hex_asc_upper_lo(x) hex_asc_upper[((x) & 0x0f)] +#define hex_asc_upper_hi(x) hex_asc_upper[((x) & 0xf0) >> 4] + +static inline char *hex_byte_pack_upper(char *buf, u8 byte) +{ + *buf++ = hex_asc_upper_hi(byte); + *buf++ = hex_asc_upper_lo(byte); + return buf; +} + static inline char * __deprecated pack_hex_byte(char *buf, u8 byte) { return hex_byte_pack(buf, byte); diff --git a/lib/hexdump.c b/lib/hexdump.c index 3f0494c9d57a..8499c810909a 100644 --- a/lib/hexdump.c +++ b/lib/hexdump.c @@ -14,6 +14,8 @@ const char hex_asc[] = "0123456789abcdef"; EXPORT_SYMBOL(hex_asc); +const char hex_asc_upper[] = "0123456789ABCDEF"; +EXPORT_SYMBOL(hex_asc_upper); /** * hex_to_bin - convert a hex digit to its real value From 87397fe10db0e7ee85041eee5a40052cab66aaff Mon Sep 17 00:00:00 2001 From: Andre Naujoks Date: Fri, 13 Sep 2013 19:37:13 +0200 Subject: [PATCH 085/523] slcan: rewrite of slc_bump and slc_encaps The old implementation was heavy on str* functions and sprintf calls. This version is more manual, but faster. Profiling just the printing of a 3 char CAN-id resulted in 60 instructions for the manual method and over 2000 for the sprintf method. Bear in mind the profiling was done against libc and not the kernel sprintf. Together with this rewrite an issue with sending and receiving of RTR frames has been fixed by Oliver for the cases that the DLC is not zero. Signed-off-by: Andre Naujoks Tested-by: Oliver Hartkopp Acked-by: Oliver Hartkopp Acked-by: Marc Kleine-Budde Signed-off-by: David S. Miller --- drivers/net/can/slcan.c | 140 +++++++++++++++++++++++++--------------- 1 file changed, 89 insertions(+), 51 deletions(-) diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c index d571e2e9708f..25377e547f9b 100644 --- a/drivers/net/can/slcan.c +++ b/drivers/net/can/slcan.c @@ -76,6 +76,10 @@ MODULE_PARM_DESC(maxdev, "Maximum number of slcan interfaces"); /* maximum rx buffer len: extended CAN frame with timestamp */ #define SLC_MTU (sizeof("T1111222281122334455667788EA5F\r")+1) +#define SLC_CMD_LEN 1 +#define SLC_SFF_ID_LEN 3 +#define SLC_EFF_ID_LEN 8 + struct slcan { int magic; @@ -142,47 +146,63 @@ static void slc_bump(struct slcan *sl) { struct sk_buff *skb; struct can_frame cf; - int i, dlc_pos, tmp; - unsigned long ultmp; - char cmd = sl->rbuff[0]; + int i, tmp; + u32 tmpid; + char *cmd = sl->rbuff; - if ((cmd != 't') && (cmd != 'T') && (cmd != 'r') && (cmd != 'R')) - return; + cf.can_id = 0; - if (cmd & 0x20) /* tiny chars 'r' 't' => standard frame format */ - dlc_pos = 4; /* dlc position tiiid */ - else - dlc_pos = 9; /* dlc position Tiiiiiiiid */ - - if (!((sl->rbuff[dlc_pos] >= '0') && (sl->rbuff[dlc_pos] < '9'))) - return; - - cf.can_dlc = sl->rbuff[dlc_pos] - '0'; /* get can_dlc from ASCII val */ - - sl->rbuff[dlc_pos] = 0; /* terminate can_id string */ - - if (kstrtoul(sl->rbuff+1, 16, &ultmp)) - return; - - cf.can_id = ultmp; - - if (!(cmd & 0x20)) /* NO tiny chars => extended frame format */ + switch (*cmd) { + case 'r': + cf.can_id = CAN_RTR_FLAG; + /* fallthrough */ + case 't': + /* store dlc ASCII value and terminate SFF CAN ID string */ + cf.can_dlc = sl->rbuff[SLC_CMD_LEN + SLC_SFF_ID_LEN]; + sl->rbuff[SLC_CMD_LEN + SLC_SFF_ID_LEN] = 0; + /* point to payload data behind the dlc */ + cmd += SLC_CMD_LEN + SLC_SFF_ID_LEN + 1; + break; + case 'R': + cf.can_id = CAN_RTR_FLAG; + /* fallthrough */ + case 'T': cf.can_id |= CAN_EFF_FLAG; + /* store dlc ASCII value and terminate EFF CAN ID string */ + cf.can_dlc = sl->rbuff[SLC_CMD_LEN + SLC_EFF_ID_LEN]; + sl->rbuff[SLC_CMD_LEN + SLC_EFF_ID_LEN] = 0; + /* point to payload data behind the dlc */ + cmd += SLC_CMD_LEN + SLC_EFF_ID_LEN + 1; + break; + default: + return; + } - if ((cmd | 0x20) == 'r') /* RTR frame */ - cf.can_id |= CAN_RTR_FLAG; + if (kstrtou32(sl->rbuff + SLC_CMD_LEN, 16, &tmpid)) + return; + + cf.can_id |= tmpid; + + /* get can_dlc from sanitized ASCII value */ + if (cf.can_dlc >= '0' && cf.can_dlc < '9') + cf.can_dlc -= '0'; + else + return; *(u64 *) (&cf.data) = 0; /* clear payload */ - for (i = 0, dlc_pos++; i < cf.can_dlc; i++) { - tmp = hex_to_bin(sl->rbuff[dlc_pos++]); - if (tmp < 0) - return; - cf.data[i] = (tmp << 4); - tmp = hex_to_bin(sl->rbuff[dlc_pos++]); - if (tmp < 0) - return; - cf.data[i] |= tmp; + /* RTR frames may have a dlc > 0 but they never have any data bytes */ + if (!(cf.can_id & CAN_RTR_FLAG)) { + for (i = 0; i < cf.can_dlc; i++) { + tmp = hex_to_bin(*cmd++); + if (tmp < 0) + return; + cf.data[i] = (tmp << 4); + tmp = hex_to_bin(*cmd++); + if (tmp < 0) + return; + cf.data[i] |= tmp; + } } skb = dev_alloc_skb(sizeof(struct can_frame) + @@ -209,7 +229,6 @@ static void slc_bump(struct slcan *sl) /* parse tty input stream */ static void slcan_unesc(struct slcan *sl, unsigned char s) { - if ((s == '\r') || (s == '\a')) { /* CR or BEL ends the pdu */ if (!test_and_clear_bit(SLF_ERROR, &sl->flags) && (sl->rcount > 4)) { @@ -236,27 +255,46 @@ static void slcan_unesc(struct slcan *sl, unsigned char s) /* Encapsulate one can_frame and stuff into a TTY queue. */ static void slc_encaps(struct slcan *sl, struct can_frame *cf) { - int actual, idx, i; - char cmd; + int actual, i; + unsigned char *pos; + unsigned char *endpos; + canid_t id = cf->can_id; + + pos = sl->xbuff; if (cf->can_id & CAN_RTR_FLAG) - cmd = 'R'; /* becomes 'r' in standard frame format */ + *pos = 'R'; /* becomes 'r' in standard frame format (SFF) */ else - cmd = 'T'; /* becomes 't' in standard frame format */ + *pos = 'T'; /* becomes 't' in standard frame format (SSF) */ - if (cf->can_id & CAN_EFF_FLAG) - sprintf(sl->xbuff, "%c%08X%d", cmd, - cf->can_id & CAN_EFF_MASK, cf->can_dlc); - else - sprintf(sl->xbuff, "%c%03X%d", cmd | 0x20, - cf->can_id & CAN_SFF_MASK, cf->can_dlc); + /* determine number of chars for the CAN-identifier */ + if (cf->can_id & CAN_EFF_FLAG) { + id &= CAN_EFF_MASK; + endpos = pos + SLC_EFF_ID_LEN; + } else { + *pos |= 0x20; /* convert R/T to lower case for SFF */ + id &= CAN_SFF_MASK; + endpos = pos + SLC_SFF_ID_LEN; + } - idx = strlen(sl->xbuff); + /* build 3 (SFF) or 8 (EFF) digit CAN identifier */ + pos++; + while (endpos >= pos) { + *endpos-- = hex_asc_upper[id & 0xf]; + id >>= 4; + } - for (i = 0; i < cf->can_dlc; i++) - sprintf(&sl->xbuff[idx + 2*i], "%02X", cf->data[i]); + pos += (cf->can_id & CAN_EFF_FLAG) ? SLC_EFF_ID_LEN : SLC_SFF_ID_LEN; - strcat(sl->xbuff, "\r"); /* add terminating character */ + *pos++ = cf->can_dlc + '0'; + + /* RTR frames may have a dlc > 0 but they never have any data bytes */ + if (!(cf->can_id & CAN_RTR_FLAG)) { + for (i = 0; i < cf->can_dlc; i++) + pos = hex_byte_pack_upper(pos, cf->data[i]); + } + + *pos++ = '\r'; /* Order of next two lines is *very* important. * When we are sending a little amount of data, @@ -267,8 +305,8 @@ static void slc_encaps(struct slcan *sl, struct can_frame *cf) * 14 Oct 1994 Dmitry Gorodchanin. */ set_bit(TTY_DO_WRITE_WAKEUP, &sl->tty->flags); - actual = sl->tty->ops->write(sl->tty, sl->xbuff, strlen(sl->xbuff)); - sl->xleft = strlen(sl->xbuff) - actual; + actual = sl->tty->ops->write(sl->tty, sl->xbuff, pos - sl->xbuff); + sl->xleft = (pos - sl->xbuff) - actual; sl->xhead = sl->xbuff + actual; sl->dev->stats.tx_bytes += cf->can_dlc; } From a537314e0b539e22934d3cffeb0b1f476e56491c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= Date: Wed, 18 Sep 2013 15:39:41 +0200 Subject: [PATCH 086/523] drm/radeon/cik: Fix encoding of number of banks in tiling configuration info MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There are multiple valid values, not just 0 or 1. Required to properly support 2D tiling in the userspace drivers. Cc: stable@vger.kernel.org Signed-off-by: Michel Dänzer Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/cik.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index c0714d72610b..5e6802d8a59a 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -2845,10 +2845,8 @@ static void cik_gpu_init(struct radeon_device *rdev) rdev->config.cik.tile_config |= (3 << 0); break; } - if ((mc_arb_ramcfg & NOOFBANK_MASK) >> NOOFBANK_SHIFT) - rdev->config.cik.tile_config |= 1 << 4; - else - rdev->config.cik.tile_config |= 0 << 4; + rdev->config.cik.tile_config |= + ((mc_arb_ramcfg & NOOFBANK_MASK) >> NOOFBANK_SHIFT) << 4; rdev->config.cik.tile_config |= ((gb_addr_config & PIPE_INTERLEAVE_SIZE_MASK) >> PIPE_INTERLEAVE_SIZE_SHIFT) << 8; rdev->config.cik.tile_config |= From 42baf21d91d4f52f5b9a4d11dc8e7b1e3b93de7c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= Date: Wed, 18 Sep 2013 18:23:51 +0200 Subject: [PATCH 087/523] drm/radeon/cik: Add tiling mode index for 1D tiled depth/stencil surfaces MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit CIK uses a different index for 1D DST surfaces compared to SI. Expose the new index so libdrm_radeon can use it properly for userspace drivers. Signed-off-by: Michel Dänzer Signed-off-by: Alex Deucher --- include/uapi/drm/radeon_drm.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/uapi/drm/radeon_drm.h b/include/uapi/drm/radeon_drm.h index fa8b3adf9ffb..46d41e8b0dcc 100644 --- a/include/uapi/drm/radeon_drm.h +++ b/include/uapi/drm/radeon_drm.h @@ -1007,4 +1007,6 @@ struct drm_radeon_info { #define SI_TILE_MODE_DEPTH_STENCIL_2D_4AA 3 #define SI_TILE_MODE_DEPTH_STENCIL_2D_8AA 2 +#define CIK_TILE_MODE_DEPTH_STENCIL_1D 5 + #endif From 0eb3448aa6b31fbf24c31756aba7940cac5ad6b8 Mon Sep 17 00:00:00 2001 From: Alex Ivanov Date: Fri, 20 Sep 2013 17:36:06 +0400 Subject: [PATCH 088/523] drm/radeon: Make r100_cp_ring_info() and radeon_ring_gfx() safe (v2) Prevent NULL pointer dereference in case when radeon_ring_fini() did it's job. Reading of r100_cp_ring_info and radeon_ring_gfx debugfs entries will lead to a KP if ring buffer was deallocated, e.g. on failed ring test. Seen on PA-RISC machine having "radeon: ring test failed (scratch(0x8504)=0xCAFEDEAD)" issue. v2: agd5f: add some parens around ring->ready check Signed-off-by: Alex Ivanov Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/r100.c | 8 +++++--- drivers/gpu/drm/radeon/radeon_ring.c | 8 +++++--- 2 files changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index 24175717307b..d71333033b2b 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -2933,9 +2933,11 @@ static int r100_debugfs_cp_ring_info(struct seq_file *m, void *data) seq_printf(m, "CP_RB_RPTR 0x%08x\n", rdp); seq_printf(m, "%u free dwords in ring\n", ring->ring_free_dw); seq_printf(m, "%u dwords in ring\n", count); - for (j = 0; j <= count; j++) { - i = (rdp + j) & ring->ptr_mask; - seq_printf(m, "r[%04d]=0x%08x\n", i, ring->ring[i]); + if (ring->ready) { + for (j = 0; j <= count; j++) { + i = (rdp + j) & ring->ptr_mask; + seq_printf(m, "r[%04d]=0x%08x\n", i, ring->ring[i]); + } } return 0; } diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c index 46a25f037b84..18254e1c3e71 100644 --- a/drivers/gpu/drm/radeon/radeon_ring.c +++ b/drivers/gpu/drm/radeon/radeon_ring.c @@ -839,9 +839,11 @@ static int radeon_debugfs_ring_info(struct seq_file *m, void *data) * packet that is the root issue */ i = (ring->rptr + ring->ptr_mask + 1 - 32) & ring->ptr_mask; - for (j = 0; j <= (count + 32); j++) { - seq_printf(m, "r[%5d]=0x%08x\n", i, ring->ring[i]); - i = (i + 1) & ring->ptr_mask; + if (ring->ready) { + for (j = 0; j <= (count + 32); j++) { + seq_printf(m, "r[%5d]=0x%08x\n", i, ring->ring[i]); + i = (i + 1) & ring->ptr_mask; + } } return 0; } From 74d290da476f672ad756634d12aa707375d3564d Mon Sep 17 00:00:00 2001 From: Jim McDonough Date: Sat, 21 Sep 2013 10:36:10 -0500 Subject: [PATCH 089/523] [CIFS] Provide sane values for nlink Since we don't get info about the number of links from the readdir linfo levels, stat() will return 0 for st_nlink, and in particular, samba re-exported shares will show directories as files (as samba is keying off st_nlink before evaluating how to set the dos modebits) when doing a dir or ls. Copy nlink to the inode, unless it wasn't provided. Provide sane values if we don't have an existing one and none was provided. Signed-off-by: Jim McDonough Reviewed-by: Jeff Layton Reviewed-by: David Disseldorp Signed-off-by: Steve French --- fs/cifs/cifsglob.h | 1 + fs/cifs/inode.c | 45 +++++++++++++++++++++++++++++++++++++++------ fs/cifs/readdir.c | 3 +++ 3 files changed, 43 insertions(+), 6 deletions(-) diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 9c72be6fb0df..52b6f6c26bfc 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -1268,6 +1268,7 @@ struct dfs_info3_param { #define CIFS_FATTR_DELETE_PENDING 0x2 #define CIFS_FATTR_NEED_REVAL 0x4 #define CIFS_FATTR_INO_COLLISION 0x8 +#define CIFS_FATTR_UNKNOWN_NLINK 0x10 struct cifs_fattr { u32 cf_flags; diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index f9ff9c173f78..867b7cdc794a 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -120,6 +120,33 @@ cifs_revalidate_cache(struct inode *inode, struct cifs_fattr *fattr) cifs_i->invalid_mapping = true; } +/* + * copy nlink to the inode, unless it wasn't provided. Provide + * sane values if we don't have an existing one and none was provided + */ +static void +cifs_nlink_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr) +{ + /* + * if we're in a situation where we can't trust what we + * got from the server (readdir, some non-unix cases) + * fake reasonable values + */ + if (fattr->cf_flags & CIFS_FATTR_UNKNOWN_NLINK) { + /* only provide fake values on a new inode */ + if (inode->i_state & I_NEW) { + if (fattr->cf_cifsattrs & ATTR_DIRECTORY) + set_nlink(inode, 2); + else + set_nlink(inode, 1); + } + return; + } + + /* we trust the server, so update it */ + set_nlink(inode, fattr->cf_nlink); +} + /* populate an inode with info from a cifs_fattr struct */ void cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr) @@ -134,7 +161,7 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr) inode->i_mtime = fattr->cf_mtime; inode->i_ctime = fattr->cf_ctime; inode->i_rdev = fattr->cf_rdev; - set_nlink(inode, fattr->cf_nlink); + cifs_nlink_fattr_to_inode(inode, fattr); inode->i_uid = fattr->cf_uid; inode->i_gid = fattr->cf_gid; @@ -541,6 +568,7 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info, fattr->cf_bytes = le64_to_cpu(info->AllocationSize); fattr->cf_createtime = le64_to_cpu(info->CreationTime); + fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks); if (fattr->cf_cifsattrs & ATTR_DIRECTORY) { fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode; fattr->cf_dtype = DT_DIR; @@ -548,7 +576,8 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info, * Server can return wrong NumberOfLinks value for directories * when Unix extensions are disabled - fake it. */ - fattr->cf_nlink = 2; + if (!tcon->unix_ext) + fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK; } else if (fattr->cf_cifsattrs & ATTR_REPARSE) { fattr->cf_mode = S_IFLNK; fattr->cf_dtype = DT_LNK; @@ -561,11 +590,15 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info, if (fattr->cf_cifsattrs & ATTR_READONLY) fattr->cf_mode &= ~(S_IWUGO); - fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks); - if (fattr->cf_nlink < 1) { - cifs_dbg(1, "replacing bogus file nlink value %u\n", + /* + * Don't accept zero nlink from non-unix servers unless + * delete is pending. Instead mark it as unknown. + */ + if ((fattr->cf_nlink < 1) && !tcon->unix_ext && + !info->DeletePending) { + cifs_dbg(1, "bogus file nlink value %u\n", fattr->cf_nlink); - fattr->cf_nlink = 1; + fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK; } } diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c index 42ef03be089f..53a75f3d0179 100644 --- a/fs/cifs/readdir.c +++ b/fs/cifs/readdir.c @@ -180,6 +180,9 @@ cifs_fill_common_info(struct cifs_fattr *fattr, struct cifs_sb_info *cifs_sb) fattr->cf_dtype = DT_REG; } + /* non-unix readdir doesn't provide nlink */ + fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK; + if (fattr->cf_cifsattrs & ATTR_READONLY) fattr->cf_mode &= ~S_IWUGO; From df1d0584b2292df5b9d576d7e5246e94616220a1 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Thu, 29 Aug 2013 17:14:49 +0200 Subject: [PATCH 090/523] ARM: shmobile: update SDHI DT compatibility string to the - format Currently DT compatibility strings of both types can be found in the kernel sources: - and -, whereas a unique format should be followed and the former one is preferred. This patch converts the SDHI MMC driver and its users to the common standard. This is safe for now, since ATM no real products are using this driver with DT. Signed-off-by: Guennadi Liakhovetski Acked-by: Chris Ball [Removed r8a7740.dtsi portion as it is not applicable] Signed-off-by: Simon Horman --- .../devicetree/bindings/mmc/tmio_mmc.txt | 17 ++++++++++------- arch/arm/boot/dts/r8a73a4.dtsi | 6 +++--- arch/arm/boot/dts/r8a7790.dtsi | 8 ++++---- arch/arm/boot/dts/sh73a0.dtsi | 6 +++--- drivers/mmc/host/sh_mobile_sdhi.c | 16 ++++++++-------- 5 files changed, 28 insertions(+), 25 deletions(-) diff --git a/Documentation/devicetree/bindings/mmc/tmio_mmc.txt b/Documentation/devicetree/bindings/mmc/tmio_mmc.txt index df204e18e030..6a2a1160a70d 100644 --- a/Documentation/devicetree/bindings/mmc/tmio_mmc.txt +++ b/Documentation/devicetree/bindings/mmc/tmio_mmc.txt @@ -9,12 +9,15 @@ compulsory and any optional properties, common to all SD/MMC drivers, as described in mmc.txt, can be used. Additionally the following tmio_mmc-specific optional bindings can be used. +Required properties: +- compatible: "renesas,sdhi-shmobile" - a generic sh-mobile SDHI unit + "renesas,sdhi-sh7372" - SDHI IP on SH7372 SoC + "renesas,sdhi-sh73a0" - SDHI IP on SH73A0 SoC + "renesas,sdhi-r8a73a4" - SDHI IP on R8A73A4 SoC + "renesas,sdhi-r8a7740" - SDHI IP on R8A7740 SoC + "renesas,sdhi-r8a7778" - SDHI IP on R8A7778 SoC + "renesas,sdhi-r8a7779" - SDHI IP on R8A7779 SoC + "renesas,sdhi-r8a7790" - SDHI IP on R8A7790 SoC + Optional properties: - toshiba,mmc-wrprotect-disable: write-protect detection is unavailable - -When used with Renesas SDHI hardware, the following compatibility strings -configure various model-specific properties: - -"renesas,sh7372-sdhi": (default) compatible with SH7372 -"renesas,r8a7740-sdhi": compatible with R8A7740: certain MMC/SD commands have to - wait for the interface to become idle. diff --git a/arch/arm/boot/dts/r8a73a4.dtsi b/arch/arm/boot/dts/r8a73a4.dtsi index 6c26caa880f2..658fcc537576 100644 --- a/arch/arm/boot/dts/r8a73a4.dtsi +++ b/arch/arm/boot/dts/r8a73a4.dtsi @@ -193,7 +193,7 @@ }; sdhi0: sdhi@ee100000 { - compatible = "renesas,r8a73a4-sdhi"; + compatible = "renesas,sdhi-r8a73a4"; reg = <0 0xee100000 0 0x100>; interrupt-parent = <&gic>; interrupts = <0 165 4>; @@ -202,7 +202,7 @@ }; sdhi1: sdhi@ee120000 { - compatible = "renesas,r8a73a4-sdhi"; + compatible = "renesas,sdhi-r8a73a4"; reg = <0 0xee120000 0 0x100>; interrupt-parent = <&gic>; interrupts = <0 166 4>; @@ -211,7 +211,7 @@ }; sdhi2: sdhi@ee140000 { - compatible = "renesas,r8a73a4-sdhi"; + compatible = "renesas,sdhi-r8a73a4"; reg = <0 0xee140000 0 0x100>; interrupt-parent = <&gic>; interrupts = <0 167 4>; diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi index 3b879e7c697c..885f9f4bf26f 100644 --- a/arch/arm/boot/dts/r8a7790.dtsi +++ b/arch/arm/boot/dts/r8a7790.dtsi @@ -152,7 +152,7 @@ }; sdhi0: sdhi@ee100000 { - compatible = "renesas,r8a7790-sdhi"; + compatible = "renesas,sdhi-r8a7790"; reg = <0 0xee100000 0 0x100>; interrupt-parent = <&gic>; interrupts = <0 165 4>; @@ -161,7 +161,7 @@ }; sdhi1: sdhi@ee120000 { - compatible = "renesas,r8a7790-sdhi"; + compatible = "renesas,sdhi-r8a7790"; reg = <0 0xee120000 0 0x100>; interrupt-parent = <&gic>; interrupts = <0 166 4>; @@ -170,7 +170,7 @@ }; sdhi2: sdhi@ee140000 { - compatible = "renesas,r8a7790-sdhi"; + compatible = "renesas,sdhi-r8a7790"; reg = <0 0xee140000 0 0x100>; interrupt-parent = <&gic>; interrupts = <0 167 4>; @@ -179,7 +179,7 @@ }; sdhi3: sdhi@ee160000 { - compatible = "renesas,r8a7790-sdhi"; + compatible = "renesas,sdhi-r8a7790"; reg = <0 0xee160000 0 0x100>; interrupt-parent = <&gic>; interrupts = <0 168 4>; diff --git a/arch/arm/boot/dts/sh73a0.dtsi b/arch/arm/boot/dts/sh73a0.dtsi index ba59a5875a10..3955c7606a6f 100644 --- a/arch/arm/boot/dts/sh73a0.dtsi +++ b/arch/arm/boot/dts/sh73a0.dtsi @@ -196,7 +196,7 @@ }; sdhi0: sdhi@ee100000 { - compatible = "renesas,r8a7740-sdhi"; + compatible = "renesas,sdhi-r8a7740"; reg = <0xee100000 0x100>; interrupt-parent = <&gic>; interrupts = <0 83 4 @@ -208,7 +208,7 @@ /* SDHI1 and SDHI2 have no CD pins, no need for CD IRQ */ sdhi1: sdhi@ee120000 { - compatible = "renesas,r8a7740-sdhi"; + compatible = "renesas,sdhi-r8a7740"; reg = <0xee120000 0x100>; interrupt-parent = <&gic>; interrupts = <0 88 4 @@ -219,7 +219,7 @@ }; sdhi2: sdhi@ee140000 { - compatible = "renesas,r8a7740-sdhi"; + compatible = "renesas,sdhi-r8a7740"; reg = <0xee140000 0x100>; interrupt-parent = <&gic>; interrupts = <0 104 4 diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c index 87ed3fb5149a..f344659dceac 100644 --- a/drivers/mmc/host/sh_mobile_sdhi.c +++ b/drivers/mmc/host/sh_mobile_sdhi.c @@ -113,14 +113,14 @@ static const struct sh_mobile_sdhi_ops sdhi_ops = { }; static const struct of_device_id sh_mobile_sdhi_of_match[] = { - { .compatible = "renesas,shmobile-sdhi" }, - { .compatible = "renesas,sh7372-sdhi" }, - { .compatible = "renesas,sh73a0-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], }, - { .compatible = "renesas,r8a73a4-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], }, - { .compatible = "renesas,r8a7740-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], }, - { .compatible = "renesas,r8a7778-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], }, - { .compatible = "renesas,r8a7779-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], }, - { .compatible = "renesas,r8a7790-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], }, + { .compatible = "renesas,sdhi-shmobile" }, + { .compatible = "renesas,sdhi-sh7372" }, + { .compatible = "renesas,sdhi-sh73a0", .data = &sh_mobile_sdhi_of_cfg[0], }, + { .compatible = "renesas,sdhi-r8a73a4", .data = &sh_mobile_sdhi_of_cfg[0], }, + { .compatible = "renesas,sdhi-r8a7740", .data = &sh_mobile_sdhi_of_cfg[0], }, + { .compatible = "renesas,sdhi-r8a7778", .data = &sh_mobile_sdhi_of_cfg[0], }, + { .compatible = "renesas,sdhi-r8a7779", .data = &sh_mobile_sdhi_of_cfg[0], }, + { .compatible = "renesas,sdhi-r8a7790", .data = &sh_mobile_sdhi_of_cfg[0], }, {}, }; MODULE_DEVICE_TABLE(of, sh_mobile_sdhi_of_match); From 48c8b96f21817aad695246ef020b849d466cc502 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Sat, 14 Sep 2013 04:29:22 +0400 Subject: [PATCH 091/523] ARM: shmobile: Lager: add Micrel KSZ8041 PHY fixup Currently on the Lager board NFS timeouts/delays are seen when booting. That turned out to happen because the SoC's ETH_LINK signal turns on and off after each packet. It is connected to Micrel KSZ8041 PHY's LED0 signal. Ether LEDs on the Lager board are named LINK and ACTIVE which corresponds to non-default 01 setting of the PHY control register 1 bits 14-15. The 'sh_eth' driver resets the PHY when opening the network device, so we have to set the mentioned bits back to 01 from the default 00 value which causes bouncing of ETH_LINK. That can be achieved using the PHY platform fixup mechanism if we also modify the driver to use it.. Signed-off-by: Sergei Shtylyov Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/board-lager.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-shmobile/board-lager.c b/arch/arm/mach-shmobile/board-lager.c index ffb6f0ac7606..5930af8d434f 100644 --- a/arch/arm/mach-shmobile/board-lager.c +++ b/arch/arm/mach-shmobile/board-lager.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include #include @@ -155,6 +156,30 @@ static void __init lager_add_standard_devices(void) ðer_pdata, sizeof(ether_pdata)); } +/* + * Ether LEDs on the Lager board are named LINK and ACTIVE which corresponds + * to non-default 01 setting of the Micrel KSZ8041 PHY control register 1 bits + * 14-15. We have to set them back to 01 from the default 00 value each time + * the PHY is reset. It's also important because the PHY's LED0 signal is + * connected to SoC's ETH_LINK signal and in the PHY's default mode it will + * bounce on and off after each packet, which we apparently want to avoid. + */ +static int lager_ksz8041_fixup(struct phy_device *phydev) +{ + u16 phyctrl1 = phy_read(phydev, 0x1e); + + phyctrl1 &= ~0xc000; + phyctrl1 |= 0x4000; + return phy_write(phydev, 0x1e, phyctrl1); +} + +static void __init lager_init(void) +{ + lager_add_standard_devices(); + + phy_register_fixup_for_id("r8a7790-ether-ff:01", lager_ksz8041_fixup); +} + static const char *lager_boards_compat_dt[] __initdata = { "renesas,lager", NULL, @@ -163,6 +188,6 @@ static const char *lager_boards_compat_dt[] __initdata = { DT_MACHINE_START(LAGER_DT, "lager") .init_early = r8a7790_init_delay, .init_time = r8a7790_timer_init, - .init_machine = lager_add_standard_devices, + .init_machine = lager_init, .dt_compat = lager_boards_compat_dt, MACHINE_END From d95bc2501da97e2884b957c48df37c258a34db8d Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Thu, 19 Sep 2013 10:32:20 +0100 Subject: [PATCH 092/523] ARM: 7839/1: entry: fix tracing of ARM-private syscalls Commit 377747c40657 ("ARM: entry: allow ARM-private syscalls to be restarted") reworked the low-level syscall dispatcher to allow restarting of ARM-private syscalls. Unfortunately, this relocated the label used to dispatch a private syscall from the trace path, so that the invocation would be bypassed altogether! This causes applications to fail under strace as soon as they rely on a private syscall (e.g. set_tls): set_tls(0xb6fad4c0, 0xb6fadb98, 0xb6fb1050, 0xb6fad4c0, 0xb6fb1050) = -1 ENOSYS (Function not implemented) This patch fixes the label so that we correctly dispatch private syscalls from the trace path. Reported-by: Jason Gunthorpe Tested-by: Jason Gunthorpe Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/kernel/entry-common.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index 74ad15d1a065..bc6bd9683ba4 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -442,10 +442,10 @@ local_restart: ldrcc pc, [tbl, scno, lsl #2] @ call sys_* routine add r1, sp, #S_OFF - cmp scno, #(__ARM_NR_BASE - __NR_SYSCALL_BASE) +2: cmp scno, #(__ARM_NR_BASE - __NR_SYSCALL_BASE) eor r0, scno, #__NR_SYSCALL_BASE @ put OS number back bcs arm_syscall -2: mov why, #0 @ no longer a real syscall + mov why, #0 @ no longer a real syscall b sys_ni_syscall @ not private func #if defined(CONFIG_OABI_COMPAT) || !defined(CONFIG_AEABI) From c4a30c3b2997bbc7d81cd0f5fde43599700834f5 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 22 Sep 2013 11:08:50 +0100 Subject: [PATCH 093/523] ARM: only allow kernel mode neon with AEABI This prevents the linker erroring with: arm-linux-ld: error: arch/arm/lib/xor-neon.o uses VFP instructions, whereas arch/arm/lib/built-in.o does not arm-linux-ld: failed to merge target specific data of file arch/arm/lib/xor-neon.o This is due to the non-neon files being marked as containing FPA data/ instructions (even though they do not) being mixed with files which contain VFP, which is an incompatible floating point format. Signed-off-by: Russell King --- arch/arm/Kconfig | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 3f7714d8d2d2..1ad6fb6c094d 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -2217,8 +2217,7 @@ config NEON config KERNEL_MODE_NEON bool "Support for NEON in kernel mode" - default n - depends on NEON + depends on NEON && AEABI help Say Y to include support for NEON in kernel mode. From 40190c85f427dcfdbab5dbef4ffd2510d649da1f Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Sat, 21 Sep 2013 11:23:50 +0100 Subject: [PATCH 094/523] ARM: 7837/3: fix Thumb-2 bug in AES assembler code Patch 638591c enabled building the AES assembler code in Thumb2 mode. However, this code used arithmetic involving PC rather than adr{l} instructions to generate PC-relative references to the lookup tables, and this needs to take into account the different PC offset when running in Thumb mode. Signed-off-by: Ard Biesheuvel Acked-by: Nicolas Pitre Cc: stable@vger.kernel.org Signed-off-by: Russell King --- arch/arm/crypto/aes-armv4.S | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/crypto/aes-armv4.S b/arch/arm/crypto/aes-armv4.S index 19d6cd6f29f9..3a14ea8fe97e 100644 --- a/arch/arm/crypto/aes-armv4.S +++ b/arch/arm/crypto/aes-armv4.S @@ -148,7 +148,7 @@ AES_Te: @ const AES_KEY *key) { .align 5 ENTRY(AES_encrypt) - sub r3,pc,#8 @ AES_encrypt + adr r3,AES_encrypt stmdb sp!,{r1,r4-r12,lr} mov r12,r0 @ inp mov r11,r2 @@ -381,7 +381,7 @@ _armv4_AES_encrypt: .align 5 ENTRY(private_AES_set_encrypt_key) _armv4_AES_set_encrypt_key: - sub r3,pc,#8 @ AES_set_encrypt_key + adr r3,_armv4_AES_set_encrypt_key teq r0,#0 moveq r0,#-1 beq .Labrt @@ -843,7 +843,7 @@ AES_Td: @ const AES_KEY *key) { .align 5 ENTRY(AES_decrypt) - sub r3,pc,#8 @ AES_decrypt + adr r3,AES_decrypt stmdb sp!,{r1,r4-r12,lr} mov r12,r0 @ inp mov r11,r2 From 7cd402b30a701c2b4d38a98281a00fc5e3680b13 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Sun, 1 Sep 2013 20:33:49 -0700 Subject: [PATCH 095/523] ARM: shmobile: armadillo: fixup ether pinctrl naming e5c9b4cd665106d9b5397114ea81a53059410b6a ("sh_eth: get R8A7740 support out of #ifdef") exchanged sh-eth driver name to r8a7740-gether, but, eva_pinctrl_map[] didn't follow it. Fixes it. Signed-off-by: Kuninori Morimoto Signed-off-by: Laurent Pinchart Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/board-armadillo800eva.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-shmobile/board-armadillo800eva.c b/arch/arm/mach-shmobile/board-armadillo800eva.c index 5bd1479d3deb..7f8f6076d360 100644 --- a/arch/arm/mach-shmobile/board-armadillo800eva.c +++ b/arch/arm/mach-shmobile/board-armadillo800eva.c @@ -1108,9 +1108,9 @@ static const struct pinctrl_map eva_pinctrl_map[] = { PIN_MAP_MUX_GROUP_DEFAULT("asoc-simple-card.1", "pfc-r8a7740", "fsib_mclk_in", "fsib"), /* GETHER */ - PIN_MAP_MUX_GROUP_DEFAULT("sh-eth", "pfc-r8a7740", + PIN_MAP_MUX_GROUP_DEFAULT("r8a7740-gether", "pfc-r8a7740", "gether_mii", "gether"), - PIN_MAP_MUX_GROUP_DEFAULT("sh-eth", "pfc-r8a7740", + PIN_MAP_MUX_GROUP_DEFAULT("r8a7740-gether", "pfc-r8a7740", "gether_int", "gether"), /* HDMI */ PIN_MAP_MUX_GROUP_DEFAULT("sh-mobile-hdmi", "pfc-r8a7740", From 01eb2d18fd5d7b1539b0023790bc3101aeee522c Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 11 Sep 2013 15:51:01 +0200 Subject: [PATCH 096/523] gpio: rcar: Remove #gpio-range-cells DT property usage Commit a1bc260bb5f5d95da854be7898202d788e94448d ("gpio: clean up gpio-ranges documentation") deprecated the #gpio-range-cells property. Replace its usage with a hardcoded value in the gpio-rcar driver. Signed-off-by: Laurent Pinchart Acked-by: Linus Walleij Signed-off-by: Simon Horman --- drivers/gpio/gpio-rcar.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c index e3745eb07570..6038966ab045 100644 --- a/drivers/gpio/gpio-rcar.c +++ b/drivers/gpio/gpio-rcar.c @@ -293,10 +293,9 @@ static void gpio_rcar_parse_pdata(struct gpio_rcar_priv *p) if (pdata) { p->config = *pdata; } else if (IS_ENABLED(CONFIG_OF) && np) { - ret = of_parse_phandle_with_args(np, "gpio-ranges", - "#gpio-range-cells", 0, &args); - p->config.number_of_pins = ret == 0 && args.args_count == 3 - ? args.args[2] + ret = of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, + &args); + p->config.number_of_pins = ret == 0 ? args.args[2] : RCAR_MAX_GPIO_PER_BANK; p->config.gpio_base = -1; } From 3786f86b60833f32e3eeb016fcf8c324f8147e00 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 11 Sep 2013 15:51:02 +0200 Subject: [PATCH 097/523] ARM: shmobile: Remove #gpio-ranges-cells DT property This property is no longer required by the GPIO binding. Remove it. Signed-off-by: Laurent Pinchart Signed-off-by: Simon Horman --- arch/arm/boot/dts/r8a7778.dtsi | 1 - arch/arm/boot/dts/r8a7779.dtsi | 1 - arch/arm/boot/dts/r8a7790.dtsi | 1 - 3 files changed, 3 deletions(-) diff --git a/arch/arm/boot/dts/r8a7778.dtsi b/arch/arm/boot/dts/r8a7778.dtsi index 45ac404ab6d8..3577aba82583 100644 --- a/arch/arm/boot/dts/r8a7778.dtsi +++ b/arch/arm/boot/dts/r8a7778.dtsi @@ -96,6 +96,5 @@ pfc: pfc@fffc0000 { compatible = "renesas,pfc-r8a7778"; reg = <0xfffc000 0x118>; - #gpio-range-cells = <3>; }; }; diff --git a/arch/arm/boot/dts/r8a7779.dtsi b/arch/arm/boot/dts/r8a7779.dtsi index 23a62447359c..ebbe507fcbfa 100644 --- a/arch/arm/boot/dts/r8a7779.dtsi +++ b/arch/arm/boot/dts/r8a7779.dtsi @@ -188,7 +188,6 @@ pfc: pfc@fffc0000 { compatible = "renesas,pfc-r8a7779"; reg = <0xfffc0000 0x23c>; - #gpio-range-cells = <3>; }; thermal@ffc48000 { diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi index 885f9f4bf26f..413b4c29e782 100644 --- a/arch/arm/boot/dts/r8a7790.dtsi +++ b/arch/arm/boot/dts/r8a7790.dtsi @@ -148,7 +148,6 @@ pfc: pfc@e6060000 { compatible = "renesas,pfc-r8a7790"; reg = <0 0xe6060000 0 0x250>; - #gpio-range-cells = <3>; }; sdhi0: sdhi@ee100000 { From b6a9c1ef3d82c1efb66340a27e810bad63e046ed Mon Sep 17 00:00:00 2001 From: Yaniv Rosner Date: Sun, 22 Sep 2013 14:59:22 +0300 Subject: [PATCH 098/523] bnx2x: Generalize KR work-around Previously, in case of KR link down, the driver would reset the PHY and restart auto negotiation only when old Warpcore microcode was used (below D108). This patch comes to generalize this by keep trying to restart KR link, regardless of Warpcore microcode, since it was found that it solves another link issue which source is a link-partner. As part of this change, the signal detect is no longer a condition to apply the work-around to cover this new case. Like before, as long as the link is down, AN will be restarted every 2 seconds. Signed-off-by: Yaniv Rosner Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- .../net/ethernet/broadcom/bnx2x/bnx2x_link.c | 32 +++++-------------- 1 file changed, 8 insertions(+), 24 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c index d60a2ea3da19..12ef8e1a2dad 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c @@ -3715,7 +3715,6 @@ static void bnx2x_warpcore_enable_AN_KR(struct bnx2x_phy *phy, struct link_params *params, struct link_vars *vars) { u16 lane, i, cl72_ctrl, an_adv = 0; - u16 ucode_ver; struct bnx2x *bp = params->bp; static struct bnx2x_reg_set reg_set[] = { {MDIO_WC_DEVAD, MDIO_WC_REG_SERDESDIGITAL_CONTROL1000X2, 0x7}, @@ -3806,15 +3805,7 @@ static void bnx2x_warpcore_enable_AN_KR(struct bnx2x_phy *phy, /* Advertise pause */ bnx2x_ext_phy_set_pause(params, phy, vars); - /* Set KR Autoneg Work-Around flag for Warpcore version older than D108 - */ - bnx2x_cl45_read(bp, phy, MDIO_WC_DEVAD, - MDIO_WC_REG_UC_INFO_B1_VERSION, &ucode_ver); - if (ucode_ver < 0xd108) { - DP(NETIF_MSG_LINK, "Enable AN KR work-around. WC ver:0x%x\n", - ucode_ver); - vars->rx_tx_asic_rst = MAX_KR_LINK_RETRY; - } + vars->rx_tx_asic_rst = MAX_KR_LINK_RETRY; bnx2x_cl45_read_or_write(bp, phy, MDIO_WC_DEVAD, MDIO_WC_REG_DIGITAL5_MISC7, 0x100); @@ -4347,20 +4338,14 @@ static void bnx2x_warpcore_config_runtime(struct bnx2x_phy *phy, struct bnx2x *bp = params->bp; u32 serdes_net_if; u16 gp_status1 = 0, lnkup = 0, lnkup_kr = 0; - u16 lane = bnx2x_get_warpcore_lane(phy, params); vars->turn_to_run_wc_rt = vars->turn_to_run_wc_rt ? 0 : 1; if (!vars->turn_to_run_wc_rt) return; - /* Return if there is no link partner */ - if (!(bnx2x_warpcore_get_sigdet(phy, params))) { - DP(NETIF_MSG_LINK, "bnx2x_warpcore_get_sigdet false\n"); - return; - } - if (vars->rx_tx_asic_rst) { + u16 lane = bnx2x_get_warpcore_lane(phy, params); serdes_net_if = (REG_RD(bp, params->shmem_base + offsetof(struct shmem_region, dev_info. port_hw_config[params->port].default_cfg)) & @@ -4375,14 +4360,8 @@ static void bnx2x_warpcore_config_runtime(struct bnx2x_phy *phy, /*10G KR*/ lnkup_kr = (gp_status1 >> (12+lane)) & 0x1; - DP(NETIF_MSG_LINK, - "gp_status1 0x%x\n", gp_status1); - if (lnkup_kr || lnkup) { - vars->rx_tx_asic_rst = 0; - DP(NETIF_MSG_LINK, - "link up, rx_tx_asic_rst 0x%x\n", - vars->rx_tx_asic_rst); + vars->rx_tx_asic_rst = 0; } else { /* Reset the lane to see if link comes up.*/ bnx2x_warpcore_reset_lane(bp, phy, 1); @@ -5757,6 +5736,11 @@ static int bnx2x_warpcore_read_status(struct bnx2x_phy *phy, rc = bnx2x_get_link_speed_duplex(phy, params, vars, link_up, gp_speed, duplex); + /* In case of KR link down, start up the recovering procedure */ + if ((!link_up) && (phy->media_type == ETH_PHY_KR) && + (!(phy->flags & FLAGS_WC_DUAL_MODE))) + vars->rx_tx_asic_rst = MAX_KR_LINK_RETRY; + DP(NETIF_MSG_LINK, "duplex %x flow_ctrl 0x%x link_status 0x%x\n", vars->duplex, vars->flow_ctrl, vars->link_status); return rc; From 4e4b14c9f861e19e560abb4a12eca971568639f5 Mon Sep 17 00:00:00 2001 From: Yaniv Rosner Date: Sun, 22 Sep 2013 14:59:23 +0300 Subject: [PATCH 099/523] bnx2x: KR2 disablement fix Relocate bnx2x_disable_kr2 function, and use it to disable KR2 in case it is not configured in order to clear it's configuration, otherwise the link may come up at 20G instead of the requested 10G-KR. In addition, restart AN after disabling KR2 as part of the KR2 work-around. Signed-off-by: Yaniv Rosner Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- .../net/ethernet/broadcom/bnx2x/bnx2x_link.c | 76 ++++++++++--------- 1 file changed, 39 insertions(+), 37 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c index 12ef8e1a2dad..84798bb8c020 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c @@ -3684,6 +3684,41 @@ static void bnx2x_warpcore_enable_AN_KR2(struct bnx2x_phy *phy, bnx2x_update_link_attr(params, vars->link_attr_sync); } +static void bnx2x_disable_kr2(struct link_params *params, + struct link_vars *vars, + struct bnx2x_phy *phy) +{ + struct bnx2x *bp = params->bp; + int i; + static struct bnx2x_reg_set reg_set[] = { + /* Step 1 - Program the TX/RX alignment markers */ + {MDIO_WC_DEVAD, MDIO_WC_REG_CL82_USERB1_TX_CTRL5, 0x7690}, + {MDIO_WC_DEVAD, MDIO_WC_REG_CL82_USERB1_TX_CTRL7, 0xe647}, + {MDIO_WC_DEVAD, MDIO_WC_REG_CL82_USERB1_TX_CTRL6, 0xc4f0}, + {MDIO_WC_DEVAD, MDIO_WC_REG_CL82_USERB1_TX_CTRL9, 0x7690}, + {MDIO_WC_DEVAD, MDIO_WC_REG_CL82_USERB1_RX_CTRL11, 0xe647}, + {MDIO_WC_DEVAD, MDIO_WC_REG_CL82_USERB1_RX_CTRL10, 0xc4f0}, + {MDIO_WC_DEVAD, MDIO_WC_REG_CL73_USERB0_CTRL, 0x000c}, + {MDIO_WC_DEVAD, MDIO_WC_REG_CL73_BAM_CTRL1, 0x6000}, + {MDIO_WC_DEVAD, MDIO_WC_REG_CL73_BAM_CTRL3, 0x0000}, + {MDIO_WC_DEVAD, MDIO_WC_REG_CL73_BAM_CODE_FIELD, 0x0002}, + {MDIO_WC_DEVAD, MDIO_WC_REG_ETA_CL73_OUI1, 0x0000}, + {MDIO_WC_DEVAD, MDIO_WC_REG_ETA_CL73_OUI2, 0x0af7}, + {MDIO_WC_DEVAD, MDIO_WC_REG_ETA_CL73_OUI3, 0x0af7}, + {MDIO_WC_DEVAD, MDIO_WC_REG_ETA_CL73_LD_BAM_CODE, 0x0002}, + {MDIO_WC_DEVAD, MDIO_WC_REG_ETA_CL73_LD_UD_CODE, 0x0000} + }; + DP(NETIF_MSG_LINK, "Disabling 20G-KR2\n"); + + for (i = 0; i < ARRAY_SIZE(reg_set); i++) + bnx2x_cl45_write(bp, phy, reg_set[i].devad, reg_set[i].reg, + reg_set[i].val); + vars->link_attr_sync &= ~LINK_ATTR_SYNC_KR2_ENABLE; + bnx2x_update_link_attr(params, vars->link_attr_sync); + + vars->check_kr2_recovery_cnt = CHECK_KR2_RECOVERY_CNT; +} + static void bnx2x_warpcore_set_lpi_passthrough(struct bnx2x_phy *phy, struct link_params *params) { @@ -3829,6 +3864,8 @@ static void bnx2x_warpcore_enable_AN_KR(struct bnx2x_phy *phy, bnx2x_set_aer_mmd(params, phy); bnx2x_warpcore_enable_AN_KR2(phy, params, vars); + } else { + bnx2x_disable_kr2(params, vars, phy); } /* Enable Autoneg: only on the main lane */ @@ -13416,43 +13453,6 @@ static void bnx2x_sfp_tx_fault_detection(struct bnx2x_phy *phy, } } } -static void bnx2x_disable_kr2(struct link_params *params, - struct link_vars *vars, - struct bnx2x_phy *phy) -{ - struct bnx2x *bp = params->bp; - int i; - static struct bnx2x_reg_set reg_set[] = { - /* Step 1 - Program the TX/RX alignment markers */ - {MDIO_WC_DEVAD, MDIO_WC_REG_CL82_USERB1_TX_CTRL5, 0x7690}, - {MDIO_WC_DEVAD, MDIO_WC_REG_CL82_USERB1_TX_CTRL7, 0xe647}, - {MDIO_WC_DEVAD, MDIO_WC_REG_CL82_USERB1_TX_CTRL6, 0xc4f0}, - {MDIO_WC_DEVAD, MDIO_WC_REG_CL82_USERB1_TX_CTRL9, 0x7690}, - {MDIO_WC_DEVAD, MDIO_WC_REG_CL82_USERB1_RX_CTRL11, 0xe647}, - {MDIO_WC_DEVAD, MDIO_WC_REG_CL82_USERB1_RX_CTRL10, 0xc4f0}, - {MDIO_WC_DEVAD, MDIO_WC_REG_CL73_USERB0_CTRL, 0x000c}, - {MDIO_WC_DEVAD, MDIO_WC_REG_CL73_BAM_CTRL1, 0x6000}, - {MDIO_WC_DEVAD, MDIO_WC_REG_CL73_BAM_CTRL3, 0x0000}, - {MDIO_WC_DEVAD, MDIO_WC_REG_CL73_BAM_CODE_FIELD, 0x0002}, - {MDIO_WC_DEVAD, MDIO_WC_REG_ETA_CL73_OUI1, 0x0000}, - {MDIO_WC_DEVAD, MDIO_WC_REG_ETA_CL73_OUI2, 0x0af7}, - {MDIO_WC_DEVAD, MDIO_WC_REG_ETA_CL73_OUI3, 0x0af7}, - {MDIO_WC_DEVAD, MDIO_WC_REG_ETA_CL73_LD_BAM_CODE, 0x0002}, - {MDIO_WC_DEVAD, MDIO_WC_REG_ETA_CL73_LD_UD_CODE, 0x0000} - }; - DP(NETIF_MSG_LINK, "Disabling 20G-KR2\n"); - - for (i = 0; i < ARRAY_SIZE(reg_set); i++) - bnx2x_cl45_write(bp, phy, reg_set[i].devad, reg_set[i].reg, - reg_set[i].val); - vars->link_attr_sync &= ~LINK_ATTR_SYNC_KR2_ENABLE; - bnx2x_update_link_attr(params, vars->link_attr_sync); - - vars->check_kr2_recovery_cnt = CHECK_KR2_RECOVERY_CNT; - /* Restart AN on leading lane */ - bnx2x_warpcore_restart_AN_KR(phy, params); -} - static void bnx2x_kr2_recovery(struct link_params *params, struct link_vars *vars, struct bnx2x_phy *phy) @@ -13530,6 +13530,8 @@ static void bnx2x_check_kr2_wa(struct link_params *params, /* Disable KR2 on both lanes */ DP(NETIF_MSG_LINK, "BP=0x%x, NP=0x%x\n", base_page, next_page); bnx2x_disable_kr2(params, vars, phy); + /* Restart AN on leading lane */ + bnx2x_warpcore_restart_AN_KR(phy, params); return; } } From 0afbd74a1608d9d9dcc8f806e36e283ec83e07d5 Mon Sep 17 00:00:00 2001 From: Yaniv Rosner Date: Sun, 22 Sep 2013 14:59:24 +0300 Subject: [PATCH 100/523] bnx2x: 57840 non-external loopback test fail on 1G when 1G-optic module was plugged in, internal loopback test failed because the driver used to check the optic module (with no need), and for 1G optic module, the link speed was forced down to 1G, while the XMAC (10G MAC) was enabled. This patch avoid accessing optic module in case internal loopback was selected, and update the link speed in case 1G optic module was detected during init stage. Signed-off-by: Yaniv Rosner Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- .../net/ethernet/broadcom/bnx2x/bnx2x_link.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c index 84798bb8c020..5c6d46c61942 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c @@ -4523,10 +4523,14 @@ static void bnx2x_warpcore_config_init(struct bnx2x_phy *phy, * enabled transmitter to avoid current leakage in case * no module is connected */ - if (bnx2x_is_sfp_module_plugged(phy, params)) - bnx2x_sfp_module_detection(phy, params); - else - bnx2x_sfp_e3_set_transmitter(params, phy, 1); + if ((params->loopback_mode == LOOPBACK_NONE) || + (params->loopback_mode == LOOPBACK_EXT)) { + if (bnx2x_is_sfp_module_plugged(phy, params)) + bnx2x_sfp_module_detection(phy, params); + else + bnx2x_sfp_e3_set_transmitter(params, + phy, 1); + } bnx2x_warpcore_config_sfi(phy, params); break; @@ -6528,6 +6532,11 @@ static int bnx2x_link_initialize(struct link_params *params, params->phy[INT_PHY].config_init(phy, params, vars); } + /* Re-read this value in case it was changed inside config_init due to + * limitations of optic module + */ + vars->line_speed = params->phy[INT_PHY].req_line_speed; + /* Init external phy*/ if (non_ext_phy) { if (params->phy[INT_PHY].supported & From 869952e350411a769f339da913ec73c4d3f18ec2 Mon Sep 17 00:00:00 2001 From: Yaniv Rosner Date: Sun, 22 Sep 2013 14:59:25 +0300 Subject: [PATCH 101/523] bnx2x: Specific Active-DAC is not detected on 57810 Fix Warpcore mode setting when active DAC (Direct Attached Cable) is detected. Signed-off-by: Yaniv Rosner Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c index 5c6d46c61942..dc67566645d2 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c @@ -175,6 +175,7 @@ typedef int (*read_sfp_module_eeprom_func_p)(struct bnx2x_phy *phy, #define EDC_MODE_LINEAR 0x0022 #define EDC_MODE_LIMITING 0x0044 #define EDC_MODE_PASSIVE_DAC 0x0055 +#define EDC_MODE_ACTIVE_DAC 0x0066 /* ETS defines*/ #define DCBX_INVALID_COS (0xFF) @@ -8110,7 +8111,10 @@ static int bnx2x_get_edc_mode(struct bnx2x_phy *phy, if (copper_module_type & SFP_EEPROM_FC_TX_TECH_BITMASK_COPPER_ACTIVE) { DP(NETIF_MSG_LINK, "Active Copper cable detected\n"); - check_limiting_mode = 1; + if (phy->type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_DIRECT) + *edc_mode = EDC_MODE_ACTIVE_DAC; + else + check_limiting_mode = 1; } else if (copper_module_type & SFP_EEPROM_FC_TX_TECH_BITMASK_COPPER_PASSIVE) { DP(NETIF_MSG_LINK, @@ -8585,6 +8589,7 @@ static void bnx2x_warpcore_set_limiting_mode(struct link_params *params, mode = MDIO_WC_REG_UC_INFO_B1_FIRMWARE_MODE_DEFAULT; break; case EDC_MODE_PASSIVE_DAC: + case EDC_MODE_ACTIVE_DAC: mode = MDIO_WC_REG_UC_INFO_B1_FIRMWARE_MODE_SFP_DAC; break; default: From 343f7dc4301e554d547c28f9583c8a193f7abb88 Mon Sep 17 00:00:00 2001 From: Yaniv Rosner Date: Sun, 22 Sep 2013 14:59:26 +0300 Subject: [PATCH 102/523] bnx2x: Fix 848xx duplex settings On 848xx PHY (10G-baseT), half-duplex was always advertised regardless of the actual configuration. Change the 848xx duplex settings to advertise half-duplex only if configured. Signed-off-by: Yaniv Rosner Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- .../net/ethernet/broadcom/bnx2x/bnx2x_link.c | 57 +++++++++++-------- 1 file changed, 33 insertions(+), 24 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c index dc67566645d2..51468227bf3b 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c @@ -9765,32 +9765,41 @@ static int bnx2x_848xx_cmn_config_init(struct bnx2x_phy *phy, MDIO_AN_DEVAD, MDIO_AN_REG_8481_1000T_CTRL, an_1000_val); - /* set 100 speed advertisement */ - if ((phy->req_line_speed == SPEED_AUTO_NEG) && - (phy->speed_cap_mask & - (PORT_HW_CFG_SPEED_CAPABILITY_D0_100M_FULL | - PORT_HW_CFG_SPEED_CAPABILITY_D0_100M_HALF))) { - an_10_100_val |= (1<<7); - /* Enable autoneg and restart autoneg for legacy speeds */ - autoneg_val |= (1<<9 | 1<<12); - - if (phy->req_duplex == DUPLEX_FULL) + /* Set 10/100 speed advertisement */ + if (phy->req_line_speed == SPEED_AUTO_NEG) { + if (phy->speed_cap_mask & + PORT_HW_CFG_SPEED_CAPABILITY_D0_100M_FULL) { + /* Enable autoneg and restart autoneg for legacy speeds + */ + autoneg_val |= (1<<9 | 1<<12); an_10_100_val |= (1<<8); - DP(NETIF_MSG_LINK, "Advertising 100M\n"); - } - /* set 10 speed advertisement */ - if (((phy->req_line_speed == SPEED_AUTO_NEG) && - (phy->speed_cap_mask & - (PORT_HW_CFG_SPEED_CAPABILITY_D0_10M_FULL | - PORT_HW_CFG_SPEED_CAPABILITY_D0_10M_HALF)) && - (phy->supported & - (SUPPORTED_10baseT_Half | - SUPPORTED_10baseT_Full)))) { - an_10_100_val |= (1<<5); - autoneg_val |= (1<<9 | 1<<12); - if (phy->req_duplex == DUPLEX_FULL) + DP(NETIF_MSG_LINK, "Advertising 100M-FD\n"); + } + + if (phy->speed_cap_mask & + PORT_HW_CFG_SPEED_CAPABILITY_D0_100M_HALF) { + /* Enable autoneg and restart autoneg for legacy speeds + */ + autoneg_val |= (1<<9 | 1<<12); + an_10_100_val |= (1<<7); + DP(NETIF_MSG_LINK, "Advertising 100M-HD\n"); + } + + if ((phy->speed_cap_mask & + PORT_HW_CFG_SPEED_CAPABILITY_D0_10M_FULL) && + (phy->supported & SUPPORTED_10baseT_Full)) { an_10_100_val |= (1<<6); - DP(NETIF_MSG_LINK, "Advertising 10M\n"); + autoneg_val |= (1<<9 | 1<<12); + DP(NETIF_MSG_LINK, "Advertising 10M-FD\n"); + } + + if ((phy->speed_cap_mask & + PORT_HW_CFG_SPEED_CAPABILITY_D0_10M_HALF) && + (phy->supported & SUPPORTED_10baseT_Half)) { + an_10_100_val |= (1<<5); + autoneg_val |= (1<<9 | 1<<12); + DP(NETIF_MSG_LINK, "Advertising 10M-HD\n"); + } } /* Only 10/100 are allowed to work in FORCE mode */ From cf3b425dd8d99e01214515a6754f9e69ecc6dce8 Mon Sep 17 00:00:00 2001 From: "Yan, Zheng" Date: Sun, 22 Sep 2013 16:19:13 +0800 Subject: [PATCH 103/523] perf/x86/intel: Add model number for Avoton Silvermont Signed-off-by: Yan, Zheng Cc: a.p.zijlstra@chello.nl Cc: eranian@google.com Cc: ak@linux.intel.com Link: http://lkml.kernel.org/r/1379837953-17755-1-git-send-email-zheng.z.yan@intel.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/perf_event_intel.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c index 9db76c31b3c3..f31a1655d1ff 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c @@ -2325,6 +2325,7 @@ __init int intel_pmu_init(void) break; case 55: /* Atom 22nm "Silvermont" */ + case 77: /* Avoton "Silvermont" */ memcpy(hw_cache_event_ids, slm_hw_cache_event_ids, sizeof(hw_cache_event_ids)); memcpy(hw_cache_extra_regs, slm_hw_cache_extra_regs, From 4f0acd31c31f03ba42494c8baf6c0465150e2621 Mon Sep 17 00:00:00 2001 From: Masoud Sharbiani Date: Fri, 20 Sep 2013 15:59:07 -0700 Subject: [PATCH 104/523] x86/reboot: Add quirk to make Dell C6100 use reboot=pci automatically Dell PowerEdge C6100 machines fail to completely reboot about 20% of the time. Signed-off-by: Masoud Sharbiani Signed-off-by: Vinson Lee Cc: Robin Holt Cc: Russell King Cc: Guan Xuetao Cc: Link: http://lkml.kernel.org/r/1379717947-18042-1-git-send-email-vlee@freedesktop.org Signed-off-by: Ingo Molnar --- arch/x86/kernel/reboot.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index 563ed91e6faa..5f4ad2714109 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -358,6 +358,22 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "Precision M6600"), }, }, + { /* Handle problems with rebooting on the Dell PowerEdge C6100. */ + .callback = set_pci_reboot, + .ident = "Dell PowerEdge C6100", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "C6100"), + }, + }, + { /* Some C6100 machines were shipped with vendor being 'Dell'. */ + .callback = set_pci_reboot, + .ident = "Dell PowerEdge C6100", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell"), + DMI_MATCH(DMI_PRODUCT_NAME, "C6100"), + }, + }, { } }; From 3b59e432ec9c093311e0ad057e330e04feb79007 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Vincent=20Stehl=C3=A9?= Date: Mon, 16 Sep 2013 22:50:32 +0200 Subject: [PATCH 105/523] pinctrl: fix pinconf_dbg_config_write return type MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Have pinconf_dbg_config_write() return a ssize_t. This fixes the following compilation warning: drivers/pinctrl/pinconf.c:617:2: warning: initialization from incompatible pointer type [enabled by default] drivers/pinctrl/pinconf.c:617:2: warning: (near initialization for ‘pinconf_dbg_pinconfig_fops.write’) [enabled by default] Signed-off-by: Vincent Stehlé Cc: Linus Walleij Signed-off-by: Linus Walleij --- drivers/pinctrl/pinconf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pinctrl/pinconf.c b/drivers/pinctrl/pinconf.c index a138965c01cb..1664e7865b9d 100644 --- a/drivers/pinctrl/pinconf.c +++ b/drivers/pinctrl/pinconf.c @@ -490,7 +490,7 @@ exit: * are values that should match the pinctrl-maps * reflects the new config and is driver dependant */ -static int pinconf_dbg_config_write(struct file *file, +static ssize_t pinconf_dbg_config_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct pinctrl_maps *maps_node; From 81d36c4fff7401b099d98818a517ee6bc02e93f2 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 17 Sep 2013 13:47:54 +0300 Subject: [PATCH 106/523] pinctrl: remove an unnecessary cast sizeof() is already size_t so there is no need to cast here. Generally, casting inside the min() macro instead of using min_t() is considered bad style. Signed-off-by: Dan Carpenter Signed-off-by: Linus Walleij --- drivers/pinctrl/pinconf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pinctrl/pinconf.c b/drivers/pinctrl/pinconf.c index 1664e7865b9d..b8fcc38c0d11 100644 --- a/drivers/pinctrl/pinconf.c +++ b/drivers/pinctrl/pinconf.c @@ -508,7 +508,7 @@ static ssize_t pinconf_dbg_config_write(struct file *file, int i; /* Get userspace string and assure termination */ - buf_size = min(count, (size_t)(sizeof(buf)-1)); + buf_size = min(count, sizeof(buf) - 1); if (copy_from_user(buf, user_buf, buf_size)) return -EFAULT; buf[buf_size] = 0; From f3ef11b485db3fa57e635c64a3fd86533f5e42c8 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Mon, 23 Sep 2013 15:54:20 +0800 Subject: [PATCH 107/523] regulator: wm831x-ldo: Fix max_uV for gp_ldo and aldo linear range settings Fix the linear range settings in commit 5ff26a14c3331 "regulator: wm831x-ldo: Convert to use linear ranges". For wm831x_gp_ldo: We have below equations for list voltage before converting to linear ranges: sel <= 0xe: volt = 0.9-1.6V in 50mV steps sel <= 0x1f: volt = 1.7-3.3V in 100mV steps max_uV for the first linear range should be 1600000 rather than 1650000. Fix it. For wm831x_aldo: We have below equations for list voltage before converting to linear ranges: sel <= 0xc: volt = 1-1.6V in 50mV steps sel <= 0x1f volt = 1.7-3.5V in 100mV steps max_uV for the first linear range should be 1600000 rather than 1650000. Fix it. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- drivers/regulator/wm831x-ldo.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/regulator/wm831x-ldo.c b/drivers/regulator/wm831x-ldo.c index 1432b26ef2e9..2205fbc2c37b 100644 --- a/drivers/regulator/wm831x-ldo.c +++ b/drivers/regulator/wm831x-ldo.c @@ -63,7 +63,7 @@ static irqreturn_t wm831x_ldo_uv_irq(int irq, void *data) */ static const struct regulator_linear_range wm831x_gp_ldo_ranges[] = { - { .min_uV = 900000, .max_uV = 1650000, .min_sel = 0, .max_sel = 14, + { .min_uV = 900000, .max_uV = 1600000, .min_sel = 0, .max_sel = 14, .uV_step = 50000 }, { .min_uV = 1700000, .max_uV = 3300000, .min_sel = 15, .max_sel = 31, .uV_step = 100000 }, @@ -332,7 +332,7 @@ static struct platform_driver wm831x_gp_ldo_driver = { */ static const struct regulator_linear_range wm831x_aldo_ranges[] = { - { .min_uV = 1000000, .max_uV = 1650000, .min_sel = 0, .max_sel = 12, + { .min_uV = 1000000, .max_uV = 1600000, .min_sel = 0, .max_sel = 12, .uV_step = 50000 }, { .min_uV = 1700000, .max_uV = 3500000, .min_sel = 13, .max_sel = 31, .uV_step = 100000 }, From 142a4e9079e4c81a003bd966a6bf5ca7f466057a Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Sat, 21 Sep 2013 07:55:36 -0400 Subject: [PATCH 108/523] drm/radeon: fix missed variable sized access MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit I missed this when I fixed up this file. Noticed-by: Mathias Fröhlich Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/r600_dpm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/r600_dpm.c b/drivers/gpu/drm/radeon/r600_dpm.c index e65f211a7be0..5513d8f06252 100644 --- a/drivers/gpu/drm/radeon/r600_dpm.c +++ b/drivers/gpu/drm/radeon/r600_dpm.c @@ -1084,7 +1084,7 @@ int r600_parse_extended_power_table(struct radeon_device *rdev) rdev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.entries[i].dclk = le16_to_cpu(uvd_clk->usDClkLow) | (uvd_clk->ucDClkHigh << 16); rdev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.entries[i].v = - le16_to_cpu(limits->entries[i].usVoltage); + le16_to_cpu(entry->usVoltage); entry = (ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record *) ((u8 *)entry + sizeof(ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record)); } From 7102e23288f9fb6f1c53a7ed27707cf1b4f22227 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Sat, 21 Sep 2013 13:47:57 -0400 Subject: [PATCH 109/523] drm/radeon/dpm: fetch the max clk from voltage dep tables helper This patch adds a helper function to fetch the max clock from the voltage clock dependecy tables. Clocks above that level tend to be unstable and will require additional driver tweaks in order to work properly. This patch implemented the helper function to fetch the max clocks from the dependency tables. The following patches implement the per-asic clock filtering. See bug: https://bugs.freedesktop.org/show_bug.cgi?id=68235 Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/btc_dpm.c | 17 +++++++++++++++++ drivers/gpu/drm/radeon/btc_dpm.h | 2 ++ 2 files changed, 19 insertions(+) diff --git a/drivers/gpu/drm/radeon/btc_dpm.c b/drivers/gpu/drm/radeon/btc_dpm.c index 05ff315e8e9e..0d0f065a499c 100644 --- a/drivers/gpu/drm/radeon/btc_dpm.c +++ b/drivers/gpu/drm/radeon/btc_dpm.c @@ -1168,6 +1168,23 @@ static const struct radeon_blacklist_clocks btc_blacklist_clocks[] = { 25000, 30000, RADEON_SCLK_UP } }; +void btc_get_max_clock_from_voltage_dependency_table(struct radeon_clock_voltage_dependency_table *table, + u32 *max_clock) +{ + u32 i, clock = 0; + + if ((table == NULL) || (table->count == 0)) { + *max_clock = clock; + return; + } + + for (i = 0; i < table->count; i++) { + if (clock < table->entries[i].clk) + clock = table->entries[i].clk; + } + *max_clock = clock; +} + void btc_apply_voltage_dependency_rules(struct radeon_clock_voltage_dependency_table *table, u32 clock, u16 max_voltage, u16 *voltage) { diff --git a/drivers/gpu/drm/radeon/btc_dpm.h b/drivers/gpu/drm/radeon/btc_dpm.h index 1a15e0e41950..3b6f12b7760b 100644 --- a/drivers/gpu/drm/radeon/btc_dpm.h +++ b/drivers/gpu/drm/radeon/btc_dpm.h @@ -46,6 +46,8 @@ void btc_adjust_clock_combinations(struct radeon_device *rdev, struct rv7xx_pl *pl); void btc_apply_voltage_dependency_rules(struct radeon_clock_voltage_dependency_table *table, u32 clock, u16 max_voltage, u16 *voltage); +void btc_get_max_clock_from_voltage_dependency_table(struct radeon_clock_voltage_dependency_table *table, + u32 *max_clock); void btc_apply_voltage_delta_rules(struct radeon_device *rdev, u16 max_vddc, u16 max_vddci, u16 *vddc, u16 *vddci); From 1f28fb9271b5bd8a232d11e8e3b9a25e47aefac4 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Sat, 21 Sep 2013 13:59:15 -0400 Subject: [PATCH 110/523] drm/radeon/dpm/btc: filter clocks based on voltage/clk dep tables Filter out mclk and sclk levels higher than listed in the clk voltage dependency tables. Supporting these clocks will require additional driver tweaking that isn't supported yet. See bug: https://bugs.freedesktop.org/show_bug.cgi?id=68235 Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/btc_dpm.c | 34 ++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/drivers/gpu/drm/radeon/btc_dpm.c b/drivers/gpu/drm/radeon/btc_dpm.c index 0d0f065a499c..b162e98a2953 100644 --- a/drivers/gpu/drm/radeon/btc_dpm.c +++ b/drivers/gpu/drm/radeon/btc_dpm.c @@ -2097,6 +2097,7 @@ static void btc_apply_state_adjust_rules(struct radeon_device *rdev, bool disable_mclk_switching; u32 mclk, sclk; u16 vddc, vddci; + u32 max_sclk_vddc, max_mclk_vddci, max_mclk_vddc; if ((rdev->pm.dpm.new_active_crtc_count > 1) || btc_dpm_vblank_too_short(rdev)) @@ -2138,6 +2139,39 @@ static void btc_apply_state_adjust_rules(struct radeon_device *rdev, ps->low.vddci = max_limits->vddci; } + /* limit clocks to max supported clocks based on voltage dependency tables */ + btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk, + &max_sclk_vddc); + btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk, + &max_mclk_vddci); + btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk, + &max_mclk_vddc); + + if (max_sclk_vddc) { + if (ps->low.sclk > max_sclk_vddc) + ps->low.sclk = max_sclk_vddc; + if (ps->medium.sclk > max_sclk_vddc) + ps->medium.sclk = max_sclk_vddc; + if (ps->high.sclk > max_sclk_vddc) + ps->high.sclk = max_sclk_vddc; + } + if (max_mclk_vddci) { + if (ps->low.mclk > max_mclk_vddci) + ps->low.mclk = max_mclk_vddci; + if (ps->medium.mclk > max_mclk_vddci) + ps->medium.mclk = max_mclk_vddci; + if (ps->high.mclk > max_mclk_vddci) + ps->high.mclk = max_mclk_vddci; + } + if (max_mclk_vddc) { + if (ps->low.mclk > max_mclk_vddc) + ps->low.mclk = max_mclk_vddc; + if (ps->medium.mclk > max_mclk_vddc) + ps->medium.mclk = max_mclk_vddc; + if (ps->high.mclk > max_mclk_vddc) + ps->high.mclk = max_mclk_vddc; + } + /* XXX validate the min clocks required for display */ if (disable_mclk_switching) { From 225b769d3ee96fd55ec19ea5ed3cb72bfff32ce5 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Sat, 21 Sep 2013 14:05:48 -0400 Subject: [PATCH 111/523] drm/radeon/dpm/ni: filter clocks based on voltage/clk dep tables filter out mclk and sclk levels higher than listed in the clk voltage dependency tables. Supporting these clocks will require additional driver tweaking that isn't supported yet. See bug: https://bugs.freedesktop.org/show_bug.cgi?id=68235 Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/ni_dpm.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/gpu/drm/radeon/ni_dpm.c b/drivers/gpu/drm/radeon/ni_dpm.c index 6c398a456d78..f26339028154 100644 --- a/drivers/gpu/drm/radeon/ni_dpm.c +++ b/drivers/gpu/drm/radeon/ni_dpm.c @@ -787,6 +787,7 @@ static void ni_apply_state_adjust_rules(struct radeon_device *rdev, bool disable_mclk_switching; u32 mclk, sclk; u16 vddc, vddci; + u32 max_sclk_vddc, max_mclk_vddci, max_mclk_vddc; int i; if ((rdev->pm.dpm.new_active_crtc_count > 1) || @@ -813,6 +814,29 @@ static void ni_apply_state_adjust_rules(struct radeon_device *rdev, } } + /* limit clocks to max supported clocks based on voltage dependency tables */ + btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk, + &max_sclk_vddc); + btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk, + &max_mclk_vddci); + btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk, + &max_mclk_vddc); + + for (i = 0; i < ps->performance_level_count; i++) { + if (max_sclk_vddc) { + if (ps->performance_levels[i].sclk > max_sclk_vddc) + ps->performance_levels[i].sclk = max_sclk_vddc; + } + if (max_mclk_vddci) { + if (ps->performance_levels[i].mclk > max_mclk_vddci) + ps->performance_levels[i].mclk = max_mclk_vddci; + } + if (max_mclk_vddc) { + if (ps->performance_levels[i].mclk > max_mclk_vddc) + ps->performance_levels[i].mclk = max_mclk_vddc; + } + } + /* XXX validate the min clocks required for display */ if (disable_mclk_switching) { From 78fbdf0e9dcd84d54044fa1470880b689e34f9c6 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Sat, 21 Sep 2013 14:08:28 -0400 Subject: [PATCH 112/523] drm/radeon/dpm/si: filter clocks based on voltage/clk dep tables Filter out mclk and sclk levels higher than listed in the clk voltage dependency tables. Supporting these clocks will require additional driver tweaking that isn't supported yet. See bug: https://bugs.freedesktop.org/show_bug.cgi?id=68235 Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/si_dpm.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c index cfe5d4d28915..9ace28702c76 100644 --- a/drivers/gpu/drm/radeon/si_dpm.c +++ b/drivers/gpu/drm/radeon/si_dpm.c @@ -2910,6 +2910,7 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev, bool disable_sclk_switching = false; u32 mclk, sclk; u16 vddc, vddci; + u32 max_sclk_vddc, max_mclk_vddci, max_mclk_vddc; int i; if ((rdev->pm.dpm.new_active_crtc_count > 1) || @@ -2943,6 +2944,29 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev, } } + /* limit clocks to max supported clocks based on voltage dependency tables */ + btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk, + &max_sclk_vddc); + btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk, + &max_mclk_vddci); + btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk, + &max_mclk_vddc); + + for (i = 0; i < ps->performance_level_count; i++) { + if (max_sclk_vddc) { + if (ps->performance_levels[i].sclk > max_sclk_vddc) + ps->performance_levels[i].sclk = max_sclk_vddc; + } + if (max_mclk_vddci) { + if (ps->performance_levels[i].mclk > max_mclk_vddci) + ps->performance_levels[i].mclk = max_mclk_vddci; + } + if (max_mclk_vddc) { + if (ps->performance_levels[i].mclk > max_mclk_vddc) + ps->performance_levels[i].mclk = max_mclk_vddc; + } + } + /* XXX validate the min clocks required for display */ if (disable_mclk_switching) { From a52b5eb647c728252b75365a0c44d78836661b27 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Sat, 21 Sep 2013 14:16:01 -0400 Subject: [PATCH 113/523] drm/radeon/dpm/ci: filter clocks based on voltage/clk dep tables Filter out mclk and sclk levels higher than listed in the clk voltage dependency tables. Supporting these clocks will require additional driver tweaking that isn't supported yet. See bug: https://bugs.freedesktop.org/show_bug.cgi?id=68235 Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/ci_dpm.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c index 899627443030..51e947a97edf 100644 --- a/drivers/gpu/drm/radeon/ci_dpm.c +++ b/drivers/gpu/drm/radeon/ci_dpm.c @@ -146,6 +146,8 @@ static const struct ci_pt_config_reg didt_config_ci[] = }; extern u8 rv770_get_memory_module_index(struct radeon_device *rdev); +extern void btc_get_max_clock_from_voltage_dependency_table(struct radeon_clock_voltage_dependency_table *table, + u32 *max_clock); extern int ni_copy_and_switch_arb_sets(struct radeon_device *rdev, u32 arb_freq_src, u32 arb_freq_dest); extern u8 si_get_ddr3_mclk_frequency_ratio(u32 memory_clock); @@ -712,6 +714,7 @@ static void ci_apply_state_adjust_rules(struct radeon_device *rdev, struct radeon_clock_and_voltage_limits *max_limits; bool disable_mclk_switching; u32 sclk, mclk; + u32 max_sclk_vddc, max_mclk_vddci, max_mclk_vddc; int i; if ((rdev->pm.dpm.new_active_crtc_count > 1) || @@ -739,6 +742,29 @@ static void ci_apply_state_adjust_rules(struct radeon_device *rdev, } } + /* limit clocks to max supported clocks based on voltage dependency tables */ + btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk, + &max_sclk_vddc); + btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk, + &max_mclk_vddci); + btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk, + &max_mclk_vddc); + + for (i = 0; i < ps->performance_level_count; i++) { + if (max_sclk_vddc) { + if (ps->performance_levels[i].sclk > max_sclk_vddc) + ps->performance_levels[i].sclk = max_sclk_vddc; + } + if (max_mclk_vddci) { + if (ps->performance_levels[i].mclk > max_mclk_vddci) + ps->performance_levels[i].mclk = max_mclk_vddci; + } + if (max_mclk_vddc) { + if (ps->performance_levels[i].mclk > max_mclk_vddc) + ps->performance_levels[i].mclk = max_mclk_vddc; + } + } + /* XXX validate the min clocks required for display */ if (disable_mclk_switching) { From 360991867d83e10827d907ef67206986a98953b3 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Sat, 21 Sep 2013 14:37:49 -0400 Subject: [PATCH 114/523] drm/radeon: don't set default clocks for SI when DPM is disabled This is a partial revert of c6cf7777a32da874fabec4fd1c2a579f0ba4e4dd. We need to take into account the clk voltage dependencies of the board. Not doing so can lead to stability issues on certain boards if the clks exceed the levels in the dep tables. DPM already takes that into account, so for optimal performance, use DPM. Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_pm.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c index 87e1d69e8fdb..ac07ad1d4f8c 100644 --- a/drivers/gpu/drm/radeon/radeon_pm.c +++ b/drivers/gpu/drm/radeon/radeon_pm.c @@ -1002,7 +1002,7 @@ static void radeon_pm_resume_old(struct radeon_device *rdev) { /* set up the default clocks if the MC ucode is loaded */ if ((rdev->family >= CHIP_BARTS) && - (rdev->family <= CHIP_HAINAN) && + (rdev->family <= CHIP_CAYMAN) && rdev->mc_fw) { if (rdev->pm.default_vddc) radeon_atom_set_voltage(rdev, rdev->pm.default_vddc, @@ -1046,7 +1046,7 @@ static void radeon_pm_resume_dpm(struct radeon_device *rdev) if (ret) { DRM_ERROR("radeon: dpm resume failed\n"); if ((rdev->family >= CHIP_BARTS) && - (rdev->family <= CHIP_HAINAN) && + (rdev->family <= CHIP_CAYMAN) && rdev->mc_fw) { if (rdev->pm.default_vddc) radeon_atom_set_voltage(rdev, rdev->pm.default_vddc, @@ -1097,7 +1097,7 @@ static int radeon_pm_init_old(struct radeon_device *rdev) radeon_pm_init_profile(rdev); /* set up the default clocks if the MC ucode is loaded */ if ((rdev->family >= CHIP_BARTS) && - (rdev->family <= CHIP_HAINAN) && + (rdev->family <= CHIP_CAYMAN) && rdev->mc_fw) { if (rdev->pm.default_vddc) radeon_atom_set_voltage(rdev, rdev->pm.default_vddc, @@ -1183,7 +1183,7 @@ static int radeon_pm_init_dpm(struct radeon_device *rdev) if (ret) { rdev->pm.dpm_enabled = false; if ((rdev->family >= CHIP_BARTS) && - (rdev->family <= CHIP_HAINAN) && + (rdev->family <= CHIP_CAYMAN) && rdev->mc_fw) { if (rdev->pm.default_vddc) radeon_atom_set_voltage(rdev, rdev->pm.default_vddc, From b60ab990ccdf34b0159bf5ff52f4acee7c940d78 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Thu, 19 Sep 2013 18:49:11 -0400 Subject: [PATCH 115/523] dm thin: do not expose non-zero discard limits if discards disabled Fix issue where the block layer would stack the discard limits of the pool's data device even if the "ignore_discard" pool feature was specified. The pool and thin device(s) still had discards disabled because the QUEUE_FLAG_DISCARD request_queue flag wasn't set. But to avoid user confusion when "ignore_discard" is used: both the pool device and the thin device(s) have zeroes for all discard limits. Also, always set discard_zeroes_data_unsupported in targets because they should never advertise the 'discard_zeroes_data' capability (even if the pool's data device supports it). Signed-off-by: Mike Snitzer Acked-by: Joe Thornber --- drivers/md/dm-thin.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index ed063427d676..2c0cf511ec23 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -2095,6 +2095,7 @@ static int pool_ctr(struct dm_target *ti, unsigned argc, char **argv) * them down to the data device. The thin device's discard * processing will cause mappings to be removed from the btree. */ + ti->discard_zeroes_data_unsupported = true; if (pf.discard_enabled && pf.discard_passdown) { ti->num_discard_bios = 1; @@ -2104,7 +2105,6 @@ static int pool_ctr(struct dm_target *ti, unsigned argc, char **argv) * thin devices' discard limits consistent). */ ti->discards_supported = true; - ti->discard_zeroes_data_unsupported = true; } ti->private = pt; @@ -2689,8 +2689,16 @@ static void pool_io_hints(struct dm_target *ti, struct queue_limits *limits) * They get transferred to the live pool in bind_control_target() * called from pool_preresume(). */ - if (!pt->adjusted_pf.discard_enabled) + if (!pt->adjusted_pf.discard_enabled) { + /* + * Must explicitly disallow stacking discard limits otherwise the + * block layer will stack them if pool's data device has support. + * QUEUE_FLAG_DISCARD wouldn't be set but there is no way for the + * user to see that, so make sure to set all discard limits to 0. + */ + limits->discard_granularity = 0; return; + } disable_passdown_if_not_supported(pt); @@ -2826,10 +2834,10 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv) ti->per_bio_data_size = sizeof(struct dm_thin_endio_hook); /* In case the pool supports discards, pass them on. */ + ti->discard_zeroes_data_unsupported = true; if (tc->pool->pf.discard_enabled) { ti->discards_supported = true; ti->num_discard_bios = 1; - ti->discard_zeroes_data_unsupported = true; /* Discard bios must be split on a block boundary */ ti->split_discard_bios = true; } From 6cfa58573f9b4a543005baa002e137820504c7af Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Thu, 12 Sep 2013 18:06:11 -0400 Subject: [PATCH 116/523] dm: lower bio-based mempool reservation Bio-based device mapper processing doesn't need larger mempools (like request-based DM does), so lower the number of reserved entries for bio-based operation. 16 was already used for bio-based DM's bioset but mistakenly wasn't used for it's _io_cache. Formalize difference between bio-based and request-based defaults by introducing RESERVED_BIO_BASED_IOS and RESERVED_REQUEST_BASED_IOS. (based on older code from Mikulas Patocka) Signed-off-by: Mike Snitzer Signed-off-by: Frank Mayhar Acked-by: Mikulas Patocka --- drivers/md/dm.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 7b0ccdc5d65c..f2e5a50ee84e 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -211,7 +211,8 @@ struct dm_md_mempools { struct bio_set *bs; }; -#define MIN_IOS 256 +#define RESERVED_BIO_BASED_IOS 16 +#define RESERVED_REQUEST_BASED_IOS 256 static struct kmem_cache *_io_cache; static struct kmem_cache *_rq_tio_cache; @@ -2873,18 +2874,18 @@ struct dm_md_mempools *dm_alloc_md_mempools(unsigned type, unsigned integrity, u if (type == DM_TYPE_BIO_BASED) { cachep = _io_cache; - pool_size = 16; + pool_size = RESERVED_BIO_BASED_IOS; front_pad = roundup(per_bio_data_size, __alignof__(struct dm_target_io)) + offsetof(struct dm_target_io, clone); } else if (type == DM_TYPE_REQUEST_BASED) { cachep = _rq_tio_cache; - pool_size = MIN_IOS; + pool_size = RESERVED_REQUEST_BASED_IOS; front_pad = offsetof(struct dm_rq_clone_bio_info, clone); /* per_bio_data_size is not used. See __bind_mempools(). */ WARN_ON(per_bio_data_size != 0); } else goto out; - pools->io_pool = mempool_create_slab_pool(MIN_IOS, cachep); + pools->io_pool = mempool_create_slab_pool(pool_size, cachep); if (!pools->io_pool) goto out; From f47908269fb53d522a956b78612a0037f5faf8e7 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Thu, 12 Sep 2013 18:06:12 -0400 Subject: [PATCH 117/523] dm: add reserved_rq_based_ios module parameter Allow user to change the number of IOs that are reserved by request-based DM's mempools by writing to this file: /sys/module/dm_mod/parameters/reserved_rq_based_ios The default value is RESERVED_REQUEST_BASED_IOS (256). The maximum allowed value is RESERVED_MAX_IOS (1024). Export dm_get_reserved_rq_based_ios() for use by DM targets and core code. Switch to sizing dm-mpath's mempool using DM core's configurable 'reserved_rq_based_ios'. Signed-off-by: Mike Snitzer Signed-off-by: Frank Mayhar Acked-by: Mikulas Patocka --- drivers/md/dm-mpath.c | 6 +++--- drivers/md/dm.c | 38 +++++++++++++++++++++++++++++++++++++- drivers/md/dm.h | 2 ++ 3 files changed, 42 insertions(+), 4 deletions(-) diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index e08be94959fd..de570a558764 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -7,6 +7,7 @@ #include +#include "dm.h" #include "dm-path-selector.h" #include "dm-uevent.h" @@ -116,8 +117,6 @@ struct dm_mpath_io { typedef int (*action_fn) (struct pgpath *pgpath); -#define MIN_IOS 256 /* Mempool size */ - static struct kmem_cache *_mpio_cache; static struct workqueue_struct *kmultipathd, *kmpath_handlerd; @@ -190,6 +189,7 @@ static void free_priority_group(struct priority_group *pg, static struct multipath *alloc_multipath(struct dm_target *ti) { struct multipath *m; + unsigned min_ios = dm_get_reserved_rq_based_ios(); m = kzalloc(sizeof(*m), GFP_KERNEL); if (m) { @@ -202,7 +202,7 @@ static struct multipath *alloc_multipath(struct dm_target *ti) INIT_WORK(&m->trigger_event, trigger_event); init_waitqueue_head(&m->pg_init_wait); mutex_init(&m->work_mutex); - m->mpio_pool = mempool_create_slab_pool(MIN_IOS, _mpio_cache); + m->mpio_pool = mempool_create_slab_pool(min_ios, _mpio_cache); if (!m->mpio_pool) { kfree(m); return NULL; diff --git a/drivers/md/dm.c b/drivers/md/dm.c index f2e5a50ee84e..1e85f1da1ef3 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -213,9 +213,41 @@ struct dm_md_mempools { #define RESERVED_BIO_BASED_IOS 16 #define RESERVED_REQUEST_BASED_IOS 256 +#define RESERVED_MAX_IOS 1024 static struct kmem_cache *_io_cache; static struct kmem_cache *_rq_tio_cache; +/* + * Request-based DM's mempools' reserved IOs set by the user. + */ +static unsigned reserved_rq_based_ios = RESERVED_REQUEST_BASED_IOS; + +static unsigned __dm_get_reserved_ios(unsigned *reserved_ios, + unsigned def, unsigned max) +{ + unsigned ios = ACCESS_ONCE(*reserved_ios); + unsigned modified_ios = 0; + + if (!ios) + modified_ios = def; + else if (ios > max) + modified_ios = max; + + if (modified_ios) { + (void)cmpxchg(reserved_ios, ios, modified_ios); + ios = modified_ios; + } + + return ios; +} + +unsigned dm_get_reserved_rq_based_ios(void) +{ + return __dm_get_reserved_ios(&reserved_rq_based_ios, + RESERVED_REQUEST_BASED_IOS, RESERVED_MAX_IOS); +} +EXPORT_SYMBOL_GPL(dm_get_reserved_rq_based_ios); + static int __init local_init(void) { int r = -ENOMEM; @@ -2878,7 +2910,7 @@ struct dm_md_mempools *dm_alloc_md_mempools(unsigned type, unsigned integrity, u front_pad = roundup(per_bio_data_size, __alignof__(struct dm_target_io)) + offsetof(struct dm_target_io, clone); } else if (type == DM_TYPE_REQUEST_BASED) { cachep = _rq_tio_cache; - pool_size = RESERVED_REQUEST_BASED_IOS; + pool_size = dm_get_reserved_rq_based_ios(); front_pad = offsetof(struct dm_rq_clone_bio_info, clone); /* per_bio_data_size is not used. See __bind_mempools(). */ WARN_ON(per_bio_data_size != 0); @@ -2936,6 +2968,10 @@ module_exit(dm_exit); module_param(major, uint, 0); MODULE_PARM_DESC(major, "The major number of the device mapper"); + +module_param(reserved_rq_based_ios, uint, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(reserved_rq_based_ios, "Reserved IOs in request-based mempools"); + MODULE_DESCRIPTION(DM_NAME " driver"); MODULE_AUTHOR("Joe Thornber "); MODULE_LICENSE("GPL"); diff --git a/drivers/md/dm.h b/drivers/md/dm.h index 5e604cc7b4aa..15396501e0b3 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h @@ -184,6 +184,8 @@ void dm_free_md_mempools(struct dm_md_mempools *pools); /* * Helpers that are used by DM core */ +unsigned dm_get_reserved_rq_based_ios(void); + static inline bool dm_message_test_buffer_overflow(char *result, unsigned maxlen) { return !maxlen || strlen(result) + 1 >= maxlen; From e8603136cb04ec2d0c9b4b5be7a071fc003cb399 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Thu, 12 Sep 2013 18:06:12 -0400 Subject: [PATCH 118/523] dm: add reserved_bio_based_ios module parameter Allow user to change the number of IOs that are reserved by bio-based DM's mempools by writing to this file: /sys/module/dm_mod/parameters/reserved_bio_based_ios The default value is RESERVED_BIO_BASED_IOS (16). The maximum allowed value is RESERVED_MAX_IOS (1024). Export dm_get_reserved_bio_based_ios() for use by DM targets and core code. Switch to sizing dm-io's mempool and bioset using DM core's configurable 'reserved_bio_based_ios'. Signed-off-by: Mike Snitzer Signed-off-by: Frank Mayhar --- drivers/md/dm-io.c | 7 +++---- drivers/md/dm.c | 17 ++++++++++++++++- drivers/md/dm.h | 1 + 3 files changed, 20 insertions(+), 5 deletions(-) diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c index ea49834377c8..2a20986a2fec 100644 --- a/drivers/md/dm-io.c +++ b/drivers/md/dm-io.c @@ -19,8 +19,6 @@ #define DM_MSG_PREFIX "io" #define DM_IO_MAX_REGIONS BITS_PER_LONG -#define MIN_IOS 16 -#define MIN_BIOS 16 struct dm_io_client { mempool_t *pool; @@ -50,16 +48,17 @@ static struct kmem_cache *_dm_io_cache; struct dm_io_client *dm_io_client_create(void) { struct dm_io_client *client; + unsigned min_ios = dm_get_reserved_bio_based_ios(); client = kmalloc(sizeof(*client), GFP_KERNEL); if (!client) return ERR_PTR(-ENOMEM); - client->pool = mempool_create_slab_pool(MIN_IOS, _dm_io_cache); + client->pool = mempool_create_slab_pool(min_ios, _dm_io_cache); if (!client->pool) goto bad; - client->bios = bioset_create(MIN_BIOS, 0); + client->bios = bioset_create(min_ios, 0); if (!client->bios) goto bad; diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 1e85f1da1ef3..b3e26c7d1417 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -217,6 +217,11 @@ struct dm_md_mempools { static struct kmem_cache *_io_cache; static struct kmem_cache *_rq_tio_cache; +/* + * Bio-based DM's mempools' reserved IOs set by the user. + */ +static unsigned reserved_bio_based_ios = RESERVED_BIO_BASED_IOS; + /* * Request-based DM's mempools' reserved IOs set by the user. */ @@ -241,6 +246,13 @@ static unsigned __dm_get_reserved_ios(unsigned *reserved_ios, return ios; } +unsigned dm_get_reserved_bio_based_ios(void) +{ + return __dm_get_reserved_ios(&reserved_bio_based_ios, + RESERVED_BIO_BASED_IOS, RESERVED_MAX_IOS); +} +EXPORT_SYMBOL_GPL(dm_get_reserved_bio_based_ios); + unsigned dm_get_reserved_rq_based_ios(void) { return __dm_get_reserved_ios(&reserved_rq_based_ios, @@ -2906,7 +2918,7 @@ struct dm_md_mempools *dm_alloc_md_mempools(unsigned type, unsigned integrity, u if (type == DM_TYPE_BIO_BASED) { cachep = _io_cache; - pool_size = RESERVED_BIO_BASED_IOS; + pool_size = dm_get_reserved_bio_based_ios(); front_pad = roundup(per_bio_data_size, __alignof__(struct dm_target_io)) + offsetof(struct dm_target_io, clone); } else if (type == DM_TYPE_REQUEST_BASED) { cachep = _rq_tio_cache; @@ -2969,6 +2981,9 @@ module_exit(dm_exit); module_param(major, uint, 0); MODULE_PARM_DESC(major, "The major number of the device mapper"); +module_param(reserved_bio_based_ios, uint, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(reserved_bio_based_ios, "Reserved IOs in bio-based mempools"); + module_param(reserved_rq_based_ios, uint, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(reserved_rq_based_ios, "Reserved IOs in request-based mempools"); diff --git a/drivers/md/dm.h b/drivers/md/dm.h index 15396501e0b3..1d1ad7b7e527 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h @@ -184,6 +184,7 @@ void dm_free_md_mempools(struct dm_md_mempools *pools); /* * Helpers that are used by DM core */ +unsigned dm_get_reserved_bio_based_ios(void); unsigned dm_get_reserved_rq_based_ios(void); static inline bool dm_message_test_buffer_overflow(char *result, unsigned maxlen) From 4a1132a023eb48cf10522d84c5908d43b612c041 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 23 Sep 2013 10:38:26 -0400 Subject: [PATCH 119/523] drm/radeon: disable tests/benchmarks if accel is disabled The tests are only usable if the acceleration engines have been successfully initialized. Based on an initial patch from: Alex Ivanov Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_device.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index e29faa73b574..841d0e09be3e 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -1320,13 +1320,22 @@ int radeon_device_init(struct radeon_device *rdev, return r; } if ((radeon_testing & 1)) { - radeon_test_moves(rdev); + if (rdev->accel_working) + radeon_test_moves(rdev); + else + DRM_INFO("radeon: acceleration disabled, skipping move tests\n"); } if ((radeon_testing & 2)) { - radeon_test_syncing(rdev); + if (rdev->accel_working) + radeon_test_syncing(rdev); + else + DRM_INFO("radeon: acceleration disabled, skipping sync tests\n"); } if (radeon_benchmarking) { - radeon_benchmark(rdev, radeon_benchmarking); + if (rdev->accel_working) + radeon_benchmark(rdev, radeon_benchmarking); + else + DRM_INFO("radeon: acceleration disabled, skipping benchmarks\n"); } return 0; } From 4b40e5921230beb1951f04d2b1b92c4c88fbad43 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Mon, 23 Sep 2013 09:42:32 +0200 Subject: [PATCH 120/523] drm/radeon/uvd: lower msg&fb buffer requirements on UVD3 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Starting with UVD3 message and feedback buffers have their own 256MB segment, so no need to force them into VRAM any more. Signed-off-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/radeon_cs.c | 3 ++- drivers/gpu/drm/radeon/radeon_uvd.c | 3 +-- drivers/gpu/drm/radeon/uvd_v1_0.c | 4 ++-- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c index 80285e35bc65..66c222836631 100644 --- a/drivers/gpu/drm/radeon/radeon_cs.c +++ b/drivers/gpu/drm/radeon/radeon_cs.c @@ -85,8 +85,9 @@ static int radeon_cs_parser_relocs(struct radeon_cs_parser *p) VRAM, also but everything into VRAM on AGP cards to avoid image corruptions */ if (p->ring == R600_RING_TYPE_UVD_INDEX && + p->rdev->family < CHIP_PALM && (i == 0 || drm_pci_device_is_agp(p->rdev->ddev))) { - /* TODO: is this still needed for NI+ ? */ + p->relocs[i].lobj.domain = RADEON_GEM_DOMAIN_VRAM; diff --git a/drivers/gpu/drm/radeon/radeon_uvd.c b/drivers/gpu/drm/radeon/radeon_uvd.c index 1a01bbff9bfa..a0f11856ddde 100644 --- a/drivers/gpu/drm/radeon/radeon_uvd.c +++ b/drivers/gpu/drm/radeon/radeon_uvd.c @@ -476,8 +476,7 @@ static int radeon_uvd_cs_reloc(struct radeon_cs_parser *p, return -EINVAL; } - /* TODO: is this still necessary on NI+ ? */ - if ((cmd == 0 || cmd == 0x3) && + if (p->rdev->family < CHIP_PALM && (cmd == 0 || cmd == 0x3) && (start >> 28) != (p->rdev->uvd.gpu_addr >> 28)) { DRM_ERROR("msg/fb buffer %LX-%LX out of 256MB segment!\n", start, end); diff --git a/drivers/gpu/drm/radeon/uvd_v1_0.c b/drivers/gpu/drm/radeon/uvd_v1_0.c index 7266805d9786..3100fa9cb52f 100644 --- a/drivers/gpu/drm/radeon/uvd_v1_0.c +++ b/drivers/gpu/drm/radeon/uvd_v1_0.c @@ -212,8 +212,8 @@ int uvd_v1_0_start(struct radeon_device *rdev) /* enable VCPU clock */ WREG32(UVD_VCPU_CNTL, 1 << 9); - /* enable UMC */ - WREG32_P(UVD_LMI_CTRL2, 0, ~(1 << 8)); + /* enable UMC and NC0 */ + WREG32_P(UVD_LMI_CTRL2, 1 << 13, ~((1 << 8) | (1 << 13))); /* boot up the VCPU */ WREG32(UVD_SOFT_RESET, 0); From 8233729853b424778a6f383306159a8df669bdaf Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 23 Sep 2013 16:27:30 +0200 Subject: [PATCH 121/523] usb: gadget: pxa25x_udc: fix deferred probe from __init Move probe out of __init section and don't use platform_driver_probe which cannot be used with deferred probing. Since commit e9354576 ("gpiolib: Defer failed gpio requests by default") this driver might return -EPROBE_DEFER if a gpio_request fails. Cc: Eric Miao Cc: Russell King Cc: Haojian Zhuang Cc: Felipe Balbi Signed-off-by: Johan Hovold Signed-off-by: Felipe Balbi --- drivers/usb/gadget/pxa25x_udc.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c index cc9207473dbc..0ac6064aa3b8 100644 --- a/drivers/usb/gadget/pxa25x_udc.c +++ b/drivers/usb/gadget/pxa25x_udc.c @@ -2054,7 +2054,7 @@ static struct pxa25x_udc memory = { /* * probe - binds to the platform device */ -static int __init pxa25x_udc_probe(struct platform_device *pdev) +static int pxa25x_udc_probe(struct platform_device *pdev) { struct pxa25x_udc *dev = &memory; int retval, irq; @@ -2203,7 +2203,7 @@ static void pxa25x_udc_shutdown(struct platform_device *_dev) pullup_off(); } -static int __exit pxa25x_udc_remove(struct platform_device *pdev) +static int pxa25x_udc_remove(struct platform_device *pdev) { struct pxa25x_udc *dev = platform_get_drvdata(pdev); @@ -2294,7 +2294,8 @@ static int pxa25x_udc_resume(struct platform_device *dev) static struct platform_driver udc_driver = { .shutdown = pxa25x_udc_shutdown, - .remove = __exit_p(pxa25x_udc_remove), + .probe = pxa25x_udc_probe, + .remove = pxa25x_udc_remove, .suspend = pxa25x_udc_suspend, .resume = pxa25x_udc_resume, .driver = { @@ -2303,7 +2304,7 @@ static struct platform_driver udc_driver = { }, }; -module_platform_driver_probe(udc_driver, pxa25x_udc_probe); +module_platform_driver(udc_driver); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_AUTHOR("Frank Becker, Robert Schwebel, David Brownell"); From eaaa775b5f934f09b1f6ee91418ed97a8fdf0b7c Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 23 Sep 2013 16:27:31 +0200 Subject: [PATCH 122/523] usb: phy: gpio-vbus: fix deferred probe from __init Move probe out of __init section and don't use platform_driver_probe which cannot be used with deferred probing. Since commit e9354576 ("gpiolib: Defer failed gpio requests by default") and 04bf3011 ("regulator: Support driver probe deferral") this driver might return -EPROBE_DEFER if a gpio_request or regulator_get fails. Cc: Felipe Balbi Signed-off-by: Johan Hovold Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-gpio-vbus-usb.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/usb/phy/phy-gpio-vbus-usb.c b/drivers/usb/phy/phy-gpio-vbus-usb.c index b2f29c9aebbf..02799a5efcd4 100644 --- a/drivers/usb/phy/phy-gpio-vbus-usb.c +++ b/drivers/usb/phy/phy-gpio-vbus-usb.c @@ -241,7 +241,7 @@ static int gpio_vbus_set_suspend(struct usb_phy *phy, int suspend) /* platform driver interface */ -static int __init gpio_vbus_probe(struct platform_device *pdev) +static int gpio_vbus_probe(struct platform_device *pdev) { struct gpio_vbus_mach_info *pdata = dev_get_platdata(&pdev->dev); struct gpio_vbus_data *gpio_vbus; @@ -349,7 +349,7 @@ err_gpio: return err; } -static int __exit gpio_vbus_remove(struct platform_device *pdev) +static int gpio_vbus_remove(struct platform_device *pdev) { struct gpio_vbus_data *gpio_vbus = platform_get_drvdata(pdev); struct gpio_vbus_mach_info *pdata = dev_get_platdata(&pdev->dev); @@ -398,8 +398,6 @@ static const struct dev_pm_ops gpio_vbus_dev_pm_ops = { }; #endif -/* NOTE: the gpio-vbus device may *NOT* be hotplugged */ - MODULE_ALIAS("platform:gpio-vbus"); static struct platform_driver gpio_vbus_driver = { @@ -410,10 +408,11 @@ static struct platform_driver gpio_vbus_driver = { .pm = &gpio_vbus_dev_pm_ops, #endif }, - .remove = __exit_p(gpio_vbus_remove), + .probe = gpio_vbus_probe, + .remove = gpio_vbus_remove, }; -module_platform_driver_probe(gpio_vbus_driver, gpio_vbus_probe); +module_platform_driver(gpio_vbus_driver); MODULE_DESCRIPTION("simple GPIO controlled OTG transceiver driver"); MODULE_AUTHOR("Philipp Zabel"); From 4c868664344d0022699353ff324bf9eb39643265 Mon Sep 17 00:00:00 2001 From: Eilon Greenstein Date: Mon, 23 Sep 2013 10:12:50 +0300 Subject: [PATCH 123/523] bnx2x: Prevent mistaken hangup between driver & FW When system CPU is stressed it's possible that the driver will not be able to pulse the FW every second, which will cause the log to be filled with error messages. Increasing the threshold to 5 seconds seems to be enough to eliminate the issue. Signed-off-by: Eilon Greenstein Signed-off-by: Yuval Mintz Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index a6704b555042..f403c6be51de 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -5447,26 +5447,24 @@ static void bnx2x_timer(unsigned long data) if (IS_PF(bp) && !BP_NOMCP(bp)) { int mb_idx = BP_FW_MB_IDX(bp); - u32 drv_pulse; - u32 mcp_pulse; + u16 drv_pulse; + u16 mcp_pulse; ++bp->fw_drv_pulse_wr_seq; bp->fw_drv_pulse_wr_seq &= DRV_PULSE_SEQ_MASK; - /* TBD - add SYSTEM_TIME */ drv_pulse = bp->fw_drv_pulse_wr_seq; bnx2x_drv_pulse(bp); mcp_pulse = (SHMEM_RD(bp, func_mb[mb_idx].mcp_pulse_mb) & MCP_PULSE_SEQ_MASK); /* The delta between driver pulse and mcp response - * should be 1 (before mcp response) or 0 (after mcp response) + * should not get too big. If the MFW is more than 5 pulses + * behind, we should worry about it enough to generate an error + * log. */ - if ((drv_pulse != mcp_pulse) && - (drv_pulse != ((mcp_pulse + 1) & MCP_PULSE_SEQ_MASK))) { - /* someone lost a heartbeat... */ - BNX2X_ERR("drv_pulse (0x%x) != mcp_pulse (0x%x)\n", + if (((drv_pulse - mcp_pulse) & MCP_PULSE_SEQ_MASK) > 5) + BNX2X_ERR("MFW seems hanged: drv_pulse (0x%x) != mcp_pulse (0x%x)\n", drv_pulse, mcp_pulse); - } } if (bp->state == BNX2X_STATE_OPEN) From 9ea75ded3f5c6d3e3041d4495f36d95da0016da8 Mon Sep 17 00:00:00 2001 From: Ariel Elior Date: Mon, 23 Sep 2013 10:12:51 +0300 Subject: [PATCH 124/523] bnx2x: Fix support for VFs on some PFs Due to incorrect usage of PF macros when reading information relating to interrupts, some PFs were erroneously unable to support VFs. Signed-off-by: Ariel Elior Signed-off-by: Yuval Mintz Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c index 2604b6204abe..d9370d44559e 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c @@ -1819,7 +1819,7 @@ bnx2x_get_vf_igu_cam_info(struct bnx2x *bp) fid = GET_FIELD((val), IGU_REG_MAPPING_MEMORY_FID); if (fid & IGU_FID_ENCODE_IS_PF) current_pf = fid & IGU_FID_PF_NUM_MASK; - else if (current_pf == BP_ABS_FUNC(bp)) + else if (current_pf == BP_FUNC(bp)) bnx2x_vf_set_igu_info(bp, sb_id, (fid & IGU_FID_VF_NUM_MASK)); DP(BNX2X_MSG_IOV, "%s[%d], igu_sb_id=%d, msix=%d\n", From 717fa2b9012c980f5578bb406d21efe5c2ea3ed7 Mon Sep 17 00:00:00 2001 From: Ariel Elior Date: Mon, 23 Sep 2013 10:12:52 +0300 Subject: [PATCH 125/523] bnx2x: add missing VF resource allocation during init bnx2x_iov_static_resc() should be called after IGU was read for information on the number of available VFs, so that resources will be correctly set. Signed-off-by: Ariel Elior Signed-off-by: Yuval Mintz Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c index d9370d44559e..9ad012bdd915 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c @@ -3180,6 +3180,7 @@ int bnx2x_enable_sriov(struct bnx2x *bp) /* set local queue arrays */ vf->vfqs = &bp->vfdb->vfqs[qcount]; qcount += vf_sb_count(vf); + bnx2x_iov_static_resc(bp, vf); } /* prepare msix vectors in VF configuration space */ @@ -3187,6 +3188,8 @@ int bnx2x_enable_sriov(struct bnx2x *bp) bnx2x_pretend_func(bp, HW_VF_HANDLE(bp, vf_idx)); REG_WR(bp, PCICFG_OFFSET + GRC_CONFIG_REG_VF_MSIX_CONTROL, num_vf_queues); + DP(BNX2X_MSG_IOV, "set msix vec num in VF %d cfg space to %d\n", + vf_idx, num_vf_queues); } bnx2x_pretend_func(bp, BP_ABS_FUNC(bp)); From d9d81862671a7d139a7944090a7fe4647fc8f8d8 Mon Sep 17 00:00:00 2001 From: Yuval Mintz Date: Mon, 23 Sep 2013 10:12:53 +0300 Subject: [PATCH 126/523] bnx2x: prevent masking error from cnic During error flows while loading cnic the return value was incorrectly replaced by that of bnx2x_set_real_num_queues(); If that function was to finish successfully then the cnic would have mistakenly thought the load ended successfully, causing issues (& panics) later on. Signed-off-by: Yuval Mintz Signed-off-by: Ariel Elior Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c index 61726af1de6e..e66beff2704d 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c @@ -2481,8 +2481,7 @@ load_error_cnic2: load_error_cnic1: bnx2x_napi_disable_cnic(bp); /* Update the number of queues without the cnic queues */ - rc = bnx2x_set_real_num_queues(bp, 0); - if (rc) + if (bnx2x_set_real_num_queues(bp, 0)) BNX2X_ERR("Unable to set real_num_queues not including cnic\n"); load_error_cnic0: BNX2X_ERR("CNIC-related load failed\n"); From 0a5ccb759dc6cf17591e8b77d1fe0b52c2cf706d Mon Sep 17 00:00:00 2001 From: Yuval Mintz Date: Mon, 23 Sep 2013 10:12:54 +0300 Subject: [PATCH 127/523] bnx2x: prevent masked MCP parities from appearing During flows which mask block attentions (e.g., register dump) all parities are masked. However, unlike other blocks the MCP's attention is not masked inside the block but rather the indication to the driver. If another attention (e.g., link change) will occour while there's an MCP parity, the driver will ignore the fact that the parity is masked and erroneously report a parity. This patch forces the driver to read the MCP masking while checking for parities. Signed-off-by: Yuval Mintz Signed-off-by: Ariel Elior Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index f403c6be51de..82b658d8c04c 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -4703,6 +4703,14 @@ bool bnx2x_chk_parity_attn(struct bnx2x *bp, bool *global, bool print) attn.sig[3] = REG_RD(bp, MISC_REG_AEU_AFTER_INVERT_4_FUNC_0 + port*4); + /* Since MCP attentions can't be disabled inside the block, we need to + * read AEU registers to see whether they're currently disabled + */ + attn.sig[3] &= ((REG_RD(bp, + !port ? MISC_REG_AEU_ENABLE4_FUNC_0_OUT_0 + : MISC_REG_AEU_ENABLE4_FUNC_1_OUT_0) & + MISC_AEU_ENABLE_MCP_PRTY_BITS) | + ~MISC_AEU_ENABLE_MCP_PRTY_BITS); if (!CHIP_IS_E1x(bp)) attn.sig[4] = REG_RD(bp, From cbbf77de646664774cec8726681a991565a6bac5 Mon Sep 17 00:00:00 2001 From: Ariel Elior Date: Mon, 23 Sep 2013 10:12:55 +0300 Subject: [PATCH 128/523] bnx2x: handle known but unsupported VF messages Commit b9871bcf "bnx2x: VF RSS support - PF side" has deprecated one of the previous existing messages. If an old VF driver were to send this message to the PF then the PF will not reply and leave the mailbox in an unsteady state (and cause a timeout on the VF side). Wait until firmware ack is written before unlocking channel Signed-off-by: Ariel Elior Signed-off-by: Yuval Mintz Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- .../net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c | 50 +++++++++---------- 1 file changed, 24 insertions(+), 26 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c index 6cfb88732452..da16953eb2ec 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c @@ -1765,28 +1765,28 @@ static void bnx2x_vf_mbx_request(struct bnx2x *bp, struct bnx2x_virtf *vf, switch (mbx->first_tlv.tl.type) { case CHANNEL_TLV_ACQUIRE: bnx2x_vf_mbx_acquire(bp, vf, mbx); - break; + return; case CHANNEL_TLV_INIT: bnx2x_vf_mbx_init_vf(bp, vf, mbx); - break; + return; case CHANNEL_TLV_SETUP_Q: bnx2x_vf_mbx_setup_q(bp, vf, mbx); - break; + return; case CHANNEL_TLV_SET_Q_FILTERS: bnx2x_vf_mbx_set_q_filters(bp, vf, mbx); - break; + return; case CHANNEL_TLV_TEARDOWN_Q: bnx2x_vf_mbx_teardown_q(bp, vf, mbx); - break; + return; case CHANNEL_TLV_CLOSE: bnx2x_vf_mbx_close_vf(bp, vf, mbx); - break; + return; case CHANNEL_TLV_RELEASE: bnx2x_vf_mbx_release_vf(bp, vf, mbx); - break; + return; case CHANNEL_TLV_UPDATE_RSS: bnx2x_vf_mbx_update_rss(bp, vf, mbx); - break; + return; } } else { @@ -1802,26 +1802,24 @@ static void bnx2x_vf_mbx_request(struct bnx2x *bp, struct bnx2x_virtf *vf, for (i = 0; i < 20; i++) DP_CONT(BNX2X_MSG_IOV, "%x ", mbx->msg->req.tlv_buf_size.tlv_buffer[i]); + } - /* test whether we can respond to the VF (do we have an address - * for it?) + /* can we respond to VF (do we have an address for it?) */ + if (vf->state == VF_ACQUIRED || vf->state == VF_ENABLED) { + /* mbx_resp uses the op_rc of the VF */ + vf->op_rc = PFVF_STATUS_NOT_SUPPORTED; + + /* notify the VF that we do not support this request */ + bnx2x_vf_mbx_resp(bp, vf); + } else { + /* can't send a response since this VF is unknown to us + * just ack the FW to release the mailbox and unlock + * the channel. */ - if (vf->state == VF_ACQUIRED || vf->state == VF_ENABLED) { - /* mbx_resp uses the op_rc of the VF */ - vf->op_rc = PFVF_STATUS_NOT_SUPPORTED; - - /* notify the VF that we do not support this request */ - bnx2x_vf_mbx_resp(bp, vf); - } else { - /* can't send a response since this VF is unknown to us - * just ack the FW to release the mailbox and unlock - * the channel. - */ - storm_memset_vf_mbx_ack(bp, vf->abs_vfid); - mmiowb(); - bnx2x_unlock_vf_pf_channel(bp, vf, - mbx->first_tlv.tl.type); - } + storm_memset_vf_mbx_ack(bp, vf->abs_vfid); + /* Firmware ack should be written before unlocking channel */ + mmiowb(); + bnx2x_unlock_vf_pf_channel(bp, vf, mbx->first_tlv.tl.type); } } From 5bcecf325378218a8e248bb6bcae96ec7362f8ef Mon Sep 17 00:00:00 2001 From: Ken O'Brien Date: Sat, 21 Sep 2013 19:14:43 +0100 Subject: [PATCH 129/523] Bluetooth: btusb: Add support for Belkin F8065bf Add generic rule on encountering Belkin bluetooth usb device F8065bf. Relevant section from /sys/kernel/debug/usb/devices: T: Bus=03 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=050d ProdID=065a Rev= 1.12 S: Manufacturer=Broadcom Corp S: Product=BCM20702A0 S: SerialNumber=0002723E2D29 C:* #Ifs= 4 Cfg#= 1 Atr=a0 MxPwr=100mA I:* If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms I: If#= 1 Alt= 1 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms Signed-off-by: Ken O'Brien Signed-off-by: Gustavo Padovan --- drivers/bluetooth/btusb.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 3221a55dddad..f3dfc0a88fdc 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -113,6 +113,9 @@ static struct usb_device_id btusb_table[] = { /*Broadcom devices with vendor specific id */ { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) }, + /* Belkin F8065bf - Broadcom based */ + { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) }, + { } /* Terminating entry */ }; From a224bd36bf5ccc72d0f12ab11216706762133177 Mon Sep 17 00:00:00 2001 From: "josselin.costanzi@mobile-devices.fr" Date: Wed, 18 Sep 2013 12:00:35 +0200 Subject: [PATCH 130/523] net/lapb: re-send packets on timeout Actually re-send packets when the T1 timer runs out. This fixes a bug where packets are waiting on the write queue until disconnection when no other traffic is outstanding. Signed-off-by: Josselin Costanzi Signed-off-by: Maxime Jayat Signed-off-by: David S. Miller --- net/lapb/lapb_timer.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/lapb/lapb_timer.c b/net/lapb/lapb_timer.c index 54563ad8aeb1..355cc3b6fa4d 100644 --- a/net/lapb/lapb_timer.c +++ b/net/lapb/lapb_timer.c @@ -154,6 +154,7 @@ static void lapb_t1timer_expiry(unsigned long param) } else { lapb->n2count++; lapb_requeue_frames(lapb); + lapb_kick(lapb); } break; From 9fe34f5d920b183ec063550e0f4ec854aa373316 Mon Sep 17 00:00:00 2001 From: Noel Burton-Krahn Date: Wed, 18 Sep 2013 12:24:40 -0700 Subject: [PATCH 131/523] mrp: add periodictimer to allow retries when packets get lost MRP doesn't implement the periodictimer in 802.1Q, so it never retries if packets get lost. I ran into this problem when MRP sent a MVRP JoinIn before the interface was fully up. The JoinIn was lost, MRP didn't retry, and MVRP registration failed. Tested against Juniper QFabric switches Signed-off-by: Noel Burton-Krahn Acked-by: David Ward Signed-off-by: David S. Miller --- include/net/mrp.h | 1 + net/802/mrp.c | 27 +++++++++++++++++++++++++++ 2 files changed, 28 insertions(+) diff --git a/include/net/mrp.h b/include/net/mrp.h index 4fbf02aa2ec1..0f7558b638ae 100644 --- a/include/net/mrp.h +++ b/include/net/mrp.h @@ -112,6 +112,7 @@ struct mrp_applicant { struct mrp_application *app; struct net_device *dev; struct timer_list join_timer; + struct timer_list periodic_timer; spinlock_t lock; struct sk_buff_head queue; diff --git a/net/802/mrp.c b/net/802/mrp.c index 1eb05d80b07b..3ed616215870 100644 --- a/net/802/mrp.c +++ b/net/802/mrp.c @@ -24,6 +24,11 @@ static unsigned int mrp_join_time __read_mostly = 200; module_param(mrp_join_time, uint, 0644); MODULE_PARM_DESC(mrp_join_time, "Join time in ms (default 200ms)"); + +static unsigned int mrp_periodic_time __read_mostly = 1000; +module_param(mrp_periodic_time, uint, 0644); +MODULE_PARM_DESC(mrp_periodic_time, "Periodic time in ms (default 1s)"); + MODULE_LICENSE("GPL"); static const u8 @@ -595,6 +600,24 @@ static void mrp_join_timer(unsigned long data) mrp_join_timer_arm(app); } +static void mrp_periodic_timer_arm(struct mrp_applicant *app) +{ + mod_timer(&app->periodic_timer, + jiffies + msecs_to_jiffies(mrp_periodic_time)); +} + +static void mrp_periodic_timer(unsigned long data) +{ + struct mrp_applicant *app = (struct mrp_applicant *)data; + + spin_lock(&app->lock); + mrp_mad_event(app, MRP_EVENT_PERIODIC); + mrp_pdu_queue(app); + spin_unlock(&app->lock); + + mrp_periodic_timer_arm(app); +} + static int mrp_pdu_parse_end_mark(struct sk_buff *skb, int *offset) { __be16 endmark; @@ -845,6 +868,9 @@ int mrp_init_applicant(struct net_device *dev, struct mrp_application *appl) rcu_assign_pointer(dev->mrp_port->applicants[appl->type], app); setup_timer(&app->join_timer, mrp_join_timer, (unsigned long)app); mrp_join_timer_arm(app); + setup_timer(&app->periodic_timer, mrp_periodic_timer, + (unsigned long)app); + mrp_periodic_timer_arm(app); return 0; err3: @@ -870,6 +896,7 @@ void mrp_uninit_applicant(struct net_device *dev, struct mrp_application *appl) * all pending messages before the applicant is gone. */ del_timer_sync(&app->join_timer); + del_timer_sync(&app->periodic_timer); spin_lock_bh(&app->lock); mrp_mad_event(app, MRP_EVENT_TX); From 284d20552461466b04d6bfeafeb1c47a8891b591 Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Thu, 5 Sep 2013 11:01:20 +0300 Subject: [PATCH 132/523] xhci: Fix oops happening after address device timeout When a command times out, the command ring is first aborted, and then stopped. If the command ring is empty when it is stopped the stop event will point to next command which is not yet set. xHCI tries to handle this next event often causing an oops. Don't handle command completion events on stopped cmd ring if ring is empty. This patch should be backported to kernels as old as 3.7, that contain the commit b92cc66c047ff7cf587b318fe377061a353c120f "xHCI: add aborting command ring function" Signed-off-by: Mathias Nyman Reported-by: Giovanni Signed-off-by: Sarah Sharp Cc: stable@vger.kernel.org --- drivers/usb/host/xhci-ring.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 411da1fc7ae8..aaa2906f7b78 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1414,6 +1414,12 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, inc_deq(xhci, xhci->cmd_ring); return; } + /* There is no command to handle if we get a stop event when the + * command ring is empty, event->cmd_trb points to the next + * unset command + */ + if (xhci->cmd_ring->dequeue == xhci->cmd_ring->enqueue) + return; } switch (le32_to_cpu(xhci->cmd_ring->dequeue->generic.field[3]) From ec7e43e2d98173483866fe2e4e690143626b659c Mon Sep 17 00:00:00 2001 From: Mathias Nyman Date: Fri, 30 Aug 2013 18:25:49 +0300 Subject: [PATCH 133/523] xhci: Ensure a command structure points to the correct trb on the command ring If a command on the command ring needs to be cancelled before it is handled it can be turned to a no-op operation when the ring is stopped. We want to store the command ring enqueue pointer in the command structure when the command in enqueued for the cancellation case. Some commands used to store the command ring dequeue pointers instead of enqueue (these often worked because enqueue happends to equal dequeue quite often) Other commands correctly used the enqueue pointer but did not check if it pointed to a valid trb or a link trb, this caused for example stop endpoint command to timeout in xhci_stop_device() in about 2% of suspend/resume cases. This should also solve some weird behavior happening in command cancellation cases. This patch is based on a patch submitted by Sarah Sharp to linux-usb, but then forgotten: http://marc.info/?l=linux-usb&m=136269803207465&w=2 This patch should be backported to kernels as old as 3.7, that contain the commit b92cc66c047ff7cf587b318fe377061a353c120f "xHCI: add aborting command ring function" Signed-off-by: Mathias Nyman Signed-off-by: Sarah Sharp Cc: stable@vger.kernel.org --- drivers/usb/host/xhci-hub.c | 2 +- drivers/usb/host/xhci-ring.c | 10 ++++++++++ drivers/usb/host/xhci.c | 25 +++++-------------------- drivers/usb/host/xhci.h | 1 + 4 files changed, 17 insertions(+), 21 deletions(-) diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index fae697ed0b70..ccf0a06199a3 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -287,7 +287,7 @@ static int xhci_stop_device(struct xhci_hcd *xhci, int slot_id, int suspend) if (virt_dev->eps[i].ring && virt_dev->eps[i].ring->dequeue) xhci_queue_stop_endpoint(xhci, slot_id, i, suspend); } - cmd->command_trb = xhci->cmd_ring->enqueue; + cmd->command_trb = xhci_find_next_enqueue(xhci->cmd_ring); list_add_tail(&cmd->cmd_list, &virt_dev->cmd_list); xhci_queue_stop_endpoint(xhci, slot_id, 0, suspend); xhci_ring_cmd_db(xhci); diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index aaa2906f7b78..9ac9672d4498 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -123,6 +123,16 @@ static int enqueue_is_link_trb(struct xhci_ring *ring) return TRB_TYPE_LINK_LE32(link->control); } +union xhci_trb *xhci_find_next_enqueue(struct xhci_ring *ring) +{ + /* Enqueue pointer can be left pointing to the link TRB, + * we must handle that + */ + if (TRB_TYPE_LINK_LE32(ring->enqueue->link.control)) + return ring->enq_seg->next->trbs; + return ring->enqueue; +} + /* Updates trb to point to the next TRB in the ring, and updates seg if the next * TRB is in a new segment. This does not skip over link TRBs, and it does not * effect the ring dequeue or enqueue pointers. diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 49b6edb84a79..1e36dbb48366 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -2598,15 +2598,7 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci, if (command) { cmd_completion = command->completion; cmd_status = &command->status; - command->command_trb = xhci->cmd_ring->enqueue; - - /* Enqueue pointer can be left pointing to the link TRB, - * we must handle that - */ - if (TRB_TYPE_LINK_LE32(command->command_trb->link.control)) - command->command_trb = - xhci->cmd_ring->enq_seg->next->trbs; - + command->command_trb = xhci_find_next_enqueue(xhci->cmd_ring); list_add_tail(&command->cmd_list, &virt_dev->cmd_list); } else { cmd_completion = &virt_dev->cmd_completion; @@ -2614,7 +2606,7 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci, } init_completion(cmd_completion); - cmd_trb = xhci->cmd_ring->dequeue; + cmd_trb = xhci_find_next_enqueue(xhci->cmd_ring); if (!ctx_change) ret = xhci_queue_configure_endpoint(xhci, in_ctx->dma, udev->slot_id, must_succeed); @@ -3439,14 +3431,7 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev) /* Attempt to submit the Reset Device command to the command ring */ spin_lock_irqsave(&xhci->lock, flags); - reset_device_cmd->command_trb = xhci->cmd_ring->enqueue; - - /* Enqueue pointer can be left pointing to the link TRB, - * we must handle that - */ - if (TRB_TYPE_LINK_LE32(reset_device_cmd->command_trb->link.control)) - reset_device_cmd->command_trb = - xhci->cmd_ring->enq_seg->next->trbs; + reset_device_cmd->command_trb = xhci_find_next_enqueue(xhci->cmd_ring); list_add_tail(&reset_device_cmd->cmd_list, &virt_dev->cmd_list); ret = xhci_queue_reset_device(xhci, slot_id); @@ -3650,7 +3635,7 @@ int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev) union xhci_trb *cmd_trb; spin_lock_irqsave(&xhci->lock, flags); - cmd_trb = xhci->cmd_ring->dequeue; + cmd_trb = xhci_find_next_enqueue(xhci->cmd_ring); ret = xhci_queue_slot_control(xhci, TRB_ENABLE_SLOT, 0); if (ret) { spin_unlock_irqrestore(&xhci->lock, flags); @@ -3785,7 +3770,7 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) slot_ctx->dev_info >> 27); spin_lock_irqsave(&xhci->lock, flags); - cmd_trb = xhci->cmd_ring->dequeue; + cmd_trb = xhci_find_next_enqueue(xhci->cmd_ring); ret = xhci_queue_address_device(xhci, virt_dev->in_ctx->dma, udev->slot_id); if (ret) { diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 46aa14894148..f3e10206cd95 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1840,6 +1840,7 @@ int xhci_cancel_cmd(struct xhci_hcd *xhci, struct xhci_command *command, union xhci_trb *cmd_trb); void xhci_ring_ep_doorbell(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, unsigned int stream_id); +union xhci_trb *xhci_find_next_enqueue(struct xhci_ring *ring); /* xHCI roothub code */ void xhci_set_link_state(struct xhci_hcd *xhci, __le32 __iomem **port_array, From 8b3d45705e54075cfb9d4212dbca9ea82c85c4b8 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Tue, 20 Aug 2013 08:12:12 -0700 Subject: [PATCH 134/523] usb: Fix xHCI host issues on remote wakeup. When a device signals remote wakeup on a roothub, and the suspend change bit is set, the host controller driver must not give control back to the USB core until the port goes back into the active state. EHCI accomplishes this by waiting in the get port status function until the PORT_RESUME bit is cleared: /* stop resume signaling */ temp &= ~(PORT_RWC_BITS | PORT_SUSPEND | PORT_RESUME); ehci_writel(ehci, temp, status_reg); clear_bit(wIndex, &ehci->resuming_ports); retval = ehci_handshake(ehci, status_reg, PORT_RESUME, 0, 2000 /* 2msec */); Similarly, the xHCI host should wait until the port goes into U0, before passing control up to the USB core. When the port transitions from the RExit state to U0, the xHCI driver will get a port status change event. We need to wait for that event before passing control up to the USB core. After the port transitions to the active state, the USB core should time a recovery interval before it talks to the device. The length of that recovery interval is TRSMRCY, 10 ms, mentioned in the USB 2.0 spec, section 7.1.7.7. The previous xHCI code (which did not wait for the port to go into U0) would cause the USB core to violate that recovery interval. This bug caused numerous USB device disconnects on remote wakeup under ChromeOS and a Lynx Point LP xHCI host that takes up to 20 ms to move from RExit to U0. ChromeOS is very aggressive about power savings, and sets the autosuspend_delay to 100 ms, and disables USB persist. I attempted to replicate this bug with Ubuntu 12.04, but could not. I used Ubuntu 12.04 on the same platform, with the same BIOS that the bug was triggered on ChromeOS with. I also changed the USB sysfs settings as described above, but still could not reproduce the bug under Ubuntu. It may be that ChromeOS userspace triggers this bug through additional settings. Signed-off-by: Sarah Sharp --- drivers/usb/host/xhci-hub.c | 45 ++++++++++++++++++++++++++++-------- drivers/usb/host/xhci-mem.c | 2 ++ drivers/usb/host/xhci-ring.c | 13 +++++++++++ drivers/usb/host/xhci.h | 10 ++++++++ 4 files changed, 60 insertions(+), 10 deletions(-) diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index ccf0a06199a3..773a6b28c4f1 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -552,11 +552,15 @@ void xhci_del_comp_mod_timer(struct xhci_hcd *xhci, u32 status, u16 wIndex) * - Mark a port as being done with device resume, * and ring the endpoint doorbells. * - Stop the Synopsys redriver Compliance Mode polling. + * - Drop and reacquire the xHCI lock, in order to wait for port resume. */ static u32 xhci_get_port_status(struct usb_hcd *hcd, struct xhci_bus_state *bus_state, __le32 __iomem **port_array, - u16 wIndex, u32 raw_port_status) + u16 wIndex, u32 raw_port_status, + unsigned long flags) + __releases(&xhci->lock) + __acquires(&xhci->lock) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); u32 status = 0; @@ -591,21 +595,42 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd, return 0xffffffff; if (time_after_eq(jiffies, bus_state->resume_done[wIndex])) { + int time_left; + xhci_dbg(xhci, "Resume USB2 port %d\n", wIndex + 1); bus_state->resume_done[wIndex] = 0; clear_bit(wIndex, &bus_state->resuming_ports); + + set_bit(wIndex, &bus_state->rexit_ports); xhci_set_link_state(xhci, port_array, wIndex, XDEV_U0); - xhci_dbg(xhci, "set port %d resume\n", - wIndex + 1); - slot_id = xhci_find_slot_id_by_port(hcd, xhci, - wIndex + 1); - if (!slot_id) { - xhci_dbg(xhci, "slot_id is zero\n"); - return 0xffffffff; + + spin_unlock_irqrestore(&xhci->lock, flags); + time_left = wait_for_completion_timeout( + &bus_state->rexit_done[wIndex], + msecs_to_jiffies( + XHCI_MAX_REXIT_TIMEOUT)); + spin_lock_irqsave(&xhci->lock, flags); + + if (time_left) { + slot_id = xhci_find_slot_id_by_port(hcd, + xhci, wIndex + 1); + if (!slot_id) { + xhci_dbg(xhci, "slot_id is zero\n"); + return 0xffffffff; + } + xhci_ring_device(xhci, slot_id); + } else { + int port_status = xhci_readl(xhci, + port_array[wIndex]); + xhci_warn(xhci, "Port resume took longer than %i msec, port status = 0x%x\n", + XHCI_MAX_REXIT_TIMEOUT, + port_status); + status |= USB_PORT_STAT_SUSPEND; + clear_bit(wIndex, &bus_state->rexit_ports); } - xhci_ring_device(xhci, slot_id); + bus_state->port_c_suspend |= 1 << wIndex; bus_state->suspended_ports &= ~(1 << wIndex); } else { @@ -728,7 +753,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, break; } status = xhci_get_port_status(hcd, bus_state, port_array, - wIndex, temp); + wIndex, temp, flags); if (status == 0xffffffff) goto error; diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 53b972c2a09f..83bcd13622c3 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -2428,6 +2428,8 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) for (i = 0; i < USB_MAXCHILDREN; ++i) { xhci->bus_state[0].resume_done[i] = 0; xhci->bus_state[1].resume_done[i] = 0; + /* Only the USB 2.0 completions will ever be used. */ + init_completion(&xhci->bus_state[1].rexit_done[i]); } if (scratchpad_alloc(xhci, flags)) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 9ac9672d4498..dd02402700d5 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1759,6 +1759,19 @@ static void handle_port_status(struct xhci_hcd *xhci, } } + /* + * Check to see if xhci-hub.c is waiting on RExit to U0 transition (or + * RExit to a disconnect state). If so, let the the driver know it's + * out of the RExit state. + */ + if (!DEV_SUPERSPEED(temp) && + test_and_clear_bit(faked_port_index, + &bus_state->rexit_ports)) { + complete(&bus_state->rexit_done[faked_port_index]); + bogus_port_status = true; + goto cleanup; + } + if (hcd->speed != HCD_USB3) xhci_test_and_clear_bit(xhci, port_array, faked_port_index, PORT_PLC); diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index f3e10206cd95..289fbfbae746 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1412,8 +1412,18 @@ struct xhci_bus_state { unsigned long resume_done[USB_MAXCHILDREN]; /* which ports have started to resume */ unsigned long resuming_ports; + /* Which ports are waiting on RExit to U0 transition. */ + unsigned long rexit_ports; + struct completion rexit_done[USB_MAXCHILDREN]; }; + +/* + * It can take up to 20 ms to transition from RExit to U0 on the + * Intel Lynx Point LP xHCI host. + */ +#define XHCI_MAX_REXIT_TIMEOUT (20 * 1000) + static inline unsigned int hcd_index(struct usb_hcd *hcd) { if (hcd->speed == HCD_USB3) From 526867c3ca0caa2e3e846cb993b0f961c33c2abb Mon Sep 17 00:00:00 2001 From: Florian Wolter Date: Wed, 14 Aug 2013 10:33:16 +0200 Subject: [PATCH 135/523] xhci: Fix race between ep halt and URB cancellation The halted state of a endpoint cannot be cleared over CLEAR_HALT from a user process, because the stopped_td variable was overwritten in the handle_stopped_endpoint() function. So the xhci_endpoint_reset() function will refuse the reset and communication with device can not run over this endpoint. https://bugzilla.kernel.org/show_bug.cgi?id=60699 Signed-off-by: Florian Wolter Signed-off-by: Sarah Sharp --- drivers/usb/host/xhci-ring.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index dd02402700d5..6bfbd80ec2b9 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -869,8 +869,12 @@ remove_finished_td: /* Otherwise ring the doorbell(s) to restart queued transfers */ ring_doorbell_for_active_rings(xhci, slot_id, ep_index); } - ep->stopped_td = NULL; - ep->stopped_trb = NULL; + + /* Clear stopped_td and stopped_trb if endpoint is not halted */ + if (!(ep->ep_state & EP_HALTED)) { + ep->stopped_td = NULL; + ep->stopped_trb = NULL; + } /* * Drop the lock and complete the URBs in the cancelled TD list. From 38d7f6885164b114fdfae84bc18397e8fced9b00 Mon Sep 17 00:00:00 2001 From: Xenia Ragiadakou Date: Wed, 4 Sep 2013 17:24:45 +0300 Subject: [PATCH 136/523] usbcore: check usb device's state before sending a Set SEL control transfer Set SEL control urbs cannot be sent to a device in unconfigured state. This patch adds a check in usb_req_set_sel() to ensure the usb device's state is USB_STATE_CONFIGURED. Signed-off-by: Xenia Ragiadakou Reported-by: Martin MOKREJS Suggested-by: Sarah Sharp Signed-off-by: Sarah Sharp --- drivers/usb/core/hub.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index dde4c83516a1..e6b682c6c236 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3426,6 +3426,9 @@ static int usb_req_set_sel(struct usb_device *udev, enum usb3_link_state state) unsigned long long u2_pel; int ret; + if (udev->state != USB_STATE_CONFIGURED) + return 0; + /* Convert SEL and PEL stored in ns to us */ u1_sel = DIV_ROUND_UP(udev->u1_params.sel, 1000); u1_pel = DIV_ROUND_UP(udev->u1_params.pel, 1000); From e29bb4ebbf000ff9ac081d29784a3331618f012e Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 20 Sep 2013 10:20:59 +0100 Subject: [PATCH 137/523] drm/i915: Use a temporary va_list for two-pass string handling In commit edc3d8848dc9fe2a470316363dab8ef211d77e01 Author: Mika Kuoppala Date: Thu May 23 13:55:35 2013 +0300 drm/i915: avoid big kmallocs on reading error state we introduce a two-pass mechanism for splitting long strings being formatted into the error-state. The first pass finds the length, and the second pass emits the right portion of the string into the accumulation buffer. Unfortunately we use the same va_list for both passes, resulting in the second pass reading garbage off the end of the argument list. As the two passes are only used for boundaries between read() calls, the corruption is only rarely seen. This fixes the root cause behind commit baf27f9b17bf2f369f3865e38c41d2163e8d815d Author: Chris Wilson Date: Sat Jun 29 23:26:50 2013 +0100 drm/i915: Break up the large vsnprintf() in print_error_buffers() Signed-off-by: Chris Wilson Cc: Mika Kuoppala Cc: Daniel Vetter Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_gpu_error.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c index aba9d7498996..dae364f0028c 100644 --- a/drivers/gpu/drm/i915/i915_gpu_error.c +++ b/drivers/gpu/drm/i915/i915_gpu_error.c @@ -143,8 +143,10 @@ static void i915_error_vprintf(struct drm_i915_error_state_buf *e, /* Seek the first printf which is hits start position */ if (e->pos < e->start) { - len = vsnprintf(NULL, 0, f, args); - if (!__i915_error_seek(e, len)) + va_list tmp; + + va_copy(tmp, args); + if (!__i915_error_seek(e, vsnprintf(NULL, 0, f, tmp))) return; } From becee6b8c7b2b4adc9a3e0bec633abecd591b9ef Mon Sep 17 00:00:00 2001 From: "Maciej W. Rozycki" Date: Sun, 22 Sep 2013 22:04:27 +0100 Subject: [PATCH 138/523] MIPS: cpu-features.h: s/MIPS53/MIPS64/ No support for MIPS53 processors yet. Signed-off-by: Maciej W. Rozycki Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5876/ Signed-off-by: Ralf Baechle --- arch/mips/include/asm/cpu-features.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h index 51680d15ca8e..d445d060e346 100644 --- a/arch/mips/include/asm/cpu-features.h +++ b/arch/mips/include/asm/cpu-features.h @@ -187,7 +187,7 @@ /* * MIPS32, MIPS64, VR5500, IDT32332, IDT32334 and maybe a few other - * pre-MIPS32/MIPS53 processors have CLO, CLZ. The IDT RC64574 is 64-bit and + * pre-MIPS32/MIPS64 processors have CLO, CLZ. The IDT RC64574 is 64-bit and * has CLO and CLZ but not DCLO nor DCLZ. For 64-bit kernels * cpu_has_clo_clz also indicates the availability of DCLO and DCLZ. */ From 69d75671d985ccdb291e4d19ddfdecd12440e857 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 12 Sep 2013 22:00:15 +0200 Subject: [PATCH 139/523] udf: Fortify LVID loading A user has reported an oops in udf_statfs() that was caused by numOfPartitions entry in LVID structure being corrupted. Fix the problem by verifying whether numOfPartitions makes sense at least to the extent that LVID fits into a single block as it should. Reported-by: Juergen Weigert Signed-off-by: Jan Kara --- fs/udf/ialloc.c | 16 ++++++------- fs/udf/super.c | 64 ++++++++++++++++++++++++++++++------------------- fs/udf/udf_sb.h | 2 +- 3 files changed, 48 insertions(+), 34 deletions(-) diff --git a/fs/udf/ialloc.c b/fs/udf/ialloc.c index 7e5aae4bf46f..6eaf5edf1ea1 100644 --- a/fs/udf/ialloc.c +++ b/fs/udf/ialloc.c @@ -30,18 +30,17 @@ void udf_free_inode(struct inode *inode) { struct super_block *sb = inode->i_sb; struct udf_sb_info *sbi = UDF_SB(sb); + struct logicalVolIntegrityDescImpUse *lvidiu = udf_sb_lvidiu(sb); - mutex_lock(&sbi->s_alloc_mutex); - if (sbi->s_lvid_bh) { - struct logicalVolIntegrityDescImpUse *lvidiu = - udf_sb_lvidiu(sbi); + if (lvidiu) { + mutex_lock(&sbi->s_alloc_mutex); if (S_ISDIR(inode->i_mode)) le32_add_cpu(&lvidiu->numDirs, -1); else le32_add_cpu(&lvidiu->numFiles, -1); udf_updated_lvid(sb); + mutex_unlock(&sbi->s_alloc_mutex); } - mutex_unlock(&sbi->s_alloc_mutex); udf_free_blocks(sb, NULL, &UDF_I(inode)->i_location, 0, 1); } @@ -55,6 +54,7 @@ struct inode *udf_new_inode(struct inode *dir, umode_t mode, int *err) uint32_t start = UDF_I(dir)->i_location.logicalBlockNum; struct udf_inode_info *iinfo; struct udf_inode_info *dinfo = UDF_I(dir); + struct logicalVolIntegrityDescImpUse *lvidiu; inode = new_inode(sb); @@ -92,12 +92,10 @@ struct inode *udf_new_inode(struct inode *dir, umode_t mode, int *err) return NULL; } - if (sbi->s_lvid_bh) { - struct logicalVolIntegrityDescImpUse *lvidiu; - + lvidiu = udf_sb_lvidiu(sb); + if (lvidiu) { iinfo->i_unique = lvid_get_unique_id(sb); mutex_lock(&sbi->s_alloc_mutex); - lvidiu = udf_sb_lvidiu(sbi); if (S_ISDIR(mode)) le32_add_cpu(&lvidiu->numDirs, 1); else diff --git a/fs/udf/super.c b/fs/udf/super.c index 839a2bad7f45..91219385691d 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -94,13 +94,25 @@ static unsigned int udf_count_free(struct super_block *); static int udf_statfs(struct dentry *, struct kstatfs *); static int udf_show_options(struct seq_file *, struct dentry *); -struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi) +struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb) { - struct logicalVolIntegrityDesc *lvid = - (struct logicalVolIntegrityDesc *)sbi->s_lvid_bh->b_data; - __u32 number_of_partitions = le32_to_cpu(lvid->numOfPartitions); - __u32 offset = number_of_partitions * 2 * - sizeof(uint32_t)/sizeof(uint8_t); + struct logicalVolIntegrityDesc *lvid; + unsigned int partnum; + unsigned int offset; + + if (!UDF_SB(sb)->s_lvid_bh) + return NULL; + lvid = (struct logicalVolIntegrityDesc *)UDF_SB(sb)->s_lvid_bh->b_data; + partnum = le32_to_cpu(lvid->numOfPartitions); + if ((sb->s_blocksize - sizeof(struct logicalVolIntegrityDescImpUse) - + offsetof(struct logicalVolIntegrityDesc, impUse)) / + (2 * sizeof(uint32_t)) < partnum) { + udf_err(sb, "Logical volume integrity descriptor corrupted " + "(numOfPartitions = %u)!\n", partnum); + return NULL; + } + /* The offset is to skip freeSpaceTable and sizeTable arrays */ + offset = partnum * 2 * sizeof(uint32_t); return (struct logicalVolIntegrityDescImpUse *)&(lvid->impUse[offset]); } @@ -629,9 +641,10 @@ static int udf_remount_fs(struct super_block *sb, int *flags, char *options) struct udf_options uopt; struct udf_sb_info *sbi = UDF_SB(sb); int error = 0; + struct logicalVolIntegrityDescImpUse *lvidiu = udf_sb_lvidiu(sb); - if (sbi->s_lvid_bh) { - int write_rev = le16_to_cpu(udf_sb_lvidiu(sbi)->minUDFWriteRev); + if (lvidiu) { + int write_rev = le16_to_cpu(lvidiu->minUDFWriteRev); if (write_rev > UDF_MAX_WRITE_VERSION && !(*flags & MS_RDONLY)) return -EACCES; } @@ -1905,11 +1918,12 @@ static void udf_open_lvid(struct super_block *sb) if (!bh) return; + lvid = (struct logicalVolIntegrityDesc *)bh->b_data; + lvidiu = udf_sb_lvidiu(sb); + if (!lvidiu) + return; mutex_lock(&sbi->s_alloc_mutex); - lvid = (struct logicalVolIntegrityDesc *)bh->b_data; - lvidiu = udf_sb_lvidiu(sbi); - lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX; lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX; udf_time_to_disk_stamp(&lvid->recordingDateAndTime, @@ -1937,10 +1951,12 @@ static void udf_close_lvid(struct super_block *sb) if (!bh) return; + lvid = (struct logicalVolIntegrityDesc *)bh->b_data; + lvidiu = udf_sb_lvidiu(sb); + if (!lvidiu) + return; mutex_lock(&sbi->s_alloc_mutex); - lvid = (struct logicalVolIntegrityDesc *)bh->b_data; - lvidiu = udf_sb_lvidiu(sbi); lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX; lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX; udf_time_to_disk_stamp(&lvid->recordingDateAndTime, CURRENT_TIME); @@ -2093,15 +2109,19 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent) if (sbi->s_lvid_bh) { struct logicalVolIntegrityDescImpUse *lvidiu = - udf_sb_lvidiu(sbi); - uint16_t minUDFReadRev = le16_to_cpu(lvidiu->minUDFReadRev); - uint16_t minUDFWriteRev = le16_to_cpu(lvidiu->minUDFWriteRev); - /* uint16_t maxUDFWriteRev = - le16_to_cpu(lvidiu->maxUDFWriteRev); */ + udf_sb_lvidiu(sb); + uint16_t minUDFReadRev; + uint16_t minUDFWriteRev; + if (!lvidiu) { + ret = -EINVAL; + goto error_out; + } + minUDFReadRev = le16_to_cpu(lvidiu->minUDFReadRev); + minUDFWriteRev = le16_to_cpu(lvidiu->minUDFWriteRev); if (minUDFReadRev > UDF_MAX_READ_VERSION) { udf_err(sb, "minUDFReadRev=%x (max is %x)\n", - le16_to_cpu(lvidiu->minUDFReadRev), + minUDFReadRev, UDF_MAX_READ_VERSION); ret = -EINVAL; goto error_out; @@ -2265,11 +2285,7 @@ static int udf_statfs(struct dentry *dentry, struct kstatfs *buf) struct logicalVolIntegrityDescImpUse *lvidiu; u64 id = huge_encode_dev(sb->s_bdev->bd_dev); - if (sbi->s_lvid_bh != NULL) - lvidiu = udf_sb_lvidiu(sbi); - else - lvidiu = NULL; - + lvidiu = udf_sb_lvidiu(sb); buf->f_type = UDF_SUPER_MAGIC; buf->f_bsize = sb->s_blocksize; buf->f_blocks = sbi->s_partmaps[sbi->s_partition].s_partition_len; diff --git a/fs/udf/udf_sb.h b/fs/udf/udf_sb.h index ed401e94aa8c..1f32c7bd9f57 100644 --- a/fs/udf/udf_sb.h +++ b/fs/udf/udf_sb.h @@ -162,7 +162,7 @@ static inline struct udf_sb_info *UDF_SB(struct super_block *sb) return sb->s_fs_info; } -struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi); +struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct super_block *sb); int udf_compute_nr_groups(struct super_block *sb, u32 partition); From 7bc9cc07ee5bbac58bab88e8a5d6e32785f8fd32 Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Mon, 23 Sep 2013 16:50:28 -0400 Subject: [PATCH 140/523] reiserfs: remove useless flush_old_journal_lists Commit a3172027 introduced test_transaction as a requirement for flushing old lists -- but it can never return 1 unless the transaction has already been flushed. As a result, we have a routine that iterates the j_realblocks list but doesn't actually do anything. Since it's been this way since 2006 and the latency numbers were what Chris expected, let's just rip it out. Signed-off-by: Jeff Mahoney Signed-off-by: Jan Kara --- fs/reiserfs/journal.c | 62 ------------------------------------------- 1 file changed, 62 deletions(-) diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index 73feacc49b2e..7a37473b44dd 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -1163,21 +1163,6 @@ static struct reiserfs_journal_list *find_newer_jl_for_cn(struct return NULL; } -static int newer_jl_done(struct reiserfs_journal_cnode *cn) -{ - struct super_block *sb = cn->sb; - b_blocknr_t blocknr = cn->blocknr; - - cn = cn->hprev; - while (cn) { - if (cn->sb == sb && cn->blocknr == blocknr && cn->jlist && - atomic_read(&cn->jlist->j_commit_left) != 0) - return 0; - cn = cn->hprev; - } - return 1; -} - static void remove_journal_hash(struct super_block *, struct reiserfs_journal_cnode **, struct reiserfs_journal_list *, unsigned long, @@ -1593,31 +1578,6 @@ static int flush_journal_list(struct super_block *s, return err; } -static int test_transaction(struct super_block *s, - struct reiserfs_journal_list *jl) -{ - struct reiserfs_journal_cnode *cn; - - if (jl->j_len == 0 || atomic_read(&jl->j_nonzerolen) == 0) - return 1; - - cn = jl->j_realblock; - while (cn) { - /* if the blocknr == 0, this has been cleared from the hash, - ** skip it - */ - if (cn->blocknr == 0) { - goto next; - } - if (cn->bh && !newer_jl_done(cn)) - return 0; - next: - cn = cn->next; - cond_resched(); - } - return 0; -} - static int write_one_transaction(struct super_block *s, struct reiserfs_journal_list *jl, struct buffer_chunk *chunk) @@ -3868,27 +3828,6 @@ int reiserfs_prepare_for_journal(struct super_block *sb, return 1; } -static void flush_old_journal_lists(struct super_block *s) -{ - struct reiserfs_journal *journal = SB_JOURNAL(s); - struct reiserfs_journal_list *jl; - struct list_head *entry; - time_t now = get_seconds(); - - while (!list_empty(&journal->j_journal_list)) { - entry = journal->j_journal_list.next; - jl = JOURNAL_LIST_ENTRY(entry); - /* this check should always be run, to send old lists to disk */ - if (jl->j_timestamp < (now - (JOURNAL_MAX_TRANS_AGE * 4)) && - atomic_read(&jl->j_commit_left) == 0 && - test_transaction(s, jl)) { - flush_used_journal_lists(s, jl); - } else { - break; - } - } -} - /* ** long and ugly. If flush, will not return until all commit ** blocks and all real buffers in the trans are on disk. @@ -4232,7 +4171,6 @@ static int do_journal_end(struct reiserfs_transaction_handle *th, } } } - flush_old_journal_lists(sb); journal->j_current_jl->j_list_bitmap = get_list_bitmap(sb, journal->j_current_jl); From 721a769c034204e8e5f6ca4ecbff249e0225333b Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Mon, 23 Sep 2013 16:50:42 -0400 Subject: [PATCH 141/523] reiserfs: fix race with flush_used_journal_lists and flush_journal_list There are two locks involved in managing the journal lists. The general reiserfs_write_lock and the journal->j_flush_mutex. While flush_journal_list is sleeping to acquire the j_flush_mutex or to submit a block for write, it will drop the write lock. This allows another thread to acquire the write lock and ultimately call flush_used_journal_lists to traverse the list of journal lists and select one for flushing. It can select the journal_list that has just had flush_journal_list called on it in the original thread and call it again with the same journal_list. The second thread then drops the write lock to acquire j_flush_mutex and the first thread reacquires it and continues execution and eventually clears and frees the journal list before dropping j_flush_mutex and returning. The second thread acquires j_flush_mutex and ends up operating on a journal_list that has already been released. If the memory hasn't been reused, we'll soon after hit a BUG_ON because the transaction id has already been cleared. If it's been reused, we'll crash in other fun ways. Since flush_journal_list will synchronize on j_flush_mutex, we can fix the race by taking a proper reference in flush_used_journal_lists and checking to see if it's still valid after the mutex is taken. It's safe to iterate the list of journal lists and pick a list with just the write lock as long as a reference is taken on the journal list before we drop the lock. We already have code to handle whether a transaction has been flushed already so we can use that to handle the race and get rid of the trans_id BUG_ON. Signed-off-by: Jeff Mahoney Signed-off-by: Jan Kara --- fs/reiserfs/journal.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index 7a37473b44dd..fd777032c2ba 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -1338,7 +1338,6 @@ static int flush_journal_list(struct super_block *s, reiserfs_warning(s, "clm-2048", "called with wcount %d", atomic_read(&journal->j_wcount)); } - BUG_ON(jl->j_trans_id == 0); /* if flushall == 0, the lock is already held */ if (flushall) { @@ -1765,6 +1764,8 @@ static int flush_used_journal_lists(struct super_block *s, break; tjl = JOURNAL_LIST_ENTRY(tjl->j_list.next); } + get_journal_list(jl); + get_journal_list(flush_jl); /* try to find a group of blocks we can flush across all the ** transactions, but only bother if we've actually spanned ** across multiple lists @@ -1773,6 +1774,8 @@ static int flush_used_journal_lists(struct super_block *s, ret = kupdate_transactions(s, jl, &tjl, &trans_id, len, i); } flush_journal_list(s, flush_jl, 1); + put_journal_list(s, flush_jl); + put_journal_list(s, jl); return 0; } From 0b6e8569b7b767f9418f1b043aa5986015a33b21 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Fri, 13 Sep 2013 13:10:27 -0600 Subject: [PATCH 142/523] MAINTAINERS: add overall IOMMU section I believe that Joerg Roedel is at least the path through which drivers/iommu changes should be merged. Add a MAINTAINERS entry to make this clear, so that he's Cd'd on all relevant patches. This is relevant for non-AMD/Intel IOMMUs, where get_maintainers.pl doesn't currently remind anyone to Cc Joerg on patches. Signed-off-by: Stephen Warren Signed-off-by: Joerg Roedel --- MAINTAINERS | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index e61c2e83fc2b..25d2d56b4e6a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4457,6 +4457,13 @@ L: linux-serial@vger.kernel.org S: Maintained F: drivers/tty/serial/ioc3_serial.c +IOMMU DRIVERS +M: Joerg Roedel +L: iommu@lists.linux-foundation.org +T: git git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git +S: Maintained +F: drivers/iommu/ + IP MASQUERADING M: Juanjo Ciarlante S: Maintained From 82aeef0bf03684b377678c00c05e613f30dca39c Mon Sep 17 00:00:00 2001 From: "Li, Zhen-Hua" Date: Fri, 13 Sep 2013 14:27:32 +0800 Subject: [PATCH 143/523] x86/iommu: correct ICS register offset According to Intel Vt-D specs, the offset of Invalidation complete status register should be 0x9C, not 0x98. See Intel's VT-d spec, Revision 1.3, Chapter 10.4, Page 98; Signed-off-by: Li, Zhen-Hua Signed-off-by: Joerg Roedel --- include/linux/intel-iommu.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index 78e2ada50cd5..d380c5e68008 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -55,7 +55,7 @@ #define DMAR_IQT_REG 0x88 /* Invalidation queue tail register */ #define DMAR_IQ_SHIFT 4 /* Invalidation queue head/tail shift */ #define DMAR_IQA_REG 0x90 /* Invalidation queue addr register */ -#define DMAR_ICS_REG 0x98 /* Invalidation complete status register */ +#define DMAR_ICS_REG 0x9c /* Invalidation complete status register */ #define DMAR_IRTA_REG 0xb8 /* Interrupt remapping table addr register */ #define OFFSET_STRIDE (9) From 1a462d189280b560bd84af1407e4d848e262b3b3 Mon Sep 17 00:00:00 2001 From: Duan Jiong Date: Fri, 20 Sep 2013 18:20:28 +0800 Subject: [PATCH 144/523] net: udp: do not report ICMP redirects to user space Redirect isn't an error condition, it should leave the error handler without touching the socket. Signed-off-by: Duan Jiong Signed-off-by: David S. Miller --- net/ipv4/udp.c | 2 +- net/ipv6/udp.c | 4 +++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 74d2c95db57f..0ca44df51ee9 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -658,7 +658,7 @@ void __udp4_lib_err(struct sk_buff *skb, u32 info, struct udp_table *udptable) break; case ICMP_REDIRECT: ipv4_sk_redirect(skb, sk); - break; + goto out; } /* diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index f4058150262b..72b7eaaf3ca0 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -525,8 +525,10 @@ void __udp6_lib_err(struct sk_buff *skb, struct inet6_skb_parm *opt, if (type == ICMPV6_PKT_TOOBIG) ip6_sk_update_pmtu(skb, sk, info); - if (type == NDISC_REDIRECT) + if (type == NDISC_REDIRECT) { ip6_sk_redirect(skb, sk); + goto out; + } np = inet6_sk(sk); From 8d65b1190ddc548b0411477f308d04f4595bac57 Mon Sep 17 00:00:00 2001 From: Duan Jiong Date: Fri, 20 Sep 2013 18:21:25 +0800 Subject: [PATCH 145/523] net: raw: do not report ICMP redirects to user space Redirect isn't an error condition, it should leave the error handler without touching the socket. Signed-off-by: Duan Jiong Signed-off-by: David S. Miller --- net/ipv4/raw.c | 4 +++- net/ipv6/raw.c | 4 +++- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c index bfec521c717f..193db03540ad 100644 --- a/net/ipv4/raw.c +++ b/net/ipv4/raw.c @@ -218,8 +218,10 @@ static void raw_err(struct sock *sk, struct sk_buff *skb, u32 info) if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) ipv4_sk_update_pmtu(skb, sk, info); - else if (type == ICMP_REDIRECT) + else if (type == ICMP_REDIRECT) { ipv4_sk_redirect(skb, sk); + return; + } /* Report error on raw socket, if: 1. User requested ip_recverr. diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index 58916bbb1728..a4ed2416399e 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -335,8 +335,10 @@ static void rawv6_err(struct sock *sk, struct sk_buff *skb, ip6_sk_update_pmtu(skb, sk, info); harderr = (np->pmtudisc == IPV6_PMTUDISC_DO); } - if (type == NDISC_REDIRECT) + if (type == NDISC_REDIRECT) { ip6_sk_redirect(skb, sk); + return; + } if (np->recverr) { u8 *payload = skb->data; if (!inet->hdrincl) From 3361dc9538832a2a9150a8c722374ca844bf8dc8 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Fri, 20 Sep 2013 13:53:22 -0400 Subject: [PATCH 146/523] skge: fix invalid value passed to pci_unmap_sigle In my patch c194992cbe71c20bb3623a566af8d11b0bfaa721 ("skge: fix broken driver") I didn't fix the skge bug correctly. The value of the new mapping (not old) was passed to pci_unmap_single. If we enable CONFIG_DMA_API_DEBUG, it results in this warning: WARNING: CPU: 0 PID: 0 at lib/dma-debug.c:986 check_sync+0x4c4/0x580() skge 0000:02:07.0: DMA-API: device driver tries to sync DMA memory it has not allocated [device address=0x000000023a0096c0] [size=1536 bytes] This patch makes the skge driver pass the correct value to pci_unmap_single and fixes the warning. It copies the old descriptor to on-stack variable "ee" and unmaps it if mapping of the new descriptor succeeded. This patch should be backported to 3.11-stable. Signed-off-by: Mikulas Patocka Reported-by: Francois Romieu Tested-by: Mikulas Patocka Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/skge.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/marvell/skge.c b/drivers/net/ethernet/marvell/skge.c index 1a9c4f6269ea..ecc7f7b696b8 100644 --- a/drivers/net/ethernet/marvell/skge.c +++ b/drivers/net/ethernet/marvell/skge.c @@ -3086,13 +3086,16 @@ static struct sk_buff *skge_rx_get(struct net_device *dev, PCI_DMA_FROMDEVICE); skge_rx_reuse(e, skge->rx_buf_size); } else { + struct skge_element ee; struct sk_buff *nskb; nskb = netdev_alloc_skb_ip_align(dev, skge->rx_buf_size); if (!nskb) goto resubmit; - skb = e->skb; + ee = *e; + + skb = ee.skb; prefetch(skb->data); if (skge_rx_setup(skge, e, nskb, skge->rx_buf_size) < 0) { @@ -3101,8 +3104,8 @@ static struct sk_buff *skge_rx_get(struct net_device *dev, } pci_unmap_single(skge->hw->pdev, - dma_unmap_addr(e, mapaddr), - dma_unmap_len(e, maplen), + dma_unmap_addr(&ee, mapaddr), + dma_unmap_len(&ee, maplen), PCI_DMA_FROMDEVICE); } From 99d79aa2f3b7729e7290e8bda5d0dd8b0240ec62 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 23 Sep 2013 15:47:08 -0400 Subject: [PATCH 147/523] drm/radeon: add missing hdmi callbacks for rv6xx MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When dpm was merged, I added a new asic struct for rv6xx, but it never got properly updated when the hdmi callbacks were added due to the two patch sets being developed in parallel. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=69729 Signed-off-by: Alex Deucher Reviewed-by: Christian König Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_asic.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c index 5003385a7512..8f7e04538fd6 100644 --- a/drivers/gpu/drm/radeon/radeon_asic.c +++ b/drivers/gpu/drm/radeon/radeon_asic.c @@ -1004,6 +1004,8 @@ static struct radeon_asic rv6xx_asic = { .wait_for_vblank = &avivo_wait_for_vblank, .set_backlight_level = &atombios_set_backlight_level, .get_backlight_level = &atombios_get_backlight_level, + .hdmi_enable = &r600_hdmi_enable, + .hdmi_setmode = &r600_hdmi_setmode, }, .copy = { .blit = &r600_copy_cpdma, From 13c5bfdad758bddc199850c22246ddf26adcec1f Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 24 Sep 2013 10:56:55 -0400 Subject: [PATCH 148/523] drm/radeon/cik: fix overflow in vram fetch Missing ULL when calculating the amount of vram leads to an overflow when the amount of vram is >= 4G. Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/cik.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c index 5e6802d8a59a..d02fd1c045d5 100644 --- a/drivers/gpu/drm/radeon/cik.c +++ b/drivers/gpu/drm/radeon/cik.c @@ -4454,8 +4454,8 @@ static int cik_mc_init(struct radeon_device *rdev) rdev->mc.aper_base = pci_resource_start(rdev->pdev, 0); rdev->mc.aper_size = pci_resource_len(rdev->pdev, 0); /* size in MB on si */ - rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024; - rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024; + rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE) * 1024ULL * 1024ULL; + rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE) * 1024ULL * 1024ULL; rdev->mc.visible_vram_size = rdev->mc.aper_size; si_vram_gtt_location(rdev, &rdev->mc); radeon_update_bandwidth_info(rdev); From 3db9180213af6aa54effc2b94bc9090dc1f68673 Mon Sep 17 00:00:00 2001 From: "malahal@us.ibm.com" Date: Fri, 20 Sep 2013 16:21:17 -0500 Subject: [PATCH 149/523] qlge: call ql_core_dump() only if dump memory was allocated. Also changed a log message to indicate that memory was not allocated instead of memory not available! Signed-off-by: Malahal Naineni Acked-by: Jitendra Kalsaria Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qlge/qlge_dbg.c | 4 ++-- drivers/net/ethernet/qlogic/qlge/qlge_mpi.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_dbg.c b/drivers/net/ethernet/qlogic/qlge/qlge_dbg.c index 10093f0c4c0f..6bc5db703920 100644 --- a/drivers/net/ethernet/qlogic/qlge/qlge_dbg.c +++ b/drivers/net/ethernet/qlogic/qlge/qlge_dbg.c @@ -740,8 +740,8 @@ int ql_core_dump(struct ql_adapter *qdev, struct ql_mpi_coredump *mpi_coredump) int i; if (!mpi_coredump) { - netif_err(qdev, drv, qdev->ndev, "No memory available\n"); - return -ENOMEM; + netif_err(qdev, drv, qdev->ndev, "No memory allocated\n"); + return -EINVAL; } /* Try to get the spinlock, but dont worry if diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_mpi.c b/drivers/net/ethernet/qlogic/qlge/qlge_mpi.c index ff2bf8a4e247..7ad146080c36 100644 --- a/drivers/net/ethernet/qlogic/qlge/qlge_mpi.c +++ b/drivers/net/ethernet/qlogic/qlge/qlge_mpi.c @@ -1274,7 +1274,7 @@ void ql_mpi_reset_work(struct work_struct *work) return; } - if (!ql_core_dump(qdev, qdev->mpi_coredump)) { + if (qdev->mpi_coredump && !ql_core_dump(qdev, qdev->mpi_coredump)) { netif_err(qdev, drv, qdev->ndev, "Core is dumped!\n"); qdev->core_is_dumped = 1; queue_delayed_work(qdev->workqueue, From 2811ebac2521ceac84f2bdae402455baa6a7fb47 Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Sat, 21 Sep 2013 06:27:00 +0200 Subject: [PATCH 150/523] ipv6: udp packets following an UFO enqueued packet need also be handled by UFO In the following scenario the socket is corked: If the first UDP packet is larger then the mtu we try to append it to the write queue via ip6_ufo_append_data. A following packet, which is smaller than the mtu would be appended to the already queued up gso-skb via plain ip6_append_data. This causes random memory corruptions. In ip6_ufo_append_data we also have to be careful to not queue up the same skb multiple times. So setup the gso frame only when no first skb is available. This also fixes a shortcoming where we add the current packet's length to cork->length but return early because of a packet > mtu with dontfrag set (instead of sutracting it again). Found with trinity. Cc: YOSHIFUJI Hideaki Signed-off-by: Hannes Frederic Sowa Reported-by: Dmitry Vyukov Signed-off-by: David S. Miller --- net/ipv6/ip6_output.c | 55 ++++++++++++++++++------------------------- 1 file changed, 23 insertions(+), 32 deletions(-) diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 3a692d529163..a54c45ce4a48 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -1015,6 +1015,8 @@ static inline int ip6_ufo_append_data(struct sock *sk, * udp datagram */ if ((skb = skb_peek_tail(&sk->sk_write_queue)) == NULL) { + struct frag_hdr fhdr; + skb = sock_alloc_send_skb(sk, hh_len + fragheaderlen + transhdrlen + 20, (flags & MSG_DONTWAIT), &err); @@ -1036,12 +1038,6 @@ static inline int ip6_ufo_append_data(struct sock *sk, skb->protocol = htons(ETH_P_IPV6); skb->ip_summed = CHECKSUM_PARTIAL; skb->csum = 0; - } - - err = skb_append_datato_frags(sk,skb, getfrag, from, - (length - transhdrlen)); - if (!err) { - struct frag_hdr fhdr; /* Specify the length of each IPv6 datagram fragment. * It has to be a multiple of 8. @@ -1052,15 +1048,10 @@ static inline int ip6_ufo_append_data(struct sock *sk, ipv6_select_ident(&fhdr, rt); skb_shinfo(skb)->ip6_frag_id = fhdr.identification; __skb_queue_tail(&sk->sk_write_queue, skb); - - return 0; } - /* There is not enough support do UPD LSO, - * so follow normal path - */ - kfree_skb(skb); - return err; + return skb_append_datato_frags(sk, skb, getfrag, from, + (length - transhdrlen)); } static inline struct ipv6_opt_hdr *ip6_opt_dup(struct ipv6_opt_hdr *src, @@ -1227,27 +1218,27 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, * --yoshfuji */ - cork->length += length; - if (length > mtu) { - int proto = sk->sk_protocol; - if (dontfrag && (proto == IPPROTO_UDP || proto == IPPROTO_RAW)){ - ipv6_local_rxpmtu(sk, fl6, mtu-exthdrlen); - return -EMSGSIZE; - } - - if (proto == IPPROTO_UDP && - (rt->dst.dev->features & NETIF_F_UFO)) { - - err = ip6_ufo_append_data(sk, getfrag, from, length, - hh_len, fragheaderlen, - transhdrlen, mtu, flags, rt); - if (err) - goto error; - return 0; - } + if ((length > mtu) && dontfrag && (sk->sk_protocol == IPPROTO_UDP || + sk->sk_protocol == IPPROTO_RAW)) { + ipv6_local_rxpmtu(sk, fl6, mtu-exthdrlen); + return -EMSGSIZE; } - if ((skb = skb_peek_tail(&sk->sk_write_queue)) == NULL) + skb = skb_peek_tail(&sk->sk_write_queue); + cork->length += length; + if (((length > mtu) || + (skb && skb_is_gso(skb))) && + (sk->sk_protocol == IPPROTO_UDP) && + (rt->dst.dev->features & NETIF_F_UFO)) { + err = ip6_ufo_append_data(sk, getfrag, from, length, + hh_len, fragheaderlen, + transhdrlen, mtu, flags, rt); + if (err) + goto error; + return 0; + } + + if (!skb) goto alloc_new_skb; while (length > 0) { From 53dad6d3a8e5ac1af8bacc6ac2134ae1a8b085f1 Mon Sep 17 00:00:00 2001 From: Davidlohr Bueso Date: Mon, 23 Sep 2013 17:04:45 -0700 Subject: [PATCH 151/523] ipc: fix race with LSMs Currently, IPC mechanisms do security and auditing related checks under RCU. However, since security modules can free the security structure, for example, through selinux_[sem,msg_queue,shm]_free_security(), we can race if the structure is freed before other tasks are done with it, creating a use-after-free condition. Manfred illustrates this nicely, for instance with shared mem and selinux: -> do_shmat calls rcu_read_lock() -> do_shmat calls shm_object_check(). Checks that the object is still valid - but doesn't acquire any locks. Then it returns. -> do_shmat calls security_shm_shmat (e.g. selinux_shm_shmat) -> selinux_shm_shmat calls ipc_has_perm() -> ipc_has_perm accesses ipc_perms->security shm_close() -> shm_close acquires rw_mutex & shm_lock -> shm_close calls shm_destroy -> shm_destroy calls security_shm_free (e.g. selinux_shm_free_security) -> selinux_shm_free_security calls ipc_free_security(&shp->shm_perm) -> ipc_free_security calls kfree(ipc_perms->security) This patch delays the freeing of the security structures after all RCU readers are done. Furthermore it aligns the security life cycle with that of the rest of IPC - freeing them based on the reference counter. For situations where we need not free security, the current behavior is kept. Linus states: "... the old behavior was suspect for another reason too: having the security blob go away from under a user sounds like it could cause various other problems anyway, so I think the old code was at least _prone_ to bugs even if it didn't have catastrophic behavior." I have tested this patch with IPC testcases from LTP on both my quad-core laptop and on a 64 core NUMA server. In both cases selinux is enabled, and tests pass for both voluntary and forced preemption models. While the mentioned races are theoretical (at least no one as reported them), I wanted to make sure that this new logic doesn't break anything we weren't aware of. Suggested-by: Linus Torvalds Signed-off-by: Davidlohr Bueso Acked-by: Manfred Spraul Signed-off-by: Linus Torvalds --- ipc/msg.c | 19 +++++++++++++------ ipc/sem.c | 34 ++++++++++++++++++---------------- ipc/shm.c | 17 ++++++++++++----- ipc/util.c | 32 ++++++++++++-------------------- ipc/util.h | 10 +++++++++- 5 files changed, 64 insertions(+), 48 deletions(-) diff --git a/ipc/msg.c b/ipc/msg.c index b0d541d42677..9e4310c546ae 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -165,6 +165,15 @@ static inline void msg_rmid(struct ipc_namespace *ns, struct msg_queue *s) ipc_rmid(&msg_ids(ns), &s->q_perm); } +static void msg_rcu_free(struct rcu_head *head) +{ + struct ipc_rcu *p = container_of(head, struct ipc_rcu, rcu); + struct msg_queue *msq = ipc_rcu_to_struct(p); + + security_msg_queue_free(msq); + ipc_rcu_free(head); +} + /** * newque - Create a new msg queue * @ns: namespace @@ -189,15 +198,14 @@ static int newque(struct ipc_namespace *ns, struct ipc_params *params) msq->q_perm.security = NULL; retval = security_msg_queue_alloc(msq); if (retval) { - ipc_rcu_putref(msq); + ipc_rcu_putref(msq, ipc_rcu_free); return retval; } /* ipc_addid() locks msq upon success. */ id = ipc_addid(&msg_ids(ns), &msq->q_perm, ns->msg_ctlmni); if (id < 0) { - security_msg_queue_free(msq); - ipc_rcu_putref(msq); + ipc_rcu_putref(msq, msg_rcu_free); return id; } @@ -276,8 +284,7 @@ static void freeque(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp) free_msg(msg); } atomic_sub(msq->q_cbytes, &ns->msg_bytes); - security_msg_queue_free(msq); - ipc_rcu_putref(msq); + ipc_rcu_putref(msq, msg_rcu_free); } /* @@ -717,7 +724,7 @@ long do_msgsnd(int msqid, long mtype, void __user *mtext, rcu_read_lock(); ipc_lock_object(&msq->q_perm); - ipc_rcu_putref(msq); + ipc_rcu_putref(msq, ipc_rcu_free); if (msq->q_perm.deleted) { err = -EIDRM; goto out_unlock0; diff --git a/ipc/sem.c b/ipc/sem.c index 69b6a21f3844..19c8b980d1fe 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -243,6 +243,15 @@ static void merge_queues(struct sem_array *sma) } } +static void sem_rcu_free(struct rcu_head *head) +{ + struct ipc_rcu *p = container_of(head, struct ipc_rcu, rcu); + struct sem_array *sma = ipc_rcu_to_struct(p); + + security_sem_free(sma); + ipc_rcu_free(head); +} + /* * If the request contains only one semaphore operation, and there are * no complex transactions pending, lock only the semaphore involved. @@ -374,12 +383,7 @@ static inline struct sem_array *sem_obtain_object_check(struct ipc_namespace *ns static inline void sem_lock_and_putref(struct sem_array *sma) { sem_lock(sma, NULL, -1); - ipc_rcu_putref(sma); -} - -static inline void sem_putref(struct sem_array *sma) -{ - ipc_rcu_putref(sma); + ipc_rcu_putref(sma, ipc_rcu_free); } static inline void sem_rmid(struct ipc_namespace *ns, struct sem_array *s) @@ -458,14 +462,13 @@ static int newary(struct ipc_namespace *ns, struct ipc_params *params) sma->sem_perm.security = NULL; retval = security_sem_alloc(sma); if (retval) { - ipc_rcu_putref(sma); + ipc_rcu_putref(sma, ipc_rcu_free); return retval; } id = ipc_addid(&sem_ids(ns), &sma->sem_perm, ns->sc_semmni); if (id < 0) { - security_sem_free(sma); - ipc_rcu_putref(sma); + ipc_rcu_putref(sma, sem_rcu_free); return id; } ns->used_sems += nsems; @@ -1047,8 +1050,7 @@ static void freeary(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp) wake_up_sem_queue_do(&tasks); ns->used_sems -= sma->sem_nsems; - security_sem_free(sma); - ipc_rcu_putref(sma); + ipc_rcu_putref(sma, sem_rcu_free); } static unsigned long copy_semid_to_user(void __user *buf, struct semid64_ds *in, int version) @@ -1292,7 +1294,7 @@ static int semctl_main(struct ipc_namespace *ns, int semid, int semnum, rcu_read_unlock(); sem_io = ipc_alloc(sizeof(ushort)*nsems); if(sem_io == NULL) { - sem_putref(sma); + ipc_rcu_putref(sma, ipc_rcu_free); return -ENOMEM; } @@ -1328,20 +1330,20 @@ static int semctl_main(struct ipc_namespace *ns, int semid, int semnum, if(nsems > SEMMSL_FAST) { sem_io = ipc_alloc(sizeof(ushort)*nsems); if(sem_io == NULL) { - sem_putref(sma); + ipc_rcu_putref(sma, ipc_rcu_free); return -ENOMEM; } } if (copy_from_user (sem_io, p, nsems*sizeof(ushort))) { - sem_putref(sma); + ipc_rcu_putref(sma, ipc_rcu_free); err = -EFAULT; goto out_free; } for (i = 0; i < nsems; i++) { if (sem_io[i] > SEMVMX) { - sem_putref(sma); + ipc_rcu_putref(sma, ipc_rcu_free); err = -ERANGE; goto out_free; } @@ -1629,7 +1631,7 @@ static struct sem_undo *find_alloc_undo(struct ipc_namespace *ns, int semid) /* step 2: allocate new undo structure */ new = kzalloc(sizeof(struct sem_undo) + sizeof(short)*nsems, GFP_KERNEL); if (!new) { - sem_putref(sma); + ipc_rcu_putref(sma, ipc_rcu_free); return ERR_PTR(-ENOMEM); } diff --git a/ipc/shm.c b/ipc/shm.c index 2821cdf93adb..d69739610fd4 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -167,6 +167,15 @@ static inline void shm_lock_by_ptr(struct shmid_kernel *ipcp) ipc_lock_object(&ipcp->shm_perm); } +static void shm_rcu_free(struct rcu_head *head) +{ + struct ipc_rcu *p = container_of(head, struct ipc_rcu, rcu); + struct shmid_kernel *shp = ipc_rcu_to_struct(p); + + security_shm_free(shp); + ipc_rcu_free(head); +} + static inline void shm_rmid(struct ipc_namespace *ns, struct shmid_kernel *s) { ipc_rmid(&shm_ids(ns), &s->shm_perm); @@ -208,8 +217,7 @@ static void shm_destroy(struct ipc_namespace *ns, struct shmid_kernel *shp) user_shm_unlock(file_inode(shp->shm_file)->i_size, shp->mlock_user); fput (shp->shm_file); - security_shm_free(shp); - ipc_rcu_putref(shp); + ipc_rcu_putref(shp, shm_rcu_free); } /* @@ -497,7 +505,7 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params) shp->shm_perm.security = NULL; error = security_shm_alloc(shp); if (error) { - ipc_rcu_putref(shp); + ipc_rcu_putref(shp, ipc_rcu_free); return error; } @@ -566,8 +574,7 @@ no_id: user_shm_unlock(size, shp->mlock_user); fput(file); no_file: - security_shm_free(shp); - ipc_rcu_putref(shp); + ipc_rcu_putref(shp, shm_rcu_free); return error; } diff --git a/ipc/util.c b/ipc/util.c index e829da9ed01f..fdb8ae740775 100644 --- a/ipc/util.c +++ b/ipc/util.c @@ -474,11 +474,6 @@ void ipc_free(void* ptr, int size) kfree(ptr); } -struct ipc_rcu { - struct rcu_head rcu; - atomic_t refcount; -} ____cacheline_aligned_in_smp; - /** * ipc_rcu_alloc - allocate ipc and rcu space * @size: size desired @@ -505,27 +500,24 @@ int ipc_rcu_getref(void *ptr) return atomic_inc_not_zero(&p->refcount); } -/** - * ipc_schedule_free - free ipc + rcu space - * @head: RCU callback structure for queued work - */ -static void ipc_schedule_free(struct rcu_head *head) -{ - vfree(container_of(head, struct ipc_rcu, rcu)); -} - -void ipc_rcu_putref(void *ptr) +void ipc_rcu_putref(void *ptr, void (*func)(struct rcu_head *head)) { struct ipc_rcu *p = ((struct ipc_rcu *)ptr) - 1; if (!atomic_dec_and_test(&p->refcount)) return; - if (is_vmalloc_addr(ptr)) { - call_rcu(&p->rcu, ipc_schedule_free); - } else { - kfree_rcu(p, rcu); - } + call_rcu(&p->rcu, func); +} + +void ipc_rcu_free(struct rcu_head *head) +{ + struct ipc_rcu *p = container_of(head, struct ipc_rcu, rcu); + + if (is_vmalloc_addr(p)) + vfree(p); + else + kfree(p); } /** diff --git a/ipc/util.h b/ipc/util.h index c5f3338ba1fa..f2f5036f2eed 100644 --- a/ipc/util.h +++ b/ipc/util.h @@ -47,6 +47,13 @@ static inline void msg_exit_ns(struct ipc_namespace *ns) { } static inline void shm_exit_ns(struct ipc_namespace *ns) { } #endif +struct ipc_rcu { + struct rcu_head rcu; + atomic_t refcount; +} ____cacheline_aligned_in_smp; + +#define ipc_rcu_to_struct(p) ((void *)(p+1)) + /* * Structure that holds the parameters needed by the ipc operations * (see after) @@ -120,7 +127,8 @@ void ipc_free(void* ptr, int size); */ void* ipc_rcu_alloc(int size); int ipc_rcu_getref(void *ptr); -void ipc_rcu_putref(void *ptr); +void ipc_rcu_putref(void *ptr, void (*func)(struct rcu_head *head)); +void ipc_rcu_free(struct rcu_head *head); struct kern_ipc_perm *ipc_lock(struct ipc_ids *, int); struct kern_ipc_perm *ipc_obtain_object(struct ipc_ids *ids, int id); From db6aaf4d55f95dcb6b162c3a59b56eb1e85ccdfe Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 24 Sep 2013 10:37:13 +0100 Subject: [PATCH 152/523] drm/i2c: tda998x: fix audio muting Fix a bug that was introduced in commit c4c11dd160a8 ("drm/i2c: tda998x: add video and audio input configuration") when Sebastian cleaned up my original patch. Without this being fixed, audio is muted when the display is turned off, never to be re-enabled. Signed-off-by: Russell King Cc: Sebastian Hesselbarth Cc: Darren Etheridge Cc: Dave Airlie Signed-off-by: Linus Torvalds --- drivers/gpu/drm/i2c/tda998x_drv.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c index b1f8fc69023f..60e84043aa34 100644 --- a/drivers/gpu/drm/i2c/tda998x_drv.c +++ b/drivers/gpu/drm/i2c/tda998x_drv.c @@ -707,8 +707,7 @@ tda998x_encoder_dpms(struct drm_encoder *encoder, int mode) reg_write(encoder, REG_VIP_CNTRL_2, priv->vip_cntrl_2); break; case DRM_MODE_DPMS_OFF: - /* disable audio and video ports */ - reg_write(encoder, REG_ENA_AP, 0x00); + /* disable video ports */ reg_write(encoder, REG_ENA_VP_0, 0x00); reg_write(encoder, REG_ENA_VP_1, 0x00); reg_write(encoder, REG_ENA_VP_2, 0x00); From 4921e320244e099bdf237fd10428594ce5f5b87d Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Thu, 12 Sep 2013 18:39:36 +0200 Subject: [PATCH 153/523] perf kmem: Make it work again on non NUMA machines The commit '2814eb0 perf kmem: Remove die() calls' disabled 'perf kmem' command for machines without numa support. It made the command fail if '/sys/devices/system/node' dir wasn't found. Skipping the numa based initialization in case the directory is not found and continue execution. Signed-off-by: Jiri Olsa Cc: Corey Ashford Cc: Frederic Weisbecker Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1379003976-5839-5-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-kmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c index c2dff9cb1f2c..9b5f077fee5b 100644 --- a/tools/perf/builtin-kmem.c +++ b/tools/perf/builtin-kmem.c @@ -101,7 +101,7 @@ static int setup_cpunode_map(void) dir1 = opendir(PATH_SYS_NODE); if (!dir1) - return -1; + return 0; while ((dent1 = readdir(dir1)) != NULL) { if (dent1->d_type != DT_DIR || From 384c671e33a7ddf905f2c60b433b9883f0e5a605 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Sun, 22 Sep 2013 19:44:58 -0600 Subject: [PATCH 154/523] perf trace: Add mmap2 handler 5c5e854b changed perf_event__synthesize_mmap_events to generate MMAP2 events. Since perf-trace does not have a handler for it it dies with a segfault when trying to process files: perf trace -i /tmp/perf.data Segmentation fault Signed-off-by: David Ahern Link: http://lkml.kernel.org/r/1379900700-5186-4-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-trace.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index fd4853404727..71aa3e35406b 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -1055,6 +1055,7 @@ static int trace__replay(struct trace *trace) trace->tool.sample = trace__process_sample; trace->tool.mmap = perf_event__process_mmap; + trace->tool.mmap2 = perf_event__process_mmap2; trace->tool.comm = perf_event__process_comm; trace->tool.exit = perf_event__process_exit; trace->tool.fork = perf_event__process_fork; From 4885235806bb95c3fad5a5238e323cb746c3a49b Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 24 Sep 2013 16:01:13 +1000 Subject: [PATCH 155/523] xfs: lock the AIL before removing the buffer item Regression introduced by commit 46f9d2e ("xfs: aborted buf items can be in the AIL") which fails to lock the AIL before removing the item. Spinlock debugging throws a warning about this. Signed-off-by: Dave Chinner Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers --- fs/xfs/xfs_buf_item.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index 88c5ea75ebf6..f1d85cfc0a54 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -628,6 +628,7 @@ xfs_buf_item_unlock( else if (aborted) { ASSERT(XFS_FORCED_SHUTDOWN(lip->li_mountp)); if (lip->li_flags & XFS_LI_IN_AIL) { + spin_lock(&lip->li_ailp->xa_lock); xfs_trans_ail_delete(lip->li_ailp, lip, SHUTDOWN_LOG_IO_ERROR); } From b313a5f1cb0bf3276d5457b52b9f75a940e7b5e9 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 24 Sep 2013 16:01:14 +1000 Subject: [PATCH 156/523] xfs: asserting lock not held during freeing not valid When we free an inode, we do so via RCU. As an RCU lookup can occur at any time before we free an inode, and that lookup takes the inode flags lock, we cannot safely assert that the flags lock is not held just before marking it dead and running call_rcu() to free the inode. We check on allocation of a new inode structre that the lock is not held, so we still have protection against locks being leaked and hence not correctly initialised when allocated out of the slab. Hence just remove the assert... Signed-off-by: Dave Chinner Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers --- fs/xfs/xfs_icache.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c index 193206ba4358..474807a401c8 100644 --- a/fs/xfs/xfs_icache.c +++ b/fs/xfs/xfs_icache.c @@ -119,11 +119,6 @@ xfs_inode_free( ip->i_itemp = NULL; } - /* asserts to verify all state is correct here */ - ASSERT(atomic_read(&ip->i_pincount) == 0); - ASSERT(!spin_is_locked(&ip->i_flags_lock)); - ASSERT(!xfs_isiflocked(ip)); - /* * Because we use RCU freeing we need to ensure the inode always * appears to be reclaimed with an invalid inode number when in the @@ -135,6 +130,10 @@ xfs_inode_free( ip->i_ino = 0; spin_unlock(&ip->i_flags_lock); + /* asserts to verify all state is correct here */ + ASSERT(atomic_read(&ip->i_pincount) == 0); + ASSERT(!xfs_isiflocked(ip)); + call_rcu(&VFS_I(ip)->i_rcu, xfs_inode_free_callback); } From b771af2fcb4a8a2df7e9b8784cd80e1774c34198 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 24 Sep 2013 16:01:15 +1000 Subject: [PATCH 157/523] xfs: fix XFS_IOC_FREE_EOFBLOCKS definition It uses a kernel internal structure in it's definition rather than the user visible structure that is passed to the ioctl. Signed-off-by: Dave Chinner Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers --- fs/xfs/xfs_fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/xfs_fs.h index 1edb5cc3e5f4..18272c766a50 100644 --- a/fs/xfs/xfs_fs.h +++ b/fs/xfs/xfs_fs.h @@ -515,7 +515,7 @@ typedef struct xfs_swapext /* XFS_IOC_GETBIOSIZE ---- deprecated 47 */ #define XFS_IOC_GETBMAPX _IOWR('X', 56, struct getbmap) #define XFS_IOC_ZERO_RANGE _IOW ('X', 57, struct xfs_flock64) -#define XFS_IOC_FREE_EOFBLOCKS _IOR ('X', 58, struct xfs_eofblocks) +#define XFS_IOC_FREE_EOFBLOCKS _IOR ('X', 58, struct xfs_fs_eofblocks) /* * ioctl commands that replace IRIX syssgi()'s From 566055d33a91ddddb1cb31220b01ac4abd2d2bdd Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 24 Sep 2013 16:01:16 +1000 Subject: [PATCH 158/523] xfs: log recovery lsn ordering needs uuid check After a fair number of xfstests runs, xfs/182 started to fail regularly with a corrupted directory - a directory read verifier was failing after recovery because it found a block with a XARM magic number (remote attribute block) rather than a directory data block. The first time I saw this repeated failure I did /something/ and the problem went away, so I was never able to find the underlying problem. Test xfs/182 failed again today, and I found the root cause before I did /something else/ that made it go away. Tracing indicated that the block in question was being correctly logged, the log was being flushed by sync, but the buffer was not being written back before the shutdown occurred. Tracing also indicated that log recovery was also reading the block, but then never writing it before log recovery invalidated the cache, indicating that it was not modified by log recovery. More detailed analysis of the corpse indicated that the filesystem had a uuid of "a4131074-1872-4cac-9323-2229adbcb886" but the XARM block had a uuid of "8f32f043-c3c9-e7f8-f947-4e7f989c05d3", which indicated it was a block from an older filesystem. The reason that log recovery didn't replay it was that the LSN in the XARM block was larger than the LSN of the transaction being replayed, and so the block was not overwritten by log recovery. Hence, log recovery cant blindly trust the magic number and LSN in the block - it must verify that it belongs to the filesystem being recovered before using the LSN. i.e. if the UUIDs don't match, we need to unconditionally recovery the change held in the log. This patch was first tested on a block device that was repeatedly causing xfs/182 to fail with the same failure on the same block with the same directory read corruption signature (i.e. XARM block). It did not fail, and hasn't failed since. Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers --- fs/xfs/xfs_log_recover.c | 73 ++++++++++++++++++++++++++++++++-------- 1 file changed, 59 insertions(+), 14 deletions(-) diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index dabda9521b4b..cc179878fe41 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -1970,6 +1970,13 @@ xlog_recover_do_inode_buffer( * magic number. If we don't recognise the magic number in the buffer, then * return a LSN of -1 so that the caller knows it was an unrecognised block and * so can recover the buffer. + * + * Note: we cannot rely solely on magic number matches to determine that the + * buffer has a valid LSN - we also need to verify that it belongs to this + * filesystem, so we need to extract the object's LSN and compare it to that + * which we read from the superblock. If the UUIDs don't match, then we've got a + * stale metadata block from an old filesystem instance that we need to recover + * over the top of. */ static xfs_lsn_t xlog_recover_get_buf_lsn( @@ -1980,6 +1987,8 @@ xlog_recover_get_buf_lsn( __uint16_t magic16; __uint16_t magicda; void *blk = bp->b_addr; + uuid_t *uuid; + xfs_lsn_t lsn = -1; /* v4 filesystems always recover immediately */ if (!xfs_sb_version_hascrc(&mp->m_sb)) @@ -1992,43 +2001,79 @@ xlog_recover_get_buf_lsn( case XFS_ABTB_MAGIC: case XFS_ABTC_MAGIC: case XFS_IBT_CRC_MAGIC: - case XFS_IBT_MAGIC: - return be64_to_cpu( - ((struct xfs_btree_block *)blk)->bb_u.s.bb_lsn); + case XFS_IBT_MAGIC: { + struct xfs_btree_block *btb = blk; + + lsn = be64_to_cpu(btb->bb_u.s.bb_lsn); + uuid = &btb->bb_u.s.bb_uuid; + break; + } case XFS_BMAP_CRC_MAGIC: - case XFS_BMAP_MAGIC: - return be64_to_cpu( - ((struct xfs_btree_block *)blk)->bb_u.l.bb_lsn); + case XFS_BMAP_MAGIC: { + struct xfs_btree_block *btb = blk; + + lsn = be64_to_cpu(btb->bb_u.l.bb_lsn); + uuid = &btb->bb_u.l.bb_uuid; + break; + } case XFS_AGF_MAGIC: - return be64_to_cpu(((struct xfs_agf *)blk)->agf_lsn); + lsn = be64_to_cpu(((struct xfs_agf *)blk)->agf_lsn); + uuid = &((struct xfs_agf *)blk)->agf_uuid; + break; case XFS_AGFL_MAGIC: - return be64_to_cpu(((struct xfs_agfl *)blk)->agfl_lsn); + lsn = be64_to_cpu(((struct xfs_agfl *)blk)->agfl_lsn); + uuid = &((struct xfs_agfl *)blk)->agfl_uuid; + break; case XFS_AGI_MAGIC: - return be64_to_cpu(((struct xfs_agi *)blk)->agi_lsn); + lsn = be64_to_cpu(((struct xfs_agi *)blk)->agi_lsn); + uuid = &((struct xfs_agi *)blk)->agi_uuid; + break; case XFS_SYMLINK_MAGIC: - return be64_to_cpu(((struct xfs_dsymlink_hdr *)blk)->sl_lsn); + lsn = be64_to_cpu(((struct xfs_dsymlink_hdr *)blk)->sl_lsn); + uuid = &((struct xfs_dsymlink_hdr *)blk)->sl_uuid; + break; case XFS_DIR3_BLOCK_MAGIC: case XFS_DIR3_DATA_MAGIC: case XFS_DIR3_FREE_MAGIC: - return be64_to_cpu(((struct xfs_dir3_blk_hdr *)blk)->lsn); + lsn = be64_to_cpu(((struct xfs_dir3_blk_hdr *)blk)->lsn); + uuid = &((struct xfs_dir3_blk_hdr *)blk)->uuid; + break; case XFS_ATTR3_RMT_MAGIC: - return be64_to_cpu(((struct xfs_attr3_rmt_hdr *)blk)->rm_lsn); + lsn = be64_to_cpu(((struct xfs_attr3_rmt_hdr *)blk)->rm_lsn); + uuid = &((struct xfs_attr3_rmt_hdr *)blk)->rm_uuid; + break; case XFS_SB_MAGIC: - return be64_to_cpu(((struct xfs_dsb *)blk)->sb_lsn); + lsn = be64_to_cpu(((struct xfs_dsb *)blk)->sb_lsn); + uuid = &((struct xfs_dsb *)blk)->sb_uuid; + break; default: break; } + if (lsn != (xfs_lsn_t)-1) { + if (!uuid_equal(&mp->m_sb.sb_uuid, uuid)) + goto recover_immediately; + return lsn; + } + magicda = be16_to_cpu(((struct xfs_da_blkinfo *)blk)->magic); switch (magicda) { case XFS_DIR3_LEAF1_MAGIC: case XFS_DIR3_LEAFN_MAGIC: case XFS_DA3_NODE_MAGIC: - return be64_to_cpu(((struct xfs_da3_blkinfo *)blk)->lsn); + lsn = be64_to_cpu(((struct xfs_da3_blkinfo *)blk)->lsn); + uuid = &((struct xfs_da3_blkinfo *)blk)->uuid; + break; default: break; } + if (lsn != (xfs_lsn_t)-1) { + if (!uuid_equal(&mp->m_sb.sb_uuid, uuid)) + goto recover_immediately; + return lsn; + } + /* * We do individual object checks on dquot and inode buffers as they * have their own individual LSN records. Also, we could have a stale From ac570e0493815e0b41681c89cb50d66421429d27 Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Wed, 11 Sep 2013 15:27:41 -0700 Subject: [PATCH 159/523] ARM: kvm: rename cpu_reset to avoid name clash cpu_reset is already #defined in as processor.reset, so it expands here and causes problems. Cc: Signed-off-by: Olof Johansson Signed-off-by: Christoffer Dall --- arch/arm/kvm/reset.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/kvm/reset.c b/arch/arm/kvm/reset.c index 71e08baee209..c02ba4af599f 100644 --- a/arch/arm/kvm/reset.c +++ b/arch/arm/kvm/reset.c @@ -58,14 +58,14 @@ static const struct kvm_irq_level a15_vtimer_irq = { */ int kvm_reset_vcpu(struct kvm_vcpu *vcpu) { - struct kvm_regs *cpu_reset; + struct kvm_regs *reset_regs; const struct kvm_irq_level *cpu_vtimer_irq; switch (vcpu->arch.target) { case KVM_ARM_TARGET_CORTEX_A15: if (vcpu->vcpu_id > a15_max_cpu_idx) return -EINVAL; - cpu_reset = &a15_regs_reset; + reset_regs = &a15_regs_reset; vcpu->arch.midr = read_cpuid_id(); cpu_vtimer_irq = &a15_vtimer_irq; break; @@ -74,7 +74,7 @@ int kvm_reset_vcpu(struct kvm_vcpu *vcpu) } /* Reset core registers */ - memcpy(&vcpu->arch.regs, cpu_reset, sizeof(vcpu->arch.regs)); + memcpy(&vcpu->arch.regs, reset_regs, sizeof(vcpu->arch.regs)); /* Reset CP15 registers */ kvm_reset_coprocs(vcpu); From 8d16f258217f2f583af1fd57c5144aa4bbe73e48 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Fri, 20 Sep 2013 16:42:15 +0300 Subject: [PATCH 160/523] drm/i915/dp: increase i2c-over-aux retry interval on AUX DEFER There is no clear cut rules or specs for the retry interval, as there are many factors that affect overall response time. Increase the interval, and even more so on branch devices which may have limited i2c bit rates. Signed-off-by: Jani Nikula Reference: https://bugs.freedesktop.org/show_bug.cgi?id=60263 Tested-by: Nicolas Suzor Reviewed-by: Todd Previte Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_dp.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 2151d13772b8..79c14e298ba6 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -588,7 +588,18 @@ intel_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode, DRM_DEBUG_KMS("aux_ch native nack\n"); return -EREMOTEIO; case AUX_NATIVE_REPLY_DEFER: - udelay(100); + /* + * For now, just give more slack to branch devices. We + * could check the DPCD for I2C bit rate capabilities, + * and if available, adjust the interval. We could also + * be more careful with DP-to-Legacy adapters where a + * long legacy cable may force very low I2C bit rates. + */ + if (intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & + DP_DWN_STRM_PORT_PRESENT) + usleep_range(500, 600); + else + usleep_range(300, 400); continue; default: DRM_ERROR("aux_ch invalid native reply 0x%02x\n", From 1062b81598bc00e2f6620e6f3788f8f8df2f01e7 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Tue, 10 Sep 2013 11:44:30 +0200 Subject: [PATCH 161/523] drm/i915/tv: clear adjusted_mode.flags The native TV encoder has it's own flags to adjust sync modes and enabled interlaced modes which are totally irrelevant for the adjusted mode. This worked out nicely since the input modes used by both the load detect code and reported in the ->get_modes callbacks all have no flags set, and we also don't fill out any of them in the ->get_config callback. This changed with the additional sanitation done with commit 2960bc9cceecb5d556ce1c07656a6609e2f7e8b0 Author: Imre Deak Date: Tue Jul 30 13:36:32 2013 +0300 drm/i915: make user mode sync polarity setting explicit sinc now the "no flags at all" state wouldn't fit through core code any more. So fix this up again by explicitly clearing the flags in the ->compute_config callback. Aside: We have zero checking in place to make sure that the requested mode is indeed the right input mode we want for the selected TV mode. So we'll happily fall over if userspace tries to pull us. But that's definitely work for a different patch series. So just add a FIXME comment for now. Reported-by: Knut Petersen Cc: Knut Petersen Cc: Imre Deak Cc: Chris Wilson Tested-by: Knut Petersen Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_tv.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c index f2c6d7909ae2..dd6f84bf6c22 100644 --- a/drivers/gpu/drm/i915/intel_tv.c +++ b/drivers/gpu/drm/i915/intel_tv.c @@ -916,6 +916,14 @@ intel_tv_compute_config(struct intel_encoder *encoder, DRM_DEBUG_KMS("forcing bpc to 8 for TV\n"); pipe_config->pipe_bpp = 8*3; + /* TV has it's own notion of sync and other mode flags, so clear them. */ + pipe_config->adjusted_mode.flags = 0; + + /* + * FIXME: We don't check whether the input mode is actually what we want + * or whether userspace is doing something stupid. + */ + return true; } From 67c72a12254101d4e8d9b9f3a02646ba0be84a2d Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Tue, 24 Sep 2013 11:46:14 +0200 Subject: [PATCH 162/523] drm/i915: preserve pipe A quirk in i9xx_set_pipeconf MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This regression has been introduced in commit 9f11a9e4e50006b615ba94722dfc33ced89664cf Author: Daniel Vetter Date: Thu Jun 13 00:54:58 2013 +0200 drm/i915: set up PIPECONF explicitly for i9xx/vlv platforms Ville brough up the idea that this is just the pipe A quirk gone wrong. Note that after resume the bios might or might not have enabled pipe A already. We have a bit of magic to make sure that on resume we set up a decent mode for pipe A, but I fear if I just smash pipe A to always on we'd enable it in a bogus state and hang the hw. Hence the readback. v2: Clarify the logic a bit as suggested by Chris. Also amend the commit message to clarify why we don't unconditionally enable the pipe. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=66462 References: https://lkml.org/lkml/2013/8/26/238 Cc: Meelis Roos Cc: Chris Wilson Cc: Ville Syrjälä Reviewed-by: Chris Wilson [danvet: Use |= instead of = as suggested by Chris.] Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index d8a1d98693e7..e5822e79f912 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4775,6 +4775,10 @@ static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc) pipeconf = 0; + if (dev_priv->quirks & QUIRK_PIPEA_FORCE && + I915_READ(PIPECONF(intel_crtc->pipe)) & PIPECONF_ENABLE) + pipeconf |= PIPECONF_ENABLE; + if (intel_crtc->pipe == 0 && INTEL_INFO(dev)->gen < 4) { /* Enable pixel doubling when the dot clock is > 90% of the (display) * core speed. From 56be88954bdb3d77619a786bf301af01efb2b057 Mon Sep 17 00:00:00 2001 From: Jason Gunthorpe Date: Mon, 23 Sep 2013 12:14:33 -0600 Subject: [PATCH 163/523] tpm: xen-tpmfront: Fix default durations All the default durations were being set to 10 minutes which is way too long for the timeouts. Normal values for the longest duration are around 5 mins, and short duration ar around .5s. Further, these are just the default, tpm_get_timeouts will set them to values from the TPM (or throw an error). Just remove them. Acked-by: Daniel De Graaf Cc: Konrad Rzeszutek Wilk Signed-off-by: Jason Gunthorpe Signed-off-by: Konrad Rzeszutek Wilk --- drivers/char/tpm/xen-tpmfront.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen-tpmfront.c index 7a7929ba2658..6f2fe2b0ae56 100644 --- a/drivers/char/tpm/xen-tpmfront.c +++ b/drivers/char/tpm/xen-tpmfront.c @@ -210,8 +210,6 @@ static struct attribute_group vtpm_attr_grp = { .attrs = vtpm_attrs, }; -#define TPM_LONG_TIMEOUT (10 * 60 * HZ) - static const struct tpm_vendor_specific tpm_vtpm = { .status = vtpm_status, .recv = vtpm_recv, @@ -224,11 +222,6 @@ static const struct tpm_vendor_specific tpm_vtpm = { .miscdev = { .fops = &vtpm_ops, }, - .duration = { - TPM_LONG_TIMEOUT, - TPM_LONG_TIMEOUT, - TPM_LONG_TIMEOUT, - }, }; static irqreturn_t tpmif_interrupt(int dummy, void *dev_id) From bf4a7c054be1306dcee5d4f5028eb66caf714037 Mon Sep 17 00:00:00 2001 From: Jason Gunthorpe Date: Mon, 23 Sep 2013 14:54:15 -0600 Subject: [PATCH 164/523] tpm: xen-tpmfront: Remove the locality sysfs attribute Upon deeper review it was agreed to remove the driver-unique 'locality' sysfs attribute before it is present in a released kernel. The attribute was introduced in e2683957fb268c6b29316fd9e7191e13239a30a5 during the 3.12 merge window, so this patch needs to go in before 3.12 is released. The hope is to have a well defined locality API that all the other locality aware drivers can use, perhaps in 3.13. Signed-off-by: Jason Gunthorpe Signed-off-by: Konrad Rzeszutek Wilk Acked-by: Daniel De Graaf --- drivers/char/tpm/xen-tpmfront.c | 29 ----------------------------- 1 file changed, 29 deletions(-) diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen-tpmfront.c index 6f2fe2b0ae56..06189e55b4e5 100644 --- a/drivers/char/tpm/xen-tpmfront.c +++ b/drivers/char/tpm/xen-tpmfront.c @@ -142,32 +142,6 @@ static int vtpm_recv(struct tpm_chip *chip, u8 *buf, size_t count) return length; } -ssize_t tpm_show_locality(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct tpm_chip *chip = dev_get_drvdata(dev); - struct tpm_private *priv = TPM_VPRIV(chip); - u8 locality = priv->shr->locality; - - return sprintf(buf, "%d\n", locality); -} - -ssize_t tpm_store_locality(struct device *dev, struct device_attribute *attr, - const char *buf, size_t len) -{ - struct tpm_chip *chip = dev_get_drvdata(dev); - struct tpm_private *priv = TPM_VPRIV(chip); - u8 val; - - int rv = kstrtou8(buf, 0, &val); - if (rv) - return rv; - - priv->shr->locality = val; - - return len; -} - static const struct file_operations vtpm_ops = { .owner = THIS_MODULE, .llseek = no_llseek, @@ -188,8 +162,6 @@ static DEVICE_ATTR(caps, S_IRUGO, tpm_show_caps, NULL); static DEVICE_ATTR(cancel, S_IWUSR | S_IWGRP, NULL, tpm_store_cancel); static DEVICE_ATTR(durations, S_IRUGO, tpm_show_durations, NULL); static DEVICE_ATTR(timeouts, S_IRUGO, tpm_show_timeouts, NULL); -static DEVICE_ATTR(locality, S_IRUGO | S_IWUSR, tpm_show_locality, - tpm_store_locality); static struct attribute *vtpm_attrs[] = { &dev_attr_pubek.attr, @@ -202,7 +174,6 @@ static struct attribute *vtpm_attrs[] = { &dev_attr_cancel.attr, &dev_attr_durations.attr, &dev_attr_timeouts.attr, - &dev_attr_locality.attr, NULL, }; From a945928ea2709bc0e8e8165d33aed855a0110279 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Thu, 12 Sep 2013 22:29:44 -0400 Subject: [PATCH 165/523] xen: Do not enable spinlocks before jump_label_init() has executed xen_init_spinlocks() currently calls static_key_slow_inc() before jump_label_init() is invoked. When CONFIG_JUMP_LABEL is set (which usually is the case) the effect of this static_key_slow_inc() is deferred until after jump_label_init(). This is different from when CONFIG_JUMP_LABEL is not set, in which case the key is set immediately. Thus, depending on the value of config option, we may observe different behavior. In addition, when we come to __jump_label_transform() from jump_label_init(), the key (paravirt_ticketlocks_enabled) is already enabled. On processors where ideal_nop is not the same as default_nop this will cause a BUG() since it is expected that before a key is enabled the latter is replaced by the former during initialization. To address this problem we need to move static_key_slow_inc(¶virt_ticketlocks_enabled) so that it is called after jump_label_init(). We also need to make sure that this is done before other cpus start to boot. early_initcall appears to be a good place to do so. (Note that we cannot move whole xen_init_spinlocks() there since pv_lock_ops need to be set before alternative_instructions() runs.) Signed-off-by: Konrad Rzeszutek Wilk [v2: Added extra comments in the code] Signed-off-by: Boris Ostrovsky Signed-off-by: Konrad Rzeszutek Wilk Reviewed-by: Steven Rostedt --- arch/x86/xen/spinlock.c | 26 ++++++++++++++++++++++++-- 1 file changed, 24 insertions(+), 2 deletions(-) diff --git a/arch/x86/xen/spinlock.c b/arch/x86/xen/spinlock.c index 253f63fceea1..be6b86078957 100644 --- a/arch/x86/xen/spinlock.c +++ b/arch/x86/xen/spinlock.c @@ -259,6 +259,14 @@ void xen_uninit_lock_cpu(int cpu) } +/* + * Our init of PV spinlocks is split in two init functions due to us + * using paravirt patching and jump labels patching and having to do + * all of this before SMP code is invoked. + * + * The paravirt patching needs to be done _before_ the alternative asm code + * is started, otherwise we would not patch the core kernel code. + */ void __init xen_init_spinlocks(void) { @@ -267,12 +275,26 @@ void __init xen_init_spinlocks(void) return; } - static_key_slow_inc(¶virt_ticketlocks_enabled); - pv_lock_ops.lock_spinning = PV_CALLEE_SAVE(xen_lock_spinning); pv_lock_ops.unlock_kick = xen_unlock_kick; } +/* + * While the jump_label init code needs to happend _after_ the jump labels are + * enabled and before SMP is started. Hence we use pre-SMP initcall level + * init. We cannot do it in xen_init_spinlocks as that is done before + * jump labels are activated. + */ +static __init int xen_init_spinlocks_jump(void) +{ + if (!xen_pvspin) + return 0; + + static_key_slow_inc(¶virt_ticketlocks_enabled); + return 0; +} +early_initcall(xen_init_spinlocks_jump); + static __init int xen_parse_nopvspin(char *arg) { xen_pvspin = false; From 24f69373e212d4356268fbb1d01c5735423c300d Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Thu, 19 Sep 2013 17:14:53 +0100 Subject: [PATCH 166/523] xen/balloon: don't alloc page while non-preemptible get_balloon_scratch_page() disables preemption so we cannot call alloc_page() in between get/put_balloon_scratch_page(). Shuffle bits around in decrease_reservation() to avoid this. Signed-off-by: David Vrabel Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/balloon.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index a50c6e3a7cc4..b232908a6192 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -398,8 +398,6 @@ static enum bp_state decrease_reservation(unsigned long nr_pages, gfp_t gfp) if (nr_pages > ARRAY_SIZE(frame_list)) nr_pages = ARRAY_SIZE(frame_list); - scratch_page = get_balloon_scratch_page(); - for (i = 0; i < nr_pages; i++) { page = alloc_page(gfp); if (page == NULL) { @@ -413,6 +411,12 @@ static enum bp_state decrease_reservation(unsigned long nr_pages, gfp_t gfp) scrub_page(page); + /* + * Ballooned out frames are effectively replaced with + * a scratch frame. Ensure direct mappings and the + * p2m are consistent. + */ + scratch_page = get_balloon_scratch_page(); #ifdef CONFIG_XEN_HAVE_PVMMU if (xen_pv_domain() && !PageHighMem(page)) { ret = HYPERVISOR_update_va_mapping( @@ -422,24 +426,19 @@ static enum bp_state decrease_reservation(unsigned long nr_pages, gfp_t gfp) BUG_ON(ret); } #endif - } - - /* Ensure that ballooned highmem pages don't have kmaps. */ - kmap_flush_unused(); - flush_tlb_all(); - - /* No more mappings: invalidate P2M and add to balloon. */ - for (i = 0; i < nr_pages; i++) { - pfn = mfn_to_pfn(frame_list[i]); if (!xen_feature(XENFEAT_auto_translated_physmap)) { unsigned long p; p = page_to_pfn(scratch_page); __set_phys_to_machine(pfn, pfn_to_mfn(p)); } + put_balloon_scratch_page(); + balloon_append(pfn_to_page(pfn)); } - put_balloon_scratch_page(); + /* Ensure that ballooned highmem pages don't have kmaps. */ + kmap_flush_unused(); + flush_tlb_all(); set_xen_guest_handle(reservation.extent_start, frame_list); reservation.nr_extents = nr_pages; From 2f6cf0de0281d210061ce976f2d42d246adc75bb Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Mon, 23 Sep 2013 23:17:26 -0700 Subject: [PATCH 167/523] block: Fix bio_copy_data() The memcpy() in bio_copy_data() was using the wrong offset vars, leading to data corruption in weird unusual setups. Signed-off-by: Kent Overstreet Cc: Jens Axboe Cc: linux-stable # >= v3.9 Signed-off-by: Linus Torvalds --- fs/bio.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/bio.c b/fs/bio.c index b3b20ed9510e..ea5035da4d9a 100644 --- a/fs/bio.c +++ b/fs/bio.c @@ -917,8 +917,8 @@ void bio_copy_data(struct bio *dst, struct bio *src) src_p = kmap_atomic(src_bv->bv_page); dst_p = kmap_atomic(dst_bv->bv_page); - memcpy(dst_p + dst_bv->bv_offset, - src_p + src_bv->bv_offset, + memcpy(dst_p + dst_offset, + src_p + src_offset, bytes); kunmap_atomic(dst_p); From 6d9d21e35fbfa2934339e96934f862d118abac23 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Mon, 23 Sep 2013 23:17:27 -0700 Subject: [PATCH 168/523] bcache: Fix a dumb journal discard bug That switch statement was obviously wrong, leading to some sort of weird spinning on rare occasion with discards enabled... Signed-off-by: Kent Overstreet Cc: linux-stable # >= v3.10 Signed-off-by: Linus Torvalds --- drivers/md/bcache/journal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c index ba95ab84b2be..c0017ca32b76 100644 --- a/drivers/md/bcache/journal.c +++ b/drivers/md/bcache/journal.c @@ -428,7 +428,7 @@ static void do_journal_discard(struct cache *ca) return; } - switch (atomic_read(&ja->discard_in_flight) == DISCARD_IN_FLIGHT) { + switch (atomic_read(&ja->discard_in_flight)) { case DISCARD_IN_FLIGHT: return; From aee6f1cfff3ce240eb4b43b41ca466b907acbd2e Mon Sep 17 00:00:00 2001 From: Gabriel de Perthuis Date: Mon, 23 Sep 2013 23:17:28 -0700 Subject: [PATCH 169/523] bcache: Strip endline when writing the label through sysfs sysfs attributes with unusual characters have crappy failure modes in Squeeze (udev 164); later versions of udev are unaffected. This should make these characters more unusual. Signed-off-by: Gabriel de Perthuis Signed-off-by: Kent Overstreet Cc: linux-stable # >= v3.10 Signed-off-by: Linus Torvalds --- drivers/md/bcache/sysfs.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c index 4fe6ab2fbe2e..924dcfdae111 100644 --- a/drivers/md/bcache/sysfs.c +++ b/drivers/md/bcache/sysfs.c @@ -223,8 +223,13 @@ STORE(__cached_dev) } if (attr == &sysfs_label) { - /* note: endlines are preserved */ - memcpy(dc->sb.label, buf, SB_LABEL_SIZE); + if (size > SB_LABEL_SIZE) + return -EINVAL; + memcpy(dc->sb.label, buf, size); + if (size < SB_LABEL_SIZE) + dc->sb.label[size] = '\0'; + if (size && dc->sb.label[size - 1] == '\n') + dc->sb.label[size - 1] = '\0'; bch_write_bdev_super(dc, NULL); if (dc->disk.c) { memcpy(dc->disk.c->uuids[dc->disk.id].label, From c426c4fd46f709ade2bddd51c5738729c7ae1db5 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Mon, 23 Sep 2013 23:17:29 -0700 Subject: [PATCH 170/523] bcache: Fix for when no journal entries are found The journal replay code didn't handle this case, causing it to go into an infinite loop... Signed-off-by: Kent Overstreet Cc: linux-stable # >= v3.10 Signed-off-by: Linus Torvalds --- drivers/md/bcache/journal.c | 30 ++++++++++++++++++------------ 1 file changed, 18 insertions(+), 12 deletions(-) diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c index c0017ca32b76..f5203dfc4cfe 100644 --- a/drivers/md/bcache/journal.c +++ b/drivers/md/bcache/journal.c @@ -153,7 +153,8 @@ int bch_journal_read(struct cache_set *c, struct list_head *list, bitmap_zero(bitmap, SB_JOURNAL_BUCKETS); pr_debug("%u journal buckets", ca->sb.njournal_buckets); - /* Read journal buckets ordered by golden ratio hash to quickly + /* + * Read journal buckets ordered by golden ratio hash to quickly * find a sequence of buckets with valid journal entries */ for (i = 0; i < ca->sb.njournal_buckets; i++) { @@ -166,18 +167,20 @@ int bch_journal_read(struct cache_set *c, struct list_head *list, goto bsearch; } - /* If that fails, check all the buckets we haven't checked + /* + * If that fails, check all the buckets we haven't checked * already */ pr_debug("falling back to linear search"); - for (l = 0; l < ca->sb.njournal_buckets; l++) { - if (test_bit(l, bitmap)) - continue; - + for (l = find_first_zero_bit(bitmap, ca->sb.njournal_buckets); + l < ca->sb.njournal_buckets; + l = find_next_zero_bit(bitmap, ca->sb.njournal_buckets, l + 1)) if (read_bucket(l)) goto bsearch; - } + + if (list_empty(list)) + continue; bsearch: /* Binary search */ m = r = find_next_bit(bitmap, ca->sb.njournal_buckets, l + 1); @@ -197,10 +200,12 @@ bsearch: r = m; } - /* Read buckets in reverse order until we stop finding more + /* + * Read buckets in reverse order until we stop finding more * journal entries */ - pr_debug("finishing up"); + pr_debug("finishing up: m %u njournal_buckets %u", + m, ca->sb.njournal_buckets); l = m; while (1) { @@ -228,9 +233,10 @@ bsearch: } } - c->journal.seq = list_entry(list->prev, - struct journal_replay, - list)->j.seq; + if (!list_empty(list)) + c->journal.seq = list_entry(list->prev, + struct journal_replay, + list)->j.seq; return 0; #undef read_bucket From 61cbd250f867f98bb4738000afc6002d6f2b14bd Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Mon, 23 Sep 2013 23:17:30 -0700 Subject: [PATCH 171/523] bcache: Correct printf()-style format length modifier MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix drivers/md/bcache/btree.c: In function ‘bch_btree_node_read’: drivers/md/bcache/btree.c:259: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 3 has type ‘size_t’ Signed-off-by: Geert Uytterhoeven Signed-off-by: Kent Overstreet Signed-off-by: Linus Torvalds --- drivers/md/bcache/btree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c index f9764e61978b..8fad8402fb2e 100644 --- a/drivers/md/bcache/btree.c +++ b/drivers/md/bcache/btree.c @@ -255,7 +255,7 @@ void bch_btree_node_read(struct btree *b) return; err: - bch_cache_set_error(b->c, "io error reading bucket %lu", + bch_cache_set_error(b->c, "io error reading bucket %zu", PTR_BUCKET_NR(b->c, &b->key, 0)); } From c2a4f3183a1248f615a695fbd8905da55ad11bba Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Mon, 23 Sep 2013 23:17:31 -0700 Subject: [PATCH 172/523] bcache: Fix a writeback performance regression Background writeback works by scanning the btree for dirty data and adding those keys into a fixed size buffer, then for each dirty key in the keybuf writing it to the backing device. When read_dirty() finishes and it's time to scan for more dirty data, we need to wait for the outstanding writeback IO to finish - they still take up slots in the keybuf (so that foreground writes can check for them to avoid races) - without that wait, we'll continually rescan when we'll be able to add at most a key or two to the keybuf, and that takes locks that starves foreground IO. Doh. Signed-off-by: Kent Overstreet Cc: linux-stable # >= v3.10 Signed-off-by: Linus Torvalds --- drivers/md/bcache/bcache.h | 7 +++--- drivers/md/bcache/util.c | 11 ++++++++- drivers/md/bcache/util.h | 12 +++++++--- drivers/md/bcache/writeback.c | 43 +++++++++++++++++------------------ 4 files changed, 43 insertions(+), 30 deletions(-) diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h index b39f6f0b45f2..0f12382aa35d 100644 --- a/drivers/md/bcache/bcache.h +++ b/drivers/md/bcache/bcache.h @@ -498,7 +498,7 @@ struct cached_dev { */ atomic_t has_dirty; - struct ratelimit writeback_rate; + struct bch_ratelimit writeback_rate; struct delayed_work writeback_rate_update; /* @@ -507,10 +507,9 @@ struct cached_dev { */ sector_t last_read; - /* Number of writeback bios in flight */ - atomic_t in_flight; + /* Limit number of writeback bios in flight */ + struct semaphore in_flight; struct closure_with_timer writeback; - struct closure_waitlist writeback_wait; struct keybuf writeback_keys; diff --git a/drivers/md/bcache/util.c b/drivers/md/bcache/util.c index 98eb81159a22..420dad545c7d 100644 --- a/drivers/md/bcache/util.c +++ b/drivers/md/bcache/util.c @@ -190,7 +190,16 @@ void bch_time_stats_update(struct time_stats *stats, uint64_t start_time) stats->last = now ?: 1; } -unsigned bch_next_delay(struct ratelimit *d, uint64_t done) +/** + * bch_next_delay() - increment @d by the amount of work done, and return how + * long to delay until the next time to do some work. + * + * @d - the struct bch_ratelimit to update + * @done - the amount of work done, in arbitrary units + * + * Returns the amount of time to delay by, in jiffies + */ +uint64_t bch_next_delay(struct bch_ratelimit *d, uint64_t done) { uint64_t now = local_clock(); diff --git a/drivers/md/bcache/util.h b/drivers/md/bcache/util.h index 1ae2a73ad85f..ea345c6896f4 100644 --- a/drivers/md/bcache/util.h +++ b/drivers/md/bcache/util.h @@ -450,17 +450,23 @@ read_attribute(name ## _last_ ## frequency_units) (ewma) >> factor; \ }) -struct ratelimit { +struct bch_ratelimit { + /* Next time we want to do some work, in nanoseconds */ uint64_t next; + + /* + * Rate at which we want to do work, in units per nanosecond + * The units here correspond to the units passed to bch_next_delay() + */ unsigned rate; }; -static inline void ratelimit_reset(struct ratelimit *d) +static inline void bch_ratelimit_reset(struct bch_ratelimit *d) { d->next = local_clock(); } -unsigned bch_next_delay(struct ratelimit *d, uint64_t done); +uint64_t bch_next_delay(struct bch_ratelimit *d, uint64_t done); #define __DIV_SAFE(n, d, zero) \ ({ \ diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c index 22cbff551628..27ac51934822 100644 --- a/drivers/md/bcache/writeback.c +++ b/drivers/md/bcache/writeback.c @@ -94,11 +94,15 @@ static void update_writeback_rate(struct work_struct *work) static unsigned writeback_delay(struct cached_dev *dc, unsigned sectors) { + uint64_t ret; + if (atomic_read(&dc->disk.detaching) || !dc->writeback_percent) return 0; - return bch_next_delay(&dc->writeback_rate, sectors * 10000000ULL); + ret = bch_next_delay(&dc->writeback_rate, sectors * 10000000ULL); + + return min_t(uint64_t, ret, HZ); } /* Background writeback */ @@ -208,7 +212,7 @@ normal_refill: up_write(&dc->writeback_lock); - ratelimit_reset(&dc->writeback_rate); + bch_ratelimit_reset(&dc->writeback_rate); /* Punt to workqueue only so we don't recurse and blow the stack */ continue_at(cl, read_dirty, dirty_wq); @@ -318,9 +322,7 @@ static void write_dirty_finish(struct closure *cl) } bch_keybuf_del(&dc->writeback_keys, w); - atomic_dec_bug(&dc->in_flight); - - closure_wake_up(&dc->writeback_wait); + up(&dc->in_flight); closure_return_with_destructor(cl, dirty_io_destructor); } @@ -349,7 +351,7 @@ static void write_dirty(struct closure *cl) closure_bio_submit(&io->bio, cl, &io->dc->disk); - continue_at(cl, write_dirty_finish, dirty_wq); + continue_at(cl, write_dirty_finish, system_wq); } static void read_dirty_endio(struct bio *bio, int error) @@ -369,7 +371,7 @@ static void read_dirty_submit(struct closure *cl) closure_bio_submit(&io->bio, cl, &io->dc->disk); - continue_at(cl, write_dirty, dirty_wq); + continue_at(cl, write_dirty, system_wq); } static void read_dirty(struct closure *cl) @@ -394,12 +396,9 @@ static void read_dirty(struct closure *cl) if (delay > 0 && (KEY_START(&w->key) != dc->last_read || - jiffies_to_msecs(delay) > 50)) { - w->private = NULL; - - closure_delay(&dc->writeback, delay); - continue_at(cl, read_dirty, dirty_wq); - } + jiffies_to_msecs(delay) > 50)) + while (delay) + delay = schedule_timeout(delay); dc->last_read = KEY_OFFSET(&w->key); @@ -424,15 +423,10 @@ static void read_dirty(struct closure *cl) trace_bcache_writeback(&w->key); - closure_call(&io->cl, read_dirty_submit, NULL, &dc->disk.cl); + down(&dc->in_flight); + closure_call(&io->cl, read_dirty_submit, NULL, cl); delay = writeback_delay(dc, KEY_SIZE(&w->key)); - - atomic_inc(&dc->in_flight); - - if (!closure_wait_event(&dc->writeback_wait, cl, - atomic_read(&dc->in_flight) < 64)) - continue_at(cl, read_dirty, dirty_wq); } if (0) { @@ -442,7 +436,11 @@ err: bch_keybuf_del(&dc->writeback_keys, w); } - refill_dirty(cl); + /* + * Wait for outstanding writeback IOs to finish (and keybuf slots to be + * freed) before refilling again + */ + continue_at(cl, refill_dirty, dirty_wq); } /* Init */ @@ -484,6 +482,7 @@ void bch_sectors_dirty_init(struct cached_dev *dc) void bch_cached_dev_writeback_init(struct cached_dev *dc) { + sema_init(&dc->in_flight, 64); closure_init_unlocked(&dc->writeback); init_rwsem(&dc->writeback_lock); @@ -513,7 +512,7 @@ void bch_writeback_exit(void) int __init bch_writeback_init(void) { - dirty_wq = create_singlethread_workqueue("bcache_writeback"); + dirty_wq = create_workqueue("bcache_writeback"); if (!dirty_wq) return -ENOMEM; From 1394d6761b6e9e15ee7c632a6d48791188727b40 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Mon, 23 Sep 2013 23:17:32 -0700 Subject: [PATCH 173/523] bcache: Fix a flush/fua performance bug bch_journal_meta() was missing the flush to make the journal write actually go down (instead of waiting up to journal_delay_ms)... Whoops Signed-off-by: Kent Overstreet Cc: linux-stable # >= v3.10 Signed-off-by: Linus Torvalds --- drivers/md/bcache/journal.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c index f5203dfc4cfe..8435f81e5d85 100644 --- a/drivers/md/bcache/journal.c +++ b/drivers/md/bcache/journal.c @@ -695,6 +695,7 @@ void bch_journal_meta(struct cache_set *c, struct closure *cl) if (cl) BUG_ON(!closure_wait(&w->wait, cl)); + closure_flush(&c->journal.io); __journal_try_write(c, true); } } From 79e3dab90d9f826ceca67c7890e048ac9169de49 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Mon, 23 Sep 2013 23:17:33 -0700 Subject: [PATCH 174/523] bcache: Fix a dumb CPU spinning bug in writeback schedule_timeout() != schedule_timeout_uninterruptible() Signed-off-by: Kent Overstreet Cc: linux-stable # >= v3.10 Signed-off-by: Linus Torvalds --- drivers/md/bcache/writeback.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c index 27ac51934822..ba3ee48320f2 100644 --- a/drivers/md/bcache/writeback.c +++ b/drivers/md/bcache/writeback.c @@ -397,8 +397,7 @@ static void read_dirty(struct closure *cl) if (delay > 0 && (KEY_START(&w->key) != dc->last_read || jiffies_to_msecs(delay) > 50)) - while (delay) - delay = schedule_timeout(delay); + delay = schedule_timeout_uninterruptible(delay); dc->last_read = KEY_OFFSET(&w->key); From a698e08c82dfb9771e0bac12c7337c706d729b6d Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Mon, 23 Sep 2013 23:17:34 -0700 Subject: [PATCH 175/523] bcache: Fix a shrinker deadlock GFP_NOIO means we could be getting called recursively - mca_alloc() -> mca_data_alloc() - definitely can't use mutex_lock(bucket_lock) then. Whoops. Signed-off-by: Kent Overstreet Cc: linux-stable # >= v3.10 Signed-off-by: Linus Torvalds --- drivers/md/bcache/btree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c index 8fad8402fb2e..f42fc7ed9cd6 100644 --- a/drivers/md/bcache/btree.c +++ b/drivers/md/bcache/btree.c @@ -612,7 +612,7 @@ static unsigned long bch_mca_scan(struct shrinker *shrink, return SHRINK_STOP; /* Return -1 if we can't do anything right now */ - if (sc->gfp_mask & __GFP_WAIT) + if (sc->gfp_mask & __GFP_IO) mutex_lock(&c->bucket_lock); else if (!mutex_trylock(&c->bucket_lock)) return -1; From 84786438ed17978d72eeced580ab757e4da8830b Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Mon, 23 Sep 2013 23:17:35 -0700 Subject: [PATCH 176/523] bcache: Fix for handling overlapping extents when reading in a btree node btree_sort_fixup() was overly clever, because it was trying to avoid pulling a key off the btree iterator in more than one place. This led to a really obscure bug where we'd break early from the loop in btree_sort_fixup() if the current key overlapped with keys in more than one older set, and the next key it overlapped with was zero size. Signed-off-by: Kent Overstreet Cc: linux-stable # >= v3.10 Signed-off-by: Linus Torvalds --- drivers/md/bcache/bset.c | 39 ++++++++++++++++++++++++++++----------- 1 file changed, 28 insertions(+), 11 deletions(-) diff --git a/drivers/md/bcache/bset.c b/drivers/md/bcache/bset.c index 8010eed06a51..22d1ae72c282 100644 --- a/drivers/md/bcache/bset.c +++ b/drivers/md/bcache/bset.c @@ -926,28 +926,45 @@ struct bkey *bch_next_recurse_key(struct btree *b, struct bkey *search) /* Mergesort */ +static void sort_key_next(struct btree_iter *iter, + struct btree_iter_set *i) +{ + i->k = bkey_next(i->k); + + if (i->k == i->end) + *i = iter->data[--iter->used]; +} + static void btree_sort_fixup(struct btree_iter *iter) { while (iter->used > 1) { struct btree_iter_set *top = iter->data, *i = top + 1; - struct bkey *k; if (iter->used > 2 && btree_iter_cmp(i[0], i[1])) i++; - for (k = i->k; - k != i->end && bkey_cmp(top->k, &START_KEY(k)) > 0; - k = bkey_next(k)) - if (top->k > i->k) - __bch_cut_front(top->k, k); - else if (KEY_SIZE(k)) - bch_cut_back(&START_KEY(k), top->k); - - if (top->k < i->k || k == i->k) + if (bkey_cmp(top->k, &START_KEY(i->k)) <= 0) break; - heap_sift(iter, i - top, btree_iter_cmp); + if (!KEY_SIZE(i->k)) { + sort_key_next(iter, i); + heap_sift(iter, i - top, btree_iter_cmp); + continue; + } + + if (top->k > i->k) { + if (bkey_cmp(top->k, i->k) >= 0) + sort_key_next(iter, i); + else + bch_cut_front(top->k, i->k); + + heap_sift(iter, i - top, btree_iter_cmp); + } else { + /* can't happen because of comparison func */ + BUG_ON(!bkey_cmp(&START_KEY(top->k), &START_KEY(i->k))); + bch_cut_back(&START_KEY(i->k), top->k); + } } } From c0f04d88e46d14de51f4baebb6efafb7d59e9f96 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Mon, 23 Sep 2013 23:17:36 -0700 Subject: [PATCH 177/523] bcache: Fix flushes in writeback mode In writeback mode, when we get a cache flush we need to make sure we issue a flush to the backing device. The code for sending down an extra flush was wrong - by cloning the bio we were probably getting flags that didn't make sense for a bare flush, and also the old code was firing for FUA bios, for which we don't need to send a flush to the backing device. This was causing data corruption somehow - the mechanism was never determined, but this patch fixes it for the users that were seeing it. Signed-off-by: Kent Overstreet Cc: linux-stable # >= v3.10 Signed-off-by: Linus Torvalds --- drivers/md/bcache/request.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index 786a1a4f74d8..71eb233b9ace 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -997,14 +997,17 @@ static void request_write(struct cached_dev *dc, struct search *s) } else { bch_writeback_add(dc); - if (s->op.flush_journal) { + if (bio->bi_rw & REQ_FLUSH) { /* Also need to send a flush to the backing device */ - s->op.cache_bio = bio_clone_bioset(bio, GFP_NOIO, - dc->disk.bio_split); + struct bio *flush = bio_alloc_bioset(0, GFP_NOIO, + dc->disk.bio_split); - bio->bi_size = 0; - bio->bi_vcnt = 0; - closure_bio_submit(bio, cl, s->d); + flush->bi_rw = WRITE_FLUSH; + flush->bi_bdev = bio->bi_bdev; + flush->bi_end_io = request_endio; + flush->bi_private = cl; + + closure_bio_submit(flush, cl, s->d); } else { s->op.cache_bio = bio; } From 359e6fab6600562073162348cd4c18c5958296d8 Mon Sep 17 00:00:00 2001 From: Michal Hocko Date: Tue, 24 Sep 2013 15:27:29 -0700 Subject: [PATCH 178/523] watchdog: update watchdog attributes atomically proc_dowatchdog doesn't synchronize multiple callers which might lead to confusion when two parallel callers might confuse watchdog_enable_all_cpus resp watchdog_disable_all_cpus (eg watchdog gets enabled even if watchdog_thresh was set to 0 already). This patch adds a local mutex which synchronizes callers to the sysctl handler. Signed-off-by: Michal Hocko Cc: Frederic Weisbecker Acked-by: Don Zickus Cc: Thomas Gleixner Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/watchdog.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/kernel/watchdog.c b/kernel/watchdog.c index 51c4f34d258e..ced7d0609931 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -520,13 +520,15 @@ int proc_dowatchdog(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { int err, old_thresh, old_enabled; + static DEFINE_MUTEX(watchdog_proc_mutex); + mutex_lock(&watchdog_proc_mutex); old_thresh = ACCESS_ONCE(watchdog_thresh); old_enabled = ACCESS_ONCE(watchdog_user_enabled); err = proc_dointvec_minmax(table, write, buffer, lenp, ppos); if (err || !write) - return err; + goto out; set_sample_period(); /* @@ -544,7 +546,8 @@ int proc_dowatchdog(struct ctl_table *table, int write, watchdog_thresh = old_thresh; watchdog_user_enabled = old_enabled; } - +out: + mutex_unlock(&watchdog_proc_mutex); return err; } #endif /* CONFIG_SYSCTL */ From 9809b18fcf6b8d8ec4d3643677345907e6b50eca Mon Sep 17 00:00:00 2001 From: Michal Hocko Date: Tue, 24 Sep 2013 15:27:30 -0700 Subject: [PATCH 179/523] watchdog: update watchdog_thresh properly watchdog_tresh controls how often nmi perf event counter checks per-cpu hrtimer_interrupts counter and blows up if the counter hasn't changed since the last check. The counter is updated by per-cpu watchdog_hrtimer hrtimer which is scheduled with 2/5 watchdog_thresh period which guarantees that hrtimer is scheduled 2 times per the main period. Both hrtimer and perf event are started together when the watchdog is enabled. So far so good. But... But what happens when watchdog_thresh is updated from sysctl handler? proc_dowatchdog will set a new sampling period and hrtimer callback (watchdog_timer_fn) will use the new value in the next round. The problem, however, is that nobody tells the perf event that the sampling period has changed so it is ticking with the period configured when it has been set up. This might result in an ear ripping dissonance between perf and hrtimer parts if the watchdog_thresh is increased. And even worse it might lead to KABOOM if the watchdog is configured to panic on such a spurious lockup. This patch fixes the issue by updating both nmi perf even counter and hrtimers if the threshold value has changed. The nmi one is disabled and then reinitialized from scratch. This has an unpleasant side effect that the allocation of the new event might fail theoretically so the hard lockup detector would be disabled for such cpus. On the other hand such a memory allocation failure is very unlikely because the original event is deallocated right before. It would be much nicer if we just changed perf event period but there doesn't seem to be any API to do that right now. It is also unfortunate that perf_event_alloc uses GFP_KERNEL allocation unconditionally so we cannot use on_each_cpu() and do the same thing from the per-cpu context. The update from the current CPU should be safe because perf_event_disable removes the event atomically before it clears the per-cpu watchdog_ev so it cannot change anything under running handler feet. The hrtimer is simply restarted (thanks to Don Zickus who has pointed this out) if it is queued because we cannot rely it will fire&adopt to the new sampling period before a new nmi event triggers (when the treshold is decreased). [akpm@linux-foundation.org: the UP version of __smp_call_function_single ended up in the wrong place] Signed-off-by: Michal Hocko Acked-by: Don Zickus Cc: Frederic Weisbecker Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Fabio Estevam Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/smp.h | 6 +++++ kernel/watchdog.c | 53 ++++++++++++++++++++++++++++++++++++++++++--- 2 files changed, 56 insertions(+), 3 deletions(-) diff --git a/include/linux/smp.h b/include/linux/smp.h index cfb7ca094b38..731f5237d5f4 100644 --- a/include/linux/smp.h +++ b/include/linux/smp.h @@ -155,6 +155,12 @@ smp_call_function_any(const struct cpumask *mask, smp_call_func_t func, static inline void kick_all_cpus_sync(void) { } +static inline void __smp_call_function_single(int cpuid, + struct call_single_data *data, int wait) +{ + on_each_cpu(data->func, data->info, wait); +} + #endif /* !SMP */ /* diff --git a/kernel/watchdog.c b/kernel/watchdog.c index ced7d0609931..4431610f049a 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -486,7 +486,52 @@ static struct smp_hotplug_thread watchdog_threads = { .unpark = watchdog_enable, }; -static int watchdog_enable_all_cpus(void) +static void restart_watchdog_hrtimer(void *info) +{ + struct hrtimer *hrtimer = &__raw_get_cpu_var(watchdog_hrtimer); + int ret; + + /* + * No need to cancel and restart hrtimer if it is currently executing + * because it will reprogram itself with the new period now. + * We should never see it unqueued here because we are running per-cpu + * with interrupts disabled. + */ + ret = hrtimer_try_to_cancel(hrtimer); + if (ret == 1) + hrtimer_start(hrtimer, ns_to_ktime(sample_period), + HRTIMER_MODE_REL_PINNED); +} + +static void update_timers(int cpu) +{ + struct call_single_data data = {.func = restart_watchdog_hrtimer}; + /* + * Make sure that perf event counter will adopt to a new + * sampling period. Updating the sampling period directly would + * be much nicer but we do not have an API for that now so + * let's use a big hammer. + * Hrtimer will adopt the new period on the next tick but this + * might be late already so we have to restart the timer as well. + */ + watchdog_nmi_disable(cpu); + __smp_call_function_single(cpu, &data, 1); + watchdog_nmi_enable(cpu); +} + +static void update_timers_all_cpus(void) +{ + int cpu; + + get_online_cpus(); + preempt_disable(); + for_each_online_cpu(cpu) + update_timers(cpu); + preempt_enable(); + put_online_cpus(); +} + +static int watchdog_enable_all_cpus(bool sample_period_changed) { int err = 0; @@ -496,6 +541,8 @@ static int watchdog_enable_all_cpus(void) pr_err("Failed to create watchdog threads, disabled\n"); else watchdog_running = 1; + } else if (sample_period_changed) { + update_timers_all_cpus(); } return err; @@ -537,7 +584,7 @@ int proc_dowatchdog(struct ctl_table *table, int write, * watchdog_*_all_cpus() function takes care of this. */ if (watchdog_user_enabled && watchdog_thresh) - err = watchdog_enable_all_cpus(); + err = watchdog_enable_all_cpus(old_thresh != watchdog_thresh); else watchdog_disable_all_cpus(); @@ -557,5 +604,5 @@ void __init lockup_detector_init(void) set_sample_period(); if (watchdog_user_enabled) - watchdog_enable_all_cpus(); + watchdog_enable_all_cpus(false); } From 99d7a8824a15cb6da046947e9b5a2335d52fbeb7 Mon Sep 17 00:00:00 2001 From: Goldwyn Rodrigues Date: Tue, 24 Sep 2013 15:27:32 -0700 Subject: [PATCH 180/523] fs/ocfs2/super.c: use a bigger nodestr in ocfs2_dismount_volume While printing 32-bit node numbers, an 8-byte string is not enough. Increase the size of the string to 12 chars. This got left out in commit 49fa8140e487 ("fs/ocfs2/super.c: Use bigger nodestr to accomodate 32-bit node numbers"). Signed-off-by: Goldwyn Rodrigues Cc: Joel Becker Cc: Mark Fasheh Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ocfs2/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index 121da2dc3be8..d4e81e4a9b04 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -1924,7 +1924,7 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) { int tmp, hangup_needed = 0; struct ocfs2_super *osb = NULL; - char nodestr[8]; + char nodestr[12]; trace_ocfs2_dismount_volume(sb); From 20ba27f52eded4d14e309ac57971c9c83dec46e4 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Tue, 24 Sep 2013 15:27:33 -0700 Subject: [PATCH 181/523] revert "memcg, vmscan: do not fall into reclaim-all pass too quickly" Revert commit e975de998b96 ("memcg, vmscan: do not fall into reclaim-all pass too quickly") I merged this prematurely - Michal and Johannes still disagree about the overall design direction and the future remains unclear. Cc: Michal Hocko Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/vmscan.c | 19 ++----------------- 1 file changed, 2 insertions(+), 17 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 8ed1b775bdc9..97b0ed16749f 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -2176,11 +2176,10 @@ static inline bool should_continue_reclaim(struct zone *zone, } } -static int +static void __shrink_zone(struct zone *zone, struct scan_control *sc, bool soft_reclaim) { unsigned long nr_reclaimed, nr_scanned; - int groups_scanned = 0; do { struct mem_cgroup *root = sc->target_mem_cgroup; @@ -2198,7 +2197,6 @@ __shrink_zone(struct zone *zone, struct scan_control *sc, bool soft_reclaim) while ((memcg = mem_cgroup_iter_cond(root, memcg, &reclaim, filter))) { struct lruvec *lruvec; - groups_scanned++; lruvec = mem_cgroup_zone_lruvec(zone, memcg); shrink_lruvec(lruvec, sc); @@ -2226,8 +2224,6 @@ __shrink_zone(struct zone *zone, struct scan_control *sc, bool soft_reclaim) } while (should_continue_reclaim(zone, sc->nr_reclaimed - nr_reclaimed, sc->nr_scanned - nr_scanned, sc)); - - return groups_scanned; } @@ -2235,19 +2231,8 @@ static void shrink_zone(struct zone *zone, struct scan_control *sc) { bool do_soft_reclaim = mem_cgroup_should_soft_reclaim(sc); unsigned long nr_scanned = sc->nr_scanned; - int scanned_groups; - scanned_groups = __shrink_zone(zone, sc, do_soft_reclaim); - /* - * memcg iterator might race with other reclaimer or start from - * a incomplete tree walk so the tree walk in __shrink_zone - * might have missed groups that are above the soft limit. Try - * another loop to catch up with others. Do it just once to - * prevent from reclaim latencies when other reclaimers always - * preempt this one. - */ - if (do_soft_reclaim && !scanned_groups) - __shrink_zone(zone, sc, do_soft_reclaim); + __shrink_zone(zone, sc, do_soft_reclaim); /* * No group is over the soft limit or those that are do not have From 8f939a9f4c769500c58c31ec81ce17297388f4bf Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Tue, 24 Sep 2013 15:27:34 -0700 Subject: [PATCH 182/523] revert "memcg: track all children over limit in the root" Revert commit 1be171d60bdd ("memcg: track all children over limit in the root") I merged this prematurely - Michal and Johannes still disagree about the overall design direction and the future remains unclear. Cc: Michal Hocko Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index d5ff3ce13029..5ee0af463f2e 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -851,15 +851,9 @@ static void mem_cgroup_update_soft_limit(struct mem_cgroup *memcg) /* * Necessary to update all ancestors when hierarchy is used * because their event counter is not touched. - * We track children even outside the hierarchy for the root - * cgroup because tree walk starting at root should visit - * all cgroups and we want to prevent from pointless tree - * walk if no children is below the limit. */ while (delta && (parent = parent_mem_cgroup(parent))) atomic_add(delta, &parent->children_in_excess); - if (memcg != root_mem_cgroup && !root_mem_cgroup->use_hierarchy) - atomic_add(delta, &root_mem_cgroup->children_in_excess); spin_unlock(&memcg->soft_lock); } @@ -6112,9 +6106,6 @@ static void mem_cgroup_css_offline(struct cgroup_subsys_state *css) if (memcg->soft_contributed) { while ((memcg = parent_mem_cgroup(memcg))) atomic_dec(&memcg->children_in_excess); - - if (memcg != root_mem_cgroup && !root_mem_cgroup->use_hierarchy) - atomic_dec(&root_mem_cgroup->children_in_excess); } mem_cgroup_destroy_all_caches(memcg); vmpressure_cleanup(&memcg->vmpressure); From 3120055e869f2a208480f238680d097eec8f0e02 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Tue, 24 Sep 2013 15:27:35 -0700 Subject: [PATCH 183/523] revert "memcg, vmscan: do not attempt soft limit reclaim if it would not scan anything" Revert commit e839b6a1c8d0 ("memcg, vmscan: do not attempt soft limit reclaim if it would not scan anything") I merged this prematurely - Michal and Johannes still disagree about the overall design direction and the future remains unclear. Cc: Michal Hocko Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 6 +----- mm/vmscan.c | 4 +--- 2 files changed, 2 insertions(+), 8 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 5ee0af463f2e..5cf7726764cc 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1872,11 +1872,7 @@ enum mem_cgroup_filter_t mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg, struct mem_cgroup *root) { - struct mem_cgroup *parent; - - if (!memcg) - memcg = root_mem_cgroup; - parent = memcg; + struct mem_cgroup *parent = memcg; if (res_counter_soft_limit_excess(&memcg->res)) return VISIT; diff --git a/mm/vmscan.c b/mm/vmscan.c index 97b0ed16749f..cdd300b81485 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -142,9 +142,7 @@ static bool global_reclaim(struct scan_control *sc) static bool mem_cgroup_should_soft_reclaim(struct scan_control *sc) { - struct mem_cgroup *root = sc->target_mem_cgroup; - return !mem_cgroup_disabled() && - mem_cgroup_soft_reclaim_eligible(root, root) != SKIP_TREE; + return !mem_cgroup_disabled(); } #else static bool global_reclaim(struct scan_control *sc) From 30361e51cae7a4df3fec89f935a450a6fe6f16fa Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Tue, 24 Sep 2013 15:27:36 -0700 Subject: [PATCH 184/523] revert "memcg: track children in soft limit excess to improve soft limit" Revert commit 7d910c054be4 ("memcg: track children in soft limit excess to improve soft limit") I merged this prematurely - Michal and Johannes still disagree about the overall design direction and the future remains unclear. Cc: Michal Hocko Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 71 ------------------------------------------------- 1 file changed, 71 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 5cf7726764cc..916892c2b8e0 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -124,7 +124,6 @@ static const char * const mem_cgroup_lru_names[] = { */ enum mem_cgroup_events_target { MEM_CGROUP_TARGET_THRESH, - MEM_CGROUP_TARGET_SOFTLIMIT, MEM_CGROUP_TARGET_NUMAINFO, MEM_CGROUP_NTARGETS, }; @@ -303,22 +302,6 @@ struct mem_cgroup { atomic_t numainfo_events; atomic_t numainfo_updating; #endif - /* - * Protects soft_contributed transitions. - * See mem_cgroup_update_soft_limit - */ - spinlock_t soft_lock; - - /* - * If true then this group has increased parents' children_in_excess - * when it got over the soft limit. - * When a group falls bellow the soft limit, parents' children_in_excess - * is decreased and soft_contributed changed to false. - */ - bool soft_contributed; - - /* Number of children that are in soft limit excess */ - atomic_t children_in_excess; struct mem_cgroup_per_node *nodeinfo[0]; /* WARNING: nodeinfo must be the last member here */ @@ -806,9 +789,6 @@ static bool mem_cgroup_event_ratelimit(struct mem_cgroup *memcg, case MEM_CGROUP_TARGET_THRESH: next = val + THRESHOLDS_EVENTS_TARGET; break; - case MEM_CGROUP_TARGET_SOFTLIMIT: - next = val + SOFTLIMIT_EVENTS_TARGET; - break; case MEM_CGROUP_TARGET_NUMAINFO: next = val + NUMAINFO_EVENTS_TARGET; break; @@ -821,42 +801,6 @@ static bool mem_cgroup_event_ratelimit(struct mem_cgroup *memcg, return false; } -/* - * Called from rate-limited memcg_check_events when enough - * MEM_CGROUP_TARGET_SOFTLIMIT events are accumulated and it makes sure - * that all the parents up the hierarchy will be notified that this group - * is in excess or that it is not in excess anymore. mmecg->soft_contributed - * makes the transition a single action whenever the state flips from one to - * the other. - */ -static void mem_cgroup_update_soft_limit(struct mem_cgroup *memcg) -{ - unsigned long long excess = res_counter_soft_limit_excess(&memcg->res); - struct mem_cgroup *parent = memcg; - int delta = 0; - - spin_lock(&memcg->soft_lock); - if (excess) { - if (!memcg->soft_contributed) { - delta = 1; - memcg->soft_contributed = true; - } - } else { - if (memcg->soft_contributed) { - delta = -1; - memcg->soft_contributed = false; - } - } - - /* - * Necessary to update all ancestors when hierarchy is used - * because their event counter is not touched. - */ - while (delta && (parent = parent_mem_cgroup(parent))) - atomic_add(delta, &parent->children_in_excess); - spin_unlock(&memcg->soft_lock); -} - /* * Check events in order. * @@ -867,11 +811,8 @@ static void memcg_check_events(struct mem_cgroup *memcg, struct page *page) /* threshold event is triggered in finer grain than soft limit */ if (unlikely(mem_cgroup_event_ratelimit(memcg, MEM_CGROUP_TARGET_THRESH))) { - bool do_softlimit; bool do_numainfo __maybe_unused; - do_softlimit = mem_cgroup_event_ratelimit(memcg, - MEM_CGROUP_TARGET_SOFTLIMIT); #if MAX_NUMNODES > 1 do_numainfo = mem_cgroup_event_ratelimit(memcg, MEM_CGROUP_TARGET_NUMAINFO); @@ -879,8 +820,6 @@ static void memcg_check_events(struct mem_cgroup *memcg, struct page *page) preempt_enable(); mem_cgroup_threshold(memcg); - if (unlikely(do_softlimit)) - mem_cgroup_update_soft_limit(memcg); #if MAX_NUMNODES > 1 if (unlikely(do_numainfo)) atomic_inc(&memcg->numainfo_events); @@ -1864,9 +1803,6 @@ int mem_cgroup_select_victim_node(struct mem_cgroup *memcg) * hierarchy if * a) it is over its soft limit * b) any parent up the hierarchy is over its soft limit - * - * If the given group doesn't have any children over the limit then it - * doesn't make any sense to iterate its subtree. */ enum mem_cgroup_filter_t mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg, @@ -1888,8 +1824,6 @@ mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg, break; } - if (!atomic_read(&memcg->children_in_excess)) - return SKIP_TREE; return SKIP; } @@ -6021,7 +5955,6 @@ mem_cgroup_css_alloc(struct cgroup_subsys_state *parent_css) mutex_init(&memcg->thresholds_lock); spin_lock_init(&memcg->move_lock); vmpressure_init(&memcg->vmpressure); - spin_lock_init(&memcg->soft_lock); return &memcg->css; @@ -6099,10 +6032,6 @@ static void mem_cgroup_css_offline(struct cgroup_subsys_state *css) mem_cgroup_invalidate_reclaim_iterators(memcg); mem_cgroup_reparent_charges(memcg); - if (memcg->soft_contributed) { - while ((memcg = parent_mem_cgroup(memcg))) - atomic_dec(&memcg->children_in_excess); - } mem_cgroup_destroy_all_caches(memcg); vmpressure_cleanup(&memcg->vmpressure); } From 694fbc0fe78518d06efa63910bf4ecee660e7852 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Tue, 24 Sep 2013 15:27:37 -0700 Subject: [PATCH 185/523] revert "memcg: enhance memcg iterator to support predicates" Revert commit de57780dc659 ("memcg: enhance memcg iterator to support predicates") I merged this prematurely - Michal and Johannes still disagree about the overall design direction and the future remains unclear. Cc: Michal Hocko Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 49 ++++---------------------- mm/memcontrol.c | 70 ++++++++------------------------------ mm/vmscan.c | 16 ++++++--- 3 files changed, 32 insertions(+), 103 deletions(-) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 60e95872da29..ef2b9bd7fafa 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -53,23 +53,6 @@ struct mem_cgroup_reclaim_cookie { unsigned int generation; }; -enum mem_cgroup_filter_t { - VISIT, /* visit current node */ - SKIP, /* skip the current node and continue traversal */ - SKIP_TREE, /* skip the whole subtree and continue traversal */ -}; - -/* - * mem_cgroup_filter_t predicate might instruct mem_cgroup_iter_cond how to - * iterate through the hierarchy tree. Each tree element is checked by the - * predicate before it is returned by the iterator. If a filter returns - * SKIP or SKIP_TREE then the iterator code continues traversal (with the - * next node down the hierarchy or the next node that doesn't belong under the - * memcg's subtree). - */ -typedef enum mem_cgroup_filter_t -(*mem_cgroup_iter_filter)(struct mem_cgroup *memcg, struct mem_cgroup *root); - #ifdef CONFIG_MEMCG /* * All "charge" functions with gfp_mask should use GFP_KERNEL or @@ -137,18 +120,9 @@ mem_cgroup_prepare_migration(struct page *page, struct page *newpage, extern void mem_cgroup_end_migration(struct mem_cgroup *memcg, struct page *oldpage, struct page *newpage, bool migration_ok); -struct mem_cgroup *mem_cgroup_iter_cond(struct mem_cgroup *root, - struct mem_cgroup *prev, - struct mem_cgroup_reclaim_cookie *reclaim, - mem_cgroup_iter_filter cond); - -static inline struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *root, - struct mem_cgroup *prev, - struct mem_cgroup_reclaim_cookie *reclaim) -{ - return mem_cgroup_iter_cond(root, prev, reclaim, NULL); -} - +struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *, + struct mem_cgroup *, + struct mem_cgroup_reclaim_cookie *); void mem_cgroup_iter_break(struct mem_cgroup *, struct mem_cgroup *); /* @@ -260,8 +234,7 @@ static inline void mem_cgroup_dec_page_stat(struct page *page, mem_cgroup_update_page_stat(page, idx, -1); } -enum mem_cgroup_filter_t -mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg, +bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg, struct mem_cgroup *root); void __mem_cgroup_count_vm_event(struct mm_struct *mm, enum vm_event_item idx); @@ -376,15 +349,6 @@ static inline void mem_cgroup_end_migration(struct mem_cgroup *memcg, struct page *oldpage, struct page *newpage, bool migration_ok) { } -static inline struct mem_cgroup * -mem_cgroup_iter_cond(struct mem_cgroup *root, - struct mem_cgroup *prev, - struct mem_cgroup_reclaim_cookie *reclaim, - mem_cgroup_iter_filter cond) -{ - /* first call must return non-NULL, second return NULL */ - return (struct mem_cgroup *)(unsigned long)!prev; -} static inline struct mem_cgroup * mem_cgroup_iter(struct mem_cgroup *root, @@ -471,11 +435,10 @@ static inline void mem_cgroup_dec_page_stat(struct page *page, } static inline -enum mem_cgroup_filter_t -mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg, +bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg, struct mem_cgroup *root) { - return VISIT; + return false; } static inline void mem_cgroup_split_huge_fixup(struct page *head) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 916892c2b8e0..65e7bec4b0f0 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -862,15 +862,6 @@ struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm) return memcg; } -static enum mem_cgroup_filter_t -mem_cgroup_filter(struct mem_cgroup *memcg, struct mem_cgroup *root, - mem_cgroup_iter_filter cond) -{ - if (!cond) - return VISIT; - return cond(memcg, root); -} - /* * Returns a next (in a pre-order walk) alive memcg (with elevated css * ref. count) or NULL if the whole root's subtree has been visited. @@ -878,7 +869,7 @@ mem_cgroup_filter(struct mem_cgroup *memcg, struct mem_cgroup *root, * helper function to be used by mem_cgroup_iter */ static struct mem_cgroup *__mem_cgroup_iter_next(struct mem_cgroup *root, - struct mem_cgroup *last_visited, mem_cgroup_iter_filter cond) + struct mem_cgroup *last_visited) { struct cgroup_subsys_state *prev_css, *next_css; @@ -896,31 +887,11 @@ skip_node: if (next_css) { struct mem_cgroup *mem = mem_cgroup_from_css(next_css); - switch (mem_cgroup_filter(mem, root, cond)) { - case SKIP: + if (css_tryget(&mem->css)) + return mem; + else { prev_css = next_css; goto skip_node; - case SKIP_TREE: - if (mem == root) - return NULL; - /* - * css_rightmost_descendant is not an optimal way to - * skip through a subtree (especially for imbalanced - * trees leaning to right) but that's what we have right - * now. More effective solution would be traversing - * right-up for first non-NULL without calling - * css_next_descendant_pre afterwards. - */ - prev_css = css_rightmost_descendant(next_css); - goto skip_node; - case VISIT: - if (css_tryget(&mem->css)) - return mem; - else { - prev_css = next_css; - goto skip_node; - } - break; } } @@ -984,7 +955,6 @@ static void mem_cgroup_iter_update(struct mem_cgroup_reclaim_iter *iter, * @root: hierarchy root * @prev: previously returned memcg, NULL on first invocation * @reclaim: cookie for shared reclaim walks, NULL for full walks - * @cond: filter for visited nodes, NULL for no filter * * Returns references to children of the hierarchy below @root, or * @root itself, or %NULL after a full round-trip. @@ -997,18 +967,15 @@ static void mem_cgroup_iter_update(struct mem_cgroup_reclaim_iter *iter, * divide up the memcgs in the hierarchy among all concurrent * reclaimers operating on the same zone and priority. */ -struct mem_cgroup *mem_cgroup_iter_cond(struct mem_cgroup *root, +struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *root, struct mem_cgroup *prev, - struct mem_cgroup_reclaim_cookie *reclaim, - mem_cgroup_iter_filter cond) + struct mem_cgroup_reclaim_cookie *reclaim) { struct mem_cgroup *memcg = NULL; struct mem_cgroup *last_visited = NULL; - if (mem_cgroup_disabled()) { - /* first call must return non-NULL, second return NULL */ - return (struct mem_cgroup *)(unsigned long)!prev; - } + if (mem_cgroup_disabled()) + return NULL; if (!root) root = root_mem_cgroup; @@ -1019,9 +986,7 @@ struct mem_cgroup *mem_cgroup_iter_cond(struct mem_cgroup *root, if (!root->use_hierarchy && root != root_mem_cgroup) { if (prev) goto out_css_put; - if (mem_cgroup_filter(root, root, cond) == VISIT) - return root; - return NULL; + return root; } rcu_read_lock(); @@ -1044,7 +1009,7 @@ struct mem_cgroup *mem_cgroup_iter_cond(struct mem_cgroup *root, last_visited = mem_cgroup_iter_load(iter, root, &seq); } - memcg = __mem_cgroup_iter_next(root, last_visited, cond); + memcg = __mem_cgroup_iter_next(root, last_visited); if (reclaim) { mem_cgroup_iter_update(iter, last_visited, memcg, seq); @@ -1055,11 +1020,7 @@ struct mem_cgroup *mem_cgroup_iter_cond(struct mem_cgroup *root, reclaim->generation = iter->generation; } - /* - * We have finished the whole tree walk or no group has been - * visited because filter told us to skip the root node. - */ - if (!memcg && (prev || (cond && !last_visited))) + if (prev && !memcg) goto out_unlock; } out_unlock: @@ -1804,14 +1765,13 @@ int mem_cgroup_select_victim_node(struct mem_cgroup *memcg) * a) it is over its soft limit * b) any parent up the hierarchy is over its soft limit */ -enum mem_cgroup_filter_t -mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg, +bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg, struct mem_cgroup *root) { struct mem_cgroup *parent = memcg; if (res_counter_soft_limit_excess(&memcg->res)) - return VISIT; + return true; /* * If any parent up to the root in the hierarchy is over its soft limit @@ -1819,12 +1779,12 @@ mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg, */ while ((parent = parent_mem_cgroup(parent))) { if (res_counter_soft_limit_excess(&parent->res)) - return VISIT; + return true; if (parent == root) break; } - return SKIP; + return false; } static DEFINE_SPINLOCK(memcg_oom_lock); diff --git a/mm/vmscan.c b/mm/vmscan.c index cdd300b81485..17a7134de4d7 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -2185,16 +2185,21 @@ __shrink_zone(struct zone *zone, struct scan_control *sc, bool soft_reclaim) .zone = zone, .priority = sc->priority, }; - struct mem_cgroup *memcg = NULL; - mem_cgroup_iter_filter filter = (soft_reclaim) ? - mem_cgroup_soft_reclaim_eligible : NULL; + struct mem_cgroup *memcg; nr_reclaimed = sc->nr_reclaimed; nr_scanned = sc->nr_scanned; - while ((memcg = mem_cgroup_iter_cond(root, memcg, &reclaim, filter))) { + memcg = mem_cgroup_iter(root, NULL, &reclaim); + do { struct lruvec *lruvec; + if (soft_reclaim && + !mem_cgroup_soft_reclaim_eligible(memcg, root)) { + memcg = mem_cgroup_iter(root, memcg, &reclaim); + continue; + } + lruvec = mem_cgroup_zone_lruvec(zone, memcg); shrink_lruvec(lruvec, sc); @@ -2214,7 +2219,8 @@ __shrink_zone(struct zone *zone, struct scan_control *sc, bool soft_reclaim) mem_cgroup_iter_break(root, memcg); break; } - } + memcg = mem_cgroup_iter(root, memcg, &reclaim); + } while (memcg); vmpressure(sc->gfp_mask, sc->target_mem_cgroup, sc->nr_scanned - nr_scanned, From b1aff7fcf86c88472b0a70f15d89d7a4adba07bb Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Tue, 24 Sep 2013 15:27:38 -0700 Subject: [PATCH 186/523] revert "vmscan, memcg: do softlimit reclaim also for targeted reclaim" Revert commit a5b7c87f9207 ("vmscan, memcg: do softlimit reclaim also for targeted reclaim") I merged this prematurely - Michal and Johannes still disagree about the overall design direction and the future remains unclear. Cc: Michal Hocko Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 6 ++---- mm/memcontrol.c | 14 +++++--------- mm/vmscan.c | 4 ++-- 3 files changed, 9 insertions(+), 15 deletions(-) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index ef2b9bd7fafa..6054c9f3a5e8 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -234,8 +234,7 @@ static inline void mem_cgroup_dec_page_stat(struct page *page, mem_cgroup_update_page_stat(page, idx, -1); } -bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg, - struct mem_cgroup *root); +bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg); void __mem_cgroup_count_vm_event(struct mm_struct *mm, enum vm_event_item idx); static inline void mem_cgroup_count_vm_event(struct mm_struct *mm, @@ -435,8 +434,7 @@ static inline void mem_cgroup_dec_page_stat(struct page *page, } static inline -bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg, - struct mem_cgroup *root) +bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg) { return false; } diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 65e7bec4b0f0..47cdc7eb1a6b 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1760,13 +1760,11 @@ int mem_cgroup_select_victim_node(struct mem_cgroup *memcg) #endif /* - * A group is eligible for the soft limit reclaim under the given root - * hierarchy if - * a) it is over its soft limit + * A group is eligible for the soft limit reclaim if + * a) it is over its soft limit * b) any parent up the hierarchy is over its soft limit */ -bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg, - struct mem_cgroup *root) +bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg) { struct mem_cgroup *parent = memcg; @@ -1774,14 +1772,12 @@ bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg, return true; /* - * If any parent up to the root in the hierarchy is over its soft limit - * then we have to obey and reclaim from this group as well. + * If any parent up the hierarchy is over its soft limit then we + * have to obey and reclaim from this group as well. */ while ((parent = parent_mem_cgroup(parent))) { if (res_counter_soft_limit_excess(&parent->res)) return true; - if (parent == root) - break; } return false; diff --git a/mm/vmscan.c b/mm/vmscan.c index 17a7134de4d7..0e081cada4ba 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -142,7 +142,7 @@ static bool global_reclaim(struct scan_control *sc) static bool mem_cgroup_should_soft_reclaim(struct scan_control *sc) { - return !mem_cgroup_disabled(); + return !mem_cgroup_disabled() && global_reclaim(sc); } #else static bool global_reclaim(struct scan_control *sc) @@ -2195,7 +2195,7 @@ __shrink_zone(struct zone *zone, struct scan_control *sc, bool soft_reclaim) struct lruvec *lruvec; if (soft_reclaim && - !mem_cgroup_soft_reclaim_eligible(memcg, root)) { + !mem_cgroup_soft_reclaim_eligible(memcg)) { memcg = mem_cgroup_iter(root, memcg, &reclaim); continue; } From bb4cc1a8b5eaf3b9e5707d7c270400b05d11a2b7 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Tue, 24 Sep 2013 15:27:40 -0700 Subject: [PATCH 187/523] revert "memcg: get rid of soft-limit tree infrastructure" Revert commit e883110aad71 ("memcg: get rid of soft-limit tree infrastructure") I merged this prematurely - Michal and Johannes still disagree about the overall design direction and the future remains unclear. Cc: Michal Hocko Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 265 +++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 263 insertions(+), 2 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 47cdc7eb1a6b..852dbec07ce6 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -39,6 +39,7 @@ #include #include #include +#include #include #include #include @@ -124,6 +125,7 @@ static const char * const mem_cgroup_lru_names[] = { */ enum mem_cgroup_events_target { MEM_CGROUP_TARGET_THRESH, + MEM_CGROUP_TARGET_SOFTLIMIT, MEM_CGROUP_TARGET_NUMAINFO, MEM_CGROUP_NTARGETS, }; @@ -159,6 +161,10 @@ struct mem_cgroup_per_zone { struct mem_cgroup_reclaim_iter reclaim_iter[DEF_PRIORITY + 1]; + struct rb_node tree_node; /* RB tree node */ + unsigned long long usage_in_excess;/* Set to the value by which */ + /* the soft limit is exceeded*/ + bool on_tree; struct mem_cgroup *memcg; /* Back pointer, we cannot */ /* use container_of */ }; @@ -167,6 +173,26 @@ struct mem_cgroup_per_node { struct mem_cgroup_per_zone zoneinfo[MAX_NR_ZONES]; }; +/* + * Cgroups above their limits are maintained in a RB-Tree, independent of + * their hierarchy representation + */ + +struct mem_cgroup_tree_per_zone { + struct rb_root rb_root; + spinlock_t lock; +}; + +struct mem_cgroup_tree_per_node { + struct mem_cgroup_tree_per_zone rb_tree_per_zone[MAX_NR_ZONES]; +}; + +struct mem_cgroup_tree { + struct mem_cgroup_tree_per_node *rb_tree_per_node[MAX_NUMNODES]; +}; + +static struct mem_cgroup_tree soft_limit_tree __read_mostly; + struct mem_cgroup_threshold { struct eventfd_ctx *eventfd; u64 threshold; @@ -405,6 +431,7 @@ static bool move_file(void) * limit reclaim to prevent infinite loops, if they ever occur. */ #define MEM_CGROUP_MAX_RECLAIM_LOOPS 100 +#define MEM_CGROUP_MAX_SOFT_LIMIT_RECLAIM_LOOPS 2 enum charge_type { MEM_CGROUP_CHARGE_TYPE_CACHE = 0, @@ -631,6 +658,164 @@ page_cgroup_zoneinfo(struct mem_cgroup *memcg, struct page *page) return mem_cgroup_zoneinfo(memcg, nid, zid); } +static struct mem_cgroup_tree_per_zone * +soft_limit_tree_node_zone(int nid, int zid) +{ + return &soft_limit_tree.rb_tree_per_node[nid]->rb_tree_per_zone[zid]; +} + +static struct mem_cgroup_tree_per_zone * +soft_limit_tree_from_page(struct page *page) +{ + int nid = page_to_nid(page); + int zid = page_zonenum(page); + + return &soft_limit_tree.rb_tree_per_node[nid]->rb_tree_per_zone[zid]; +} + +static void +__mem_cgroup_insert_exceeded(struct mem_cgroup *memcg, + struct mem_cgroup_per_zone *mz, + struct mem_cgroup_tree_per_zone *mctz, + unsigned long long new_usage_in_excess) +{ + struct rb_node **p = &mctz->rb_root.rb_node; + struct rb_node *parent = NULL; + struct mem_cgroup_per_zone *mz_node; + + if (mz->on_tree) + return; + + mz->usage_in_excess = new_usage_in_excess; + if (!mz->usage_in_excess) + return; + while (*p) { + parent = *p; + mz_node = rb_entry(parent, struct mem_cgroup_per_zone, + tree_node); + if (mz->usage_in_excess < mz_node->usage_in_excess) + p = &(*p)->rb_left; + /* + * We can't avoid mem cgroups that are over their soft + * limit by the same amount + */ + else if (mz->usage_in_excess >= mz_node->usage_in_excess) + p = &(*p)->rb_right; + } + rb_link_node(&mz->tree_node, parent, p); + rb_insert_color(&mz->tree_node, &mctz->rb_root); + mz->on_tree = true; +} + +static void +__mem_cgroup_remove_exceeded(struct mem_cgroup *memcg, + struct mem_cgroup_per_zone *mz, + struct mem_cgroup_tree_per_zone *mctz) +{ + if (!mz->on_tree) + return; + rb_erase(&mz->tree_node, &mctz->rb_root); + mz->on_tree = false; +} + +static void +mem_cgroup_remove_exceeded(struct mem_cgroup *memcg, + struct mem_cgroup_per_zone *mz, + struct mem_cgroup_tree_per_zone *mctz) +{ + spin_lock(&mctz->lock); + __mem_cgroup_remove_exceeded(memcg, mz, mctz); + spin_unlock(&mctz->lock); +} + + +static void mem_cgroup_update_tree(struct mem_cgroup *memcg, struct page *page) +{ + unsigned long long excess; + struct mem_cgroup_per_zone *mz; + struct mem_cgroup_tree_per_zone *mctz; + int nid = page_to_nid(page); + int zid = page_zonenum(page); + mctz = soft_limit_tree_from_page(page); + + /* + * Necessary to update all ancestors when hierarchy is used. + * because their event counter is not touched. + */ + for (; memcg; memcg = parent_mem_cgroup(memcg)) { + mz = mem_cgroup_zoneinfo(memcg, nid, zid); + excess = res_counter_soft_limit_excess(&memcg->res); + /* + * We have to update the tree if mz is on RB-tree or + * mem is over its softlimit. + */ + if (excess || mz->on_tree) { + spin_lock(&mctz->lock); + /* if on-tree, remove it */ + if (mz->on_tree) + __mem_cgroup_remove_exceeded(memcg, mz, mctz); + /* + * Insert again. mz->usage_in_excess will be updated. + * If excess is 0, no tree ops. + */ + __mem_cgroup_insert_exceeded(memcg, mz, mctz, excess); + spin_unlock(&mctz->lock); + } + } +} + +static void mem_cgroup_remove_from_trees(struct mem_cgroup *memcg) +{ + int node, zone; + struct mem_cgroup_per_zone *mz; + struct mem_cgroup_tree_per_zone *mctz; + + for_each_node(node) { + for (zone = 0; zone < MAX_NR_ZONES; zone++) { + mz = mem_cgroup_zoneinfo(memcg, node, zone); + mctz = soft_limit_tree_node_zone(node, zone); + mem_cgroup_remove_exceeded(memcg, mz, mctz); + } + } +} + +static struct mem_cgroup_per_zone * +__mem_cgroup_largest_soft_limit_node(struct mem_cgroup_tree_per_zone *mctz) +{ + struct rb_node *rightmost = NULL; + struct mem_cgroup_per_zone *mz; + +retry: + mz = NULL; + rightmost = rb_last(&mctz->rb_root); + if (!rightmost) + goto done; /* Nothing to reclaim from */ + + mz = rb_entry(rightmost, struct mem_cgroup_per_zone, tree_node); + /* + * Remove the node now but someone else can add it back, + * we will to add it back at the end of reclaim to its correct + * position in the tree. + */ + __mem_cgroup_remove_exceeded(mz->memcg, mz, mctz); + if (!res_counter_soft_limit_excess(&mz->memcg->res) || + !css_tryget(&mz->memcg->css)) + goto retry; +done: + return mz; +} + +static struct mem_cgroup_per_zone * +mem_cgroup_largest_soft_limit_node(struct mem_cgroup_tree_per_zone *mctz) +{ + struct mem_cgroup_per_zone *mz; + + spin_lock(&mctz->lock); + mz = __mem_cgroup_largest_soft_limit_node(mctz); + spin_unlock(&mctz->lock); + return mz; +} + /* * Implementation Note: reading percpu statistics for memcg. * @@ -789,6 +974,9 @@ static bool mem_cgroup_event_ratelimit(struct mem_cgroup *memcg, case MEM_CGROUP_TARGET_THRESH: next = val + THRESHOLDS_EVENTS_TARGET; break; + case MEM_CGROUP_TARGET_SOFTLIMIT: + next = val + SOFTLIMIT_EVENTS_TARGET; + break; case MEM_CGROUP_TARGET_NUMAINFO: next = val + NUMAINFO_EVENTS_TARGET; break; @@ -811,8 +999,11 @@ static void memcg_check_events(struct mem_cgroup *memcg, struct page *page) /* threshold event is triggered in finer grain than soft limit */ if (unlikely(mem_cgroup_event_ratelimit(memcg, MEM_CGROUP_TARGET_THRESH))) { + bool do_softlimit; bool do_numainfo __maybe_unused; + do_softlimit = mem_cgroup_event_ratelimit(memcg, + MEM_CGROUP_TARGET_SOFTLIMIT); #if MAX_NUMNODES > 1 do_numainfo = mem_cgroup_event_ratelimit(memcg, MEM_CGROUP_TARGET_NUMAINFO); @@ -820,6 +1011,8 @@ static void memcg_check_events(struct mem_cgroup *memcg, struct page *page) preempt_enable(); mem_cgroup_threshold(memcg); + if (unlikely(do_softlimit)) + mem_cgroup_update_tree(memcg, page); #if MAX_NUMNODES > 1 if (unlikely(do_numainfo)) atomic_inc(&memcg->numainfo_events); @@ -1661,7 +1854,6 @@ static unsigned long mem_cgroup_reclaim(struct mem_cgroup *memcg, return total; } -#if MAX_NUMNODES > 1 /** * test_mem_cgroup_node_reclaimable * @memcg: the target memcg @@ -1684,6 +1876,7 @@ static bool test_mem_cgroup_node_reclaimable(struct mem_cgroup *memcg, return false; } +#if MAX_NUMNODES > 1 /* * Always updating the nodemask is not very good - even if we have an empty @@ -1751,12 +1944,51 @@ int mem_cgroup_select_victim_node(struct mem_cgroup *memcg) return node; } +/* + * Check all nodes whether it contains reclaimable pages or not. + * For quick scan, we make use of scan_nodes. This will allow us to skip + * unused nodes. But scan_nodes is lazily updated and may not cotain + * enough new information. We need to do double check. + */ +static bool mem_cgroup_reclaimable(struct mem_cgroup *memcg, bool noswap) +{ + int nid; + + /* + * quick check...making use of scan_node. + * We can skip unused nodes. + */ + if (!nodes_empty(memcg->scan_nodes)) { + for (nid = first_node(memcg->scan_nodes); + nid < MAX_NUMNODES; + nid = next_node(nid, memcg->scan_nodes)) { + + if (test_mem_cgroup_node_reclaimable(memcg, nid, noswap)) + return true; + } + } + /* + * Check rest of nodes. + */ + for_each_node_state(nid, N_MEMORY) { + if (node_isset(nid, memcg->scan_nodes)) + continue; + if (test_mem_cgroup_node_reclaimable(memcg, nid, noswap)) + return true; + } + return false; +} + #else int mem_cgroup_select_victim_node(struct mem_cgroup *memcg) { return 0; } +static bool mem_cgroup_reclaimable(struct mem_cgroup *memcg, bool noswap) +{ + return test_mem_cgroup_node_reclaimable(memcg, 0, noswap); +} #endif /* @@ -2692,7 +2924,9 @@ static void __mem_cgroup_commit_charge(struct mem_cgroup *memcg, unlock_page_cgroup(pc); /* - * "charge_statistics" updated event counter. + * "charge_statistics" updated event counter. Then, check it. + * Insert ancestor (and ancestor's ancestors), to softlimit RB-tree. + * if they exceeds softlimit. */ memcg_check_events(memcg, page); } @@ -5791,6 +6025,8 @@ static int alloc_mem_cgroup_per_zone_info(struct mem_cgroup *memcg, int node) for (zone = 0; zone < MAX_NR_ZONES; zone++) { mz = &pn->zoneinfo[zone]; lruvec_init(&mz->lruvec); + mz->usage_in_excess = 0; + mz->on_tree = false; mz->memcg = memcg; } memcg->nodeinfo[node] = pn; @@ -5846,6 +6082,7 @@ static void __mem_cgroup_free(struct mem_cgroup *memcg) int node; size_t size = memcg_size(); + mem_cgroup_remove_from_trees(memcg); free_css_id(&mem_cgroup_subsys, &memcg->css); for_each_node(node) @@ -5882,6 +6119,29 @@ struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *memcg) } EXPORT_SYMBOL(parent_mem_cgroup); +static void __init mem_cgroup_soft_limit_tree_init(void) +{ + struct mem_cgroup_tree_per_node *rtpn; + struct mem_cgroup_tree_per_zone *rtpz; + int tmp, node, zone; + + for_each_node(node) { + tmp = node; + if (!node_state(node, N_NORMAL_MEMORY)) + tmp = -1; + rtpn = kzalloc_node(sizeof(*rtpn), GFP_KERNEL, tmp); + BUG_ON(!rtpn); + + soft_limit_tree.rb_tree_per_node[node] = rtpn; + + for (zone = 0; zone < MAX_NR_ZONES; zone++) { + rtpz = &rtpn->rb_tree_per_zone[zone]; + rtpz->rb_root = RB_ROOT; + spin_lock_init(&rtpz->lock); + } + } +} + static struct cgroup_subsys_state * __ref mem_cgroup_css_alloc(struct cgroup_subsys_state *parent_css) { @@ -6662,6 +6922,7 @@ static int __init mem_cgroup_init(void) { hotcpu_notifier(memcg_cpu_hotplug_callback, 0); enable_swap_cgroup(); + mem_cgroup_soft_limit_tree_init(); memcg_stock_init(); return 0; } From 0608f43da64a1f1c42507304b5f25bc8b1227aa4 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Tue, 24 Sep 2013 15:27:41 -0700 Subject: [PATCH 188/523] revert "memcg, vmscan: integrate soft reclaim tighter with zone shrinking code" Revert commit 3b38722efd9f ("memcg, vmscan: integrate soft reclaim tighter with zone shrinking code") I merged this prematurely - Michal and Johannes still disagree about the overall design direction and the future remains unclear. Cc: Michal Hocko Cc: Johannes Weiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 10 ++- mm/memcontrol.c | 157 ++++++++++++++++++++++++++++++++----- mm/vmscan.c | 62 ++++++--------- 3 files changed, 172 insertions(+), 57 deletions(-) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 6054c9f3a5e8..ecc82b37c4cc 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -234,7 +234,9 @@ static inline void mem_cgroup_dec_page_stat(struct page *page, mem_cgroup_update_page_stat(page, idx, -1); } -bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg); +unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order, + gfp_t gfp_mask, + unsigned long *total_scanned); void __mem_cgroup_count_vm_event(struct mm_struct *mm, enum vm_event_item idx); static inline void mem_cgroup_count_vm_event(struct mm_struct *mm, @@ -434,9 +436,11 @@ static inline void mem_cgroup_dec_page_stat(struct page *page, } static inline -bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg) +unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order, + gfp_t gfp_mask, + unsigned long *total_scanned) { - return false; + return 0; } static inline void mem_cgroup_split_huge_fixup(struct page *head) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 852dbec07ce6..1c52ddbc839b 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1991,28 +1991,57 @@ static bool mem_cgroup_reclaimable(struct mem_cgroup *memcg, bool noswap) } #endif -/* - * A group is eligible for the soft limit reclaim if - * a) it is over its soft limit - * b) any parent up the hierarchy is over its soft limit - */ -bool mem_cgroup_soft_reclaim_eligible(struct mem_cgroup *memcg) +static int mem_cgroup_soft_reclaim(struct mem_cgroup *root_memcg, + struct zone *zone, + gfp_t gfp_mask, + unsigned long *total_scanned) { - struct mem_cgroup *parent = memcg; + struct mem_cgroup *victim = NULL; + int total = 0; + int loop = 0; + unsigned long excess; + unsigned long nr_scanned; + struct mem_cgroup_reclaim_cookie reclaim = { + .zone = zone, + .priority = 0, + }; - if (res_counter_soft_limit_excess(&memcg->res)) - return true; + excess = res_counter_soft_limit_excess(&root_memcg->res) >> PAGE_SHIFT; - /* - * If any parent up the hierarchy is over its soft limit then we - * have to obey and reclaim from this group as well. - */ - while ((parent = parent_mem_cgroup(parent))) { - if (res_counter_soft_limit_excess(&parent->res)) - return true; + while (1) { + victim = mem_cgroup_iter(root_memcg, victim, &reclaim); + if (!victim) { + loop++; + if (loop >= 2) { + /* + * If we have not been able to reclaim + * anything, it might because there are + * no reclaimable pages under this hierarchy + */ + if (!total) + break; + /* + * We want to do more targeted reclaim. + * excess >> 2 is not to excessive so as to + * reclaim too much, nor too less that we keep + * coming back to reclaim from this cgroup + */ + if (total >= (excess >> 2) || + (loop > MEM_CGROUP_MAX_RECLAIM_LOOPS)) + break; + } + continue; + } + if (!mem_cgroup_reclaimable(victim, false)) + continue; + total += mem_cgroup_shrink_node_zone(victim, gfp_mask, false, + zone, &nr_scanned); + *total_scanned += nr_scanned; + if (!res_counter_soft_limit_excess(&root_memcg->res)) + break; } - - return false; + mem_cgroup_iter_break(root_memcg, victim); + return total; } static DEFINE_SPINLOCK(memcg_oom_lock); @@ -4761,6 +4790,98 @@ static int mem_cgroup_resize_memsw_limit(struct mem_cgroup *memcg, return ret; } +unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order, + gfp_t gfp_mask, + unsigned long *total_scanned) +{ + unsigned long nr_reclaimed = 0; + struct mem_cgroup_per_zone *mz, *next_mz = NULL; + unsigned long reclaimed; + int loop = 0; + struct mem_cgroup_tree_per_zone *mctz; + unsigned long long excess; + unsigned long nr_scanned; + + if (order > 0) + return 0; + + mctz = soft_limit_tree_node_zone(zone_to_nid(zone), zone_idx(zone)); + /* + * This loop can run a while, specially if mem_cgroup's continuously + * keep exceeding their soft limit and putting the system under + * pressure + */ + do { + if (next_mz) + mz = next_mz; + else + mz = mem_cgroup_largest_soft_limit_node(mctz); + if (!mz) + break; + + nr_scanned = 0; + reclaimed = mem_cgroup_soft_reclaim(mz->memcg, zone, + gfp_mask, &nr_scanned); + nr_reclaimed += reclaimed; + *total_scanned += nr_scanned; + spin_lock(&mctz->lock); + + /* + * If we failed to reclaim anything from this memory cgroup + * it is time to move on to the next cgroup + */ + next_mz = NULL; + if (!reclaimed) { + do { + /* + * Loop until we find yet another one. + * + * By the time we get the soft_limit lock + * again, someone might have aded the + * group back on the RB tree. Iterate to + * make sure we get a different mem. + * mem_cgroup_largest_soft_limit_node returns + * NULL if no other cgroup is present on + * the tree + */ + next_mz = + __mem_cgroup_largest_soft_limit_node(mctz); + if (next_mz == mz) + css_put(&next_mz->memcg->css); + else /* next_mz == NULL or other memcg */ + break; + } while (1); + } + __mem_cgroup_remove_exceeded(mz->memcg, mz, mctz); + excess = res_counter_soft_limit_excess(&mz->memcg->res); + /* + * One school of thought says that we should not add + * back the node to the tree if reclaim returns 0. + * But our reclaim could return 0, simply because due + * to priority we are exposing a smaller subset of + * memory to reclaim from. Consider this as a longer + * term TODO. + */ + /* If excess == 0, no tree ops */ + __mem_cgroup_insert_exceeded(mz->memcg, mz, mctz, excess); + spin_unlock(&mctz->lock); + css_put(&mz->memcg->css); + loop++; + /* + * Could not reclaim anything and there are no more + * mem cgroups to try or we seem to be looping without + * reclaiming anything. + */ + if (!nr_reclaimed && + (next_mz == NULL || + loop > MEM_CGROUP_MAX_SOFT_LIMIT_RECLAIM_LOOPS)) + break; + } while (!nr_reclaimed); + if (next_mz) + css_put(&next_mz->memcg->css); + return nr_reclaimed; +} + /** * mem_cgroup_force_empty_list - clears LRU of a group * @memcg: group to clear diff --git a/mm/vmscan.c b/mm/vmscan.c index 0e081cada4ba..beb35778c69f 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -139,21 +139,11 @@ static bool global_reclaim(struct scan_control *sc) { return !sc->target_mem_cgroup; } - -static bool mem_cgroup_should_soft_reclaim(struct scan_control *sc) -{ - return !mem_cgroup_disabled() && global_reclaim(sc); -} #else static bool global_reclaim(struct scan_control *sc) { return true; } - -static bool mem_cgroup_should_soft_reclaim(struct scan_control *sc) -{ - return false; -} #endif unsigned long zone_reclaimable_pages(struct zone *zone) @@ -2174,8 +2164,7 @@ static inline bool should_continue_reclaim(struct zone *zone, } } -static void -__shrink_zone(struct zone *zone, struct scan_control *sc, bool soft_reclaim) +static void shrink_zone(struct zone *zone, struct scan_control *sc) { unsigned long nr_reclaimed, nr_scanned; @@ -2194,12 +2183,6 @@ __shrink_zone(struct zone *zone, struct scan_control *sc, bool soft_reclaim) do { struct lruvec *lruvec; - if (soft_reclaim && - !mem_cgroup_soft_reclaim_eligible(memcg)) { - memcg = mem_cgroup_iter(root, memcg, &reclaim); - continue; - } - lruvec = mem_cgroup_zone_lruvec(zone, memcg); shrink_lruvec(lruvec, sc); @@ -2230,24 +2213,6 @@ __shrink_zone(struct zone *zone, struct scan_control *sc, bool soft_reclaim) sc->nr_scanned - nr_scanned, sc)); } - -static void shrink_zone(struct zone *zone, struct scan_control *sc) -{ - bool do_soft_reclaim = mem_cgroup_should_soft_reclaim(sc); - unsigned long nr_scanned = sc->nr_scanned; - - __shrink_zone(zone, sc, do_soft_reclaim); - - /* - * No group is over the soft limit or those that are do not have - * pages in the zone we are reclaiming so we have to reclaim everybody - */ - if (do_soft_reclaim && (sc->nr_scanned == nr_scanned)) { - __shrink_zone(zone, sc, false); - return; - } -} - /* Returns true if compaction should go ahead for a high-order request */ static inline bool compaction_ready(struct zone *zone, struct scan_control *sc) { @@ -2309,6 +2274,8 @@ static bool shrink_zones(struct zonelist *zonelist, struct scan_control *sc) { struct zoneref *z; struct zone *zone; + unsigned long nr_soft_reclaimed; + unsigned long nr_soft_scanned; bool aborted_reclaim = false; /* @@ -2348,6 +2315,18 @@ static bool shrink_zones(struct zonelist *zonelist, struct scan_control *sc) continue; } } + /* + * This steals pages from memory cgroups over softlimit + * and returns the number of reclaimed pages and + * scanned pages. This works for global memory pressure + * and balancing, not for a memcg's limit. + */ + nr_soft_scanned = 0; + nr_soft_reclaimed = mem_cgroup_soft_limit_reclaim(zone, + sc->order, sc->gfp_mask, + &nr_soft_scanned); + sc->nr_reclaimed += nr_soft_reclaimed; + sc->nr_scanned += nr_soft_scanned; /* need some check for avoid more shrink_zone() */ } @@ -2941,6 +2920,8 @@ static unsigned long balance_pgdat(pg_data_t *pgdat, int order, { int i; int end_zone = 0; /* Inclusive. 0 = ZONE_DMA */ + unsigned long nr_soft_reclaimed; + unsigned long nr_soft_scanned; struct scan_control sc = { .gfp_mask = GFP_KERNEL, .priority = DEF_PRIORITY, @@ -3055,6 +3036,15 @@ static unsigned long balance_pgdat(pg_data_t *pgdat, int order, sc.nr_scanned = 0; + nr_soft_scanned = 0; + /* + * Call soft limit reclaim before calling shrink_zone. + */ + nr_soft_reclaimed = mem_cgroup_soft_limit_reclaim(zone, + order, sc.gfp_mask, + &nr_soft_scanned); + sc.nr_reclaimed += nr_soft_reclaimed; + /* * There should be no need to raise the scanning * priority if enough pages are already being scanned From 8ac1c8d5deba65513b6a82c35e89e73996c8e0d6 Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Tue, 24 Sep 2013 15:27:42 -0700 Subject: [PATCH 189/523] audit: fix endless wait in audit_log_start() After commit 829199197a43 ("kernel/audit.c: avoid negative sleep durations") audit emitters will block forever if userspace daemon cannot handle backlog. After the timeout the waiting loop turns into busy loop and runs until daemon dies or returns back to work. This is a minimal patch for that bug. Signed-off-by: Konstantin Khlebnikov Cc: Luiz Capitulino Cc: Richard Guy Briggs Cc: Eric Paris Cc: Chuck Anderson Cc: Dan Duval Cc: Dave Kleikamp Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/audit.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/kernel/audit.c b/kernel/audit.c index 91e53d04b6a9..7b0e23a740ce 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -1117,9 +1117,10 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, sleep_time = timeout_start + audit_backlog_wait_time - jiffies; - if ((long)sleep_time > 0) + if ((long)sleep_time > 0) { wait_for_auditd(sleep_time); - continue; + continue; + } } if (audit_rate_check() && printk_ratelimit()) printk(KERN_WARNING From e2f0b88e84eed9cf9797f0a88c8012ee0b885a6d Mon Sep 17 00:00:00 2001 From: Chuansheng Liu Date: Tue, 24 Sep 2013 15:27:43 -0700 Subject: [PATCH 190/523] kernel/reboot.c: re-enable the function of variable reboot_default Commit 1b3a5d02ee07 ("reboot: move arch/x86 reboot= handling to generic kernel") did some cleanup for reboot= command line, but it made the reboot_default inoperative. The default value of variable reboot_default should be 1, and if command line reboot= is not set, system will use the default reboot mode. [akpm@linux-foundation.org: fix comment layout] Signed-off-by: Li Fei Signed-off-by: liu chuansheng Acked-by: Robin Holt Cc: [3.11.x] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/reboot.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/kernel/reboot.c b/kernel/reboot.c index 269ed9384cc4..f813b3474646 100644 --- a/kernel/reboot.c +++ b/kernel/reboot.c @@ -32,7 +32,14 @@ EXPORT_SYMBOL(cad_pid); #endif enum reboot_mode reboot_mode DEFAULT_REBOOT_MODE; -int reboot_default; +/* + * This variable is used privately to keep track of whether or not + * reboot_type is still set to its default value (i.e., reboot= hasn't + * been set on the command line). This is needed so that we can + * suppress DMI scanning for reboot quirks. Without it, it's + * impossible to override a faulty reboot quirk without recompiling. + */ +int reboot_default = 1; int reboot_cpu; enum reboot_type reboot_type = BOOT_ACPI; int reboot_force; From 627aad1c01da6f881e7f98d71fd928ca0c316b1a Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 24 Sep 2013 15:27:44 -0700 Subject: [PATCH 191/523] cpqarray: fix info leak in ida_locked_ioctl() The pciinfo struct has a two byte hole after ->dev_fn so stack information could be leaked to the user. This was assigned CVE-2013-2147. Signed-off-by: Dan Carpenter Acked-by: Mike Miller Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/block/cpqarray.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c index 639d26b90b91..2b9440384536 100644 --- a/drivers/block/cpqarray.c +++ b/drivers/block/cpqarray.c @@ -1193,6 +1193,7 @@ out_passthru: ida_pci_info_struct pciinfo; if (!arg) return -EINVAL; + memset(&pciinfo, 0, sizeof(pciinfo)); pciinfo.bus = host->pci_dev->bus->number; pciinfo.dev_fn = host->pci_dev->devfn; pciinfo.board_id = host->board_id; From 58f09e00ae095e46ef9edfcf3a5fd9ccdfad065e Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 24 Sep 2013 15:27:45 -0700 Subject: [PATCH 192/523] cciss: fix info leak in cciss_ioctl32_passthru() The arg64 struct has a hole after ->buf_size which isn't cleared. Or if any of the calls to copy_from_user() fail then that would cause an information leak as well. This was assigned CVE-2013-2147. Signed-off-by: Dan Carpenter Acked-by: Mike Miller Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/block/cciss.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index d2d95ff5353b..edfa2515bc86 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -1189,6 +1189,7 @@ static int cciss_ioctl32_passthru(struct block_device *bdev, fmode_t mode, int err; u32 cp; + memset(&arg64, 0, sizeof(arg64)); err = 0; err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, From d1d85780dd30e137d8ff505c1c2e79eaf729853d Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Tue, 24 Sep 2013 15:27:46 -0700 Subject: [PATCH 193/523] checkpatch: make extern in .h prototypes quieter The use of extern in .h files is a bit contentious. Make the warning be emitted only when --strict is used on the command line. Signed-off-by: Joe Perches Cc: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/checkpatch.pl | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 47016c304c84..66cad506b8a2 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -3975,8 +3975,8 @@ sub string_find_replace { # check for new externs in .h files. if ($realfile =~ /\.h$/ && $line =~ /^\+\s*(extern\s+)$Type\s*$Ident\s*\(/s) { - if (WARN("AVOID_EXTERNS", - "extern prototypes should be avoided in .h files\n" . $herecurr) && + if (CHK("AVOID_EXTERNS", + "extern prototypes should be avoided in .h files\n" . $herecurr) && $fix) { $fixed[$linenr - 1] =~ s/(.*)\bextern\b\s*(.*)/$1$2/; } From 497a045d13dcd7a00f5535ded1ebb49313d4a211 Mon Sep 17 00:00:00 2001 From: Christian Daudt Date: Tue, 24 Sep 2013 15:27:47 -0700 Subject: [PATCH 194/523] MAINTAINERS: update mach-bcm related email address Update email address on mach-bcm + drivers for Broadcom mobile SoCs. Signed-off-by: Christian Daudt Cc: Olof Johansson Cc: Arnd Bergmann Cc: Stephen Warren Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- MAINTAINERS | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index e61c2e83fc2b..b2f857c7ecf6 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1812,7 +1812,8 @@ S: Supported F: drivers/net/ethernet/broadcom/bnx2x/ BROADCOM BCM281XX/BCM11XXX ARM ARCHITECTURE -M: Christian Daudt +M: Christian Daudt +L: bcm-kernel-feedback-list@broadcom.com T: git git://git.github.com/broadcom/bcm11351 S: Maintained F: arch/arm/mach-bcm/ From 06a8566bcf5cf7db9843a82cde7a33c7bf3947d9 Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Fri, 13 Sep 2013 13:13:23 +0800 Subject: [PATCH 195/523] ACPI / IPMI: Fix atomic context requirement of ipmi_msg_handler() This patch fixes the issues indicated by the test results that ipmi_msg_handler() is invoked in atomic context. BUG: scheduling while atomic: kipmi0/18933/0x10000100 Modules linked in: ipmi_si acpi_ipmi ... CPU: 3 PID: 18933 Comm: kipmi0 Tainted: G AW 3.10.0-rc7+ #2 Hardware name: QCI QSSC-S4R/QSSC-S4R, BIOS QSSC-S4R.QCI.01.00.0027.070120100606 07/01/2010 ffff8838245eea00 ffff88103fc63c98 ffffffff814c4a1e ffff88103fc63ca8 ffffffff814bfbab ffff88103fc63d28 ffffffff814c73e0 ffff88103933cbd4 0000000000000096 ffff88103fc63ce8 ffff88102f618000 ffff881035c01fd8 Call Trace: [] dump_stack+0x19/0x1b [] __schedule_bug+0x46/0x54 [] __schedule+0x83/0x59c [] __cond_resched+0x22/0x2d [] _cond_resched+0x14/0x1d [] mutex_lock+0x11/0x32 [] ? __default_send_IPI_dest_field.constprop.0+0x53/0x58 [] ipmi_msg_handler+0x23/0x166 [ipmi_si] [] deliver_response+0x55/0x5a [] handle_new_recv_msgs+0xb67/0xc65 [] ? read_tsc+0x9/0x19 [] ? _raw_spin_lock_irq+0xa/0xc [] ipmi_thread+0x5c/0x146 [ipmi_si] ... Also Tony Camuso says: We were getting occasional "Scheduling while atomic" call traces during boot on some systems. Problem was first seen on a Cisco C210 but we were able to reproduce it on a Cisco c220m3. Setting CONFIG_LOCKDEP and LOCKDEP_SUPPORT to 'y' exposed a lockdep around tx_msg_lock in acpi_ipmi.c struct acpi_ipmi_device. ================================= [ INFO: inconsistent lock state ] 2.6.32-415.el6.x86_64-debug-splck #1 --------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. ksoftirqd/3/17 [HC0[0]:SC1[1]:HE1:SE0] takes: (&ipmi_device->tx_msg_lock){+.?...}, at: [] ipmi_msg_handler+0x71/0x126 {SOFTIRQ-ON-W} state was registered at: [] __lock_acquire+0x63c/0x1570 [] lock_acquire+0xa4/0x120 [] __mutex_lock_common+0x4c/0x400 [] mutex_lock_nested+0x4a/0x60 [] acpi_ipmi_space_handler+0x11b/0x234 [] acpi_ev_address_space_dispatch+0x170/0x1be The fix implemented by this change has been tested by Tony: Tested the patch in a boot loop with lockdep debug enabled and never saw the problem in over 400 reboots. Reported-and-tested-by: Tony Camuso Signed-off-by: Lv Zheng Reviewed-by: Huang Ying Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpi_ipmi.c | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/drivers/acpi/acpi_ipmi.c b/drivers/acpi/acpi_ipmi.c index f40acef80269..a6977e12d574 100644 --- a/drivers/acpi/acpi_ipmi.c +++ b/drivers/acpi/acpi_ipmi.c @@ -39,6 +39,7 @@ #include #include #include +#include MODULE_AUTHOR("Zhao Yakui"); MODULE_DESCRIPTION("ACPI IPMI Opregion driver"); @@ -57,7 +58,7 @@ struct acpi_ipmi_device { struct list_head head; /* the IPMI request message list */ struct list_head tx_msg_list; - struct mutex tx_msg_lock; + spinlock_t tx_msg_lock; acpi_handle handle; struct pnp_dev *pnp_dev; ipmi_user_t user_interface; @@ -147,6 +148,7 @@ static void acpi_format_ipmi_msg(struct acpi_ipmi_msg *tx_msg, struct kernel_ipmi_msg *msg; struct acpi_ipmi_buffer *buffer; struct acpi_ipmi_device *device; + unsigned long flags; msg = &tx_msg->tx_message; /* @@ -177,10 +179,10 @@ static void acpi_format_ipmi_msg(struct acpi_ipmi_msg *tx_msg, /* Get the msgid */ device = tx_msg->device; - mutex_lock(&device->tx_msg_lock); + spin_lock_irqsave(&device->tx_msg_lock, flags); device->curr_msgid++; tx_msg->tx_msgid = device->curr_msgid; - mutex_unlock(&device->tx_msg_lock); + spin_unlock_irqrestore(&device->tx_msg_lock, flags); } static void acpi_format_ipmi_response(struct acpi_ipmi_msg *msg, @@ -242,6 +244,7 @@ static void ipmi_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data) int msg_found = 0; struct acpi_ipmi_msg *tx_msg; struct pnp_dev *pnp_dev = ipmi_device->pnp_dev; + unsigned long flags; if (msg->user != ipmi_device->user_interface) { dev_warn(&pnp_dev->dev, "Unexpected response is returned. " @@ -250,7 +253,7 @@ static void ipmi_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data) ipmi_free_recv_msg(msg); return; } - mutex_lock(&ipmi_device->tx_msg_lock); + spin_lock_irqsave(&ipmi_device->tx_msg_lock, flags); list_for_each_entry(tx_msg, &ipmi_device->tx_msg_list, head) { if (msg->msgid == tx_msg->tx_msgid) { msg_found = 1; @@ -258,7 +261,7 @@ static void ipmi_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data) } } - mutex_unlock(&ipmi_device->tx_msg_lock); + spin_unlock_irqrestore(&ipmi_device->tx_msg_lock, flags); if (!msg_found) { dev_warn(&pnp_dev->dev, "Unexpected response (msg id %ld) is " "returned.\n", msg->msgid); @@ -378,6 +381,7 @@ acpi_ipmi_space_handler(u32 function, acpi_physical_address address, struct acpi_ipmi_device *ipmi_device = handler_context; int err, rem_time; acpi_status status; + unsigned long flags; /* * IPMI opregion message. * IPMI message is firstly written to the BMC and system software @@ -395,9 +399,9 @@ acpi_ipmi_space_handler(u32 function, acpi_physical_address address, return AE_NO_MEMORY; acpi_format_ipmi_msg(tx_msg, address, value); - mutex_lock(&ipmi_device->tx_msg_lock); + spin_lock_irqsave(&ipmi_device->tx_msg_lock, flags); list_add_tail(&tx_msg->head, &ipmi_device->tx_msg_list); - mutex_unlock(&ipmi_device->tx_msg_lock); + spin_unlock_irqrestore(&ipmi_device->tx_msg_lock, flags); err = ipmi_request_settime(ipmi_device->user_interface, &tx_msg->addr, tx_msg->tx_msgid, @@ -413,9 +417,9 @@ acpi_ipmi_space_handler(u32 function, acpi_physical_address address, status = AE_OK; end_label: - mutex_lock(&ipmi_device->tx_msg_lock); + spin_lock_irqsave(&ipmi_device->tx_msg_lock, flags); list_del(&tx_msg->head); - mutex_unlock(&ipmi_device->tx_msg_lock); + spin_unlock_irqrestore(&ipmi_device->tx_msg_lock, flags); kfree(tx_msg); return status; } @@ -457,7 +461,7 @@ static void acpi_add_ipmi_device(struct acpi_ipmi_device *ipmi_device) INIT_LIST_HEAD(&ipmi_device->head); - mutex_init(&ipmi_device->tx_msg_lock); + spin_lock_init(&ipmi_device->tx_msg_lock); INIT_LIST_HEAD(&ipmi_device->tx_msg_list); ipmi_install_space_handler(ipmi_device); From 8a61e12e84597b5f8155ac91b44dea866ccfaac2 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Fri, 20 Sep 2013 10:43:56 -0700 Subject: [PATCH 196/523] acpi-cpufreq: skip loading acpi_cpufreq after intel_pstate If the hw supports intel_pstate and acpi_cpufreq, intel_pstate will get loaded first. acpi_cpufreq_init() will call acpi_cpufreq_early_init() and that will allocate perf data and init those perf data in ACPI core, (that will cover all CPUs). But later it will free them as cpufreq_register_driver(acpi_cpufreq) will fail as intel_pstate is already registered Use cpufreq_get_current_driver() to check if we can skip the acpi_cpufreq loading. Signed-off-by: Yinghai Lu Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/acpi-cpufreq.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index a1260b4549db..d2c3253e015e 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -986,6 +986,10 @@ static int __init acpi_cpufreq_init(void) { int ret; + /* don't keep reloading if cpufreq_driver exists */ + if (cpufreq_get_current_driver()) + return 0; + if (acpi_disabled) return 0; From 26ca8694344af4c833d22590c5b77d6b9cff0722 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Fri, 20 Sep 2013 22:37:31 +0530 Subject: [PATCH 197/523] cpufreq: check cpufreq driver is valid and cpufreq isn't disabled in cpufreq_get() cpufreq_get() can be called from external drivers which might not be aware if cpufreq driver is registered or not. And so we should actually check if cpufreq driver is registered or not and also if cpufreq is active or disabled, at the beginning of cpufreq_get(). Otherwise call to lock_policy_rwsem_read() might hit BUG_ON(!policy). Reported-and-tested-by: Linus Walleij Signed-off-by: Viresh Kumar Reviewed-by: Srivatsa S. Bhat Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 89b3c52cd5c3..04548f7023af 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1460,6 +1460,9 @@ unsigned int cpufreq_get(unsigned int cpu) { unsigned int ret_freq = 0; + if (cpufreq_disabled() || !cpufreq_driver) + return -ENOENT; + if (!down_read_trylock(&cpufreq_rwsem)) return 0; From 116decb7e48b46a8c171bd47f377fa527067f788 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Wed, 18 Sep 2013 10:44:53 +0530 Subject: [PATCH 198/523] cpufreq: exynos5440: Fix potential NULL pointer dereference If 'dvfs_info' is NULL (due to devm_kzalloc failure) the failure error message would try to dereference it. Use 'pdev' instead. Signed-off-by: Sachin Kamat Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/exynos5440-cpufreq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/exynos5440-cpufreq.c b/drivers/cpufreq/exynos5440-cpufreq.c index d514c152fd1a..be5380ecdcd4 100644 --- a/drivers/cpufreq/exynos5440-cpufreq.c +++ b/drivers/cpufreq/exynos5440-cpufreq.c @@ -457,7 +457,7 @@ err_free_table: opp_free_cpufreq_table(dvfs_info->dev, &dvfs_info->freq_table); err_put_node: of_node_put(np); - dev_err(dvfs_info->dev, "%s: failed initialization\n", __func__); + dev_err(&pdev->dev, "%s: failed initialization\n", __func__); return ret; } From ede2033c405bfbd6b74b113cf69c6f54cef35902 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Fri, 6 Sep 2013 16:49:18 -0500 Subject: [PATCH 199/523] openrisc: clean-up prom.h Clean-up some copy/paste declarations that are not necessary. All the functions either don't exist or are already declared in other headers. This is needed in preparation of of_irq.h clean-up. Signed-off-by: Rob Herring Cc: Jonas Bonn Cc: linux@lists.openrisc.net --- arch/openrisc/include/asm/prom.h | 44 -------------------------------- 1 file changed, 44 deletions(-) diff --git a/arch/openrisc/include/asm/prom.h b/arch/openrisc/include/asm/prom.h index eb59bfe23e85..93c9980e1b6b 100644 --- a/arch/openrisc/include/asm/prom.h +++ b/arch/openrisc/include/asm/prom.h @@ -14,53 +14,9 @@ * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ - -#include /* linux/of.h gets to determine #include ordering */ - #ifndef _ASM_OPENRISC_PROM_H #define _ASM_OPENRISC_PROM_H -#ifdef __KERNEL__ -#ifndef __ASSEMBLY__ -#include -#include -#include -#include -#include -#include -#include -#include -#include #define HAVE_ARCH_DEVTREE_FIXUPS -/* Other Prototypes */ -extern int early_uartlite_console(void); - -/* Parse the ibm,dma-window property of an OF node into the busno, phys and - * size parameters. - */ -void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop, - unsigned long *busno, unsigned long *phys, unsigned long *size); - -extern void kdump_move_device_tree(void); - -/* Get the MAC address */ -extern const void *of_get_mac_address(struct device_node *np); - -/** - * of_irq_map_pci - Resolve the interrupt for a PCI device - * @pdev: the device whose interrupt is to be resolved - * @out_irq: structure of_irq filled by this function - * - * This function resolves the PCI interrupt for a given PCI device. If a - * device-node exists for a given pci_dev, it will use normal OF tree - * walking. If not, it will implement standard swizzling and walk up the - * PCI tree until an device-node is found, at which point it will finish - * resolving using the OF tree walking. - */ -struct pci_dev; -extern int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq); - -#endif /* __ASSEMBLY__ */ -#endif /* __KERNEL__ */ #endif /* _ASM_OPENRISC_PROM_H */ From b0b8c960ffcc5bfc82d1a09ad931673e3a36c15a Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Wed, 4 Sep 2013 10:52:57 -0500 Subject: [PATCH 200/523] of: clean-up ifdefs in of_irq.h Much of of_irq.h is needlessly ifdef'ed. Clean this up and minimize the amount ifdef'ed code. This fixes some build warnings when CONFIG_OF is not enabled (seen on i386 and x86_64): include/linux/of_irq.h:82:7: warning: 'struct device_node' declared inside parameter list [enabled by default] include/linux/of_irq.h:82:7: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default] include/linux/of_irq.h:87:47: warning: 'struct device_node' declared inside parameter list [enabled by default] Compile tested on i386, sparc and arm. Reported-by: Randy Dunlap Cc: Grant Likely Signed-off-by: Rob Herring --- include/linux/of_irq.h | 20 ++++++++------------ 1 file changed, 8 insertions(+), 12 deletions(-) diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h index 535cecf1e02f..fcd63baee5f2 100644 --- a/include/linux/of_irq.h +++ b/include/linux/of_irq.h @@ -1,8 +1,6 @@ #ifndef __OF_IRQ_H #define __OF_IRQ_H -#if defined(CONFIG_OF) -struct of_irq; #include #include #include @@ -10,14 +8,6 @@ struct of_irq; #include #include -/* - * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC - * implements it differently. However, the prototype is the same for all, - * so declare it here regardless of the CONFIG_OF_IRQ setting. - */ -extern unsigned int irq_of_parse_and_map(struct device_node *node, int index); - -#if defined(CONFIG_OF_IRQ) /** * of_irq - container for device_node/irq_specifier pair for an irq controller * @controller: pointer to interrupt controller device tree node @@ -71,11 +61,17 @@ extern int of_irq_to_resource(struct device_node *dev, int index, extern int of_irq_count(struct device_node *dev); extern int of_irq_to_resource_table(struct device_node *dev, struct resource *res, int nr_irqs); -extern struct device_node *of_irq_find_parent(struct device_node *child); extern void of_irq_init(const struct of_device_id *matches); -#endif /* CONFIG_OF_IRQ */ +#if defined(CONFIG_OF) +/* + * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC + * implements it differently. However, the prototype is the same for all, + * so declare it here regardless of the CONFIG_OF_IRQ setting. + */ +extern unsigned int irq_of_parse_and_map(struct device_node *node, int index); +extern struct device_node *of_irq_find_parent(struct device_node *child); #else /* !CONFIG_OF */ static inline unsigned int irq_of_parse_and_map(struct device_node *dev, From 53126a2f679382f3eac370a012290f19c672f088 Mon Sep 17 00:00:00 2001 From: Dinh Nguyen Date: Mon, 16 Sep 2013 15:57:48 -0500 Subject: [PATCH 201/523] dts: Fix misspelling of Synopsys s/Synopsis/Synopsys s/synopsis/synopsys Signed-off-by: Dinh Nguyen Cc: Pavel Machek CC: Arnd Bergmann CC: Olof Johansson Cc: Rob Herring Cc: Pawel Moll Cc: Mark Rutland Cc: Stephen Warren Cc: Ian Campbell Cc: Chris Ball Cc: Jaehoon Chung Cc: Seungwon Jeon Cc: Tomasz Figa Cc: devicetree@vger.kernel.org Cc: linux-mmc@vger.kernel.org CC: linux-arm-kernel@lists.infradead.org Acked-by: Olof Johansson Signed-off-by: Rob Herring --- .../devicetree/bindings/mmc/exynos-dw-mshc.txt | 10 +++++----- .../devicetree/bindings/mmc/rockchip-dw-mshc.txt | 10 +++++----- .../mmc/{synopsis-dw-mshc.txt => synopsys-dw-mshc.txt} | 8 ++++---- .../devicetree/bindings/pci/designware-pcie.txt | 2 +- 4 files changed, 15 insertions(+), 15 deletions(-) rename Documentation/devicetree/bindings/mmc/{synopsis-dw-mshc.txt => synopsys-dw-mshc.txt} (93%) diff --git a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt index 6d1c0988cfc7..c67b975c8906 100644 --- a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt +++ b/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt @@ -1,11 +1,11 @@ -* Samsung Exynos specific extensions to the Synopsis Designware Mobile +* Samsung Exynos specific extensions to the Synopsys Designware Mobile Storage Host Controller -The Synopsis designware mobile storage host controller is used to interface +The Synopsys designware mobile storage host controller is used to interface a SoC with storage medium such as eMMC or SD/MMC cards. This file documents -differences between the core Synopsis dw mshc controller properties described -by synopsis-dw-mshc.txt and the properties used by the Samsung Exynos specific -extensions to the Synopsis Designware Mobile Storage Host Controller. +differences between the core Synopsys dw mshc controller properties described +by synopsys-dw-mshc.txt and the properties used by the Samsung Exynos specific +extensions to the Synopsys Designware Mobile Storage Host Controller. Required Properties: diff --git a/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt index 8a3d91d47b6a..c559f3f36309 100644 --- a/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt +++ b/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt @@ -1,11 +1,11 @@ -* Rockchip specific extensions to the Synopsis Designware Mobile +* Rockchip specific extensions to the Synopsys Designware Mobile Storage Host Controller -The Synopsis designware mobile storage host controller is used to interface +The Synopsys designware mobile storage host controller is used to interface a SoC with storage medium such as eMMC or SD/MMC cards. This file documents -differences between the core Synopsis dw mshc controller properties described -by synopsis-dw-mshc.txt and the properties used by the Rockchip specific -extensions to the Synopsis Designware Mobile Storage Host Controller. +differences between the core Synopsys dw mshc controller properties described +by synopsys-dw-mshc.txt and the properties used by the Rockchip specific +extensions to the Synopsys Designware Mobile Storage Host Controller. Required Properties: diff --git a/Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt similarity index 93% rename from Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt rename to Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt index cdcebea9c6f5..066a78b034ca 100644 --- a/Documentation/devicetree/bindings/mmc/synopsis-dw-mshc.txt +++ b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt @@ -1,14 +1,14 @@ -* Synopsis Designware Mobile Storage Host Controller +* Synopsys Designware Mobile Storage Host Controller -The Synopsis designware mobile storage host controller is used to interface +The Synopsys designware mobile storage host controller is used to interface a SoC with storage medium such as eMMC or SD/MMC cards. This file documents differences between the core mmc properties described by mmc.txt and the -properties used by the Synopsis Designware Mobile Storage Host Controller. +properties used by the Synopsys Designware Mobile Storage Host Controller. Required Properties: * compatible: should be - - snps,dw-mshc: for controllers compliant with synopsis dw-mshc. + - snps,dw-mshc: for controllers compliant with synopsys dw-mshc. * #address-cells: should be 1. * #size-cells: should be 0. diff --git a/Documentation/devicetree/bindings/pci/designware-pcie.txt b/Documentation/devicetree/bindings/pci/designware-pcie.txt index eabcb4b5db6e..e216af356847 100644 --- a/Documentation/devicetree/bindings/pci/designware-pcie.txt +++ b/Documentation/devicetree/bindings/pci/designware-pcie.txt @@ -1,4 +1,4 @@ -* Synopsis Designware PCIe interface +* Synopsys Designware PCIe interface Required properties: - compatible: should contain "snps,dw-pcie" to identify the From 22356f447ceb8d97a4885792e7d9e4607f712e1b Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Tue, 24 Sep 2013 18:29:11 -0700 Subject: [PATCH 202/523] mm: Place preemption point in do_mlockall() loop There is a loop in do_mlockall() that lacks a preemption point, which means that the following can happen on non-preemptible builds of the kernel. Dave Jones reports: "My fuzz tester keeps hitting this. Every instance shows the non-irq stack came in from mlockall. I'm only seeing this on one box, but that has more ram (8gb) than my other machines, which might explain it. INFO: rcu_preempt self-detected stall on CPU { 3} (t=6500 jiffies g=470344 c=470343 q=0) sending NMI to all CPUs: NMI backtrace for cpu 3 CPU: 3 PID: 29664 Comm: trinity-child2 Not tainted 3.11.0-rc1+ #32 Call Trace: lru_add_drain_all+0x15/0x20 SyS_mlockall+0xa5/0x1a0 tracesys+0xdd/0xe2" This commit addresses this problem by inserting the required preemption point. Reported-by: Dave Jones Signed-off-by: Paul E. McKenney Cc: KOSAKI Motohiro Cc: Michel Lespinasse Cc: Andrew Morton Signed-off-by: Linus Torvalds --- mm/mlock.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/mlock.c b/mm/mlock.c index d63802663242..67ba6da7d0e3 100644 --- a/mm/mlock.c +++ b/mm/mlock.c @@ -736,6 +736,7 @@ static int do_mlockall(int flags) /* Ignore errors */ mlock_fixup(vma, &prev, vma->vm_start, vma->vm_end, newflags); + cond_resched(); } out: return 0; From 0366a1c70b89efed4f9d590216bb004a16effbed Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 23 Sep 2013 14:29:11 +1000 Subject: [PATCH 203/523] powerpc/irq: Run softirqs off the top of the irq stack Nowadays, irq_exit() calls __do_softirq() pretty much directly instead of calling do_softirq() which switches to the decicated softirq stack. This has lead to observed stack overflows on powerpc since we call irq_enter() and irq_exit() outside of the scope that switches to the irq stack. This fixes it by moving the stack switching up a level, making irq_enter() and irq_exit() run off the irq stack. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/irq.h | 4 +- arch/powerpc/kernel/irq.c | 104 ++++++++++++++++----------------- arch/powerpc/kernel/misc_32.S | 9 ++- arch/powerpc/kernel/misc_64.S | 10 ++-- 4 files changed, 62 insertions(+), 65 deletions(-) diff --git a/arch/powerpc/include/asm/irq.h b/arch/powerpc/include/asm/irq.h index 0e40843a1c6e..41f13cec8a8f 100644 --- a/arch/powerpc/include/asm/irq.h +++ b/arch/powerpc/include/asm/irq.h @@ -69,9 +69,9 @@ extern struct thread_info *softirq_ctx[NR_CPUS]; extern void irq_ctx_init(void); extern void call_do_softirq(struct thread_info *tp); -extern int call_handle_irq(int irq, void *p1, - struct thread_info *tp, void *func); +extern void call_do_irq(struct pt_regs *regs, struct thread_info *tp); extern void do_IRQ(struct pt_regs *regs); +extern void __do_irq(struct pt_regs *regs); int irq_choose_cpu(const struct cpumask *mask); diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index c69440cef7af..2234a1276a77 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -441,50 +441,6 @@ void migrate_irqs(void) } #endif -static inline void handle_one_irq(unsigned int irq) -{ - struct thread_info *curtp, *irqtp; - unsigned long saved_sp_limit; - struct irq_desc *desc; - - desc = irq_to_desc(irq); - if (!desc) - return; - - /* Switch to the irq stack to handle this */ - curtp = current_thread_info(); - irqtp = hardirq_ctx[smp_processor_id()]; - - if (curtp == irqtp) { - /* We're already on the irq stack, just handle it */ - desc->handle_irq(irq, desc); - return; - } - - saved_sp_limit = current->thread.ksp_limit; - - irqtp->task = curtp->task; - irqtp->flags = 0; - - /* Copy the softirq bits in preempt_count so that the - * softirq checks work in the hardirq context. */ - irqtp->preempt_count = (irqtp->preempt_count & ~SOFTIRQ_MASK) | - (curtp->preempt_count & SOFTIRQ_MASK); - - current->thread.ksp_limit = (unsigned long)irqtp + - _ALIGN_UP(sizeof(struct thread_info), 16); - - call_handle_irq(irq, desc, irqtp, desc->handle_irq); - current->thread.ksp_limit = saved_sp_limit; - irqtp->task = NULL; - - /* Set any flag that may have been set on the - * alternate stack - */ - if (irqtp->flags) - set_bits(irqtp->flags, &curtp->flags); -} - static inline void check_stack_overflow(void) { #ifdef CONFIG_DEBUG_STACKOVERFLOW @@ -501,9 +457,9 @@ static inline void check_stack_overflow(void) #endif } -void do_IRQ(struct pt_regs *regs) +void __do_irq(struct pt_regs *regs) { - struct pt_regs *old_regs = set_irq_regs(regs); + struct irq_desc *desc; unsigned int irq; irq_enter(); @@ -519,18 +475,64 @@ void do_IRQ(struct pt_regs *regs) */ irq = ppc_md.get_irq(); - /* We can hard enable interrupts now */ + /* We can hard enable interrupts now to allow perf interrupts */ may_hard_irq_enable(); /* And finally process it */ - if (irq != NO_IRQ) - handle_one_irq(irq); - else + if (unlikely(irq == NO_IRQ)) __get_cpu_var(irq_stat).spurious_irqs++; + else { + desc = irq_to_desc(irq); + if (likely(desc)) + desc->handle_irq(irq, desc); + } trace_irq_exit(regs); irq_exit(); +} + +void do_IRQ(struct pt_regs *regs) +{ + struct pt_regs *old_regs = set_irq_regs(regs); + struct thread_info *curtp, *irqtp; + unsigned long saved_sp_limit; + + /* Switch to the irq stack to handle this */ + curtp = current_thread_info(); + irqtp = hardirq_ctx[raw_smp_processor_id()]; + + /* Already there ? */ + if (unlikely(curtp == irqtp)) { + __do_irq(regs); + set_irq_regs(old_regs); + return; + } + + /* Adjust the stack limit */ + saved_sp_limit = current->thread.ksp_limit; + current->thread.ksp_limit = (unsigned long)irqtp + + _ALIGN_UP(sizeof(struct thread_info), 16); + + + /* Prepare the thread_info in the irq stack */ + irqtp->task = curtp->task; + irqtp->flags = 0; + + /* Copy the preempt_count so that the [soft]irq checks work. */ + irqtp->preempt_count = curtp->preempt_count; + + /* Switch stack and call */ + call_do_irq(regs, irqtp); + + /* Restore stack limit */ + current->thread.ksp_limit = saved_sp_limit; + irqtp->task = NULL; + + /* Copy back updates to the thread_info */ + if (irqtp->flags) + set_bits(irqtp->flags, &curtp->flags); + set_irq_regs(old_regs); } @@ -592,12 +594,10 @@ void irq_ctx_init(void) memset((void *)softirq_ctx[i], 0, THREAD_SIZE); tp = softirq_ctx[i]; tp->cpu = i; - tp->preempt_count = 0; memset((void *)hardirq_ctx[i], 0, THREAD_SIZE); tp = hardirq_ctx[i]; tp->cpu = i; - tp->preempt_count = HARDIRQ_OFFSET; } } diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index 777d999f563b..7da3882a3622 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -47,13 +47,12 @@ _GLOBAL(call_do_softirq) mtlr r0 blr -_GLOBAL(call_handle_irq) +_GLOBAL(call_do_irq) mflr r0 stw r0,4(r1) - mtctr r6 - stwu r1,THREAD_SIZE-STACK_FRAME_OVERHEAD(r5) - mr r1,r5 - bctrl + stwu r1,THREAD_SIZE-STACK_FRAME_OVERHEAD(r4) + mr r1,r4 + bl __do_irq lwz r1,0(r1) lwz r0,4(r1) mtlr r0 diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S index 971d7e78aff2..e59caf874d05 100644 --- a/arch/powerpc/kernel/misc_64.S +++ b/arch/powerpc/kernel/misc_64.S @@ -40,14 +40,12 @@ _GLOBAL(call_do_softirq) mtlr r0 blr -_GLOBAL(call_handle_irq) - ld r8,0(r6) +_GLOBAL(call_do_irq) mflr r0 std r0,16(r1) - mtctr r8 - stdu r1,THREAD_SIZE-STACK_FRAME_OVERHEAD(r5) - mr r1,r5 - bctrl + stdu r1,THREAD_SIZE-STACK_FRAME_OVERHEAD(r4) + mr r1,r4 + bl .__do_irq ld r1,0(r1) ld r0,16(r1) mtlr r0 From cbc9565ee82694dec31d8137dec975b83175183b Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 24 Sep 2013 15:17:21 +1000 Subject: [PATCH 204/523] powerpc: Remove ksp_limit on ppc64 We've been keeping that field in thread_struct for a while, it contains the "limit" of the current stack pointer and is meant to be used for detecting stack overflows. It has a few problems however: - First, it was never actually *used* on 64-bit. Set and updated but not actually exploited - When switching stack to/from irq and softirq stacks, it's update is racy unless we hard disable interrupts, which is costly. This is fine on 32-bit as we don't soft-disable there but not on 64-bit. Thus rather than fixing 2 in order to implement 1 in some hypothetical future, let's remove the code completely from 64-bit. In order to avoid a clutter of ifdef's, we remove the updates from C code completely during interrupt stack switching, and instead maintain it from the asm helper that is used to do the stack switching in the first place. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/processor.h | 4 +--- arch/powerpc/kernel/asm-offsets.c | 3 ++- arch/powerpc/kernel/irq.c | 12 ------------ arch/powerpc/kernel/misc_32.S | 16 ++++++++++++++++ arch/powerpc/kernel/process.c | 3 ++- arch/powerpc/lib/sstep.c | 3 ++- 6 files changed, 23 insertions(+), 18 deletions(-) diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index e378cccfca55..ce4de5aed7b5 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -149,8 +149,6 @@ typedef struct { struct thread_struct { unsigned long ksp; /* Kernel stack pointer */ - unsigned long ksp_limit; /* if ksp <= ksp_limit stack overflow */ - #ifdef CONFIG_PPC64 unsigned long ksp_vsid; #endif @@ -162,6 +160,7 @@ struct thread_struct { #endif #ifdef CONFIG_PPC32 void *pgdir; /* root of page-table tree */ + unsigned long ksp_limit; /* if ksp <= ksp_limit stack overflow */ #endif #ifdef CONFIG_PPC_ADV_DEBUG_REGS /* @@ -321,7 +320,6 @@ struct thread_struct { #else #define INIT_THREAD { \ .ksp = INIT_SP, \ - .ksp_limit = INIT_SP_LIMIT, \ .regs = (struct pt_regs *)INIT_SP - 1, /* XXX bogus, I think */ \ .fs = KERNEL_DS, \ .fpr = {{0}}, \ diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index d8958be5f31a..502c7a4e73f7 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -80,10 +80,11 @@ int main(void) DEFINE(TASKTHREADPPR, offsetof(struct task_struct, thread.ppr)); #else DEFINE(THREAD_INFO, offsetof(struct task_struct, stack)); + DEFINE(THREAD_INFO_GAP, _ALIGN_UP(sizeof(struct thread_info), 16)); + DEFINE(KSP_LIMIT, offsetof(struct thread_struct, ksp_limit)); #endif /* CONFIG_PPC64 */ DEFINE(KSP, offsetof(struct thread_struct, ksp)); - DEFINE(KSP_LIMIT, offsetof(struct thread_struct, ksp_limit)); DEFINE(PT_REGS, offsetof(struct thread_struct, regs)); #ifdef CONFIG_BOOKE DEFINE(THREAD_NORMSAVES, offsetof(struct thread_struct, normsave[0])); diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 2234a1276a77..57d286a78f86 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -496,7 +496,6 @@ void do_IRQ(struct pt_regs *regs) { struct pt_regs *old_regs = set_irq_regs(regs); struct thread_info *curtp, *irqtp; - unsigned long saved_sp_limit; /* Switch to the irq stack to handle this */ curtp = current_thread_info(); @@ -509,12 +508,6 @@ void do_IRQ(struct pt_regs *regs) return; } - /* Adjust the stack limit */ - saved_sp_limit = current->thread.ksp_limit; - current->thread.ksp_limit = (unsigned long)irqtp + - _ALIGN_UP(sizeof(struct thread_info), 16); - - /* Prepare the thread_info in the irq stack */ irqtp->task = curtp->task; irqtp->flags = 0; @@ -526,7 +519,6 @@ void do_IRQ(struct pt_regs *regs) call_do_irq(regs, irqtp); /* Restore stack limit */ - current->thread.ksp_limit = saved_sp_limit; irqtp->task = NULL; /* Copy back updates to the thread_info */ @@ -604,16 +596,12 @@ void irq_ctx_init(void) static inline void do_softirq_onstack(void) { struct thread_info *curtp, *irqtp; - unsigned long saved_sp_limit = current->thread.ksp_limit; curtp = current_thread_info(); irqtp = softirq_ctx[smp_processor_id()]; irqtp->task = curtp->task; irqtp->flags = 0; - current->thread.ksp_limit = (unsigned long)irqtp + - _ALIGN_UP(sizeof(struct thread_info), 16); call_do_softirq(irqtp); - current->thread.ksp_limit = saved_sp_limit; irqtp->task = NULL; /* Set any flag that may have been set on the diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index 7da3882a3622..2b0ad9845363 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -36,25 +36,41 @@ .text +/* + * We store the saved ksp_limit in the unused part + * of the STACK_FRAME_OVERHEAD + */ _GLOBAL(call_do_softirq) mflr r0 stw r0,4(r1) + lwz r10,THREAD+KSP_LIMIT(r2) + addi r11,r3,THREAD_INFO_GAP stwu r1,THREAD_SIZE-STACK_FRAME_OVERHEAD(r3) mr r1,r3 + stw r10,8(r1) + stw r11,THREAD+KSP_LIMIT(r2) bl __do_softirq + lwz r10,8(r1) lwz r1,0(r1) lwz r0,4(r1) + stw r10,THREAD+KSP_LIMIT(r2) mtlr r0 blr _GLOBAL(call_do_irq) mflr r0 stw r0,4(r1) + lwz r10,THREAD+KSP_LIMIT(r2) + addi r11,r3,THREAD_INFO_GAP stwu r1,THREAD_SIZE-STACK_FRAME_OVERHEAD(r4) mr r1,r4 + stw r10,8(r1) + stw r11,THREAD+KSP_LIMIT(r2) bl __do_irq + lwz r10,8(r1) lwz r1,0(r1) lwz r0,4(r1) + stw r10,THREAD+KSP_LIMIT(r2) mtlr r0 blr diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 6f428da53e20..96d2fdf3aa9e 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1000,9 +1000,10 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, kregs = (struct pt_regs *) sp; sp -= STACK_FRAME_OVERHEAD; p->thread.ksp = sp; +#ifdef CONFIG_PPC32 p->thread.ksp_limit = (unsigned long)task_stack_page(p) + _ALIGN_UP(sizeof(struct thread_info), 16); - +#endif #ifdef CONFIG_HAVE_HW_BREAKPOINT p->thread.ptrace_bps[0] = NULL; #endif diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c index a7ee978fb860..b1faa1593c90 100644 --- a/arch/powerpc/lib/sstep.c +++ b/arch/powerpc/lib/sstep.c @@ -1505,6 +1505,7 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) */ if ((ra == 1) && !(regs->msr & MSR_PR) \ && (val3 >= (regs->gpr[1] - STACK_INT_FRAME_SIZE))) { +#ifdef CONFIG_PPC32 /* * Check if we will touch kernel sack overflow */ @@ -1513,7 +1514,7 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) err = -EINVAL; break; } - +#endif /* CONFIG_PPC32 */ /* * Check if we already set since that means we'll * lose the previous value. From 0c9fa29149d3726e14262aeb0c8461a948cc9d56 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 24 Sep 2013 16:10:38 +1000 Subject: [PATCH 205/523] powerpc/zImage: make the "OF" wrapper support ePAPR boot This makes the "OF" zImage wrapper (zImage.pseries, zImage.pmac, zImage.maple) work if booted via a flat device-tree (ePAPR boot mode), and thus potentially usable with kexec. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/boot/Makefile | 4 ++-- arch/powerpc/boot/epapr-wrapper.c | 9 +++++++++ arch/powerpc/boot/epapr.c | 4 ++-- arch/powerpc/boot/of.c | 16 +++++++++++++++- arch/powerpc/boot/wrapper | 9 +++++---- 5 files changed, 33 insertions(+), 9 deletions(-) create mode 100644 arch/powerpc/boot/epapr-wrapper.c diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index 6a15c968d214..15ca2255f438 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -74,7 +74,7 @@ src-wlib-$(CONFIG_8xx) += mpc8xx.c planetcore.c src-wlib-$(CONFIG_PPC_82xx) += pq2.c fsl-soc.c planetcore.c src-wlib-$(CONFIG_EMBEDDED6xx) += mv64x60.c mv64x60_i2c.c ugecon.c -src-plat-y := of.c +src-plat-y := of.c epapr.c src-plat-$(CONFIG_40x) += fixed-head.S ep405.c cuboot-hotfoot.c \ treeboot-walnut.c cuboot-acadia.c \ cuboot-kilauea.c simpleboot.c \ @@ -97,7 +97,7 @@ src-plat-$(CONFIG_EMBEDDED6xx) += cuboot-pq2.c cuboot-mpc7448hpc2.c \ prpmc2800.c src-plat-$(CONFIG_AMIGAONE) += cuboot-amigaone.c src-plat-$(CONFIG_PPC_PS3) += ps3-head.S ps3-hvcall.S ps3.c -src-plat-$(CONFIG_EPAPR_BOOT) += epapr.c +src-plat-$(CONFIG_EPAPR_BOOT) += epapr.c epapr-wrapper.c src-wlib := $(sort $(src-wlib-y)) src-plat := $(sort $(src-plat-y)) diff --git a/arch/powerpc/boot/epapr-wrapper.c b/arch/powerpc/boot/epapr-wrapper.c new file mode 100644 index 000000000000..c10191006673 --- /dev/null +++ b/arch/powerpc/boot/epapr-wrapper.c @@ -0,0 +1,9 @@ +extern void epapr_platform_init(unsigned long r3, unsigned long r4, + unsigned long r5, unsigned long r6, + unsigned long r7); + +void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, + unsigned long r6, unsigned long r7) +{ + epapr_platform_init(r3, r4, r5, r6, r7); +} diff --git a/arch/powerpc/boot/epapr.c b/arch/powerpc/boot/epapr.c index 06c1961bd124..02e91aa2194a 100644 --- a/arch/powerpc/boot/epapr.c +++ b/arch/powerpc/boot/epapr.c @@ -48,8 +48,8 @@ static void platform_fixups(void) fdt_addr, fdt_totalsize((void *)fdt_addr), ima_size); } -void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7) +void epapr_platform_init(unsigned long r3, unsigned long r4, unsigned long r5, + unsigned long r6, unsigned long r7) { epapr_magic = r6; ima_size = r7; diff --git a/arch/powerpc/boot/of.c b/arch/powerpc/boot/of.c index 61d9899aa0d0..62e2f43ec1df 100644 --- a/arch/powerpc/boot/of.c +++ b/arch/powerpc/boot/of.c @@ -26,6 +26,9 @@ static unsigned long claim_base; +void epapr_platform_init(unsigned long r3, unsigned long r4, unsigned long r5, + unsigned long r6, unsigned long r7); + static void *of_try_claim(unsigned long size) { unsigned long addr = 0; @@ -61,7 +64,7 @@ static void of_image_hdr(const void *hdr) } } -void platform_init(unsigned long a1, unsigned long a2, void *promptr) +static void of_platform_init(unsigned long a1, unsigned long a2, void *promptr) { platform_ops.image_hdr = of_image_hdr; platform_ops.malloc = of_try_claim; @@ -81,3 +84,14 @@ void platform_init(unsigned long a1, unsigned long a2, void *promptr) loader_info.initrd_size = a2; } } + +void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, + unsigned long r6, unsigned long r7) +{ + /* Detect OF vs. ePAPR boot */ + if (r5) + of_platform_init(r3, r4, (void *)r5); + else + epapr_platform_init(r3, r4, r5, r6, r7); +} + diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper index 6761c746048d..cd7af841ba05 100755 --- a/arch/powerpc/boot/wrapper +++ b/arch/powerpc/boot/wrapper @@ -148,18 +148,18 @@ make_space=y case "$platform" in pseries) - platformo=$object/of.o + platformo="$object/of.o $object/epapr.o" link_address='0x4000000' ;; maple) - platformo=$object/of.o + platformo="$object/of.o $object/epapr.o" link_address='0x400000' ;; pmac|chrp) - platformo=$object/of.o + platformo="$object/of.o $object/epapr.o" ;; coff) - platformo="$object/crt0.o $object/of.o" + platformo="$object/crt0.o $object/of.o $object/epapr.o" lds=$object/zImage.coff.lds link_address='0x500000' pie= @@ -253,6 +253,7 @@ treeboot-iss4xx-mpic) platformo="$object/treeboot-iss4xx.o" ;; epapr) + platformo="$object/epapr.o $object/epapr-wrapper.o" link_address='0x20000000' pie=-pie ;; From dbe78b40118636f2d5d276144239dd4bfd5f04f9 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Wed, 25 Sep 2013 14:02:50 +1000 Subject: [PATCH 206/523] powerpc/pseries: Do not start secondaries in Open Firmware Starting secondary CPUs early on from Open Firmware and placing them in a holding spin loop slows down the boot process significantly under some hypervisors such as KVM. This is also unnecessary when RTAS supports querying the CPU state So let's not do it. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/prom_init.c | 21 +++++++++++++++++++++ arch/powerpc/platforms/pseries/smp.c | 26 ++++++++++++++++---------- 2 files changed, 37 insertions(+), 10 deletions(-) diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 12e656ffe60e..5fe2842e8bab 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -196,6 +196,8 @@ static int __initdata mem_reserve_cnt; static cell_t __initdata regbuf[1024]; +static bool rtas_has_query_cpu_stopped; + /* * Error results ... some OF calls will return "-1" on error, some @@ -1574,6 +1576,11 @@ static void __init prom_instantiate_rtas(void) prom_setprop(rtas_node, "/rtas", "linux,rtas-entry", &val, sizeof(val)); + /* Check if it supports "query-cpu-stopped-state" */ + if (prom_getprop(rtas_node, "query-cpu-stopped-state", + &val, sizeof(val)) != PROM_ERROR) + rtas_has_query_cpu_stopped = true; + #if defined(CONFIG_PPC_POWERNV) && defined(__BIG_ENDIAN__) /* PowerVN takeover hack */ prom_rtas_data = base; @@ -1815,6 +1822,18 @@ static void __init prom_hold_cpus(void) = (void *) LOW_ADDR(__secondary_hold_acknowledge); unsigned long secondary_hold = LOW_ADDR(__secondary_hold); + /* + * On pseries, if RTAS supports "query-cpu-stopped-state", + * we skip this stage, the CPUs will be started by the + * kernel using RTAS. + */ + if ((of_platform == PLATFORM_PSERIES || + of_platform == PLATFORM_PSERIES_LPAR) && + rtas_has_query_cpu_stopped) { + prom_printf("prom_hold_cpus: skipped\n"); + return; + } + prom_debug("prom_hold_cpus: start...\n"); prom_debug(" 1) spinloop = 0x%x\n", (unsigned long)spinloop); prom_debug(" 1) *spinloop = 0x%x\n", *spinloop); @@ -3011,6 +3030,8 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, * On non-powermacs, put all CPUs in spin-loops. * * PowerMacs use a different mechanism to spin CPUs + * + * (This must be done after instanciating RTAS) */ if (of_platform != PLATFORM_POWERMAC && of_platform != PLATFORM_OPAL) diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c index 1c1771a40250..24f58cb0a543 100644 --- a/arch/powerpc/platforms/pseries/smp.c +++ b/arch/powerpc/platforms/pseries/smp.c @@ -233,17 +233,23 @@ static void __init smp_init_pseries(void) alloc_bootmem_cpumask_var(&of_spin_mask); - /* Mark threads which are still spinning in hold loops. */ - if (cpu_has_feature(CPU_FTR_SMT)) { - for_each_present_cpu(i) { - if (cpu_thread_in_core(i) == 0) - cpumask_set_cpu(i, of_spin_mask); - } - } else { - cpumask_copy(of_spin_mask, cpu_present_mask); - } + /* + * Mark threads which are still spinning in hold loops + * + * We know prom_init will not have started them if RTAS supports + * query-cpu-stopped-state. + */ + if (rtas_token("query-cpu-stopped-state") == RTAS_UNKNOWN_SERVICE) { + if (cpu_has_feature(CPU_FTR_SMT)) { + for_each_present_cpu(i) { + if (cpu_thread_in_core(i) == 0) + cpumask_set_cpu(i, of_spin_mask); + } + } else + cpumask_copy(of_spin_mask, cpu_present_mask); - cpumask_clear_cpu(boot_cpuid, of_spin_mask); + cpumask_clear_cpu(boot_cpuid, of_spin_mask); + } /* Non-lpar has additional take/give timebase */ if (rtas_token("freeze-time-base") != RTAS_UNKNOWN_SERVICE) { From 7a20c2fad61aa3624e83c671d36dbd36b2661476 Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Tue, 24 Sep 2013 20:13:44 -0400 Subject: [PATCH 207/523] x86/reboot: Fix apparent cut-n-paste mistake in Dell reboot workaround This seems to have been copied from the Optiplex 990 entry above, but somoene forgot to change the ident text. Signed-off-by: Dave Jones Link: http://lkml.kernel.org/r/20130925001344.GA13554@redhat.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/reboot.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index 5f4ad2714109..e643e744e4d8 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -352,7 +352,7 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = { }, { /* Handle problems with rebooting on the Precision M6600. */ .callback = set_pci_reboot, - .ident = "Dell OptiPlex 990", + .ident = "Dell Precision M6600", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), DMI_MATCH(DMI_PRODUCT_NAME, "Precision M6600"), From bcd1c2949501869631b25fd62d8df5079677a101 Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Wed, 25 Sep 2013 10:58:22 +0300 Subject: [PATCH 208/523] KVM: VMX: do not check bit 12 of EPT violation exit qualification when undefined Bit 12 is undefined in any of the following cases: - If the "NMI exiting" VM-execution control is 1 and the "virtual NMIs" VM-execution control is 0. - If the VM exit sets the valid bit in the IDT-vectoring information field Signed-off-by: Gleb Natapov [Add parentheses around & within && - Paolo] Signed-off-by: Paolo Bonzini --- arch/x86/kvm/vmx.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index a1216de9ffda..3b8e7459dd4d 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -5345,7 +5345,9 @@ static int handle_ept_violation(struct kvm_vcpu *vcpu) * There are errata that may cause this bit to not be set: * AAK134, BY25. */ - if (exit_qualification & INTR_INFO_UNBLOCK_NMI) + if (!(to_vmx(vcpu)->idt_vectoring_info & VECTORING_INFO_VALID_MASK) && + cpu_has_virtual_nmis() && + (exit_qualification & INTR_INFO_UNBLOCK_NMI)) vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO, GUEST_INTR_STATE_NMI); gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS); From 0160676bba69523e8b0ac83f306cce7d342ed7c8 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Fri, 13 Sep 2013 15:13:30 +0100 Subject: [PATCH 209/523] xen/p2m: check MFN is in range before using the m2p table On hosts with more than 168 GB of memory, a 32-bit guest may attempt to grant map an MFN that is error cannot lookup in its mapping of the m2p table. There is an m2p lookup as part of m2p_add_override() and m2p_remove_override(). The lookup falls off the end of the mapped portion of the m2p and (because the mapping is at the highest virtual address) wraps around and the lookup causes a fault on what appears to be a user space address. do_page_fault() (thinking it's a fault to a userspace address), tries to lock mm->mmap_sem. If the gntdev device is used for the grant map, m2p_add_override() is called from from gnttab_mmap() with mm->mmap_sem already locked. do_page_fault() then deadlocks. The deadlock would most commonly occur when a 64-bit guest is started and xenconsoled attempts to grant map its console ring. Introduce mfn_to_pfn_no_overrides() which checks the MFN is within the mapped portion of the m2p table before accessing the table and use this in m2p_add_override(), m2p_remove_override(), and mfn_to_pfn() (which already had the correct range check). All faults caused by accessing the non-existant parts of the m2p are thus within the kernel address space and exception_fixup() is called without trying to lock mm->mmap_sem. This means that for MFNs that are outside the mapped range of the m2p then mfn_to_pfn() will always look in the m2p overrides. This is correct because it must be a foreign MFN (and the PFN in the m2p in this case is only relevant for the other domain). Signed-off-by: David Vrabel Cc: Stefano Stabellini Cc: Jan Beulich -- v3: check for auto_translated_physmap in mfn_to_pfn_no_overrides() v2: in mfn_to_pfn() look in m2p_overrides if the MFN is out of range as it's probably foreign. Signed-off-by: Konrad Rzeszutek Wilk Acked-by: Stefano Stabellini --- arch/x86/include/asm/xen/page.h | 31 ++++++++++++++++++++----------- arch/x86/xen/p2m.c | 10 ++++------ 2 files changed, 24 insertions(+), 17 deletions(-) diff --git a/arch/x86/include/asm/xen/page.h b/arch/x86/include/asm/xen/page.h index 6aef9fbc09b7..b913915e8e63 100644 --- a/arch/x86/include/asm/xen/page.h +++ b/arch/x86/include/asm/xen/page.h @@ -79,30 +79,38 @@ static inline int phys_to_machine_mapping_valid(unsigned long pfn) return get_phys_to_machine(pfn) != INVALID_P2M_ENTRY; } -static inline unsigned long mfn_to_pfn(unsigned long mfn) +static inline unsigned long mfn_to_pfn_no_overrides(unsigned long mfn) { unsigned long pfn; - int ret = 0; + int ret; if (xen_feature(XENFEAT_auto_translated_physmap)) return mfn; - if (unlikely(mfn >= machine_to_phys_nr)) { - pfn = ~0; - goto try_override; - } - pfn = 0; + if (unlikely(mfn >= machine_to_phys_nr)) + return ~0; + /* * The array access can fail (e.g., device space beyond end of RAM). * In such cases it doesn't matter what we return (we return garbage), * but we must handle the fault without crashing! */ ret = __get_user(pfn, &machine_to_phys_mapping[mfn]); -try_override: - /* ret might be < 0 if there are no entries in the m2p for mfn */ if (ret < 0) - pfn = ~0; - else if (get_phys_to_machine(pfn) != mfn) + return ~0; + + return pfn; +} + +static inline unsigned long mfn_to_pfn(unsigned long mfn) +{ + unsigned long pfn; + + if (xen_feature(XENFEAT_auto_translated_physmap)) + return mfn; + + pfn = mfn_to_pfn_no_overrides(mfn); + if (get_phys_to_machine(pfn) != mfn) { /* * If this appears to be a foreign mfn (because the pfn * doesn't map back to the mfn), then check the local override @@ -111,6 +119,7 @@ try_override: * m2p_find_override_pfn returns ~0 if it doesn't find anything. */ pfn = m2p_find_override_pfn(mfn, ~0); + } /* * pfn is ~0 if there are no entries in the m2p for mfn or if the diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c index 8b901e8d782d..a61c7d5811be 100644 --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -879,7 +879,6 @@ int m2p_add_override(unsigned long mfn, struct page *page, unsigned long uninitialized_var(address); unsigned level; pte_t *ptep = NULL; - int ret = 0; pfn = page_to_pfn(page); if (!PageHighMem(page)) { @@ -926,8 +925,8 @@ int m2p_add_override(unsigned long mfn, struct page *page, * frontend pages while they are being shared with the backend, * because mfn_to_pfn (that ends up being called by GUPF) will * return the backend pfn rather than the frontend pfn. */ - ret = __get_user(pfn, &machine_to_phys_mapping[mfn]); - if (ret == 0 && get_phys_to_machine(pfn) == mfn) + pfn = mfn_to_pfn_no_overrides(mfn); + if (get_phys_to_machine(pfn) == mfn) set_phys_to_machine(pfn, FOREIGN_FRAME(mfn)); return 0; @@ -942,7 +941,6 @@ int m2p_remove_override(struct page *page, unsigned long uninitialized_var(address); unsigned level; pte_t *ptep = NULL; - int ret = 0; pfn = page_to_pfn(page); mfn = get_phys_to_machine(pfn); @@ -1029,8 +1027,8 @@ int m2p_remove_override(struct page *page, * the original pfn causes mfn_to_pfn(mfn) to return the frontend * pfn again. */ mfn &= ~FOREIGN_FRAME_BIT; - ret = __get_user(pfn, &machine_to_phys_mapping[mfn]); - if (ret == 0 && get_phys_to_machine(pfn) == FOREIGN_FRAME(mfn) && + pfn = mfn_to_pfn_no_overrides(mfn); + if (get_phys_to_machine(pfn) == FOREIGN_FRAME(mfn) && m2p_find_override(mfn) == NULL) set_phys_to_machine(pfn, mfn); From 15a3eac0784edb73cb2ec0f0c97705ba4bd39b3f Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Wed, 25 Sep 2013 10:07:20 -0400 Subject: [PATCH 210/523] xen/spinlock: Document the xen_nopvspin parameter. Which disables in the ticketlock slowpath the Xen PV optimization's. Useful for diagnosing issues and comparing benchmarks in over-commit CPU scenarios. Signed-off-by: Konrad Rzeszutek Wilk --- Documentation/kernel-parameters.txt | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 7f9d4f53882c..b9589127b3ee 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -3412,6 +3412,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted. the unplug protocol never -- do not unplug even if version check succeeds + xen_nopvspin [X86,XEN] + Disables the ticketlock slowpath using Xen PV + optimizations. + xirc2ps_cs= [NET,PCMCIA] Format: ,,,,,[,[,[,]]] From 55c25c2f14496badefd780a9f179442756216b67 Mon Sep 17 00:00:00 2001 From: Jayachandran C Date: Wed, 25 Sep 2013 18:31:05 +0530 Subject: [PATCH 211/523] MIPS: mm: Move some checks out of 'for' loop in DMA operations The check cpu_needs_post_dma_flush() in mips_dma_sync_sg_for_cpu() and the check !plat_device_is_coherent() in mips_dma_sync_sg_for_device() can be moved outside the for loop. As a side effect, this also avoids a GCC bug that caused kernel compile to fail with the error: arch/mips/mm/dma-default.c: In function 'mips_dma_sync_sg_for_cpu': arch/mips/mm/dma-default.c:316:1: internal compiler error: in add_insn_before, at emit-rtl.c:3852 This gcc failure is seen in Code Sourcery toolchains [e.g. gcc version 4.7.2 (Sourcery CodeBench Lite 2012.09-99)] after commit "MIPS: Optimize current_cpu_type() for better code." Signed-off-by: Jayachandran C Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5907/ Reviewed-by: Markos Chandras Tested-by: Markos Chandras Signed-off-by: Ralf Baechle --- arch/mips/mm/dma-default.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c index f25a7e9f8cbc..5f8b95512580 100644 --- a/arch/mips/mm/dma-default.c +++ b/arch/mips/mm/dma-default.c @@ -308,12 +308,10 @@ static void mips_dma_sync_sg_for_cpu(struct device *dev, { int i; - /* Make sure that gcc doesn't leave the empty loop body. */ - for (i = 0; i < nelems; i++, sg++) { - if (cpu_needs_post_dma_flush(dev)) + if (cpu_needs_post_dma_flush(dev)) + for (i = 0; i < nelems; i++, sg++) __dma_sync(sg_page(sg), sg->offset, sg->length, direction); - } } static void mips_dma_sync_sg_for_device(struct device *dev, @@ -321,12 +319,10 @@ static void mips_dma_sync_sg_for_device(struct device *dev, { int i; - /* Make sure that gcc doesn't leave the empty loop body. */ - for (i = 0; i < nelems; i++, sg++) { - if (!plat_device_is_coherent(dev)) + if (!plat_device_is_coherent(dev)) + for (i = 0; i < nelems; i++, sg++) __dma_sync(sg_page(sg), sg->offset, sg->length, direction); - } } int mips_dma_mapping_error(struct device *dev, dma_addr_t dma_addr) From 576b523721b7fbbf44a411ff0b3d958906c41653 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Wed, 25 Sep 2013 22:16:16 +0900 Subject: [PATCH 212/523] perf probe: Fix probing symbols with optimization suffix Fix perf probe to probe on some symbols which have some optimzation suffixes, e.g. ".part", ".isra", and ".constprop". To fix this issue, instead of using the DIE name, perf probe uses the symbol name found by dwfl_module_addrsym(). This also involves a perf probe --vars operation update which now shows the symbol name instead of the DIE name. Without this patch, putting a probe on an inlined function which was compiled with a suffixed symbol will fail like this: $ perf probe -v getname_flags probe-definition(0): getname_flags symbol:getname_flags file:(null) line:0 offset:0 return:0 lazy:(null) 0 arguments Looking at the vmlinux_path (6 entries long) Using /lib/modules/3.11.0+/build/vmlinux for symbols found inline addr: 0xffffffff8119bb70 Probe point found: getname_flags+0 found inline addr: 0xffffffff8119bcb6 Probe point found: getname+6 found inline addr: 0xffffffff811a06a6 Probe point found: user_path_at_empty+6 find 3 probe_trace_events. Opening /sys/kernel/debug//tracing/kprobe_events write=1 Added new events: Writing event: p:probe/getname_flags getname_flags+0 Failed to write event: No such file or directory Error: Failed to add events. (-1) Because the debuginfo knows only the original (non suffix) symbol name, it uses the original symbol for probe address but the kernel (kallsyms) knows only suffixed symbol. Then, the kernel rejects that original symbol. This patch uses dwfl_module_addrsym() to get the correct (suffixed) symbol from symtab when a probe point is found. Reported-by: Arnaldo Carvalho de Melo Signed-off-by: Masami Hiramatsu Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20130925131616.31632.46658.stgit@udc4-manage.rcp.hitachi.co.jp Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/probe-finder.c | 75 ++++++++++++++++++---------------- tools/perf/util/probe-finder.h | 3 ++ 2 files changed, 43 insertions(+), 35 deletions(-) diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index 20c7299a9d4e..371476cb8ddc 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -118,7 +118,6 @@ static const Dwfl_Callbacks offline_callbacks = { static int debuginfo__init_offline_dwarf(struct debuginfo *self, const char *path) { - Dwfl_Module *mod; int fd; fd = open(path, O_RDONLY); @@ -129,11 +128,11 @@ static int debuginfo__init_offline_dwarf(struct debuginfo *self, if (!self->dwfl) goto error; - mod = dwfl_report_offline(self->dwfl, "", "", fd); - if (!mod) + self->mod = dwfl_report_offline(self->dwfl, "", "", fd); + if (!self->mod) goto error; - self->dbg = dwfl_module_getdwarf(mod, &self->bias); + self->dbg = dwfl_module_getdwarf(self->mod, &self->bias); if (!self->dbg) goto error; @@ -676,37 +675,42 @@ static int find_variable(Dwarf_Die *sc_die, struct probe_finder *pf) } /* Convert subprogram DIE to trace point */ -static int convert_to_trace_point(Dwarf_Die *sp_die, Dwarf_Addr paddr, - bool retprobe, struct probe_trace_point *tp) +static int convert_to_trace_point(Dwarf_Die *sp_die, Dwfl_Module *mod, + Dwarf_Addr paddr, bool retprobe, + struct probe_trace_point *tp) { Dwarf_Addr eaddr, highaddr; - const char *name; + GElf_Sym sym; + const char *symbol; - /* Copy the name of probe point */ - name = dwarf_diename(sp_die); - if (name) { - if (dwarf_entrypc(sp_die, &eaddr) != 0) { - pr_warning("Failed to get entry address of %s\n", - dwarf_diename(sp_die)); - return -ENOENT; - } - if (dwarf_highpc(sp_die, &highaddr) != 0) { - pr_warning("Failed to get end address of %s\n", - dwarf_diename(sp_die)); - return -ENOENT; - } - if (paddr > highaddr) { - pr_warning("Offset specified is greater than size of %s\n", - dwarf_diename(sp_die)); - return -EINVAL; - } - tp->symbol = strdup(name); - if (tp->symbol == NULL) - return -ENOMEM; - tp->offset = (unsigned long)(paddr - eaddr); - } else - /* This function has no name. */ - tp->offset = (unsigned long)paddr; + /* Verify the address is correct */ + if (dwarf_entrypc(sp_die, &eaddr) != 0) { + pr_warning("Failed to get entry address of %s\n", + dwarf_diename(sp_die)); + return -ENOENT; + } + if (dwarf_highpc(sp_die, &highaddr) != 0) { + pr_warning("Failed to get end address of %s\n", + dwarf_diename(sp_die)); + return -ENOENT; + } + if (paddr > highaddr) { + pr_warning("Offset specified is greater than size of %s\n", + dwarf_diename(sp_die)); + return -EINVAL; + } + + /* Get an appropriate symbol from symtab */ + symbol = dwfl_module_addrsym(mod, paddr, &sym, NULL); + if (!symbol) { + pr_warning("Failed to find symbol at 0x%lx\n", + (unsigned long)paddr); + return -ENOENT; + } + tp->offset = (unsigned long)(paddr - sym.st_value); + tp->symbol = strdup(symbol); + if (!tp->symbol) + return -ENOMEM; /* Return probe must be on the head of a subprogram */ if (retprobe) { @@ -1149,7 +1153,7 @@ static int add_probe_trace_event(Dwarf_Die *sc_die, struct probe_finder *pf) tev = &tf->tevs[tf->ntevs++]; /* Trace point should be converted from subprogram DIE */ - ret = convert_to_trace_point(&pf->sp_die, pf->addr, + ret = convert_to_trace_point(&pf->sp_die, tf->mod, pf->addr, pf->pev->point.retprobe, &tev->point); if (ret < 0) return ret; @@ -1181,7 +1185,7 @@ int debuginfo__find_trace_events(struct debuginfo *self, { struct trace_event_finder tf = { .pf = {.pev = pev, .callback = add_probe_trace_event}, - .max_tevs = max_tevs}; + .mod = self->mod, .max_tevs = max_tevs}; int ret; /* Allocate result tevs array */ @@ -1250,7 +1254,7 @@ static int add_available_vars(Dwarf_Die *sc_die, struct probe_finder *pf) vl = &af->vls[af->nvls++]; /* Trace point should be converted from subprogram DIE */ - ret = convert_to_trace_point(&pf->sp_die, pf->addr, + ret = convert_to_trace_point(&pf->sp_die, af->mod, pf->addr, pf->pev->point.retprobe, &vl->point); if (ret < 0) return ret; @@ -1289,6 +1293,7 @@ int debuginfo__find_available_vars_at(struct debuginfo *self, { struct available_var_finder af = { .pf = {.pev = pev, .callback = add_available_vars}, + .mod = self->mod, .max_vls = max_vls, .externs = externs}; int ret; diff --git a/tools/perf/util/probe-finder.h b/tools/perf/util/probe-finder.h index 17e94d0c36f9..3b7d63018960 100644 --- a/tools/perf/util/probe-finder.h +++ b/tools/perf/util/probe-finder.h @@ -23,6 +23,7 @@ static inline int is_c_varname(const char *name) /* debug information structure */ struct debuginfo { Dwarf *dbg; + Dwfl_Module *mod; Dwfl *dwfl; Dwarf_Addr bias; }; @@ -77,6 +78,7 @@ struct probe_finder { struct trace_event_finder { struct probe_finder pf; + Dwfl_Module *mod; /* For solving symbols */ struct probe_trace_event *tevs; /* Found trace events */ int ntevs; /* Number of trace events */ int max_tevs; /* Max number of trace events */ @@ -84,6 +86,7 @@ struct trace_event_finder { struct available_var_finder { struct probe_finder pf; + Dwfl_Module *mod; /* For solving symbols */ struct variable_list *vls; /* Found variable lists */ int nvls; /* Number of variable lists */ int max_vls; /* Max no. of variable lists */ From 6d19912c9bc0ae0ba5f7dd32c714ea7cc3339c81 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Sun, 22 Sep 2013 19:44:57 -0600 Subject: [PATCH 213/523] perf tools: Explicitly add libdl dependency Fixes compile failure on Fedora 12. Signed-off-by: David Ahern Link: http://lkml.kernel.org/r/1379900700-5186-3-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/config/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index 346ee929d250..5f6f9b3271bb 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -87,7 +87,7 @@ CFLAGS += -Wall CFLAGS += -Wextra CFLAGS += -std=gnu99 -EXTLIBS = -lelf -lpthread -lrt -lm +EXTLIBS = -lelf -lpthread -lrt -lm -ldl ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -Werror -fstack-protector-all,-fstack-protector-all),y) CFLAGS += -fstack-protector-all From 1f65c13efef69b6dc908e588f91a133641d8475c Mon Sep 17 00:00:00 2001 From: AKASHI Takahiro Date: Tue, 24 Sep 2013 10:00:50 +0100 Subject: [PATCH 214/523] arm64: avoid multiple evaluation of ptr in get_user/put_user() get_user() is defined as a function macro in arm64, and trace_get_user() calls it as followed: get_user(ch, ptr++); Since the second parameter occurs twice in the definition, 'ptr++' is unexpectedly evaluated twice and trace_get_user() will generate a bogus string from user-provided one. As a result, some ftrace sysfs operations, like "echo FUNCNAME > set_ftrace_filter," hit this case and eventually fail. This patch fixes the issue both in get_user() and put_user(). Signed-off-by: AKASHI Takahiro [catalin.marinas@arm.com: added __user type annotation and s/optr/__p/] Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/uaccess.h | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h index edb3d5c73a32..7ecc2b23882e 100644 --- a/arch/arm64/include/asm/uaccess.h +++ b/arch/arm64/include/asm/uaccess.h @@ -166,9 +166,10 @@ do { \ #define get_user(x, ptr) \ ({ \ + __typeof__(*(ptr)) __user *__p = (ptr); \ might_fault(); \ - access_ok(VERIFY_READ, (ptr), sizeof(*(ptr))) ? \ - __get_user((x), (ptr)) : \ + access_ok(VERIFY_READ, __p, sizeof(*__p)) ? \ + __get_user((x), __p) : \ ((x) = 0, -EFAULT); \ }) @@ -227,9 +228,10 @@ do { \ #define put_user(x, ptr) \ ({ \ + __typeof__(*(ptr)) __user *__p = (ptr); \ might_fault(); \ - access_ok(VERIFY_WRITE, (ptr), sizeof(*(ptr))) ? \ - __put_user((x), (ptr)) : \ + access_ok(VERIFY_WRITE, __p, sizeof(*__p)) ? \ + __put_user((x), __p) : \ -EFAULT; \ }) From fc18047c732f6becba92618a397555927687efd3 Mon Sep 17 00:00:00 2001 From: Matthew Leach Date: Wed, 25 Sep 2013 16:33:13 +0100 Subject: [PATCH 215/523] arm64: use correct register width when retrieving ASID The ASID is represented as an unsigned int in mm_context_t and we currently use the mmid assembler macro to access this element of the struct. This should be accessed with a register of 32-bit width. If the incorrect register width is used the ASID will be returned in bits[32:63] of the register when running under big-endian. Fix a use of the mmid macro in tlb.S to use a 32-bit access. Signed-off-by: Will Deacon Signed-off-by: Matthew Leach Signed-off-by: Catalin Marinas --- arch/arm64/mm/tlb.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/mm/tlb.S b/arch/arm64/mm/tlb.S index 8ae80a18e8ec..19da91e0cd27 100644 --- a/arch/arm64/mm/tlb.S +++ b/arch/arm64/mm/tlb.S @@ -35,7 +35,7 @@ */ ENTRY(__cpu_flush_user_tlb_range) vma_vm_mm x3, x2 // get vma->vm_mm - mmid x3, x3 // get vm_mm->context.id + mmid w3, x3 // get vm_mm->context.id dsb sy lsr x0, x0, #12 // align address lsr x1, x1, #12 From aa7fe3b0c499fb7987245ac40295af03546f2bd2 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Sun, 22 Sep 2013 13:22:09 +0300 Subject: [PATCH 216/523] perf machine: Fix path unpopulated in machine__create_modules() In machine__create_modules() the 'path' char array was used in a call to symbol__restricted_filename() without always being populated. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1379845338-29637-2-git-send-email-adrian.hunter@intel.com [ Split patch removing unrelated conversion of sprintf to snprintf to perf/core ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/machine.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index 933d14f287ca..6188d2876a71 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -792,7 +792,7 @@ static int machine__create_modules(struct machine *machine) modules = path; } - if (symbol__restricted_filename(path, "/proc/modules")) + if (symbol__restricted_filename(modules, "/proc/modules")) return -1; file = fopen(modules, "r"); From de95ab53645a2f0015e0f68ee723f18dce2b8b51 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 12 Sep 2013 08:16:38 -0700 Subject: [PATCH 217/523] perf symbols: Demangle cloned functions The libbfd C++ demangler doesn't seem to deal with cloned functions, like symbol.clone.NUM. Just strip the dot part before demangling and add it back later. Signed-off-by: Andi Kleen Link: http://lkml.kernel.org/r/1378998998-10802-1-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/symbol-elf.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index a9c829be5216..d2a888e2e058 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -928,8 +928,33 @@ int dso__load_sym(struct dso *dso, struct map *map, * to it... */ if (symbol_conf.demangle) { - demangled = bfd_demangle(NULL, elf_name, + /* + * The demangler doesn't deal with cloned functions. + * XXXX.clone.NUM or similar + * Strip the dot part and readd it later. + */ + char *p = (char *)elf_name, *dot; + dot = strchr(elf_name, '.'); + if (dot) { + p = strdup(elf_name); + if (!p) + goto new_symbol; + dot = strchr(p, '.'); + *dot = 0; + } + + demangled = bfd_demangle(NULL, p, DMGL_PARAMS | DMGL_ANSI); + if (dot) + *dot = '.'; + if (demangled && dot) { + demangled = realloc(demangled, strlen(demangled) + strlen(dot) + 1); + if (!demangled) + goto new_symbol; + strcpy(demangled + (dot - p), dot); + } + if (p != elf_name) + free(p); if (demangled != NULL) elf_name = demangled; } From 58d327da9721f7a0f6e46c8dfa5cc5546fd7078a Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 25 Sep 2013 12:04:37 -0400 Subject: [PATCH 218/523] drm/radeon: fix hdmi audio on DCE3.0/3.1 asics These asics seem to use a mix of the DCE2.x and DCE3.2 audio interfaces despite what the register spec says. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=69729 https://bugs.freedesktop.org/show_bug.cgi?id=69671 Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/r600_hdmi.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/radeon/r600_hdmi.c b/drivers/gpu/drm/radeon/r600_hdmi.c index f443010ce90b..b0fa6002af3e 100644 --- a/drivers/gpu/drm/radeon/r600_hdmi.c +++ b/drivers/gpu/drm/radeon/r600_hdmi.c @@ -257,10 +257,7 @@ void r600_audio_set_dto(struct drm_encoder *encoder, u32 clock) * number (coefficient of two integer numbers. DCCG_AUDIO_DTOx_PHASE * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator */ - if (ASIC_IS_DCE3(rdev)) { - /* according to the reg specs, this should DCE3.2 only, but in - * practice it seems to cover DCE3.0 as well. - */ + if (ASIC_IS_DCE32(rdev)) { if (dig->dig_encoder == 0) { dto_cntl = RREG32(DCCG_AUDIO_DTO0_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK; dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio); @@ -276,8 +273,21 @@ void r600_audio_set_dto(struct drm_encoder *encoder, u32 clock) WREG32(DCCG_AUDIO_DTO1_MODULE, dto_modulo); WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */ } + } else if (ASIC_IS_DCE3(rdev)) { + /* according to the reg specs, this should DCE3.2 only, but in + * practice it seems to cover DCE3.0/3.1 as well. + */ + if (dig->dig_encoder == 0) { + WREG32(DCCG_AUDIO_DTO0_PHASE, base_rate * 100); + WREG32(DCCG_AUDIO_DTO0_MODULE, clock * 100); + WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */ + } else { + WREG32(DCCG_AUDIO_DTO1_PHASE, base_rate * 100); + WREG32(DCCG_AUDIO_DTO1_MODULE, clock * 100); + WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */ + } } else { - /* according to the reg specs, this should be DCE2.0 and DCE3.0 */ + /* according to the reg specs, this should be DCE2.0 and DCE3.0/3.1 */ WREG32(AUDIO_DTO, AUDIO_DTO_PHASE(base_rate / 10) | AUDIO_DTO_MODULE(clock / 10)); } From b27b14cebfdb687e6d281d2cf82858a30796dc2a Mon Sep 17 00:00:00 2001 From: Hanjun Guo Date: Sun, 22 Sep 2013 15:42:41 +0800 Subject: [PATCH 219/523] ACPI / scan: fix typo in comments of acpi_bus_unregister_driver() "APIC" should be "ACPI" here. Signed-off-by: Hanjun Guo Signed-off-by: Rafael J. Wysocki --- drivers/acpi/scan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index fbdb82e70d10..611ce9061dc5 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1121,7 +1121,7 @@ int acpi_bus_register_driver(struct acpi_driver *driver) EXPORT_SYMBOL(acpi_bus_register_driver); /** - * acpi_bus_unregister_driver - unregisters a driver with the APIC bus + * acpi_bus_unregister_driver - unregisters a driver with the ACPI bus * @driver: driver to unregister * * Unregisters a driver with the ACPI bus. Searches the namespace for all From 5fbbf8a1a93452b26e7791cf32cefce62b0a480b Mon Sep 17 00:00:00 2001 From: Lennox Wu Date: Sat, 14 Sep 2013 13:48:37 +0800 Subject: [PATCH 220/523] Score: The commit is for compiling successfully. The modifications include: 1. Kconfig of Score: we don't support ioremap 2. Missed headfile including 3. There are some errors in other people's commit not checked by us, we fix it now 3.1 arch/score/kernel/entry.S: wrong instructions 3.2 arch/score/kernel/process.c : just some typos Signed-off-by: Lennox Wu --- arch/score/Kconfig | 4 ++++ arch/score/include/asm/io.h | 1 - arch/score/include/asm/pgalloc.h | 2 +- arch/score/kernel/entry.S | 4 ++-- arch/score/kernel/process.c | 4 ++-- 5 files changed, 9 insertions(+), 6 deletions(-) diff --git a/arch/score/Kconfig b/arch/score/Kconfig index a1be70db75fe..305f7ee1f382 100644 --- a/arch/score/Kconfig +++ b/arch/score/Kconfig @@ -2,6 +2,7 @@ menu "Machine selection" config SCORE def_bool y + select HAVE_GENERIC_HARDIRQS select GENERIC_IRQ_SHOW select GENERIC_IOMAP select GENERIC_ATOMIC64 @@ -110,3 +111,6 @@ source "security/Kconfig" source "crypto/Kconfig" source "lib/Kconfig" + +config NO_IOMEM + def_bool y diff --git a/arch/score/include/asm/io.h b/arch/score/include/asm/io.h index fbbfd7132e3b..574c8827abe2 100644 --- a/arch/score/include/asm/io.h +++ b/arch/score/include/asm/io.h @@ -5,5 +5,4 @@ #define virt_to_bus virt_to_phys #define bus_to_virt phys_to_virt - #endif /* _ASM_SCORE_IO_H */ diff --git a/arch/score/include/asm/pgalloc.h b/arch/score/include/asm/pgalloc.h index 059a61b7071b..716b3fd1d863 100644 --- a/arch/score/include/asm/pgalloc.h +++ b/arch/score/include/asm/pgalloc.h @@ -2,7 +2,7 @@ #define _ASM_SCORE_PGALLOC_H #include - +#include static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) { diff --git a/arch/score/kernel/entry.S b/arch/score/kernel/entry.S index 7234ed09b7b7..befb87d30a89 100644 --- a/arch/score/kernel/entry.S +++ b/arch/score/kernel/entry.S @@ -264,7 +264,7 @@ resume_kernel: disable_irq lw r8, [r28, TI_PRE_COUNT] cmpz.c r8 - bne r8, restore_all + bne restore_all need_resched: lw r8, [r28, TI_FLAGS] andri.c r9, r8, _TIF_NEED_RESCHED @@ -415,7 +415,7 @@ ENTRY(handle_sys) sw r9, [r0, PT_EPC] cmpi.c r27, __NR_syscalls # check syscall number - bgeu illegal_syscall + bcs illegal_syscall slli r8, r27, 2 # get syscall routine la r11, sys_call_table diff --git a/arch/score/kernel/process.c b/arch/score/kernel/process.c index f4c6d02421d3..a1519ad3d49d 100644 --- a/arch/score/kernel/process.c +++ b/arch/score/kernel/process.c @@ -78,8 +78,8 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, p->thread.reg0 = (unsigned long) childregs; if (unlikely(p->flags & PF_KTHREAD)) { memset(childregs, 0, sizeof(struct pt_regs)); - p->thread->reg12 = usp; - p->thread->reg13 = arg; + p->thread.reg12 = usp; + p->thread.reg13 = arg; p->thread.reg3 = (unsigned long) ret_from_kernel_thread; } else { *childregs = *current_pt_regs(); From 1ed62ca648557b884d117a4a8bbcf2ae4e2d1153 Mon Sep 17 00:00:00 2001 From: Lennox Wu Date: Sat, 14 Sep 2013 13:58:40 +0800 Subject: [PATCH 221/523] Score: Implement the function csum_ipv6_magic Signed-off-by: Lennox Wu --- arch/score/include/asm/checksum.h | 93 +++++++++++++++++-------------- 1 file changed, 51 insertions(+), 42 deletions(-) diff --git a/arch/score/include/asm/checksum.h b/arch/score/include/asm/checksum.h index f909ac3144a4..961bd64015a8 100644 --- a/arch/score/include/asm/checksum.h +++ b/arch/score/include/asm/checksum.h @@ -184,48 +184,57 @@ static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr, __wsum sum) { __asm__ __volatile__( - ".set\tnoreorder\t\t\t# csum_ipv6_magic\n\t" - ".set\tnoat\n\t" - "addu\t%0, %5\t\t\t# proto (long in network byte order)\n\t" - "sltu\t$1, %0, %5\n\t" - "addu\t%0, $1\n\t" - "addu\t%0, %6\t\t\t# csum\n\t" - "sltu\t$1, %0, %6\n\t" - "lw\t%1, 0(%2)\t\t\t# four words source address\n\t" - "addu\t%0, $1\n\t" - "addu\t%0, %1\n\t" - "sltu\t$1, %0, %1\n\t" - "lw\t%1, 4(%2)\n\t" - "addu\t%0, $1\n\t" - "addu\t%0, %1\n\t" - "sltu\t$1, %0, %1\n\t" - "lw\t%1, 8(%2)\n\t" - "addu\t%0, $1\n\t" - "addu\t%0, %1\n\t" - "sltu\t$1, %0, %1\n\t" - "lw\t%1, 12(%2)\n\t" - "addu\t%0, $1\n\t" - "addu\t%0, %1\n\t" - "sltu\t$1, %0, %1\n\t" - "lw\t%1, 0(%3)\n\t" - "addu\t%0, $1\n\t" - "addu\t%0, %1\n\t" - "sltu\t$1, %0, %1\n\t" - "lw\t%1, 4(%3)\n\t" - "addu\t%0, $1\n\t" - "addu\t%0, %1\n\t" - "sltu\t$1, %0, %1\n\t" - "lw\t%1, 8(%3)\n\t" - "addu\t%0, $1\n\t" - "addu\t%0, %1\n\t" - "sltu\t$1, %0, %1\n\t" - "lw\t%1, 12(%3)\n\t" - "addu\t%0, $1\n\t" - "addu\t%0, %1\n\t" - "sltu\t$1, %0, %1\n\t" - "addu\t%0, $1\t\t\t# Add final carry\n\t" - ".set\tnoat\n\t" - ".set\tnoreorder" + ".set\tvolatile\t\t\t# csum_ipv6_magic\n\t" + "add\t%0, %0, %5\t\t\t# proto (long in network byte order)\n\t" + "cmp.c\t%5, %0\n\t" + "bleu 1f\n\t" + "addi\t%0, 0x1\n\t" + "1:add\t%0, %0, %6\t\t\t# csum\n\t" + "cmp.c\t%6, %0\n\t" + "lw\t%1, [%2, 0]\t\t\t# four words source address\n\t" + "bleu 1f\n\t" + "addi\t%0, 0x1\n\t" + "1:add\t%0, %0, %1\n\t" + "cmp.c\t%1, %0\n\t" + "1:lw\t%1, [%2, 4]\n\t" + "bleu 1f\n\t" + "addi\t%0, 0x1\n\t" + "1:add\t%0, %0, %1\n\t" + "cmp.c\t%1, %0\n\t" + "lw\t%1, [%2,8]\n\t" + "bleu 1f\n\t" + "addi\t%0, 0x1\n\t" + "1:add\t%0, %0, %1\n\t" + "cmp.c\t%1, %0\n\t" + "lw\t%1, [%2, 12]\n\t" + "bleu 1f\n\t" + "addi\t%0, 0x1\n\t" + "1:add\t%0, %0,%1\n\t" + "cmp.c\t%1, %0\n\t" + "lw\t%1, [%3, 0]\n\t" + "bleu 1f\n\t" + "addi\t%0, 0x1\n\t" + "1:add\t%0, %0, %1\n\t" + "cmp.c\t%1, %0\n\t" + "lw\t%1, [%3, 4]\n\t" + "bleu 1f\n\t" + "addi\t%0, 0x1\n\t" + "1:add\t%0, %0, %1\n\t" + "cmp.c\t%1, %0\n\t" + "lw\t%1, [%3, 8]\n\t" + "bleu 1f\n\t" + "addi\t%0, 0x1\n\t" + "1:add\t%0, %0, %1\n\t" + "cmp.c\t%1, %0\n\t" + "lw\t%1, [%3, 12]\n\t" + "bleu 1f\n\t" + "addi\t%0, 0x1\n\t" + "1:add\t%0, %0, %1\n\t" + "cmp.c\t%1, %0\n\t" + "bleu 1f\n\t" + "addi\t%0, 0x1\n\t" + "1:\n\t" + ".set\toptimize" : "=r" (sum), "=r" (proto) : "r" (saddr), "r" (daddr), "0" (htonl(len)), "1" (htonl(proto)), "r" (sum)); From df9e4d1c39c472cb44d81ab2ed2db503fc486e3b Mon Sep 17 00:00:00 2001 From: Lennox Wu Date: Sat, 14 Sep 2013 14:41:22 +0800 Subject: [PATCH 222/523] Score: Modify the Makefile of Score, remove -mlong-calls for compiling Signed-off-by: Lennox Wu --- arch/score/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/score/Makefile b/arch/score/Makefile index 974aefe86123..9e3e060290e0 100644 --- a/arch/score/Makefile +++ b/arch/score/Makefile @@ -20,8 +20,8 @@ cflags-y += -G0 -pipe -mel -mnhwloop -D__SCOREEL__ \ # KBUILD_AFLAGS += $(cflags-y) KBUILD_CFLAGS += $(cflags-y) -KBUILD_AFLAGS_MODULE += -mlong-calls -KBUILD_CFLAGS_MODULE += -mlong-calls +KBUILD_AFLAGS_MODULE += +KBUILD_CFLAGS_MODULE += LDFLAGS += --oformat elf32-littlescore LDFLAGS_vmlinux += -G0 -static -nostdlib From ed38665eb50ef7ad530f9b2db531a09b8520ed32 Mon Sep 17 00:00:00 2001 From: Lennox Wu Date: Thu, 26 Sep 2013 01:41:22 +0800 Subject: [PATCH 223/523] Score: Update the information of Score maintaners Signed-off-by: Lennox Wu --- MAINTAINERS | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index b2f857c7ecf6..efd34bdeefa7 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7259,9 +7259,9 @@ F: include/linux/sched.h F: include/uapi/linux/sched.h SCORE ARCHITECTURE -M: Chen Liqin +M: Chen Liqin M: Lennox Wu -W: http://www.sunplusct.com +W: http://www.sunplus.com S: Supported F: arch/score/ From 743a7ecbe8e28d487e2573ec2b7fb1179a443717 Mon Sep 17 00:00:00 2001 From: Mikael Pettersson Date: Wed, 25 Sep 2013 22:21:55 +0200 Subject: [PATCH 224/523] update contact information for Mikael Pettersson My old @it.uu.se email address is going away, so update relevant files to point to my @gmail.com address instead. In sata_promise.c just delete the address, people can get it from MAINTAINERS. Signed-off-by: Mikael Pettersson Signed-off-by: Linus Torvalds --- CREDITS | 3 +-- MAINTAINERS | 2 +- drivers/ata/sata_promise.c | 2 +- 3 files changed, 3 insertions(+), 4 deletions(-) diff --git a/CREDITS b/CREDITS index 9416a9a8b95e..0640e1650483 100644 --- a/CREDITS +++ b/CREDITS @@ -2808,8 +2808,7 @@ S: Ottawa, Ontario S: Canada K2P 0X8 N: Mikael Pettersson -E: mikpe@it.uu.se -W: http://user.it.uu.se/~mikpe/linux/ +E: mikpelinux@gmail.com D: Miscellaneous fixes N: Reed H. Petty diff --git a/MAINTAINERS b/MAINTAINERS index b2f857c7ecf6..c53fe9559642 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6596,7 +6596,7 @@ S: Obsolete F: drivers/net/wireless/prism54/ PROMISE SATA TX2/TX4 CONTROLLER LIBATA DRIVER -M: Mikael Pettersson +M: Mikael Pettersson L: linux-ide@vger.kernel.org S: Maintained F: drivers/ata/sata_promise.* diff --git a/drivers/ata/sata_promise.c b/drivers/ata/sata_promise.c index 958ba2a420c3..97f4acb54ad6 100644 --- a/drivers/ata/sata_promise.c +++ b/drivers/ata/sata_promise.c @@ -2,7 +2,7 @@ * sata_promise.c - Promise SATA * * Maintained by: Tejun Heo - * Mikael Pettersson + * Mikael Pettersson * Please ALWAYS copy linux-ide@vger.kernel.org * on emails. * From 9b0a1de3c85d99d881c86a29b3d52da7b9c7bd61 Mon Sep 17 00:00:00 2001 From: Bin Liu Date: Tue, 17 Sep 2013 15:33:35 -0500 Subject: [PATCH 225/523] usb: musb: gadget: fix otg active status flag In gadget mode, musb->is_active should be set only when connected to the host. musb_g_reset() already takes care of it. Signed-off-by: Bin Liu Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_gadget.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index 58c029f1e74c..b19ed213ab85 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -1853,7 +1853,6 @@ static int musb_gadget_start(struct usb_gadget *g, musb->gadget_driver = driver; spin_lock_irqsave(&musb->lock, flags); - musb->is_active = 1; otg_set_peripheral(otg, &musb->g); musb->xceiv->state = OTG_STATE_B_IDLE; From d32270460fee83e22ee9e6b1bfd7b486263eeb1d Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Wed, 25 Sep 2013 14:00:02 +0200 Subject: [PATCH 226/523] drm/i915: Fix up usage of SHRINK_STOP In commit 81e49f811404f428a9d9a63295a0c267e802fa12 Author: Glauber Costa Date: Wed Aug 28 10:18:13 2013 +1000 i915: bail out earlier when shrinker cannot acquire mutex SHRINK_STOP was added to tell the core shrinker code to bail out and go to the next shrinker since the i915 shrinker couldn't acquire required locks. But the SHRINK_STOP return code was added to the ->count_objects callback and not the ->scan_objects callback as it should have been, resulting in tons of dmesg noise like shrink_slab: i915_gem_inactive_scan+0x0/0x9c negative objects to delete nr=-xxxxxxxxx Fix discusssed with Dave Chinner. References: http://www.spinics.net/lists/intel-gfx/msg33597.html Reported-by: Knut Petersen Cc: Knut Petersen Cc: Dave Chinner Cc: Glauber Costa Cc: Glauber Costa Cc: Andrew Morton Cc: Rik van Riel Cc: Mel Gorman Cc: Johannes Weiner Cc: Michal Hocko Acked-by: Dave Chinner Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_gem.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index df9253d890ee..cdfb9da0e4ce 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -4800,10 +4800,10 @@ i915_gem_inactive_count(struct shrinker *shrinker, struct shrink_control *sc) if (!mutex_trylock(&dev->struct_mutex)) { if (!mutex_is_locked_by(&dev->struct_mutex, current)) - return SHRINK_STOP; + return 0; if (dev_priv->mm.shrinker_no_lock_stealing) - return SHRINK_STOP; + return 0; unlock = false; } @@ -4901,10 +4901,10 @@ i915_gem_inactive_scan(struct shrinker *shrinker, struct shrink_control *sc) if (!mutex_trylock(&dev->struct_mutex)) { if (!mutex_is_locked_by(&dev->struct_mutex, current)) - return 0; + return SHRINK_STOP; if (dev_priv->mm.shrinker_no_lock_stealing) - return 0; + return SHRINK_STOP; unlock = false; } From f2acae69a2060b6b1029b9923dbef5e98a8a0ba7 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Wed, 25 Sep 2013 15:44:39 -0700 Subject: [PATCH 227/523] ARM: OMAP2+: Always build in board-generic We are moving to device tree based booting, so board-generic should always be built. Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/Kconfig | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index b5fb5f7992df..f6a1db112168 100644 --- a/arch/arm/mach-omap2/Kconfig +++ b/arch/arm/mach-omap2/Kconfig @@ -94,6 +94,7 @@ config ARCH_OMAP2PLUS select GENERIC_CLOCKEVENTS select GENERIC_IRQ_CHIP select HAVE_CLK + select MACH_OMAP_GENERIC select OMAP_DM_TIMER select PINCTRL select PROC_DEVICETREE if PROC_FS @@ -187,16 +188,11 @@ config OMAP_PACKAGE_CUS config OMAP_PACKAGE_CBP bool -comment "OMAP Board Type" +comment "OMAP Legacy Platform Data Board Type" depends on ARCH_OMAP2PLUS config MACH_OMAP_GENERIC - bool "Generic OMAP2+ board" - depends on ARCH_OMAP2PLUS - default y - help - Support for generic TI OMAP2+ boards using Flattened Device Tree. - More information at Documentation/devicetree + bool config MACH_OMAP2_TUSB6010 bool From 6a08e1e6f7fafa2fa5fb6a129c4c8d9c29f11b62 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Wed, 25 Sep 2013 15:44:39 -0700 Subject: [PATCH 228/523] ARM: OMAP2+: Add quirk support for legacy platform data init We want to drop the board-*.c files but keep things working. Let's make it a bit easier to support legacy platform data init with quirks. This also keeps board-generic.c clean from board specific hacks. For now, the quirks table is empty, that is populated in the later patches. Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/Makefile | 2 +- arch/arm/mach-omap2/board-generic.c | 1 + arch/arm/mach-omap2/common.h | 2 ++ arch/arm/mach-omap2/pdata-quirks.c | 39 +++++++++++++++++++++++++++++ 4 files changed, 43 insertions(+), 1 deletion(-) create mode 100644 arch/arm/mach-omap2/pdata-quirks.c diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index afb457c3135b..f8d4a1b83864 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -233,7 +233,7 @@ obj-y += drm.o endif # Specific board support -obj-$(CONFIG_MACH_OMAP_GENERIC) += board-generic.o +obj-$(CONFIG_MACH_OMAP_GENERIC) += board-generic.o pdata-quirks.o obj-$(CONFIG_MACH_OMAP_H4) += board-h4.o obj-$(CONFIG_MACH_OMAP_2430SDP) += board-2430sdp.o obj-$(CONFIG_MACH_OMAP3_BEAGLE) += board-omap3beagle.o diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c index 39c78387ddec..022b0df94e0d 100644 --- a/arch/arm/mach-omap2/board-generic.c +++ b/arch/arm/mach-omap2/board-generic.c @@ -56,6 +56,7 @@ static void __init omap_generic_init(void) omap_sdrc_init(NULL, NULL); of_platform_populate(NULL, omap_dt_match_table, NULL, NULL); + pdata_quirks_init(); /* * HACK: call display setup code for selected boards to enable omapdss. diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h index 4a5684b96492..fd059e02574d 100644 --- a/arch/arm/mach-omap2/common.h +++ b/arch/arm/mach-omap2/common.h @@ -288,6 +288,8 @@ static inline void omap4_cpu_resume(void) #endif +void pdata_quirks_init(void); + struct omap_sdrc_params; extern void omap_sdrc_init(struct omap_sdrc_params *sdrc_cs0, struct omap_sdrc_params *sdrc_cs1); diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c new file mode 100644 index 000000000000..e6051998f929 --- /dev/null +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -0,0 +1,39 @@ +/* + * Legacy platform_data quirks + * + * Copyright (C) 2013 Texas Instruments + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include +#include +#include + +#include "common.h" +#include "common-board-devices.h" +#include "dss-common.h" + +struct pdata_init { + const char *compatible; + void (*fn)(void); +}; + +static struct pdata_init pdata_quirks[] __initdata = { + { /* sentinel */ }, +}; + +void __init pdata_quirks_init(void) +{ + struct pdata_init *quirks = pdata_quirks; + + while (quirks->compatible) { + if (of_machine_is_compatible(quirks->compatible)) { + if (quirks->fn) + quirks->fn(); + break; + } + quirks++; + } +} From 3e7a318530c3d536972e9a2bb44e0ce0c16eaa4e Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Wed, 25 Sep 2013 15:44:39 -0700 Subject: [PATCH 229/523] ARM: OMAP2+: Use pdata quirk support for board-generic.c Let's use platform data quirk support for board-generic.c. This removes all board specific hacks out of board-generic.c. Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/board-generic.c | 32 ---------------------- arch/arm/mach-omap2/pdata-quirks.c | 41 +++++++++++++++++++++++++++++ 2 files changed, 41 insertions(+), 32 deletions(-) diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c index 022b0df94e0d..a66575f33973 100644 --- a/arch/arm/mach-omap2/board-generic.c +++ b/arch/arm/mach-omap2/board-generic.c @@ -15,13 +15,10 @@ #include #include #include -#include #include #include "common.h" -#include "common-board-devices.h" -#include "dss-common.h" #if !(defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)) #define intc_of_init NULL @@ -36,41 +33,12 @@ static struct of_device_id omap_dt_match_table[] __initdata = { { } }; -/* - * Create alias for USB host PHY clock. - * Remove this when clock phandle can be provided via DT - */ -static void __init legacy_init_ehci_clk(char *clkname) -{ - int ret; - - ret = clk_add_alias("main_clk", NULL, clkname, NULL); - if (ret) { - pr_err("%s:Failed to add main_clk alias to %s :%d\n", - __func__, clkname, ret); - } -} - static void __init omap_generic_init(void) { omap_sdrc_init(NULL, NULL); of_platform_populate(NULL, omap_dt_match_table, NULL, NULL); pdata_quirks_init(); - - /* - * HACK: call display setup code for selected boards to enable omapdss. - * This will be removed when omapdss supports DT. - */ - if (of_machine_is_compatible("ti,omap4-panda")) { - omap4_panda_display_init_of(); - legacy_init_ehci_clk("auxclk3_ck"); - - } - else if (of_machine_is_compatible("ti,omap4-sdp")) - omap_4430sdp_display_init_of(); - else if (of_machine_is_compatible("ti,omap5-uevm")) - legacy_init_ehci_clk("auxclk1_ck"); } #ifdef CONFIG_SOC_OMAP2420 diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index e6051998f929..648d9573aaea 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -20,7 +20,48 @@ struct pdata_init { void (*fn)(void); }; +/* + * Create alias for USB host PHY clock. + * Remove this when clock phandle can be provided via DT + */ +static void __init __used legacy_init_ehci_clk(char *clkname) +{ + int ret; + + ret = clk_add_alias("main_clk", NULL, clkname, NULL); + if (ret) + pr_err("%s:Failed to add main_clk alias to %s :%d\n", + __func__, clkname, ret); +} + +#ifdef CONFIG_ARCH_OMAP4 +static void __init omap4_sdp_legacy_init(void) +{ + omap_4430sdp_display_init_of(); +} + +static void __init omap4_panda_legacy_init(void) +{ + omap4_panda_display_init_of(); + legacy_init_ehci_clk("auxclk3_ck"); +} +#endif + +#ifdef CONFIG_SOC_OMAP5 +static void __init omap5_uevm_legacy_init(void) +{ + legacy_init_ehci_clk("auxclk1_ck"); +} +#endif + static struct pdata_init pdata_quirks[] __initdata = { +#ifdef CONFIG_ARCH_OMAP4 + { "ti,omap4-sdp", omap4_sdp_legacy_init, }, + { "ti,omap4-panda", omap4_panda_legacy_init, }, +#endif +#ifdef CONFIG_SOC_OMAP5 + { "ti,omap5-uevm", omap5_uevm_legacy_init, }, +#endif { /* sentinel */ }, }; From 5f0a2c6976d0bfaeda1eaba1837f28e5a3146a69 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Wed, 25 Sep 2013 15:44:40 -0700 Subject: [PATCH 230/523] ARM: OMAP2+: Use pdata quirks for wl12xx legacy init Let's use the platform data quirk support for wl12xx and move the board specific code out of devices.c. Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/devices.c | 38 ------------------------------ arch/arm/mach-omap2/pdata-quirks.c | 33 ++++++++++++++++++++++++++ 2 files changed, 33 insertions(+), 38 deletions(-) diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c index 5c5315ba129b..5336c75926cd 100644 --- a/arch/arm/mach-omap2/devices.c +++ b/arch/arm/mach-omap2/devices.c @@ -19,7 +19,6 @@ #include #include #include -#include #include #include @@ -475,40 +474,6 @@ static void omap_init_vout(void) static inline void omap_init_vout(void) {} #endif -#if IS_ENABLED(CONFIG_WL12XX) - -static struct wl12xx_platform_data wl12xx __initdata; - -void __init omap_init_wl12xx_of(void) -{ - int ret; - - if (!of_have_populated_dt()) - return; - - if (of_machine_is_compatible("ti,omap4-sdp")) { - wl12xx.board_ref_clock = WL12XX_REFCLOCK_26; - wl12xx.board_tcxo_clock = WL12XX_TCXOCLOCK_26; - wl12xx.irq = gpio_to_irq(53); - } else if (of_machine_is_compatible("ti,omap4-panda")) { - wl12xx.board_ref_clock = WL12XX_REFCLOCK_38; - wl12xx.irq = gpio_to_irq(53); - } else { - return; - } - - ret = wl12xx_set_platform_data(&wl12xx); - if (ret) { - pr_err("error setting wl12xx data: %d\n", ret); - return; - } -} -#else -static inline void omap_init_wl12xx_of(void) -{ -} -#endif - /*-------------------------------------------------------------------------*/ static int __init omap2_init_devices(void) @@ -531,9 +496,6 @@ static int __init omap2_init_devices(void) omap_init_sham(); omap_init_aes(); omap_init_rng(); - } else { - /* These can be removed when bindings are done */ - omap_init_wl12xx_of(); } omap_init_sti(); omap_init_vout(); diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index 648d9573aaea..04bfa647a934 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -8,8 +8,10 @@ * published by the Free Software Foundation. */ #include +#include #include #include +#include #include "common.h" #include "common-board-devices.h" @@ -34,16 +36,47 @@ static void __init __used legacy_init_ehci_clk(char *clkname) __func__, clkname, ret); } +#if IS_ENABLED(CONFIG_WL12XX) + +static struct wl12xx_platform_data wl12xx __initdata; + +static void __init __used legacy_init_wl12xx(unsigned ref_clock, + unsigned tcxo_clock, + int gpio) +{ + int res; + + wl12xx.board_ref_clock = ref_clock; + wl12xx.board_tcxo_clock = tcxo_clock; + wl12xx.irq = gpio_to_irq(gpio); + + res = wl12xx_set_platform_data(&wl12xx); + if (res) { + pr_err("error setting wl12xx data: %d\n", res); + return; + } +} +#else +static inline void legacy_init_wl12xx(unsigned ref_clock, + unsigned tcxo_clock, + int gpio) +{ +} +#endif + #ifdef CONFIG_ARCH_OMAP4 static void __init omap4_sdp_legacy_init(void) { omap_4430sdp_display_init_of(); + legacy_init_wl12xx(WL12XX_REFCLOCK_26, + WL12XX_TCXOCLOCK_26, 53); } static void __init omap4_panda_legacy_init(void) { omap4_panda_display_init_of(); legacy_init_ehci_clk("auxclk3_ck"); + legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53); } #endif From faf4bd47b06d8c92610cda8d49bfe4b79f79f74f Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Tue, 24 Sep 2013 22:28:15 +0300 Subject: [PATCH 231/523] ARM: OMAP2+: pdata-quirks: set internal clock source for MMC2 on N950/N9 Set internal clock source for MMC2 on N950/N9. Signed-off-by: Aaro Koskinen Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/pdata-quirks.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index 04bfa647a934..3d472dbb9205 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -16,6 +16,7 @@ #include "common.h" #include "common-board-devices.h" #include "dss-common.h" +#include "control.h" struct pdata_init { const char *compatible; @@ -64,6 +65,17 @@ static inline void legacy_init_wl12xx(unsigned ref_clock, } #endif +#ifdef CONFIG_ARCH_OMAP3 +static void __init hsmmc2_internal_input_clk(void) +{ + u32 reg; + + reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1); + reg |= OMAP2_MMCSDIO2ADPCLKISEL; + omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1); +} +#endif /* CONFIG_ARCH_OMAP3 */ + #ifdef CONFIG_ARCH_OMAP4 static void __init omap4_sdp_legacy_init(void) { @@ -88,6 +100,10 @@ static void __init omap5_uevm_legacy_init(void) #endif static struct pdata_init pdata_quirks[] __initdata = { +#ifdef CONFIG_ARCH_OMAP3 + { "nokia,omap3-n9", hsmmc2_internal_input_clk, }, + { "nokia,omap3-n950", hsmmc2_internal_input_clk, }, +#endif #ifdef CONFIG_ARCH_OMAP4 { "ti,omap4-sdp", omap4_sdp_legacy_init, }, { "ti,omap4-panda", omap4_panda_legacy_init, }, From 430b849a5e0ad5875da5bc5e10b072844dcf600f Mon Sep 17 00:00:00 2001 From: Thomas Meyer Date: Thu, 19 Sep 2013 23:45:46 +0200 Subject: [PATCH 232/523] staging: lustre: Cocci spatch "noderef" sizeof when applied to a pointer typed expression gives the size of the pointer. Found by coccinelle spatch "misc/noderef.cocci" Signed-off-by: Thomas Meyer Signed-off-by: Greg Kroah-Hartman --- drivers/staging/lustre/lustre/obdecho/echo_client.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/lustre/lustre/obdecho/echo_client.c b/drivers/staging/lustre/lustre/obdecho/echo_client.c index 2644edf438c1..c8b43442dc74 100644 --- a/drivers/staging/lustre/lustre/obdecho/echo_client.c +++ b/drivers/staging/lustre/lustre/obdecho/echo_client.c @@ -1387,7 +1387,7 @@ echo_copyout_lsm (struct lov_stripe_md *lsm, void *_ulsm, int ulsm_nob) if (nob > ulsm_nob) return (-EINVAL); - if (copy_to_user (ulsm, lsm, sizeof(ulsm))) + if (copy_to_user (ulsm, lsm, sizeof(*ulsm))) return (-EFAULT); for (i = 0; i < lsm->lsm_stripe_count; i++) { From 599aa6975e7a26ba1fee6a1eee21f46c2730890e Mon Sep 17 00:00:00 2001 From: Lidza Louina Date: Mon, 23 Sep 2013 16:13:15 -0400 Subject: [PATCH 233/523] MAINTAINERS: staging: dgnc and dgap drivers: add maintainer This patch adds the staging/dgnc [DIGI NEO AND CLASSIC PCI PRODUCTS] and staging/dgap [DIGI EPCA PCI PRODUCTS] drivers to the MAINTAINERS file. I am listed as the maintainer and the driverdev-devel list is the mailing list for these drivers. Signed-off-by: Lidza Louina Signed-off-by: Greg Kroah-Hartman --- MAINTAINERS | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index e61c2e83fc2b..7a426bac60e8 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2639,6 +2639,18 @@ F: include/linux/device-mapper.h F: include/linux/dm-*.h F: include/uapi/linux/dm-*.h +DIGI NEO AND CLASSIC PCI PRODUCTS +M: Lidza Louina +L: driverdev-devel@linuxdriverproject.org +S: Maintained +F: drivers/staging/dgnc/ + +DIGI EPCA PCI PRODUCTS +M: Lidza Louina +L: driverdev-devel@linuxdriverproject.org +S: Maintained +F: drivers/staging/dgap/ + DIOLAN U2C-12 I2C DRIVER M: Guenter Roeck L: linux-i2c@vger.kernel.org From f6853448667b3b3234331b22d34d7158b12237fd Mon Sep 17 00:00:00 2001 From: Thomas Meyer Date: Thu, 19 Sep 2013 23:45:46 +0200 Subject: [PATCH 234/523] staging: r8188eu: Add files for new drive: Cocci spatch "noderef" sizeof when applied to a pointer typed expression gives the size of the pointer. Found by coccinelle spatch "misc/noderef.cocci" Signed-off-by: Thomas Meyer Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rtl8188eu/hal/rtl8188e_dm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/rtl8188eu/hal/rtl8188e_dm.c b/drivers/staging/rtl8188eu/hal/rtl8188e_dm.c index 9c2e7a20c09e..ec0028d4e61a 100644 --- a/drivers/staging/rtl8188eu/hal/rtl8188e_dm.c +++ b/drivers/staging/rtl8188eu/hal/rtl8188e_dm.c @@ -57,7 +57,7 @@ static void Init_ODM_ComInfo_88E(struct adapter *Adapter) u8 cut_ver, fab_ver; /* Init Value */ - _rtw_memset(dm_odm, 0, sizeof(dm_odm)); + _rtw_memset(dm_odm, 0, sizeof(*dm_odm)); dm_odm->Adapter = Adapter; From 0a69bb4691662054596f48b9a1cab8f9323442c8 Mon Sep 17 00:00:00 2001 From: Thomas Meyer Date: Thu, 19 Sep 2013 23:45:46 +0200 Subject: [PATCH 235/523] staging: octeon-usb: Cocci spatch "noderef" sizeof when applied to a pointer typed expression gives the size of the pointer. Found by coccinelle spatch "misc/noderef.cocci" Signed-off-by: Thomas Meyer Signed-off-by: Greg Kroah-Hartman --- drivers/staging/octeon-usb/cvmx-usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/octeon-usb/cvmx-usb.c b/drivers/staging/octeon-usb/cvmx-usb.c index d7b3c82b5ead..45dfe94199ae 100644 --- a/drivers/staging/octeon-usb/cvmx-usb.c +++ b/drivers/staging/octeon-usb/cvmx-usb.c @@ -604,7 +604,7 @@ int cvmx_usb_initialize(struct cvmx_usb_state *state, int usb_port_number, } } - memset(usb, 0, sizeof(usb)); + memset(usb, 0, sizeof(*usb)); usb->init_flags = flags; /* Initialize the USB state structure */ From 5a2d8292f1051c1d1c08fc1732c74ac12ef61452 Mon Sep 17 00:00:00 2001 From: Thomas Meyer Date: Thu, 19 Sep 2013 23:45:46 +0200 Subject: [PATCH 236/523] staging: r8188eu: Cocci spatch "noderef" sizeof when applied to a pointer typed expression gives the size of the pointer. Found by coccinelle spatch "misc/noderef.cocci" Signed-off-by: Thomas Meyer Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rtl8188eu/os_dep/ioctl_linux.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c index cd4100fb3645..95953ebc0279 100644 --- a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c +++ b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c @@ -6973,7 +6973,7 @@ static int rtw_mp_ctx(struct net_device *dev, stop = strncmp(extra, "stop", 4); sscanf(extra, "count =%d, pkt", &count); - _rtw_memset(extra, '\0', sizeof(extra)); + _rtw_memset(extra, '\0', sizeof(*extra)); if (stop == 0) { bStartTest = 0; /* To set Stop */ From ffceff44e45c29943286428d246516e8e9d093d9 Mon Sep 17 00:00:00 2001 From: Thomas Meyer Date: Thu, 19 Sep 2013 23:45:46 +0200 Subject: [PATCH 237/523] staging: r8188eu: Add files for new drive: Cocci spatch "noderef" sizeof when applied to a pointer typed expression gives the size of the pointer. Found by coccinelle spatch "misc/noderef.cocci" Signed-off-by: Thomas Meyer Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rtl8188eu/core/rtw_mp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/rtl8188eu/core/rtw_mp.c b/drivers/staging/rtl8188eu/core/rtw_mp.c index c7ff2e4d1f23..9832dcbbd07f 100644 --- a/drivers/staging/rtl8188eu/core/rtw_mp.c +++ b/drivers/staging/rtl8188eu/core/rtw_mp.c @@ -907,7 +907,7 @@ u32 mp_query_psd(struct adapter *pAdapter, u8 *data) sscanf(data, "pts =%d, start =%d, stop =%d", &psd_pts, &psd_start, &psd_stop); } - _rtw_memset(data, '\0', sizeof(data)); + _rtw_memset(data, '\0', sizeof(*data)); i = psd_start; while (i < psd_stop) { From 3ff4afe80e50ff4e84b4a59a38a6a657d1e7fdd1 Mon Sep 17 00:00:00 2001 From: Tobias Polzer Date: Wed, 18 Sep 2013 18:04:59 +0200 Subject: [PATCH 238/523] staging: usbip: Orphan usbip The domain of Matt Mooneey's email doesn't exist anymore. Setting usbip to Oprhan. Signed-off-by: Tobias Polzer Signed-off-by: Dominik Paulus Signed-off-by: Greg Kroah-Hartman --- MAINTAINERS | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index 7a426bac60e8..fd4f58308a32 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8736,9 +8736,8 @@ F: Documentation/hid/hiddev.txt F: drivers/hid/usbhid/ USB/IP DRIVERS -M: Matt Mooney L: linux-usb@vger.kernel.org -S: Maintained +S: Orphan F: drivers/staging/usbip/ USB ISP116X DRIVER From c3aed2312fd3c74e77e049b795e092689d414474 Mon Sep 17 00:00:00 2001 From: Iker Pedrosa Date: Fri, 20 Sep 2013 17:11:27 +0200 Subject: [PATCH 239/523] Staging: rtl8192u: r819xU_cmdpkt: checking NULL value after doing dev_alloc_skb Checking the return of dev_alloc_skb as stated in the following bug: https://bugzilla.kernel.org/show_bug.cgi?id=60411 Signed-off-by: Iker Pedrosa Reported-by: RUC_Soft_Sec rucsoftsec@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rtl8192u/r819xU_cmdpkt.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/rtl8192u/r819xU_cmdpkt.c b/drivers/staging/rtl8192u/r819xU_cmdpkt.c index 5bc361b16d4c..56144014b7c9 100644 --- a/drivers/staging/rtl8192u/r819xU_cmdpkt.c +++ b/drivers/staging/rtl8192u/r819xU_cmdpkt.c @@ -37,6 +37,8 @@ rt_status SendTxCommandPacket(struct net_device *dev, void *pData, u32 DataLen) /* Get TCB and local buffer from common pool. (It is shared by CmdQ, MgntQ, and USB coalesce DataQ) */ skb = dev_alloc_skb(USB_HWDESC_HEADER_LEN + DataLen + 4); + if (!skb) + return RT_STATUS_FAILURE; memcpy((unsigned char *)(skb->cb), &dev, sizeof(dev)); tcb_desc = (cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE); tcb_desc->queue_index = TXCMD_QUEUE; From 18e35e081e1bb129c6dc5a5874c260a613cd13d7 Mon Sep 17 00:00:00 2001 From: Malcolm Priestley Date: Sun, 22 Sep 2013 20:15:58 +0100 Subject: [PATCH 240/523] staging: vt6656: rxtx.c [BUG] s_vGetFreeContext dead lock on null apTD. There seems to be race condition that the device is ndo_start_xmit at a point where the device is closing and apTD is NULL resulting in dead lock. Add a NULL check to apTD and return NULL to calling functions. This is more likely on 64 bit systems. Signed-off-by: Malcolm Priestley Signed-off-by: Greg Kroah-Hartman --- drivers/staging/vt6656/rxtx.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/vt6656/rxtx.c b/drivers/staging/vt6656/rxtx.c index fb743a8811bb..14f3e852215d 100644 --- a/drivers/staging/vt6656/rxtx.c +++ b/drivers/staging/vt6656/rxtx.c @@ -148,6 +148,8 @@ static void *s_vGetFreeContext(struct vnt_private *pDevice) DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"GetFreeContext()\n"); for (ii = 0; ii < pDevice->cbTD; ii++) { + if (!pDevice->apTD[ii]) + return NULL; pContext = pDevice->apTD[ii]; if (pContext->bBoolInUse == false) { pContext->bBoolInUse = true; From e3eb270fab7734427dd8171a93e4946fe28674bc Mon Sep 17 00:00:00 2001 From: Malcolm Priestley Date: Sun, 22 Sep 2013 19:48:54 +0100 Subject: [PATCH 241/523] staging: vt6656: [BUG] main_usb.c oops on device_close move flag earlier. The vt6656 is prone to resetting on the usb bus. It seems there is a race condition and wpa supplicant is trying to open the device via iw_handlers before its actually closed at a stage that the buffers are being removed. The device is longer considered open when the buffers are being removed. So move ~DEVICE_FLAGS_OPENED flag to before freeing the device buffers. Signed-off-by: Malcolm Priestley Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/staging/vt6656/main_usb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c index 536971786ae8..6f9d28182445 100644 --- a/drivers/staging/vt6656/main_usb.c +++ b/drivers/staging/vt6656/main_usb.c @@ -1098,6 +1098,8 @@ static int device_close(struct net_device *dev) memset(pMgmt->abyCurrBSSID, 0, 6); pMgmt->eCurrState = WMAC_STATE_IDLE; + pDevice->flags &= ~DEVICE_FLAGS_OPENED; + device_free_tx_bufs(pDevice); device_free_rx_bufs(pDevice); device_free_int_bufs(pDevice); @@ -1109,7 +1111,6 @@ static int device_close(struct net_device *dev) usb_free_urb(pDevice->pInterruptURB); BSSvClearNodeDBTable(pDevice, 0); - pDevice->flags &=(~DEVICE_FLAGS_OPENED); DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "device_close2 \n"); From 5e8c3d3e41b0bf241e830a1ee0752405adecc050 Mon Sep 17 00:00:00 2001 From: Malcolm Priestley Date: Mon, 23 Sep 2013 20:30:42 +0100 Subject: [PATCH 242/523] staging: vt6656: [BUG] iwctl_siwencodeext return if device not open Don't allow entry to iwctl_siwencodeext if device not open. This fixes a race condition where wpa supplicant/network manager enters the function when the device is already closed. Signed-off-by: Malcolm Priestley Cc: stable@vger.kernel.org # 3.8+ Signed-off-by: Greg Kroah-Hartman --- drivers/staging/vt6656/iwctl.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/staging/vt6656/iwctl.c b/drivers/staging/vt6656/iwctl.c index d0cf7d8a20e5..8872e0f84f40 100644 --- a/drivers/staging/vt6656/iwctl.c +++ b/drivers/staging/vt6656/iwctl.c @@ -1634,6 +1634,9 @@ int iwctl_siwencodeext(struct net_device *dev, struct iw_request_info *info, if (pMgmt == NULL) return -EFAULT; + if (!(pDevice->flags & DEVICE_FLAGS_OPENED)) + return -ENODEV; + buf = kzalloc(sizeof(struct viawget_wpa_param), GFP_KERNEL); if (buf == NULL) return -ENOMEM; From 099326d8cde12b4aa056fbb3ee05d78e5629df02 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Tue, 17 Sep 2013 14:53:23 -0300 Subject: [PATCH 243/523] staging: imx-drm: Fix probe failure Since commit b5dc0d10 (drm/imx: kill firstopen callback) the following probe failure is seen: [drm] Supports vblank timestamp caching Rev 1 (10.10.2010). [drm] No driver support for vblank timestamp query. [drm] Initialized imx-drm 1.0.0 20120507 on minor 0 imx-ldb ldb.10: adding encoder failed with -16 imx-ldb: probe of ldb.10 failed with error -16 imx-ipuv3 2400000.ipu: IPUv3H probed imx-ipuv3 2800000.ipu: IPUv3H probed imx-ipuv3-crtc imx-ipuv3-crtc.0: adding crtc failed with -16. imx-ipuv3-crtc: probe of imx-ipuv3-crtc.0 failed with error -16 imx-ipuv3-crtc imx-ipuv3-crtc.1: adding crtc failed with -16. imx-ipuv3-crtc: probe of imx-ipuv3-crtc.1 failed with error -16 imx-ipuv3-crtc imx-ipuv3-crtc.2: adding crtc failed with -16. imx-ipuv3-crtc: probe of imx-ipuv3-crtc.2 failed with error -16 imx-ipuv3-crtc imx-ipuv3-crtc.3: adding crtc failed with -16. imx-ipuv3-crtc: probe of imx-ipuv3-crtc.3 failed with error -16 The reason for the probe failure is that now 'imxdrm->references' is incremented early in imx_drm_driver_load(), so the following checks in imx_drm_add_crtc() and imx_drm_add_encoder(): if (imxdrm->references) { ret = -EBUSY; goto err_busy; } ,will always fail. Instead of manually keeping the references in the imx-drm driver, let's use drm->open_count. After this patch, lvds panel is functional on a mx6qsabrelite board. Signed-off-by: Fabio Estevam Acked-by: Sascha Hauer Signed-off-by: Greg Kroah-Hartman --- drivers/staging/imx-drm/imx-drm-core.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/staging/imx-drm/imx-drm-core.c b/drivers/staging/imx-drm/imx-drm-core.c index 47c5888461ff..a2e52a0c53c9 100644 --- a/drivers/staging/imx-drm/imx-drm-core.c +++ b/drivers/staging/imx-drm/imx-drm-core.c @@ -41,7 +41,6 @@ struct imx_drm_device { struct list_head encoder_list; struct list_head connector_list; struct mutex mutex; - int references; int pipes; struct drm_fbdev_cma *fbhelper; }; @@ -241,8 +240,6 @@ struct drm_device *imx_drm_device_get(void) } } - imxdrm->references++; - return imxdrm->drm; unwind_crtc: @@ -280,8 +277,6 @@ void imx_drm_device_put(void) list_for_each_entry(enc, &imxdrm->encoder_list, list) module_put(enc->owner); - imxdrm->references--; - mutex_unlock(&imxdrm->mutex); } EXPORT_SYMBOL_GPL(imx_drm_device_put); @@ -485,7 +480,7 @@ int imx_drm_add_crtc(struct drm_crtc *crtc, mutex_lock(&imxdrm->mutex); - if (imxdrm->references) { + if (imxdrm->drm->open_count) { ret = -EBUSY; goto err_busy; } @@ -564,7 +559,7 @@ int imx_drm_add_encoder(struct drm_encoder *encoder, mutex_lock(&imxdrm->mutex); - if (imxdrm->references) { + if (imxdrm->drm->open_count) { ret = -EBUSY; goto err_busy; } @@ -709,7 +704,7 @@ int imx_drm_add_connector(struct drm_connector *connector, mutex_lock(&imxdrm->mutex); - if (imxdrm->references) { + if (imxdrm->drm->open_count) { ret = -EBUSY; goto err_busy; } From 05c715f2a924dae2b2f6396b0109013a24502f2c Mon Sep 17 00:00:00 2001 From: Steve French Date: Wed, 25 Sep 2013 18:58:13 -0500 Subject: [PATCH 244/523] [CIFS] Remove ext2 flags that have been moved to fs.h These flags were unused by cifs and since the EXT flags have been moved to common code in uapi/linux/fs.h we won't need to have a cifs specific copy. Signed-off-by: Steve French --- fs/cifs/cifspdu.h | 21 +-------------------- 1 file changed, 1 insertion(+), 20 deletions(-) diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h index 948676db8e2e..a630475e421c 100644 --- a/fs/cifs/cifspdu.h +++ b/fs/cifs/cifspdu.h @@ -2652,26 +2652,7 @@ typedef struct file_xattr_info { } __attribute__((packed)) FILE_XATTR_INFO; /* extended attribute info level 0x205 */ - -/* flags for chattr command */ -#define EXT_SECURE_DELETE 0x00000001 /* EXT3_SECRM_FL */ -#define EXT_ENABLE_UNDELETE 0x00000002 /* EXT3_UNRM_FL */ -/* Reserved for compress file 0x4 */ -#define EXT_SYNCHRONOUS 0x00000008 /* EXT3_SYNC_FL */ -#define EXT_IMMUTABLE_FL 0x00000010 /* EXT3_IMMUTABLE_FL */ -#define EXT_OPEN_APPEND_ONLY 0x00000020 /* EXT3_APPEND_FL */ -#define EXT_DO_NOT_BACKUP 0x00000040 /* EXT3_NODUMP_FL */ -#define EXT_NO_UPDATE_ATIME 0x00000080 /* EXT3_NOATIME_FL */ -/* 0x100 through 0x800 reserved for compression flags and are GET-ONLY */ -#define EXT_HASH_TREE_INDEXED_DIR 0x00001000 /* GET-ONLY EXT3_INDEX_FL */ -/* 0x2000 reserved for IMAGIC_FL */ -#define EXT_JOURNAL_THIS_FILE 0x00004000 /* GET-ONLY EXT3_JOURNAL_DATA_FL */ -/* 0x8000 reserved for EXT3_NOTAIL_FL */ -#define EXT_SYNCHRONOUS_DIR 0x00010000 /* EXT3_DIRSYNC_FL */ -#define EXT_TOPDIR 0x00020000 /* EXT3_TOPDIR_FL */ - -#define EXT_SET_MASK 0x000300FF -#define EXT_GET_MASK 0x0003DFFF +/* flags for lsattr and chflags commands removed arein uapi/linux/fs.h */ typedef struct file_chattr_info { __le64 mask; /* list of all possible attribute bits */ From ffe67b58595eda992f369de7ac4d0a9b165074fd Mon Sep 17 00:00:00 2001 From: Steve French Date: Wed, 25 Sep 2013 19:01:27 -0500 Subject: [PATCH 245/523] [CIFS] update cifs.ko version To 2.02 Signed-off-by: Steve French --- fs/cifs/cifsfs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h index ea723a5e8226..6d0b07217ac9 100644 --- a/fs/cifs/cifsfs.h +++ b/fs/cifs/cifsfs.h @@ -132,5 +132,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); extern const struct export_operations cifs_export_ops; #endif /* CONFIG_CIFS_NFSD_EXPORT */ -#define CIFS_VERSION "2.01" +#define CIFS_VERSION "2.02" #endif /* _CIFSFS_H */ From 8937669fd637e2edff05973cb1fdee5f910cbcc7 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 24 Sep 2013 15:48:05 -0400 Subject: [PATCH 246/523] USB: iMX21: accept very late isochronous URBs Commit 24f531371de1 (USB: EHCI: accept very late isochronous URBs) changed the isochronous API provided by ehci-hcd. URBs submitted too late, so that the time slots for all their packets have already expired, are no longer rejected outright. Instead the submission is accepted, and the URB completes normally with a -EXDEV error for each packet. This is what client drivers expect. The same policy should be implemented in imx21-hcd, but I don't know enough about the hardware to do it. As a second-best substitute, this patch treats very late isochronous submissions as though the URB_ISO_ASAP flag were set. I don't have any way to test this change, unfortunately. Signed-off-by: Alan Stern CC: Sascha Hauer CC: Martin Fuzzey Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/imx21-hcd.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/imx21-hcd.c b/drivers/usb/host/imx21-hcd.c index 60a5de505ca1..adb01d950a16 100644 --- a/drivers/usb/host/imx21-hcd.c +++ b/drivers/usb/host/imx21-hcd.c @@ -824,13 +824,13 @@ static int imx21_hc_urb_enqueue_isoc(struct usb_hcd *hcd, i = DIV_ROUND_UP(wrap_frame( cur_frame - urb->start_frame), urb->interval); - if (urb->transfer_flags & URB_ISO_ASAP) { + + /* Treat underruns as if URB_ISO_ASAP was set */ + if ((urb->transfer_flags & URB_ISO_ASAP) || + i >= urb->number_of_packets) { urb->start_frame = wrap_frame(urb->start_frame + i * urb->interval); i = 0; - } else if (i >= urb->number_of_packets) { - ret = -EXDEV; - goto alloc_dmem_failed; } } } From bef073b067a7b1874a6b381e0035bb0516d71a77 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 24 Sep 2013 15:47:20 -0400 Subject: [PATCH 247/523] USB: UHCI: accept very late isochronous URBs Commit 24f531371de1 (USB: EHCI: accept very late isochronous URBs) changed the isochronous API provided by ehci-hcd. URBs submitted too late, so that the time slots for all their packets have already expired, are no longer rejected outright. Instead the submission is accepted, and the URB completes normally with a -EXDEV error for each packet. This is what client drivers expect. This patch implements the same policy in uhci-hcd. It should be applied to all kernels containing commit c44b225077bb (UHCI: implement new semantics for URB_ISO_ASAP). Signed-off-by: Alan Stern CC: Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/uhci-q.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c index 041c6ddb695c..da6f56d996ce 100644 --- a/drivers/usb/host/uhci-q.c +++ b/drivers/usb/host/uhci-q.c @@ -1303,7 +1303,7 @@ static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb, } /* Fell behind? */ - if (uhci_frame_before_eq(frame, next)) { + if (!uhci_frame_before_eq(next, frame)) { /* USB_ISO_ASAP: Round up to the first available slot */ if (urb->transfer_flags & URB_ISO_ASAP) @@ -1311,13 +1311,17 @@ static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb, -qh->period; /* - * Not ASAP: Use the next slot in the stream. If - * the entire URB falls before the threshold, fail. + * Not ASAP: Use the next slot in the stream, + * no matter what. */ else if (!uhci_frame_before_eq(next, frame + (urb->number_of_packets - 1) * qh->period)) - return -EXDEV; + dev_dbg(uhci_dev(uhci), "iso underrun %p (%u+%u < %u)\n", + urb, frame, + (urb->number_of_packets - 1) * + qh->period, + next); } } From a8693424c751b8247ee19bd8b857f1d4f432b972 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 24 Sep 2013 15:46:45 -0400 Subject: [PATCH 248/523] USB: OHCI: accept very late isochronous URBs Commit 24f531371de1 (USB: EHCI: accept very late isochronous URBs) changed the isochronous API provided by ehci-hcd. URBs submitted too late, so that the time slots for all their packets have already expired, are no longer rejected outright. Instead the submission is accepted, and the URB completes normally with a -EXDEV error for each packet. This is what client drivers expect. This patch implements the same policy in ohci-hcd. The change is more complicated than it was in ehci-hcd, because ohci-hcd doesn't scan for isochronous completions in the same way as ehci-hcd does. Rather, it depends on the hardware adding completed TDs to a "done queue". Some OHCI controller don't handle this properly when a TD's time slot has already expired, so we have to avoid adding such TDs to the schedule in the first place. As a result, if the URB was submitted too late then none of its TDs will get put on the schedule, so none of them will end up on the done queue, so the driver will never realize that the URB should be completed. To solve this problem, the patch adds one to urb_priv->td_cnt for such URBs, making it larger than urb_priv->length (td_cnt already gets set to the number of TD's that had to be skipped because their slots have expired). Each time an URB is given back, the finish_urb() routine looks to see if urb_priv->td_cnt for the next URB on the same endpoint is marked in this way. If so, it gives back the next URB right away. This should be applied to all kernels containing commit 815fa7b91761 (USB: OHCI: fix logic for scheduling isochronous URBs). Signed-off-by: Alan Stern CC: Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ohci-hcd.c | 22 ++++++++++++---------- drivers/usb/host/ohci-q.c | 26 ++++++++++++++++++++++---- 2 files changed, 34 insertions(+), 14 deletions(-) diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index 8f6b695af6a4..604cad1bcf9c 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -216,31 +216,26 @@ static int ohci_urb_enqueue ( frame &= ~(ed->interval - 1); frame |= ed->branch; urb->start_frame = frame; + ed->last_iso = frame + ed->interval * (size - 1); } } else if (ed->type == PIPE_ISOCHRONOUS) { u16 next = ohci_frame_no(ohci) + 1; u16 frame = ed->last_iso + ed->interval; + u16 length = ed->interval * (size - 1); /* Behind the scheduling threshold? */ if (unlikely(tick_before(frame, next))) { - /* USB_ISO_ASAP: Round up to the first available slot */ + /* URB_ISO_ASAP: Round up to the first available slot */ if (urb->transfer_flags & URB_ISO_ASAP) { frame += (next - frame + ed->interval - 1) & -ed->interval; /* - * Not ASAP: Use the next slot in the stream. If - * the entire URB falls before the threshold, fail. + * Not ASAP: Use the next slot in the stream, + * no matter what. */ } else { - if (tick_before(frame + ed->interval * - (urb->number_of_packets - 1), next)) { - retval = -EXDEV; - usb_hcd_unlink_urb_from_ep(hcd, urb); - goto fail; - } - /* * Some OHCI hardware doesn't handle late TDs * correctly. After retiring them it proceeds @@ -251,9 +246,16 @@ static int ohci_urb_enqueue ( urb_priv->td_cnt = DIV_ROUND_UP( (u16) (next - frame), ed->interval); + if (urb_priv->td_cnt >= urb_priv->length) { + ++urb_priv->td_cnt; /* Mark it */ + ohci_dbg(ohci, "iso underrun %p (%u+%u < %u)\n", + urb, frame, length, + next); + } } } urb->start_frame = frame; + ed->last_iso = frame + length; } /* fill the TDs and link them to the ed; and diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c index df4a6707322d..e7f577e63624 100644 --- a/drivers/usb/host/ohci-q.c +++ b/drivers/usb/host/ohci-q.c @@ -41,9 +41,13 @@ finish_urb(struct ohci_hcd *ohci, struct urb *urb, int status) __releases(ohci->lock) __acquires(ohci->lock) { - struct device *dev = ohci_to_hcd(ohci)->self.controller; + struct device *dev = ohci_to_hcd(ohci)->self.controller; + struct usb_host_endpoint *ep = urb->ep; + struct urb_priv *urb_priv; + // ASSERT (urb->hcpriv != 0); + restart: urb_free_priv (ohci, urb->hcpriv); urb->hcpriv = NULL; if (likely(status == -EINPROGRESS)) @@ -80,6 +84,21 @@ __acquires(ohci->lock) ohci->hc_control &= ~(OHCI_CTRL_PLE|OHCI_CTRL_IE); ohci_writel (ohci, ohci->hc_control, &ohci->regs->control); } + + /* + * An isochronous URB that is sumitted too late won't have any TDs + * (marked by the fact that the td_cnt value is larger than the + * actual number of TDs). If the next URB on this endpoint is like + * that, give it back now. + */ + if (!list_empty(&ep->urb_list)) { + urb = list_first_entry(&ep->urb_list, struct urb, urb_list); + urb_priv = urb->hcpriv; + if (urb_priv->td_cnt > urb_priv->length) { + status = 0; + goto restart; + } + } } @@ -546,7 +565,6 @@ td_fill (struct ohci_hcd *ohci, u32 info, td->hwCBP = cpu_to_hc32 (ohci, data & 0xFFFFF000); *ohci_hwPSWp(ohci, td, 0) = cpu_to_hc16 (ohci, (data & 0x0FFF) | 0xE000); - td->ed->last_iso = info & 0xffff; } else { td->hwCBP = cpu_to_hc32 (ohci, data); } @@ -996,7 +1014,7 @@ rescan_this: urb_priv->td_cnt++; /* if URB is done, clean up */ - if (urb_priv->td_cnt == urb_priv->length) { + if (urb_priv->td_cnt >= urb_priv->length) { modified = completed = 1; finish_urb(ohci, urb, 0); } @@ -1086,7 +1104,7 @@ static void takeback_td(struct ohci_hcd *ohci, struct td *td) urb_priv->td_cnt++; /* If all this urb's TDs are done, call complete() */ - if (urb_priv->td_cnt == urb_priv->length) + if (urb_priv->td_cnt >= urb_priv->length) finish_urb(ohci, urb, status); /* clean schedule: unlink EDs that are no longer busy */ From f875fdbf344b9fde207f66b392c40845dd7e5aa6 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 24 Sep 2013 15:45:25 -0400 Subject: [PATCH 249/523] USB: fix PM config symbol in uhci-hcd, ehci-hcd, and xhci-hcd Since uhci-hcd, ehci-hcd, and xhci-hcd support runtime PM, the .pm field in their pci_driver structures should be protected by CONFIG_PM rather than CONFIG_PM_SLEEP. The corresponding change has already been made for ohci-hcd. Without this change, controllers won't do runtime suspend if system suspend or hibernation isn't enabled. Signed-off-by: Alan Stern CC: Sarah Sharp CC: Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-pci.c | 2 +- drivers/usb/host/uhci-pci.c | 2 +- drivers/usb/host/xhci-pci.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index 6bd299e61f58..854c2ec7b699 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -361,7 +361,7 @@ static struct pci_driver ehci_pci_driver = { .remove = usb_hcd_pci_remove, .shutdown = usb_hcd_pci_shutdown, -#ifdef CONFIG_PM_SLEEP +#ifdef CONFIG_PM .driver = { .pm = &usb_hcd_pci_pm_ops }, diff --git a/drivers/usb/host/uhci-pci.c b/drivers/usb/host/uhci-pci.c index c300bd2f7d1c..0f228c46eeda 100644 --- a/drivers/usb/host/uhci-pci.c +++ b/drivers/usb/host/uhci-pci.c @@ -293,7 +293,7 @@ static struct pci_driver uhci_pci_driver = { .remove = usb_hcd_pci_remove, .shutdown = uhci_shutdown, -#ifdef CONFIG_PM_SLEEP +#ifdef CONFIG_PM .driver = { .pm = &usb_hcd_pci_pm_ops }, diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index c2d495057eb5..236c3aabe940 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -351,7 +351,7 @@ static struct pci_driver xhci_pci_driver = { /* suspend and resume implemented later */ .shutdown = usb_hcd_pci_shutdown, -#ifdef CONFIG_PM_SLEEP +#ifdef CONFIG_PM .driver = { .pm = &usb_hcd_pci_pm_ops }, From 7b0dd72a4401d999dac70377f5d423b8e6d44f4b Mon Sep 17 00:00:00 2001 From: Jean Pihet Date: Wed, 18 Sep 2013 20:55:09 +0200 Subject: [PATCH 250/523] arm: clocksource: mvebu: Use the main timer as clock source from DT This commit: 573145f08c2b92c45498468afbbba909f6ce6135 clocksource: armada-370-xp: Use CLOCKSOURCE_OF_DECLARE replaced a call to the driver's timer initialization by a call to clocksource_of_init(). However, it failed to select CONFIG_CLKSRC_OF. Fix this by selecting CONFIG_CLKSRC_OF for Armada370/XP machines. Without this change the kernel is stuck at: 'Calibrating delay loop...'. Signed-off-by: Jean Pihet Acked-by: Ezequiel Garcia Signed-off-by: Daniel Lezcano --- drivers/clocksource/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index 41c69469ce20..971d796e071d 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -26,6 +26,7 @@ config DW_APB_TIMER_OF config ARMADA_370_XP_TIMER bool + select CLKSRC_OF config ORION_TIMER select CLKSRC_OF From 5df718d84679936454e815451d748ccca0e9edad Mon Sep 17 00:00:00 2001 From: Tomasz Figa Date: Wed, 25 Sep 2013 12:00:59 +0200 Subject: [PATCH 251/523] clocksource: exynos_mct: Set IRQ affinity when the CPU goes online Some variants of Exynos MCT, namely exynos4210-mct at the moment, use normal, shared interrupts for local timers. This means that each interrupt must have correct affinity set to fire only on CPU corresponding to given local timer. However after recent conversion of clocksource drivers to not use the local timer API for local timer initialization any more, the point of time when local timers get initialized changed and irq_set_affinity() fails because the CPU is not marked as online yet. This patch fixes this by moving the call to irq_set_affinity() to CPU_ONLINE notification, so the affinity is being set when the CPU goes online. This fixes a regression introduced by commit ee98d27df6 ARM: EXYNOS4: Divorce mct from local timer API which rendered all Exynos4210 based boards unbootable due to failing irq_set_affinity() making local timers inoperatible. Signed-off-by: Tomasz Figa Signed-off-by: Kyungmin Park Acked-by: Stephen Boyd Signed-off-by: Daniel Lezcano --- drivers/clocksource/exynos_mct.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c index 5b34768f4d7c..62b0de6a1837 100644 --- a/drivers/clocksource/exynos_mct.c +++ b/drivers/clocksource/exynos_mct.c @@ -428,7 +428,6 @@ static int exynos4_local_timer_setup(struct clock_event_device *evt) evt->irq); return -EIO; } - irq_set_affinity(evt->irq, cpumask_of(cpu)); } else { enable_percpu_irq(mct_irqs[MCT_L0_IRQ], 0); } @@ -449,6 +448,7 @@ static int exynos4_mct_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu) { struct mct_clock_event_device *mevt; + unsigned int cpu; /* * Grab cpu pointer in each case to avoid spurious @@ -459,6 +459,12 @@ static int exynos4_mct_cpu_notify(struct notifier_block *self, mevt = this_cpu_ptr(&percpu_mct_tick); exynos4_local_timer_setup(&mevt->evt); break; + case CPU_ONLINE: + cpu = (unsigned long)hcpu; + if (mct_int_type == MCT_INT_SPI) + irq_set_affinity(mct_irqs[MCT_L0_IRQ + cpu], + cpumask_of(cpu)); + break; case CPU_DYING: mevt = this_cpu_ptr(&percpu_mct_tick); exynos4_local_timer_stop(&mevt->evt); @@ -500,6 +506,8 @@ static void __init exynos4_timer_resources(struct device_node *np, void __iomem &percpu_mct_tick); WARN(err, "MCT: can't request IRQ %d (%d)\n", mct_irqs[MCT_L0_IRQ], err); + } else { + irq_set_affinity(mct_irqs[MCT_L0_IRQ], cpumask_of(0)); } err = register_cpu_notifier(&exynos4_mct_cpu_nb); From eeb93d02c5d8819c74f6d4da08325cff8c6a9376 Mon Sep 17 00:00:00 2001 From: Sebastian Hesselbarth Date: Thu, 26 Sep 2013 02:08:17 +0200 Subject: [PATCH 252/523] clocksource: of: Respect device tree node status Clocksource devices provided by DT can be disabled (status != "okay"). Instead of registering clocksource drivers for disabled nodes, respect the device's status by skiping disabled nodes. Signed-off-by: Sebastian Hesselbarth Signed-off-by: Daniel Lezcano --- drivers/clocksource/clksrc-of.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/clocksource/clksrc-of.c b/drivers/clocksource/clksrc-of.c index 37f5325bec95..b9ddd9e3a2f5 100644 --- a/drivers/clocksource/clksrc-of.c +++ b/drivers/clocksource/clksrc-of.c @@ -30,6 +30,9 @@ void __init clocksource_of_init(void) clocksource_of_init_fn init_func; for_each_matching_node_and_match(np, __clksrc_of_table, &match) { + if (!of_device_is_available(np)) + continue; + init_func = match->data; init_func(np); } From f84839daa793f36ec7f8795d7510f0d61fa8875a Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 17 Sep 2013 12:37:20 +0800 Subject: [PATCH 253/523] usb: chipidea: udc: fix the oops after rmmod gadget When we rmmod gadget, the ci->driver needs to be cleared. Otherwise, when we plug in usb cable again, the driver will consider gadget is there, and go to enumeration procedure, but in fact, it was removed. ci_hdrc ci_hdrc.0: Connected to host Unable to handle kernel paging request at virtual address 7f02a42c pgd = 80004000 [7f02a42c] *pgd=3f13d811, *pte=00000000, *ppte=00000000 Internal error: Oops: 7 [#1] SMP ARM Modules linked in: usb_f_acm u_serial libcomposite configfs [last unloaded: g_serial] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.10.0+ #42 task: 807dba88 ti: 807d0000 task.ti: 807d0000 PC is at udc_irq+0x8fc/0xea4 LR is at l2x0_cache_sync+0x5c/0x6c pc : [<803de7f4>] lr : [<8001d0f0>] psr: 20000193 sp : 807d1d98 ip : 807d1d80 fp : 807d1df4 r10: af809900 r9 : 808184d4 r8 : 00080001 r7 : 00082001 r6 : afb711f8 r5 : afb71010 r4 : ffffffea r3 : 7f02a41c r2 : afb71010 r1 : 807d1dc0 r0 : afb71068 Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel Control: 10c53c7d Table: 3f01804a DAC: 00000017 Process swapper/0 (pid: 0, stack limit = 0x807d0238) Stack: (0x807d1d98 to 0x807d2000) 1d80: 00000000 afb71014 1da0: 000040f6 00000000 00000001 00000000 00007530 00000000 afb71010 001dcd65 1dc0: 01000680 00400000 807d1e2c afb71010 0000004e 00000000 00000000 0000004b 1de0: 808184d4 af809900 807d1e0c 807d1df8 803dbc24 803ddf04 afba75c0 0000004e 1e00: 807d1e44 807d1e10 8007a19c 803dbb9c 8108e7e0 8108e7e0 9ceddce0 af809900 1e20: 0000004e 807d0000 0000004b 00000000 00000010 00000000 807d1e5c 807d1e48 1e40: 8007a334 8007a154 af809900 0000004e 807d1e74 807d1e60 8007d3b4 8007a2f0 1e60: 0000004b 807cce3c 807d1e8c 807d1e78 80079b08 8007d300 00000180 807d8ba0 1e80: 807d1eb4 807d1e90 8000eef4 80079aec 00000000 f400010c 807d8ce4 807d1ed8 1ea0: f4000100 96d5c75d 807d1ed4 807d1eb8 80008600 8000eeac 8042699c 60000013 1ec0: ffffffff 807d1f0c 807d1f54 807d1ed8 8000e180 800085dc 807d1f20 00000046 1ee0: 9cedd275 00000010 8108f080 807de294 00000001 807de248 96d5c75d 00000010 1f00: 00000000 807d1f54 00000000 807d1f20 8005ff54 8042699c 60000013 ffffffff 1f20: 9cedd275 00000010 00000005 8108f080 8108f080 00000001 807de248 8086bd00 1f40: 807d0000 00000001 807d1f7c 807d1f58 80426af0 80426950 807d0000 00000000 1f60: 808184c0 808184c0 807d8954 805b886c 807d1f8c 807d1f80 8000f294 80426a44 1f80: 807d1fac 807d1f90 8005f110 8000f288 807d1fac 807d8908 805b4748 807dc86c 1fa0: 807d1fbc 807d1fb0 805aa58c 8005f068 807d1ff4 807d1fc0 8077c860 805aa530 1fc0: ffffffff ffffffff 8077c330 00000000 00000000 807bef88 00000000 10c53c7d 1fe0: 807d88d0 807bef84 00000000 807d1ff8 10008074 8077c594 00000000 00000000 Backtrace: [<803ddef8>] (udc_irq+0x0/0xea4) from [<803dbc24>] (ci_irq+0x94/0x14c) [<803dbb90>] (ci_irq+0x0/0x14c) from [<8007a19c>] (handle_irq_event_percpu+0x54/0x19c) r5:0000004e r4:afba75c0 [<8007a148>] (handle_irq_event_percpu+0x0/0x19c) from [<8007a334>] (handle_irq_event+0x50/0x70) [<8007a2e4>] (handle_irq_event+0x0/0x70) from [<8007d3b4>] (handle_fasteoi_irq+0xc0/0x16c) r5:0000004e r4:af809900 [<8007d2f4>] (handle_fasteoi_irq+0x0/0x16c) from [<80079b08>] (generic_handle_irq+0x28/0x38) r5:807cce3c r4:0000004b [<80079ae0>] (generic_handle_irq+0x0/0x38) from [<8000eef4>] (handle_IRQ+0x54/0xb4) r4:807d8ba0 r3:00000180 [<8000eea0>] (handle_IRQ+0x0/0xb4) from [<80008600>] (gic_handle_irq+0x30/0x64) r8:96d5c75d r7:f4000100 r6:807d1ed8 r5:807d8ce4 r4:f400010c r3:00000000 [<800085d0>] (gic_handle_irq+0x0/0x64) from [<8000e180>] (__irq_svc+0x40/0x54) Exception stack(0x807d1ed8 to 0x807d1f20) 1ec0: 807d1f20 00000046 1ee0: 9cedd275 00000010 8108f080 807de294 00000001 807de248 96d5c75d 00000010 1f00: 00000000 807d1f54 00000000 807d1f20 8005ff54 8042699c 60000013 ffffffff r7:807d1f0c r6:ffffffff r5:60000013 r4:8042699c [<80426944>] (cpuidle_enter_state+0x0/0xf4) from [<80426af0>] (cpuidle_idle_call+0xb8/0x174) r9:00000001 r8:807d0000 r7:8086bd00 r6:807de248 r5:00000001 r4:8108f080 [<80426a38>] (cpuidle_idle_call+0x0/0x174) from [<8000f294>] (arch_cpu_idle+0x18/0x5c) [<8000f27c>] (arch_cpu_idle+0x0/0x5c) from [<8005f110>] (cpu_startup_entry+0xb4/0x148) [<8005f05c>] (cpu_startup_entry+0x0/0x148) from [<805aa58c>] (rest_init+0x68/0x80) r7:807dc86c [<805aa524>] (rest_init+0x0/0x80) from [<8077c860>] (start_kernel+0x2d8/0x334) [<8077c588>] (start_kernel+0x0/0x334) from [<10008074>] (0x10008074) Code: e59031e0 e51b203c e24b1034 e2820058 (e5933010) ---[ end trace f874b2c5533c04bc ]--- Kernel panic - not syncing: Fatal exception in interrupt Tested-by: Marek Vasut Acked-by: Shawn Guo Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/udc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 6b4c2f2eb946..5280454fb2a7 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1667,13 +1667,13 @@ static int ci_udc_stop(struct usb_gadget *gadget, if (ci->platdata->notify_event) ci->platdata->notify_event(ci, CI_HDRC_CONTROLLER_STOPPED_EVENT); - ci->driver = NULL; spin_unlock_irqrestore(&ci->lock, flags); _gadget_stop_activity(&ci->gadget); spin_lock_irqsave(&ci->lock, flags); pm_runtime_put(&ci->gadget.dev); } + ci->driver = NULL; spin_unlock_irqrestore(&ci->lock, flags); return 0; From 222bed9b2dff53e4402d4819d6fca09e26b765fb Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 17 Sep 2013 12:37:21 +0800 Subject: [PATCH 254/523] usb: chipidea: Fix memleak for ci->hw_bank.regmap when removal It needs to free ci->hw_bank.regmap explicitly since it is not managed resource. Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 94626409559a..23763dcec069 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -605,6 +605,7 @@ static int ci_hdrc_remove(struct platform_device *pdev) dbg_remove_files(ci); free_irq(ci->irq, ci); ci_role_destroy(ci); + kfree(ci->hw_bank.regmap); return 0; } From 3a254fea70f402859b92a9cd4299ee5de3bbc2f6 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 17 Sep 2013 12:37:23 +0800 Subject: [PATCH 255/523] usb: chipidea: imx: Add usb_phy_shutdown at probe's error path If not, the PHY will be active even the controller is not in use. We find this issue due to the PHY's clock refcount is not correct due to -EPROBE_DEFER return after phy's init. Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci_hdrc_imx.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index 74d998d9b45b..be822a2c1776 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -131,7 +131,7 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) if (ret) { dev_err(&pdev->dev, "usbmisc init failed, ret=%d\n", ret); - goto err_clk; + goto err_phy; } } @@ -143,7 +143,7 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) dev_err(&pdev->dev, "Can't register ci_hdrc platform device, err=%d\n", ret); - goto err_clk; + goto err_phy; } if (data->usbmisc_data) { @@ -164,6 +164,9 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) disable_device: ci_hdrc_remove_device(data->ci_pdev); +err_phy: + if (data->phy) + usb_phy_shutdown(data->phy); err_clk: clk_disable_unprepare(data->clk); return ret; From e7ef5265b158ac1975b1556511e2b11bad5f5522 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 17 Sep 2013 12:37:24 +0800 Subject: [PATCH 256/523] usb: chipidea: udc: free pending TD at removal procedure There is a pending TD which is not freed after request finishes, we do this due to a controller bug. This TD needs to be freed when the driver is removed. It prints below error message when unload chipidea driver at current code: "ci_hdrc ci_hdrc.0: dma_pool_destroy ci_hw_td, b0001000 busy" It indicates the buffer at dma pool are still in use. This commit will free the pending TD at driver's removal procedure, it can fix the problem described above. Acked-by: Michael Grzeschik Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/udc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 5280454fb2a7..9333083dd111 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1600,6 +1600,8 @@ static void destroy_eps(struct ci_hdrc *ci) for (i = 0; i < ci->hw_ep_max; i++) { struct ci_hw_ep *hwep = &ci->ci_hw_ep[i]; + if (hwep->pending_td) + free_pending_td(hwep); dma_pool_free(ci->qh_pool, hwep->qh.ptr, hwep->qh.dma); } } From 2c740336159d9785ae81e8f9d6ba1a6b922723c9 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 17 Sep 2013 12:37:25 +0800 Subject: [PATCH 257/523] usb: chipidea: USB_CHIPIDEA should depend on HAS_DMA If NO_DMA=y: drivers/built-in.o: In function `dma_set_coherent_mask': include/linux/dma-mapping.h:93: undefined reference to `dma_supported' Reviewed-and-tested-by: Peter Chen Signed-off-by: Geert Uytterhoeven Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig index 4a851e15e58c..77b47d82c9a6 100644 --- a/drivers/usb/chipidea/Kconfig +++ b/drivers/usb/chipidea/Kconfig @@ -1,6 +1,6 @@ config USB_CHIPIDEA tristate "ChipIdea Highspeed Dual Role Controller" - depends on (USB_EHCI_HCD && USB_GADGET) || (USB_EHCI_HCD && !USB_GADGET) || (!USB_EHCI_HCD && USB_GADGET) + depends on ((USB_EHCI_HCD && USB_GADGET) || (USB_EHCI_HCD && !USB_GADGET) || (!USB_EHCI_HCD && USB_GADGET)) && HAS_DMA help Say Y here if your system has a dual role high speed USB controller based on ChipIdea silicon IP. Currently, only the From 831abf76643555a99b80a3b54adfa7e4fa0a3259 Mon Sep 17 00:00:00 2001 From: Kurt Garloff Date: Tue, 24 Sep 2013 14:13:48 +0200 Subject: [PATCH 258/523] usb/core/devio.c: Don't reject control message to endpoint with wrong direction bit Trying to read data from the Pegasus Technologies NoteTaker (0e20:0101) [1] with the Windows App (EasyNote) works natively but fails when Windows is running under KVM (and the USB device handed to KVM). The reason is a USB control message usb 4-2.2: control urb: bRequestType=22 bRequest=09 wValue=0200 wIndex=0001 wLength=0008 This goes to endpoint address 0x01 (wIndex); however, endpoint address 0x01 does not exist. There is an endpoint 0x81 though (same number, but other direction); the app may have meant that endpoint instead. The kernel thus rejects the IO and thus we see the failure. Apparently, Linux is more strict here than Windows ... we can't change the Win app easily, so that's a problem. It seems that the Win app/driver is buggy here and the driver does not behave fully according to the USB HID class spec that it claims to belong to. The device seems to happily deal with that though (and seems to not really care about this value much). So the question is whether the Linux kernel should filter here. Rejecting has the risk that somewhat non-compliant userspace apps/ drivers (most likely in a virtual machine) are prevented from working. Not rejecting has the risk of confusing an overly sensitive device with such a transfer. Given the fact that Windows does not filter it makes this risk rather small though. The patch makes the kernel more tolerant: If the endpoint address in wIndex does not exist, but an endpoint with toggled direction bit does, it will let the transfer through. (It does NOT change the message.) With attached patch, the app in Windows in KVM works. usb 4-2.2: check_ctrlrecip: process 13073 (qemu-kvm) requesting ep 01 but needs 81 I suspect this will mostly affect apps in virtual environments; as on Linux the apps would have been adapted to the stricter handling of the kernel. I have done that for mine[2]. [1] http://www.pegatech.com/ [2] https://sourceforge.net/projects/notetakerpen/ Signed-off-by: Kurt Garloff Acked-by: Alan Stern Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/devio.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index 737e3c19967b..71dc5d768fa5 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -742,6 +742,22 @@ static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype, if ((index & ~USB_DIR_IN) == 0) return 0; ret = findintfep(ps->dev, index); + if (ret < 0) { + /* + * Some not fully compliant Win apps seem to get + * index wrong and have the endpoint number here + * rather than the endpoint address (with the + * correct direction). Win does let this through, + * so we'll not reject it here but leave it to + * the device to not break KVM. But we warn. + */ + ret = findintfep(ps->dev, index ^ 0x80); + if (ret >= 0) + dev_info(&ps->dev->dev, + "%s: process %i (%s) requesting ep %02x but needs %02x\n", + __func__, task_pid_nr(current), + current->comm, index, index ^ 0x80); + } if (ret >= 0) ret = checkintf(ps, ret); break; From 2199a5574b6d94b9ca26c6345356f45ec60fef8b Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Wed, 18 Sep 2013 15:01:16 -0500 Subject: [PATCH 259/523] clocksource: em_sti: Set cpu_possible_mask to fix SMP broadcast Update the STI driver by setting cpu_possible_mask to make EMEV2 SMP work as expected together with the ARM broadcast timer. This breakage was introduced by: f7db706 ARM: 7674/1: smp: Avoid dummy clockevent being preferred over real hardware clock-event Without this fix SMP operation is broken on EMEV2 since no broadcast timer interrupts trigger on the secondary CPU cores. Signed-off-by: Magnus Damm Tested-by: Simon Horman Reviewed-by: Stephen Boyd Signed-off-by: Simon Horman Signed-off-by: Daniel Lezcano --- drivers/clocksource/em_sti.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clocksource/em_sti.c b/drivers/clocksource/em_sti.c index b9c81b7c3a3b..3a5909c12d42 100644 --- a/drivers/clocksource/em_sti.c +++ b/drivers/clocksource/em_sti.c @@ -301,7 +301,7 @@ static void em_sti_register_clockevent(struct em_sti_priv *p) ced->name = dev_name(&p->pdev->dev); ced->features = CLOCK_EVT_FEAT_ONESHOT; ced->rating = 200; - ced->cpumask = cpumask_of(0); + ced->cpumask = cpu_possible_mask; ced->set_next_event = em_sti_clock_event_next; ced->set_mode = em_sti_clock_event_mode; From 5cec7bf699c61d14f0538345076480bb8c8ebfbb Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Wed, 25 Sep 2013 20:13:04 -0400 Subject: [PATCH 260/523] tty: Fix SIGTTOU not sent with tcflush() Commit 'e7f3880cd9b98c5bf9391ae7acdec82b75403776' tty: Fix recursive deadlock in tty_perform_flush() introduced a regression where tcflush() does not generate SIGTTOU for background process groups. Make sure ioctl(TCFLSH) calls tty_check_change() when invoked from the line discipline. Cc: stable@vger.kernel.org # v3.10+ Reported-by: Oleg Nesterov Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/tty_ioctl.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/tty/tty_ioctl.c b/drivers/tty/tty_ioctl.c index 03ba081c5772..6fd60fece6b4 100644 --- a/drivers/tty/tty_ioctl.c +++ b/drivers/tty/tty_ioctl.c @@ -1201,6 +1201,9 @@ int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file, } return 0; case TCFLSH: + retval = tty_check_change(tty); + if (retval) + return retval; return __tty_perform_flush(tty, arg); default: /* Try the mode commands */ From 4dc3231f818baf7415c67ee06c51ace0973ae736 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Wed, 25 Sep 2013 12:11:33 +0200 Subject: [PATCH 261/523] ARM: mach-integrator: Add stub for pci_v3_early_init() for !CONFIG_PCI This fixes a compile error where CONFIG_PCI is disabled: LD init/built-in.o arch/arm/mach-integrator/built-in.o: In function `ap_map_io': integrator_cp.c:(.init.text+0x570): undefined reference to `pci_v3_early_init' make[1]: *** [vmlinux] Error 1 make: *** [sub-make] Error 2 Cc: stable@vger.kernel.org Signed-off-by: Joerg Roedel Reviewed-by: Linus Walleij Signed-off-by: Olof Johansson --- arch/arm/mach-integrator/pci_v3.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm/mach-integrator/pci_v3.h b/arch/arm/mach-integrator/pci_v3.h index 755fd29fed4a..06a9e2e7d007 100644 --- a/arch/arm/mach-integrator/pci_v3.h +++ b/arch/arm/mach-integrator/pci_v3.h @@ -1,2 +1,9 @@ /* Simple oneliner include to the PCIv3 early init */ +#ifdef CONFIG_PCI extern int pci_v3_early_init(void); +#else +static inline int pci_v3_early_init(void) +{ + return 0; +} +#endif From b26d19e44adfd10b691bf4ffd50ed411c1be9317 Mon Sep 17 00:00:00 2001 From: Liam Girdwood Date: Fri, 13 Sep 2013 17:43:16 +0100 Subject: [PATCH 262/523] ALSA: compress: Make sure we trigger STOP before closing the stream. Currently we assume that userspace will shut down the compressed stream correctly. However, if userspcae dies (e.g. cplay & ctrl-C) we dont stop the stream before freeing it. This now checks that the stream is stopped before freeing. Signed-off-by: Liam Girdwood Signed-off-by: Takashi Iwai --- sound/core/compress_offload.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c index 5863ba6dd12b..bea523a5d852 100644 --- a/sound/core/compress_offload.c +++ b/sound/core/compress_offload.c @@ -139,6 +139,18 @@ static int snd_compr_open(struct inode *inode, struct file *f) static int snd_compr_free(struct inode *inode, struct file *f) { struct snd_compr_file *data = f->private_data; + struct snd_compr_runtime *runtime = data->stream.runtime; + + switch (runtime->state) { + case SNDRV_PCM_STATE_RUNNING: + case SNDRV_PCM_STATE_DRAINING: + case SNDRV_PCM_STATE_PAUSED: + data->stream.ops->trigger(&data->stream, SNDRV_PCM_TRIGGER_STOP); + break; + default: + break; + } + data->stream.ops->free(&data->stream); kfree(data->stream.runtime->buffer); kfree(data->stream.runtime); From f82d7d16aee5eb4c2315ba11a90f2f3c662d45b8 Mon Sep 17 00:00:00 2001 From: Mengdong Lin Date: Sat, 21 Sep 2013 20:34:45 -0400 Subject: [PATCH 263/523] ALSA : hda - not use assigned converters for all unused pins BIOS can mark a pin as "no physical connection" if the port is used by an integrated display which is not audio capable. And audio driver will overlook such pins. On Haswell, such a disconneted pin will keep muted and connected to the 1st converter by default. But if the 1st convertor is assigned to a connected pin for audio streaming. The muted disconnected pin can make the connected pin no sound output. So this patch avoids using assigned converters for all unused pins for Haswell, including the disconected pins. Signed-off-by: Mengdong Lin Reviewed-by: David Henningsson Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_hdmi.c | 49 +++++++++++++++++++++++--------------- 1 file changed, 30 insertions(+), 19 deletions(-) diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 3d8cd04455a6..7ea0245fc6bd 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1149,32 +1149,43 @@ static int hdmi_choose_cvt(struct hda_codec *codec, } static void haswell_config_cvts(struct hda_codec *codec, - int pin_id, int mux_id) + hda_nid_t pin_nid, int mux_idx) { struct hdmi_spec *spec = codec->spec; - struct hdmi_spec_per_pin *per_pin; - int pin_idx, mux_idx; - int curr; - int err; + hda_nid_t nid, end_nid; + int cvt_idx, curr; + struct hdmi_spec_per_cvt *per_cvt; - for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) { - per_pin = get_pin(spec, pin_idx); + /* configure all pins, including "no physical connection" ones */ + end_nid = codec->start_nid + codec->num_nodes; + for (nid = codec->start_nid; nid < end_nid; nid++) { + unsigned int wid_caps = get_wcaps(codec, nid); + unsigned int wid_type = get_wcaps_type(wid_caps); - if (pin_idx == pin_id) + if (wid_type != AC_WID_PIN) continue; - curr = snd_hda_codec_read(codec, per_pin->pin_nid, 0, - AC_VERB_GET_CONNECT_SEL, 0); + if (nid == pin_nid) + continue; - /* Choose another unused converter */ - if (curr == mux_id) { - err = hdmi_choose_cvt(codec, pin_idx, NULL, &mux_idx); - if (err < 0) - return; - snd_printdd("HDMI: choose converter %d for pin %d\n", mux_idx, pin_idx); - snd_hda_codec_write_cache(codec, per_pin->pin_nid, 0, + curr = snd_hda_codec_read(codec, nid, 0, + AC_VERB_GET_CONNECT_SEL, 0); + if (curr != mux_idx) + continue; + + /* choose an unassigned converter. The conveters in the + * connection list are in the same order as in the codec. + */ + for (cvt_idx = 0; cvt_idx < spec->num_cvts; cvt_idx++) { + per_cvt = get_cvt(spec, cvt_idx); + if (!per_cvt->assigned) { + snd_printdd("choose cvt %d for pin nid %d\n", + cvt_idx, nid); + snd_hda_codec_write_cache(codec, nid, 0, AC_VERB_SET_CONNECT_SEL, - mux_idx); + cvt_idx); + break; + } } } } @@ -1216,7 +1227,7 @@ static int hdmi_pcm_open(struct hda_pcm_stream *hinfo, /* configure unused pins to choose other converters */ if (is_haswell(codec)) - haswell_config_cvts(codec, pin_idx, mux_idx); + haswell_config_cvts(codec, per_pin->pin_nid, mux_idx); snd_hda_spdif_ctls_assign(codec, pin_idx, per_cvt->cvt_nid); From 633358e9ff19145fde81903a8310ecc252dc8bca Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 25 Sep 2013 12:31:01 +0100 Subject: [PATCH 264/523] OMAPDSS: Add missing dependency on backlight for DSI-CM panel drier The DSI-CM driver uses the backlight class so needs to build depend on it. Signed-off-by: Mark Brown Reviewed-by: Jingoo Han Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/displays-new/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/video/omap2/displays-new/Kconfig b/drivers/video/omap2/displays-new/Kconfig index 6c90885b0940..10b25e7cd878 100644 --- a/drivers/video/omap2/displays-new/Kconfig +++ b/drivers/video/omap2/displays-new/Kconfig @@ -35,6 +35,7 @@ config DISPLAY_PANEL_DPI config DISPLAY_PANEL_DSI_CM tristate "Generic DSI Command Mode Panel" + depends on BACKLIGHT_CLASS_DEVICE help Driver for generic DSI command mode panels. From fb8a15079a579f4cd0e01c9d37e868f5c2b4994c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 23 Sep 2013 18:13:10 +0200 Subject: [PATCH 265/523] video: mmp: drop needless devm cleanup MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The nice thing about devm_* is that the driver doesn't need to free the resources but the driver core takes care about that. This also simplifies the error path quite a bit and removes the wrong check for a clock pointer being NULL. Russell King - ARM Linux : "And this patch also fixes the above: disabling/unpreparing _after_ putting the thing - which was quite silly... :)" Signed-off-by: Uwe Kleine-König Signed-off-by: Tomi Valkeinen --- drivers/video/mmp/hw/mmp_ctrl.c | 17 ++--------------- 1 file changed, 2 insertions(+), 15 deletions(-) diff --git a/drivers/video/mmp/hw/mmp_ctrl.c b/drivers/video/mmp/hw/mmp_ctrl.c index 75dca19bf214..6ac755270ab4 100644 --- a/drivers/video/mmp/hw/mmp_ctrl.c +++ b/drivers/video/mmp/hw/mmp_ctrl.c @@ -514,7 +514,7 @@ static int mmphw_probe(struct platform_device *pdev) if (IS_ERR(ctrl->clk)) { dev_err(ctrl->dev, "unable to get clk %s\n", mi->clk_name); ret = -ENOENT; - goto failed_get_clk; + goto failed; } clk_prepare_enable(ctrl->clk); @@ -551,21 +551,8 @@ failed_path_init: path_deinit(path_plat); } - if (ctrl->clk) { - devm_clk_put(ctrl->dev, ctrl->clk); - clk_disable_unprepare(ctrl->clk); - } -failed_get_clk: - devm_free_irq(ctrl->dev, ctrl->irq, ctrl); + clk_disable_unprepare(ctrl->clk); failed: - if (ctrl) { - if (ctrl->reg_base) - devm_iounmap(ctrl->dev, ctrl->reg_base); - devm_release_mem_region(ctrl->dev, res->start, - resource_size(res)); - devm_kfree(ctrl->dev, ctrl); - } - dev_err(&pdev->dev, "device init failed\n"); return ret; From a2a6fc5f182fdb179a4f5262ee77c2c2684fe0cd Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Mon, 23 Sep 2013 23:00:15 +0800 Subject: [PATCH 266/523] s3fb: fix error return code in s3_pci_probe() Fix to return -EINVAL when virtual vertical size smaller than real instead of 0, as done elsewhere in this function. Also remove dup code. Signed-off-by: Wei Yongjun Signed-off-by: Tomi Valkeinen --- drivers/video/s3fb.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/drivers/video/s3fb.c b/drivers/video/s3fb.c index 47ca86c5c6c0..d838ba829459 100644 --- a/drivers/video/s3fb.c +++ b/drivers/video/s3fb.c @@ -1336,14 +1336,7 @@ static int s3_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) (info->var.bits_per_pixel * info->var.xres_virtual); if (info->var.yres_virtual < info->var.yres) { dev_err(info->device, "virtual vertical size smaller than real\n"); - goto err_find_mode; - } - - /* maximize virtual vertical size for fast scrolling */ - info->var.yres_virtual = info->fix.smem_len * 8 / - (info->var.bits_per_pixel * info->var.xres_virtual); - if (info->var.yres_virtual < info->var.yres) { - dev_err(info->device, "virtual vertical size smaller than real\n"); + rc = -EINVAL; goto err_find_mode; } From 8c42cf75490a90f6016a027765a4f053d7ba2f37 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Mon, 23 Sep 2013 23:00:34 +0800 Subject: [PATCH 267/523] neofb: fix error return code in neofb_probe() Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun Signed-off-by: Tomi Valkeinen --- drivers/video/neofb.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/video/neofb.c b/drivers/video/neofb.c index 7ef079c146e7..c172a5281f9e 100644 --- a/drivers/video/neofb.c +++ b/drivers/video/neofb.c @@ -2075,6 +2075,7 @@ static int neofb_probe(struct pci_dev *dev, const struct pci_device_id *id) if (!fb_find_mode(&info->var, info, mode_option, NULL, 0, info->monspecs.modedb, 16)) { printk(KERN_ERR "neofb: Unable to find usable video mode.\n"); + err = -EINVAL; goto err_map_video; } @@ -2097,7 +2098,8 @@ static int neofb_probe(struct pci_dev *dev, const struct pci_device_id *id) info->fix.smem_len >> 10, info->var.xres, info->var.yres, h_sync / 1000, h_sync % 1000, v_sync); - if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) + err = fb_alloc_cmap(&info->cmap, 256, 0); + if (err < 0) goto err_map_video; err = register_framebuffer(info); From 60119a1d686702504fa4cbe666cbcb96744b175c Mon Sep 17 00:00:00 2001 From: Andrzej Hajda Date: Wed, 25 Sep 2013 13:51:31 +0200 Subject: [PATCH 268/523] video: of: display_timing: correct display-timings node finding of_get_display_timing(s) use of_find_node_by_name to get child node, this is incorrect, of_get_child_by_name should be used instead. The patch fixes it. Small typo is also corrected. Signed-off-by: Andrzej Hajda Signed-off-by: Kyungmin Park Signed-off-by: Tomi Valkeinen --- drivers/video/of_display_timing.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/video/of_display_timing.c b/drivers/video/of_display_timing.c index 171821ddd78d..ba5b40f581f6 100644 --- a/drivers/video/of_display_timing.c +++ b/drivers/video/of_display_timing.c @@ -120,7 +120,7 @@ int of_get_display_timing(struct device_node *np, const char *name, return -EINVAL; } - timing_np = of_find_node_by_name(np, name); + timing_np = of_get_child_by_name(np, name); if (!timing_np) { pr_err("%s: could not find node '%s'\n", of_node_full_name(np), name); @@ -143,11 +143,11 @@ struct display_timings *of_get_display_timings(struct device_node *np) struct display_timings *disp; if (!np) { - pr_err("%s: no devicenode given\n", of_node_full_name(np)); + pr_err("%s: no device node given\n", of_node_full_name(np)); return NULL; } - timings_np = of_find_node_by_name(np, "display-timings"); + timings_np = of_get_child_by_name(np, "display-timings"); if (!timings_np) { pr_err("%s: could not find display-timings node\n", of_node_full_name(np)); From 5f4513864304672e6ea9eac60583eeac32e679f2 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Thu, 26 Sep 2013 08:33:16 +0200 Subject: [PATCH 269/523] hwmon: (applesmc) Check key count before proceeding After reports from Chris and Josh Boyer of a rare crash in applesmc, Guenter pointed at the initialization problem fixed below. The patch has not been verified to fix the crash, but should be applied regardless. Reported-by: Suggested-by: Guenter Roeck Signed-off-by: Henrik Rydberg Cc: stable@vger.kernel.org Signed-off-by: Guenter Roeck --- drivers/hwmon/applesmc.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c index 62c2e32e25ef..98814d12a604 100644 --- a/drivers/hwmon/applesmc.c +++ b/drivers/hwmon/applesmc.c @@ -525,16 +525,25 @@ static int applesmc_init_smcreg_try(void) { struct applesmc_registers *s = &smcreg; bool left_light_sensor, right_light_sensor; + unsigned int count; u8 tmp[1]; int ret; if (s->init_complete) return 0; - ret = read_register_count(&s->key_count); + ret = read_register_count(&count); if (ret) return ret; + if (s->cache && s->key_count != count) { + pr_warn("key count changed from %d to %d\n", + s->key_count, count); + kfree(s->cache); + s->cache = NULL; + } + s->key_count = count; + if (!s->cache) s->cache = kcalloc(s->key_count, sizeof(*s->cache), GFP_KERNEL); if (!s->cache) From a8b22c1ccccd2a5368f803afab41b4301832ff10 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Wed, 25 Sep 2013 15:21:08 +0200 Subject: [PATCH 270/523] ASoC: imx-sgtl5000: do not use devres on a foreign device Calling devm_clk_get with any device pointer other than our own confuses devres. Use clk_get instead. This avoids hitting the following warning in the imx-sgtl5000 error path: imx-sgtl5000 sound.12: snd_soc_register_card failed (-517) platform sound.12: Driver imx-sgtl5000 requests probe deferral ------------[ cut here ]------------ WARNING: CPU: 0 PID: 75 at drivers/base/dd.c:272 driver_probe_device+0x194/0x218() Modules linked in: snd_soc_sgtl5000(+) snd_soc_imx_sgtl5000 coda snd_soc_imx_audmux imx_sdma snd_soc_fsl_spdif snd_soc_fsl_ssi CPU: 0 PID: 75 Comm: udevd Not tainted 3.11.0-rc6+ #4682 Backtrace: [<80010bc4>] (dump_backtrace+0x0/0x10c) from [<80010d60>] (show_stack+0x18/0x1c) r6:00000110 r5:00000009 r4:00000000 r3:00000000 [<80010d48>] (show_stack+0x0/0x1c) from [<804f0764>] (dump_stack+0x20/0x28) [<804f0744>] (dump_stack+0x0/0x28) from [<8001a4a4>] (warn_slowpath_common+0x6c/0x8c) [<8001a438>] (warn_slowpath_common+0x0/0x8c) from [<8001a4e8>] (warn_slowpath_null+0x24/0x2c) r8:7f032000 r7:7f02f93c r6:cf8eaa54 r5:cf8eaa20 r4:80728a0c [<8001a4c4>] (warn_slowpath_null+0x0/0x2c) from [<80286bdc>] (driver_probe_device+0x194/0x218) [<80286a48>] (driver_probe_device+0x0/0x218) from [<80286cf4>] (__driver_attach+0x94/0x98) r7:00000000 r6:cf8eaa54 r5:7f02f93c r4:cf8eaa20 [<80286c60>] (__driver_attach+0x0/0x98) from [<802851c8>] (bus_for_each_dev+0x5c/0x90) r6:80286c60 r5:7f02f93c r4:00000000 r3:cf8ef03c [<8028516c>] (bus_for_each_dev+0x0/0x90) from [<80286654>] (driver_attach+0x24/0x28) r6:806d0424 r5:cf16a580 r4:7f02f93c [<80286630>] (driver_attach+0x0/0x28) from [<802861e4>] (bus_add_driver+0xdc/0x234) [<80286108>] (bus_add_driver+0x0/0x234) from [<802871d4>] (driver_register+0x80/0x154) r8:7f032000 r7:00000001 r6:7f02fa68 r5:7f02fa74 r4:7f02f93c [<80287154>] (driver_register+0x0/0x154) from [<8033c278>] (i2c_register_driver+0x34/0xbc) [<8033c244>] (i2c_register_driver+0x0/0xbc) from [<7f032018>] (sgtl5000_i2c_driver_init+0x18/0x24 [snd_soc_sgtl5000]) r5:7f02fa74 r4:cfb7ff48 [<7f032000>] (sgtl5000_i2c_driver_init+0x0/0x24 [snd_soc_sgtl5000]) from [<80008738>] (do_one_initcall+0xf4/0x150) [<80008644>] (do_one_initcall+0x0/0x150) from [<80053f64>] (load_module+0x174c/0x1db4) [<80052818>] (load_module+0x0/0x1db4) from [<800546ac>] (SyS_init_module+0xe0/0xf4) [<800545cc>] (SyS_init_module+0x0/0xf4) from [<8000e540>] (ret_fast_syscall+0x0/0x30) r6:00005b22 r5:00afed68 r4:00000000 ---[ end trace b24c5c3bb145dbdd ]--- Signed-off-by: Philipp Zabel Acked-by: Shawn Guo Reviewed-by: Fabio Estevam Signed-off-by: Mark Brown --- sound/soc/fsl/imx-sgtl5000.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/sound/soc/fsl/imx-sgtl5000.c b/sound/soc/fsl/imx-sgtl5000.c index 46c5b4fdfc52..52df7d5eaf9e 100644 --- a/sound/soc/fsl/imx-sgtl5000.c +++ b/sound/soc/fsl/imx-sgtl5000.c @@ -128,7 +128,7 @@ static int imx_sgtl5000_probe(struct platform_device *pdev) goto fail; } - data->codec_clk = devm_clk_get(&codec_dev->dev, NULL); + data->codec_clk = clk_get(&codec_dev->dev, NULL); if (IS_ERR(data->codec_clk)) { ret = PTR_ERR(data->codec_clk); goto fail; @@ -172,6 +172,8 @@ static int imx_sgtl5000_probe(struct platform_device *pdev) return 0; fail: + if (!IS_ERR(data->codec_clk)) + clk_put(data->codec_clk); if (ssi_np) of_node_put(ssi_np); if (codec_np) @@ -185,6 +187,7 @@ static int imx_sgtl5000_remove(struct platform_device *pdev) struct imx_sgtl5000_data *data = platform_get_drvdata(pdev); snd_soc_unregister_card(&data->card); + clk_put(data->codec_clk); return 0; } From 50d4a790e65f5ac91a7b2720a19e80e862b40318 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Wed, 25 Sep 2013 15:22:01 +0200 Subject: [PATCH 271/523] ASoC: imx-sgtl5000: Fix uninitialized pointer use in error path This patch avoids to dereference the uninitialized data pointer if the error path is entered before devm_kzalloc is called (or if the allocation fails). It fixes the following warning: sound/soc/fsl/imx-sgtl5000.c: In function 'imx_sgtl5000_probe': sound/soc/fsl/imx-sgtl5000.c:175:18: warning: 'data' may be used uninitialized in this function [-Wmaybe-uninitialized] Signed-off-by: Philipp Zabel Signed-off-by: Mark Brown --- sound/soc/fsl/imx-sgtl5000.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/fsl/imx-sgtl5000.c b/sound/soc/fsl/imx-sgtl5000.c index 52df7d5eaf9e..ca1be1d9dcf0 100644 --- a/sound/soc/fsl/imx-sgtl5000.c +++ b/sound/soc/fsl/imx-sgtl5000.c @@ -62,7 +62,7 @@ static int imx_sgtl5000_probe(struct platform_device *pdev) struct device_node *ssi_np, *codec_np; struct platform_device *ssi_pdev; struct i2c_client *codec_dev; - struct imx_sgtl5000_data *data; + struct imx_sgtl5000_data *data = NULL; int int_port, ext_port; int ret; @@ -172,7 +172,7 @@ static int imx_sgtl5000_probe(struct platform_device *pdev) return 0; fail: - if (!IS_ERR(data->codec_clk)) + if (data && !IS_ERR(data->codec_clk)) clk_put(data->codec_clk); if (ssi_np) of_node_put(ssi_np); From 6d0bb818041a02be682abadb3ba35ff608f7d60a Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Thu, 26 Sep 2013 13:13:58 +0200 Subject: [PATCH 272/523] video: mxsfb: Add missing break Add missing break into the restore function. Signed-off-by: Marek Vasut Cc: Fabio Estevam Cc: Shawn Guo Cc: Tomi Valkeinen Signed-off-by: Tomi Valkeinen --- drivers/video/mxsfb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/video/mxsfb.c b/drivers/video/mxsfb.c index d250ed0f806d..27197a8048c0 100644 --- a/drivers/video/mxsfb.c +++ b/drivers/video/mxsfb.c @@ -620,6 +620,7 @@ static int mxsfb_restore_mode(struct mxsfb_info *host) break; case 3: bits_per_pixel = 32; + break; case 1: default: return -EINVAL; From 5bc2afc2b53fc73f154e6344cd898585628e6d27 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 23 Sep 2013 18:01:28 -0400 Subject: [PATCH 273/523] NFSv4: Honour the 'opened' parameter in the atomic_open() filesystem method Determine if we've created a new file by examining the directory change attribute and/or the O_EXCL flag. This fixes a regression when doing a non-exclusive create of a new file. If the FILE_CREATED flag is not set, the atomic_open() command will perform full file access permissions checks instead of just checking for MAY_OPEN. Signed-off-by: Trond Myklebust --- fs/nfs/dir.c | 2 +- fs/nfs/nfs4file.c | 3 ++- fs/nfs/nfs4proc.c | 26 +++++++++++++++++++------- include/linux/nfs_xdr.h | 3 ++- 4 files changed, 24 insertions(+), 10 deletions(-) diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 854a8f05a610..02b0df769e2d 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1458,7 +1458,7 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry, trace_nfs_atomic_open_enter(dir, ctx, open_flags); nfs_block_sillyrename(dentry->d_parent); - inode = NFS_PROTO(dir)->open_context(dir, ctx, open_flags, &attr); + inode = NFS_PROTO(dir)->open_context(dir, ctx, open_flags, &attr, opened); nfs_unblock_sillyrename(dentry->d_parent); if (IS_ERR(inode)) { err = PTR_ERR(inode); diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c index e5b804dd944c..77efaf15ec90 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -19,6 +19,7 @@ nfs4_file_open(struct inode *inode, struct file *filp) struct inode *dir; unsigned openflags = filp->f_flags; struct iattr attr; + int opened = 0; int err; /* @@ -55,7 +56,7 @@ nfs4_file_open(struct inode *inode, struct file *filp) nfs_wb_all(inode); } - inode = NFS_PROTO(dir)->open_context(dir, ctx, openflags, &attr); + inode = NFS_PROTO(dir)->open_context(dir, ctx, openflags, &attr, &opened); if (IS_ERR(inode)) { err = PTR_ERR(inode); switch (err) { diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 989bb9d3074d..488ef9b5c51a 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -912,6 +912,7 @@ struct nfs4_opendata { struct iattr attrs; unsigned long timestamp; unsigned int rpc_done : 1; + unsigned int file_created : 1; unsigned int is_recover : 1; int rpc_status; int cancelled; @@ -1946,8 +1947,13 @@ static int _nfs4_proc_open(struct nfs4_opendata *data) nfs_fattr_map_and_free_names(server, &data->f_attr); - if (o_arg->open_flags & O_CREAT) + if (o_arg->open_flags & O_CREAT) { update_changeattr(dir, &o_res->cinfo); + if (o_arg->open_flags & O_EXCL) + data->file_created = 1; + else if (o_res->cinfo.before != o_res->cinfo.after) + data->file_created = 1; + } if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) server->caps &= ~NFS_CAP_POSIX_LOCK; if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { @@ -2191,7 +2197,8 @@ static int _nfs4_do_open(struct inode *dir, struct nfs_open_context *ctx, int flags, struct iattr *sattr, - struct nfs4_label *label) + struct nfs4_label *label, + int *opened) { struct nfs4_state_owner *sp; struct nfs4_state *state = NULL; @@ -2261,6 +2268,8 @@ static int _nfs4_do_open(struct inode *dir, nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); } } + if (opendata->file_created) + *opened |= FILE_CREATED; if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) *ctx_th = opendata->f_attr.mdsthreshold; @@ -2289,7 +2298,8 @@ static struct nfs4_state *nfs4_do_open(struct inode *dir, struct nfs_open_context *ctx, int flags, struct iattr *sattr, - struct nfs4_label *label) + struct nfs4_label *label, + int *opened) { struct nfs_server *server = NFS_SERVER(dir); struct nfs4_exception exception = { }; @@ -2297,7 +2307,7 @@ static struct nfs4_state *nfs4_do_open(struct inode *dir, int status; do { - status = _nfs4_do_open(dir, ctx, flags, sattr, label); + status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened); res = ctx->state; trace_nfs4_open_file(ctx, flags, status); if (status == 0) @@ -2659,7 +2669,8 @@ out: } static struct inode * -nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) +nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, + int open_flags, struct iattr *attr, int *opened) { struct nfs4_state *state; struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; @@ -2667,7 +2678,7 @@ nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); /* Protect against concurrent sillydeletes */ - state = nfs4_do_open(dir, ctx, open_flags, attr, label); + state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); nfs4_label_release_security(label); @@ -3332,6 +3343,7 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, struct nfs4_label l, *ilabel = NULL; struct nfs_open_context *ctx; struct nfs4_state *state; + int opened = 0; int status = 0; ctx = alloc_nfs_open_context(dentry, FMODE_READ); @@ -3341,7 +3353,7 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); sattr->ia_mode &= ~current_umask(); - state = nfs4_do_open(dir, ctx, flags, sattr, ilabel); + state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, &opened); if (IS_ERR(state)) { status = PTR_ERR(state); goto out; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 01fd84b566f7..49f52c8f4422 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1455,7 +1455,8 @@ struct nfs_rpc_ops { struct inode * (*open_context) (struct inode *dir, struct nfs_open_context *ctx, int open_flags, - struct iattr *iattr); + struct iattr *iattr, + int *); int (*have_delegation)(struct inode *, fmode_t); int (*return_delegation)(struct inode *); struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *); From 997def25e4b9cee3b01609e18a52f926bca8bd2b Mon Sep 17 00:00:00 2001 From: Mark Tinguely Date: Mon, 23 Sep 2013 12:18:58 -0500 Subject: [PATCH 274/523] xfs: fix node forward in xfs_node_toosmall Commit f5ea1100 cleans up the disk to host conversions for node directory entries, but because a variable is reused in xfs_node_toosmall() the next node is not correctly found. If the original node is small enough (<= 3/8 of the node size), this change may incorrectly cause a node collapse when it should not. That will cause an assert in xfstest generic/319: Assertion failed: first <= last && last < BBTOB(bp->b_length), file: /root/newest/xfs/fs/xfs/xfs_trans_buf.c, line: 569 Keep the original node header to get the correct forward node. (When a node is considered for a merge with a sibling, it overwrites the sibling pointers of the original incore nodehdr with the sibling's pointers. This leads to loop considering the original node as a merge candidate with itself in the second pass, and so it incorrectly determines a merge should occur.) Signed-off-by: Mark Tinguely Reviewed-by: Ben Myers Signed-off-by: Ben Myers [v3: added Dave Chinner's (slightly modified) suggestion to the commit header, cleaned up whitespace. -bpm] --- fs/xfs/xfs_da_btree.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c index 069537c845e5..20bf8e8002d6 100644 --- a/fs/xfs/xfs_da_btree.c +++ b/fs/xfs/xfs_da_btree.c @@ -1224,6 +1224,7 @@ xfs_da3_node_toosmall( /* start with smaller blk num */ forward = nodehdr.forw < nodehdr.back; for (i = 0; i < 2; forward = !forward, i++) { + struct xfs_da3_icnode_hdr thdr; if (forward) blkno = nodehdr.forw; else @@ -1236,10 +1237,10 @@ xfs_da3_node_toosmall( return(error); node = bp->b_addr; - xfs_da3_node_hdr_from_disk(&nodehdr, node); + xfs_da3_node_hdr_from_disk(&thdr, node); xfs_trans_brelse(state->args->trans, bp); - if (count - nodehdr.count >= 0) + if (count - thdr.count >= 0) break; /* fits with at least 25% to spare */ } if (i >= 2) { From 86c7d8d4168ce85cb9d880b247f941786ba0724b Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sat, 14 Sep 2013 15:46:33 +0200 Subject: [PATCH 275/523] ath9k: fix stale flag handling on buffer clone Fixes a regression from commit "ath9k: shrink a few data structures by reordering fields" When cloning a buffer, the stale flag (part of bf_state now) needs to be reset after copying the state to prevent tx processing hangs. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/xmit.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 35b515fe3ffa..a749e0f5ab54 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -399,6 +399,7 @@ static struct ath_buf* ath_clone_txbuf(struct ath_softc *sc, struct ath_buf *bf) tbf->bf_buf_addr = bf->bf_buf_addr; memcpy(tbf->bf_desc, bf->bf_desc, sc->sc_ah->caps.tx_desc_len); tbf->bf_state = bf->bf_state; + tbf->bf_state.stale = false; return tbf; } From 440c1c874a8e40a13fc2c799e05c469e1d67e9be Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sat, 14 Sep 2013 17:02:29 +0200 Subject: [PATCH 276/523] ath9k: do not link bf_next across multiple A-MPDUs This might trip up tx completion processing, although the condition that triggers this should not (yet) occur in practice. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/xmit.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index a749e0f5ab54..58499603f705 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -1951,7 +1951,9 @@ static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq, if (bf_is_ampdu_not_probing(bf)) txq->axq_ampdu_depth++; - bf = bf->bf_lastbf->bf_next; + bf_last = bf->bf_lastbf; + bf = bf_last->bf_next; + bf_last->bf_next = NULL; } } } From d29a5fd888918c35eb74496637d448ac37866c6e Mon Sep 17 00:00:00 2001 From: Sujith Manoharan Date: Mon, 16 Sep 2013 10:24:51 +0530 Subject: [PATCH 277/523] ath9k: Fix regression in LNA diversity The commit "ath9k: Optimize LNA check" tried to use the "rs_firstaggr" flag to optimize the LNA combining algorithm when processing subframes in an A-MPDU. This doesn't appear to work well in practice, so revert it and use the old method of relying on "rs_moreaggr". Cc: stable@vger.kernel.org # 3.11 Signed-off-by: Sujith Manoharan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/recv.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c index 4ee472a5a4e4..ab9e3a8410bc 100644 --- a/drivers/net/wireless/ath/ath9k/recv.c +++ b/drivers/net/wireless/ath/ath9k/recv.c @@ -1269,13 +1269,6 @@ static void ath9k_antenna_check(struct ath_softc *sc, if (!(ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)) return; - /* - * All MPDUs in an aggregate will use the same LNA - * as the first MPDU. - */ - if (rs->rs_isaggr && !rs->rs_firstaggr) - return; - /* * Change the default rx antenna if rx diversity * chooses the other antenna 3 times in a row. From 20e6e55aaaa6745fbc815845e2e5e20dc35d62e5 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Tue, 17 Sep 2013 12:05:15 +0200 Subject: [PATCH 278/523] ath9k: don't use BAW tracking on PS responses for non-AMPDU packets When .release_buffered_frames was implemented, only A-MPDU packets were buffered internally. Now that this has changed, the BUF_AMPDU flag needs to be checked before calling ath_tx_addto_baw Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/xmit.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 58499603f705..9b3736ea2aaf 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -1556,8 +1556,10 @@ void ath9k_release_buffered_frames(struct ieee80211_hw *hw, __skb_unlink(bf->bf_mpdu, tid_q); list_add_tail(&bf->list, &bf_q); ath_set_rates(tid->an->vif, tid->an->sta, bf); - ath_tx_addto_baw(sc, tid, bf); - bf->bf_state.bf_type &= ~BUF_AGGR; + if (bf_isampdu(bf)) { + ath_tx_addto_baw(sc, tid, bf); + bf->bf_state.bf_type &= ~BUF_AGGR; + } if (bf_tail) bf_tail->bf_next = bf; From e78641c19de7a3b77b5d840aff239c6648983099 Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Wed, 18 Sep 2013 00:57:59 +0400 Subject: [PATCH 279/523] p54usb: fix leak at failure path in p54u_load_firmware() If request_firmware_nowait() fails in p54u_load_firmware(), p54u_load_firmware_cb is not called and no one decrements usb_dev refcnt. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Signed-off-by: John W. Linville --- drivers/net/wireless/p54/p54usb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/p54/p54usb.c b/drivers/net/wireless/p54/p54usb.c index b9deef66cf4b..7fa81d13b4e5 100644 --- a/drivers/net/wireless/p54/p54usb.c +++ b/drivers/net/wireless/p54/p54usb.c @@ -979,6 +979,7 @@ static int p54u_load_firmware(struct ieee80211_hw *dev, if (err) { dev_err(&priv->udev->dev, "(p54usb) cannot load firmware %s " "(%d)!\n", p54u_fwlist[i].fw, err); + usb_put_dev(udev); } return err; From 919123d246adf3e69320900842015368c2384d0f Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Wed, 18 Sep 2013 15:23:41 +0200 Subject: [PATCH 280/523] ath9k: add txq locking for ath_tx_aggr_start Prevents race conditions when un-aggregated frames are pending in the driver. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/xmit.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 9b3736ea2aaf..5ac713d2ff5d 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -1390,11 +1390,15 @@ int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid, u16 *ssn) { struct ath_atx_tid *txtid; + struct ath_txq *txq; struct ath_node *an; u8 density; an = (struct ath_node *)sta->drv_priv; txtid = ATH_AN_2_TID(an, tid); + txq = txtid->ac->txq; + + ath_txq_lock(sc, txq); /* update ampdu factor/density, they may have changed. This may happen * in HT IBSS when a beacon with HT-info is received after the station @@ -1418,6 +1422,8 @@ int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, memset(txtid->tx_buf, 0, sizeof(txtid->tx_buf)); txtid->baw_head = txtid->baw_tail = 0; + ath_txq_unlock_complete(sc, txq); + return 0; } From 60ce314d1750fef843e9db70050e09e49f838b69 Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Wed, 18 Sep 2013 21:21:35 -0500 Subject: [PATCH 281/523] rtlwifi: Align private space in rtl_priv struct The private array at the end of the rtl_priv struct is not aligned. On ARM architecture, this causes an alignment trap and is fixed by aligning that array with __align(sizeof(void *)). That should properly align that space according to the requirements of all architectures. Reported-by: Jason Andrews Tested-by: Jason Andrews Signed-off-by: Larry Finger Cc: Stable Signed-off-by: John W. Linville --- drivers/net/wireless/rtlwifi/wifi.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/rtlwifi/wifi.h b/drivers/net/wireless/rtlwifi/wifi.h index cc03e7c87cbe..703258742d28 100644 --- a/drivers/net/wireless/rtlwifi/wifi.h +++ b/drivers/net/wireless/rtlwifi/wifi.h @@ -2057,7 +2057,7 @@ struct rtl_priv { that it points to the data allocated beyond this structure like: rtl_pci_priv or rtl_usb_priv */ - u8 priv[0]; + u8 priv[0] __aligned(sizeof(void *)); }; #define rtl_priv(hw) (((struct rtl_priv *)(hw)->priv)) From b7be1522def9a9988b67afd0be999c50a96394b5 Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Fri, 20 Sep 2013 19:56:45 -0700 Subject: [PATCH 282/523] mwifiex: fix PCIe hs_cfg cancel cmd timeout For pcie8897, the hs_cfg cancel command (0xe5) times out when host comes out of suspend. This is caused by an incompleted host sleep handshake between driver and firmware. Like SDIO interface, PCIe also needs to go through firmware power save events to complete the handshake for host sleep configuration. Only USB interface doesn't require power save events for hs_cfg. Cc: # 3.10+ Signed-off-by: Bing Zhao Signed-off-by: Amitkumar Karwar Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/cmdevt.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/mwifiex/cmdevt.c b/drivers/net/wireless/mwifiex/cmdevt.c index 2d761477d15e..a6c46f3b6e3a 100644 --- a/drivers/net/wireless/mwifiex/cmdevt.c +++ b/drivers/net/wireless/mwifiex/cmdevt.c @@ -1155,7 +1155,7 @@ int mwifiex_ret_802_11_hs_cfg(struct mwifiex_private *priv, uint32_t conditions = le32_to_cpu(phs_cfg->params.hs_config.conditions); if (phs_cfg->action == cpu_to_le16(HS_ACTIVATE) && - adapter->iface_type == MWIFIEX_SDIO) { + adapter->iface_type != MWIFIEX_USB) { mwifiex_hs_activated_event(priv, true); return 0; } else { @@ -1167,8 +1167,7 @@ int mwifiex_ret_802_11_hs_cfg(struct mwifiex_private *priv, } if (conditions != HS_CFG_CANCEL) { adapter->is_hs_configured = true; - if (adapter->iface_type == MWIFIEX_USB || - adapter->iface_type == MWIFIEX_PCIE) + if (adapter->iface_type == MWIFIEX_USB) mwifiex_hs_activated_event(priv, true); } else { adapter->is_hs_configured = false; From c4fb19d21b003ec99ec490ba2cb60baffabc73f3 Mon Sep 17 00:00:00 2001 From: Solomon Peachy Date: Mon, 23 Sep 2013 16:00:03 -0400 Subject: [PATCH 283/523] Revert "cw1200: Don't perform SPI transfers in interrupt context" This reverts commit aec8e88c947b7017e2b4bbcb68a4bfc4a1f8ad35. This solution turned out to cause interrupt delivery problems, and rather than trying to fix this approach, it has been scrapped in favor of an alternative (and far simpler) implementation. Signed-off-by: Solomon Peachy Signed-off-by: John W. Linville --- drivers/net/wireless/cw1200/cw1200_spi.c | 19 +++---------------- drivers/net/wireless/cw1200/fwio.c | 2 +- drivers/net/wireless/cw1200/hwbus.h | 1 - drivers/net/wireless/cw1200/hwio.c | 15 --------------- 4 files changed, 4 insertions(+), 33 deletions(-) diff --git a/drivers/net/wireless/cw1200/cw1200_spi.c b/drivers/net/wireless/cw1200/cw1200_spi.c index f5e6b489ed32..5a64ac963009 100644 --- a/drivers/net/wireless/cw1200/cw1200_spi.c +++ b/drivers/net/wireless/cw1200/cw1200_spi.c @@ -42,7 +42,6 @@ struct hwbus_priv { spinlock_t lock; /* Serialize all bus operations */ wait_queue_head_t wq; int claimed; - int irq_disabled; }; #define SDIO_TO_SPI_ADDR(addr) ((addr & 0x1f)>>2) @@ -238,8 +237,6 @@ static irqreturn_t cw1200_spi_irq_handler(int irq, void *dev_id) struct hwbus_priv *self = dev_id; if (self->core) { - disable_irq_nosync(self->func->irq); - self->irq_disabled = 1; cw1200_irq_handler(self->core); return IRQ_HANDLED; } else { @@ -273,22 +270,13 @@ exit: static int cw1200_spi_irq_unsubscribe(struct hwbus_priv *self) { + int ret = 0; + pr_debug("SW IRQ unsubscribe\n"); disable_irq_wake(self->func->irq); free_irq(self->func->irq, self); - return 0; -} - -static int cw1200_spi_irq_enable(struct hwbus_priv *self, int enable) -{ - /* Disables are handled by the interrupt handler */ - if (enable && self->irq_disabled) { - enable_irq(self->func->irq); - self->irq_disabled = 0; - } - - return 0; + return ret; } static int cw1200_spi_off(const struct cw1200_platform_data_spi *pdata) @@ -368,7 +356,6 @@ static struct hwbus_ops cw1200_spi_hwbus_ops = { .unlock = cw1200_spi_unlock, .align_size = cw1200_spi_align_size, .power_mgmt = cw1200_spi_pm, - .irq_enable = cw1200_spi_irq_enable, }; /* Probe Function to be called by SPI stack when device is discovered */ diff --git a/drivers/net/wireless/cw1200/fwio.c b/drivers/net/wireless/cw1200/fwio.c index 0b2061bbc68b..acdff0f7f952 100644 --- a/drivers/net/wireless/cw1200/fwio.c +++ b/drivers/net/wireless/cw1200/fwio.c @@ -485,7 +485,7 @@ int cw1200_load_firmware(struct cw1200_common *priv) /* Enable interrupt signalling */ priv->hwbus_ops->lock(priv->hwbus_priv); - ret = __cw1200_irq_enable(priv, 2); + ret = __cw1200_irq_enable(priv, 1); priv->hwbus_ops->unlock(priv->hwbus_priv); if (ret < 0) goto unsubscribe; diff --git a/drivers/net/wireless/cw1200/hwbus.h b/drivers/net/wireless/cw1200/hwbus.h index 51dfb3a90735..8b2fc831c3de 100644 --- a/drivers/net/wireless/cw1200/hwbus.h +++ b/drivers/net/wireless/cw1200/hwbus.h @@ -28,7 +28,6 @@ struct hwbus_ops { void (*unlock)(struct hwbus_priv *self); size_t (*align_size)(struct hwbus_priv *self, size_t size); int (*power_mgmt)(struct hwbus_priv *self, bool suspend); - int (*irq_enable)(struct hwbus_priv *self, int enable); }; #endif /* CW1200_HWBUS_H */ diff --git a/drivers/net/wireless/cw1200/hwio.c b/drivers/net/wireless/cw1200/hwio.c index 41bd7615ccaa..ff230b7aeedd 100644 --- a/drivers/net/wireless/cw1200/hwio.c +++ b/drivers/net/wireless/cw1200/hwio.c @@ -273,21 +273,6 @@ int __cw1200_irq_enable(struct cw1200_common *priv, int enable) u16 val16; int ret; - /* We need to do this hack because the SPI layer can sleep on I/O - and the general path involves I/O to the device in interrupt - context. - - However, the initial enable call needs to go to the hardware. - - We don't worry about shutdown because we do a full reset which - clears the interrupt enabled bits. - */ - if (priv->hwbus_ops->irq_enable) { - ret = priv->hwbus_ops->irq_enable(priv->hwbus_priv, enable); - if (ret || enable < 2) - return ret; - } - if (HIF_8601_SILICON == priv->hw_type) { ret = __cw1200_reg_read_32(priv, ST90TDS_CONFIG_REG_ID, &val32); if (ret < 0) { From 87421cb6010a2f6494938fbe0a95e1b096b3b7af Mon Sep 17 00:00:00 2001 From: Solomon Peachy Date: Mon, 23 Sep 2013 16:00:04 -0400 Subject: [PATCH 284/523] cw1200: Use a threaded oneshot irq handler for cw1200_spi This supercedes the older patch ("cw1200: Don't perform SPI transfers in interrupt context") that badly attempted to fix this problem. This is a far simpler solution, which has the added benefit of actually working. Signed-off-by: Solomon Peachy Signed-off-by: John W. Linville --- drivers/net/wireless/cw1200/cw1200_spi.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/cw1200/cw1200_spi.c b/drivers/net/wireless/cw1200/cw1200_spi.c index 5a64ac963009..899cad34ccd3 100644 --- a/drivers/net/wireless/cw1200/cw1200_spi.c +++ b/drivers/net/wireless/cw1200/cw1200_spi.c @@ -250,9 +250,10 @@ static int cw1200_spi_irq_subscribe(struct hwbus_priv *self) pr_debug("SW IRQ subscribe\n"); - ret = request_any_context_irq(self->func->irq, cw1200_spi_irq_handler, - IRQF_TRIGGER_HIGH, - "cw1200_wlan_irq", self); + ret = request_threaded_irq(self->func->irq, NULL, + cw1200_spi_irq_handler, + IRQF_TRIGGER_HIGH | IRQF_ONESHOT, + "cw1200_wlan_irq", self); if (WARN_ON(ret < 0)) goto exit; From 1e43692cdb7cc445d6347d8a5207d9cef0c71434 Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Tue, 24 Sep 2013 21:56:46 +0200 Subject: [PATCH 285/523] p54usb: add USB ID for Corega WLUSB2GTST USB adapter Added USB ID for Corega WLUSB2GTST USB adapter. Cc: Reported-by: Joerg Kalisch Signed-off-by: Christian Lamparter Signed-off-by: John W. Linville --- drivers/net/wireless/p54/p54usb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/p54/p54usb.c b/drivers/net/wireless/p54/p54usb.c index 7fa81d13b4e5..e328d3058c41 100644 --- a/drivers/net/wireless/p54/p54usb.c +++ b/drivers/net/wireless/p54/p54usb.c @@ -83,6 +83,7 @@ static struct usb_device_id p54u_table[] = { {USB_DEVICE(0x06a9, 0x000e)}, /* Westell 802.11g USB (A90-211WG-01) */ {USB_DEVICE(0x06b9, 0x0121)}, /* Thomson SpeedTouch 121g */ {USB_DEVICE(0x0707, 0xee13)}, /* SMC 2862W-G version 2 */ + {USB_DEVICE(0x07aa, 0x0020)}, /* Corega WLUSB2GTST USB */ {USB_DEVICE(0x0803, 0x4310)}, /* Zoom 4410a */ {USB_DEVICE(0x083a, 0x4521)}, /* Siemens Gigaset USB Adapter 54 version 2 */ {USB_DEVICE(0x083a, 0x4531)}, /* T-Com Sinus 154 data II */ From bd1c6142edce787b8ac1be15635f845aa9905333 Mon Sep 17 00:00:00 2001 From: Amitkumar Karwar Date: Tue, 24 Sep 2013 19:31:24 -0700 Subject: [PATCH 286/523] mwifiex: fix hang issue for USB chipsets Bug 60815 - Interface hangs in mwifiex_usb https://bugzilla.kernel.org/show_bug.cgi?id=60815 We have 4 bytes of interface header for packets delivered to SDIO and PCIe, but not for USB interface. In Tx AMSDU case, currently 4 bytes of garbage data is unnecessarily appended for USB packets. This sometimes leads to a firmware hang, because it may not interpret the data packet correctly. Problem is fixed by removing this redundant headroom for USB. Cc: # 3.5+ Tested-by: Dmitry Khromov Signed-off-by: Amitkumar Karwar Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/11n_aggr.c | 3 ++- drivers/net/wireless/mwifiex/11n_aggr.h | 2 +- drivers/net/wireless/mwifiex/wmm.c | 3 +-- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/mwifiex/11n_aggr.c b/drivers/net/wireless/mwifiex/11n_aggr.c index 21c688264708..1214c587fd08 100644 --- a/drivers/net/wireless/mwifiex/11n_aggr.c +++ b/drivers/net/wireless/mwifiex/11n_aggr.c @@ -150,7 +150,7 @@ mwifiex_11n_form_amsdu_txpd(struct mwifiex_private *priv, */ int mwifiex_11n_aggregate_pkt(struct mwifiex_private *priv, - struct mwifiex_ra_list_tbl *pra_list, int headroom, + struct mwifiex_ra_list_tbl *pra_list, int ptrindex, unsigned long ra_list_flags) __releases(&priv->wmm.ra_list_spinlock) { @@ -160,6 +160,7 @@ mwifiex_11n_aggregate_pkt(struct mwifiex_private *priv, int pad = 0, ret; struct mwifiex_tx_param tx_param; struct txpd *ptx_pd = NULL; + int headroom = adapter->iface_type == MWIFIEX_USB ? 0 : INTF_HEADER_LEN; skb_src = skb_peek(&pra_list->skb_head); if (!skb_src) { diff --git a/drivers/net/wireless/mwifiex/11n_aggr.h b/drivers/net/wireless/mwifiex/11n_aggr.h index 900e1c62a0cc..892098d6a696 100644 --- a/drivers/net/wireless/mwifiex/11n_aggr.h +++ b/drivers/net/wireless/mwifiex/11n_aggr.h @@ -26,7 +26,7 @@ int mwifiex_11n_deaggregate_pkt(struct mwifiex_private *priv, struct sk_buff *skb); int mwifiex_11n_aggregate_pkt(struct mwifiex_private *priv, - struct mwifiex_ra_list_tbl *ptr, int headroom, + struct mwifiex_ra_list_tbl *ptr, int ptr_index, unsigned long flags) __releases(&priv->wmm.ra_list_spinlock); diff --git a/drivers/net/wireless/mwifiex/wmm.c b/drivers/net/wireless/mwifiex/wmm.c index 2e8f9cdea54d..95fa3599b407 100644 --- a/drivers/net/wireless/mwifiex/wmm.c +++ b/drivers/net/wireless/mwifiex/wmm.c @@ -1239,8 +1239,7 @@ mwifiex_dequeue_tx_packet(struct mwifiex_adapter *adapter) if (enable_tx_amsdu && mwifiex_is_amsdu_allowed(priv, tid) && mwifiex_is_11n_aggragation_possible(priv, ptr, adapter->tx_buf_size)) - mwifiex_11n_aggregate_pkt(priv, ptr, INTF_HEADER_LEN, - ptr_index, flags); + mwifiex_11n_aggregate_pkt(priv, ptr, ptr_index, flags); /* ra_list_spinlock has been freed in mwifiex_11n_aggregate_pkt() */ else From 346ece0b7ba2730b4d633b9e371fe55488803102 Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Tue, 24 Sep 2013 19:31:25 -0700 Subject: [PATCH 287/523] mwifiex: fix NULL pointer dereference in usb suspend handler Bug 60815 - Interface hangs in mwifiex_usb https://bugzilla.kernel.org/show_bug.cgi?id=60815 [ 2.883807] BUG: unable to handle kernel NULL pointer dereference at 0000000000000048 [ 2.883813] IP: [] pfifo_fast_enqueue+0x90/0x90 [ 2.883834] CPU: 1 PID: 3220 Comm: kworker/u8:90 Not tainted 3.11.1-monotone-l0 #6 [ 2.883834] Hardware name: Microsoft Corporation Surface with Windows 8 Pro/Surface with Windows 8 Pro, BIOS 1.03.0450 03/29/2013 On Surface Pro, suspend to ram gives a NULL pointer dereference in pfifo_fast_enqueue(). The stack trace reveals that the offending call is clearing carrier in mwifiex_usb suspend handler. Since commit 1499d9f "mwifiex: don't drop carrier flag over suspend" has removed the carrier flag handling over suspend/resume in SDIO and PCIe drivers, I'm removing it in USB driver too. This also fixes the bug for Surface Pro. Cc: # 3.5+ Tested-by: Dmitry Khromov Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/usb.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/net/wireless/mwifiex/usb.c b/drivers/net/wireless/mwifiex/usb.c index 2472d4b7f00e..1c70b8d09227 100644 --- a/drivers/net/wireless/mwifiex/usb.c +++ b/drivers/net/wireless/mwifiex/usb.c @@ -447,9 +447,6 @@ static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message) */ adapter->is_suspended = true; - for (i = 0; i < adapter->priv_num; i++) - netif_carrier_off(adapter->priv[i]->netdev); - if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) usb_kill_urb(card->rx_cmd.urb); @@ -509,10 +506,6 @@ static int mwifiex_usb_resume(struct usb_interface *intf) MWIFIEX_RX_CMD_BUF_SIZE); } - for (i = 0; i < adapter->priv_num; i++) - if (adapter->priv[i]->media_connected) - netif_carrier_on(adapter->priv[i]->netdev); - /* Disable Host Sleep */ if (adapter->hs_activated) mwifiex_cancel_hs(mwifiex_get_priv(adapter, From db4efbbeb457b6f9f4d8c4b090d1170d12f026e1 Mon Sep 17 00:00:00 2001 From: Arend van Spriel Date: Wed, 25 Sep 2013 12:11:01 +0200 Subject: [PATCH 288/523] brcmfmac: obtain platform data upon module initialization The driver uses platform_driver_probe() to obtain platform data if any. However, that function is placed in the .init section so it must be called upon driver module initialization. The problem was reported by Fenguang Wu resulting in a kernel oops because the .init section was already freed. [ 48.966342] Switched to clocksource tsc [ 48.970002] kernel tried to execute NX-protected page - exploit attempt? (uid: 0) [ 48.970851] BUG: unable to handle kernel paging request at ffffffff82196446 [ 48.970957] IP: [] classes_init+0x26/0x26 [ 48.970957] PGD 1e76067 PUD 1e77063 PMD f388063 PTE 8000000002196163 [ 48.970957] Oops: 0011 [#1] [ 48.970957] CPU: 0 PID: 17 Comm: kworker/0:1 Not tainted 3.11.0-rc7-00444-gc52dd7f #23 [ 48.970957] Workqueue: events brcmf_driver_init [ 48.970957] task: ffff8800001d2000 ti: ffff8800001d4000 task.ti: ffff8800001d4000 [ 48.970957] RIP: 0010:[] [] classes_init+0x26/0x26 [ 48.970957] RSP: 0000:ffff8800001d5d40 EFLAGS: 00000286 [ 48.970957] RAX: 0000000000000001 RBX: ffffffff820c5620 RCX: 0000000000000000 [ 48.970957] RDX: 0000000000000001 RSI: ffffffff816f7380 RDI: ffffffff820c56c0 [ 48.970957] RBP: ffff8800001d5d50 R08: ffff8800001d2508 R09: 0000000000000002 [ 48.970957] R10: 0000000000000000 R11: 0001f7ce298c5620 R12: ffff8800001c76b0 [ 48.970957] R13: ffffffff81e91d40 R14: 0000000000000000 R15: ffff88000e0ce300 [ 48.970957] FS: 0000000000000000(0000) GS:ffffffff81e84000(0000) knlGS:0000000000000000 [ 48.970957] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 48.970957] CR2: ffffffff82196446 CR3: 0000000001e75000 CR4: 00000000000006b0 [ 48.970957] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 48.970957] DR3: 0000000000000000 DR6: 0000000000000000 DR7: 0000000000000000 [ 48.970957] Stack: [ 48.970957] ffffffff816f7df8 ffffffff820c5620 ffff8800001d5d60 ffffffff816eeec9 [ 48.970957] ffff8800001d5de0 ffffffff81073dc5 ffffffff81073d68 ffff8800001d5db8 [ 48.970957] 0000000000000086 ffffffff820c5620 ffffffff824f7fd0 0000000000000000 [ 48.970957] Call Trace: [ 48.970957] [] ? brcmf_sdio_init+0x18/0x70 [ 48.970957] [] brcmf_driver_init+0x9/0x10 [ 48.970957] [] process_one_work+0x1d5/0x480 [ 48.970957] [] ? process_one_work+0x178/0x480 [ 48.970957] [] worker_thread+0x118/0x3a0 [ 48.970957] [] ? process_one_work+0x480/0x480 [ 48.970957] [] kthread+0xe7/0xf0 [ 48.970957] [] ? finish_task_switch.constprop.57+0x37/0xd0 [ 48.970957] [] ? __kthread_parkme+0x80/0x80 [ 48.970957] [] ret_from_fork+0x7a/0xb0 [ 48.970957] [] ? __kthread_parkme+0x80/0x80 [ 48.970957] Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc [ 48.970957] RIP [] classes_init+0x26/0x26 [ 48.970957] RSP [ 48.970957] CR2: ffffffff82196446 [ 48.970957] ---[ end trace 62980817cd525f14 ]--- Cc: # 3.10.x, 3.11.x Reported-by: Fengguang Wu Reviewed-by: Hante Meuleman Reviewed-by: Pieter-Paul Giesberts Tested-by: Fengguang Wu Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville --- .../brcm80211/brcmfmac/bcmsdh_sdmmc.c | 28 +++++++++---------- .../net/wireless/brcm80211/brcmfmac/dhd_bus.h | 3 +- .../wireless/brcm80211/brcmfmac/dhd_linux.c | 14 ++++++---- drivers/net/wireless/brcm80211/brcmfmac/usb.c | 2 +- 4 files changed, 24 insertions(+), 23 deletions(-) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c index 64f4a2bc8dde..c3462b75bd08 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c @@ -464,8 +464,6 @@ static struct sdio_driver brcmf_sdmmc_driver = { static int brcmf_sdio_pd_probe(struct platform_device *pdev) { - int ret; - brcmf_dbg(SDIO, "Enter\n"); brcmfmac_sdio_pdata = pdev->dev.platform_data; @@ -473,11 +471,7 @@ static int brcmf_sdio_pd_probe(struct platform_device *pdev) if (brcmfmac_sdio_pdata->power_on) brcmfmac_sdio_pdata->power_on(); - ret = sdio_register_driver(&brcmf_sdmmc_driver); - if (ret) - brcmf_err("sdio_register_driver failed: %d\n", ret); - - return ret; + return 0; } static int brcmf_sdio_pd_remove(struct platform_device *pdev) @@ -500,6 +494,15 @@ static struct platform_driver brcmf_sdio_pd = { } }; +void brcmf_sdio_register(void) +{ + int ret; + + ret = sdio_register_driver(&brcmf_sdmmc_driver); + if (ret) + brcmf_err("sdio_register_driver failed: %d\n", ret); +} + void brcmf_sdio_exit(void) { brcmf_dbg(SDIO, "Enter\n"); @@ -510,18 +513,13 @@ void brcmf_sdio_exit(void) sdio_unregister_driver(&brcmf_sdmmc_driver); } -void brcmf_sdio_init(void) +void __init brcmf_sdio_init(void) { int ret; brcmf_dbg(SDIO, "Enter\n"); ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe); - if (ret == -ENODEV) { - brcmf_dbg(SDIO, "No platform data available, registering without.\n"); - ret = sdio_register_driver(&brcmf_sdmmc_driver); - } - - if (ret) - brcmf_err("driver registration failed: %d\n", ret); + if (ret == -ENODEV) + brcmf_dbg(SDIO, "No platform data available.\n"); } diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h b/drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h index f7c1985844e4..74156f84180c 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h @@ -156,10 +156,11 @@ extern int brcmf_bus_start(struct device *dev); #ifdef CONFIG_BRCMFMAC_SDIO extern void brcmf_sdio_exit(void); extern void brcmf_sdio_init(void); +extern void brcmf_sdio_register(void); #endif #ifdef CONFIG_BRCMFMAC_USB extern void brcmf_usb_exit(void); -extern void brcmf_usb_init(void); +extern void brcmf_usb_register(void); #endif #endif /* _BRCMF_BUS_H_ */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c index e067aec1fbf1..40e7f854e10f 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c @@ -1231,21 +1231,23 @@ u32 brcmf_get_chip_info(struct brcmf_if *ifp) return bus->chip << 4 | bus->chiprev; } -static void brcmf_driver_init(struct work_struct *work) +static void brcmf_driver_register(struct work_struct *work) { - brcmf_debugfs_init(); - #ifdef CONFIG_BRCMFMAC_SDIO - brcmf_sdio_init(); + brcmf_sdio_register(); #endif #ifdef CONFIG_BRCMFMAC_USB - brcmf_usb_init(); + brcmf_usb_register(); #endif } -static DECLARE_WORK(brcmf_driver_work, brcmf_driver_init); +static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register); static int __init brcmfmac_module_init(void) { + brcmf_debugfs_init(); +#ifdef CONFIG_BRCMFMAC_SDIO + brcmf_sdio_init(); +#endif if (!schedule_work(&brcmf_driver_work)) return -EBUSY; diff --git a/drivers/net/wireless/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/brcm80211/brcmfmac/usb.c index 39e01a7c8556..f4aea47e0730 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/usb.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/usb.c @@ -1539,7 +1539,7 @@ void brcmf_usb_exit(void) brcmf_release_fw(&fw_image_list); } -void brcmf_usb_init(void) +void brcmf_usb_register(void) { brcmf_dbg(USB, "Enter\n"); INIT_LIST_HEAD(&fw_image_list); From 2bedea8f26c92e2610f2f67889144990749461e0 Mon Sep 17 00:00:00 2001 From: Arend van Spriel Date: Wed, 25 Sep 2013 12:11:02 +0200 Subject: [PATCH 289/523] bcma: make bcma_core_pci_{up,down}() callable from atomic context This patch removes the bcma_core_pci_power_save() call from the bcma_core_pci_{up,down}() functions as it tries to schedule thus requiring to call them from non-atomic context. The function bcma_core_pci_power_save() is now exported so the calling module can explicitly use it in non-atomic context. This fixes the 'scheduling while atomic' issue reported by Tod Jackson and Joe Perches. [ 13.210710] BUG: scheduling while atomic: dhcpcd/1800/0x00000202 [ 13.210718] Modules linked in: brcmsmac nouveau coretemp kvm_intel kvm cordic brcmutil bcma dell_wmi atl1c ttm mxm_wmi wmi [ 13.210756] CPU: 2 PID: 1800 Comm: dhcpcd Not tainted 3.11.0-wl #1 [ 13.210762] Hardware name: Alienware M11x R2/M11x R2, BIOS A04 11/23/2010 [ 13.210767] ffff880177c92c40 ffff880170fd1948 ffffffff8169af5b 0000000000000007 [ 13.210777] ffff880170fd1ab0 ffff880170fd1958 ffffffff81697ee2 ffff880170fd19d8 [ 13.210785] ffffffff816a19f5 00000000000f4240 000000000000d080 ffff880170fd1fd8 [ 13.210794] Call Trace: [ 13.210813] [] dump_stack+0x4f/0x84 [ 13.210826] [] __schedule_bug+0x43/0x51 [ 13.210837] [] __schedule+0x6e5/0x810 [ 13.210845] [] schedule+0x24/0x70 [ 13.210855] [] schedule_hrtimeout_range_clock+0x10c/0x150 [ 13.210867] [] ? update_rmtp+0x60/0x60 [ 13.210877] [] ? hrtimer_start_range_ns+0xf/0x20 [ 13.210887] [] schedule_hrtimeout_range+0xe/0x10 [ 13.210897] [] usleep_range+0x3b/0x40 [ 13.210910] [] bcma_pcie_mdio_set_phy.isra.3+0x4f/0x80 [bcma] [ 13.210921] [] bcma_pcie_mdio_write.isra.4+0xbf/0xd0 [bcma] [ 13.210932] [] bcma_pcie_mdio_writeread.isra.6.constprop.13+0x18/0x30 [bcma] [ 13.210942] [] bcma_core_pci_power_save+0x3e/0x80 [bcma] [ 13.210953] [] bcma_core_pci_up+0x2d/0x60 [bcma] [ 13.210975] [] brcms_c_up+0xfc/0x430 [brcmsmac] [ 13.210989] [] brcms_up+0x1d/0x20 [brcmsmac] [ 13.211003] [] brcms_ops_start+0x298/0x340 [brcmsmac] [ 13.211020] [] ? cfg80211_netdev_notifier_call+0xd2/0x5f0 [ 13.211030] [] ? packet_notifier+0xad/0x1d0 [ 13.211064] [] ieee80211_do_open+0x325/0xf80 [ 13.211076] [] ? __raw_notifier_call_chain+0x9/0x10 [ 13.211086] [] ieee80211_open+0x71/0x80 [ 13.211101] [] __dev_open+0x87/0xe0 [ 13.211109] [] __dev_change_flags+0x9c/0x180 [ 13.211117] [] dev_change_flags+0x23/0x70 [ 13.211127] [] devinet_ioctl+0x5b8/0x6a0 [ 13.211136] [] inet_ioctl+0x75/0x90 [ 13.211147] [] sock_do_ioctl+0x2b/0x70 [ 13.211155] [] sock_ioctl+0x71/0x2a0 [ 13.211169] [] do_vfs_ioctl+0x87/0x520 [ 13.211180] [] ? ____fput+0x9/0x10 [ 13.211198] [] ? task_work_run+0x9c/0xd0 [ 13.211202] [] SyS_ioctl+0x91/0xb0 [ 13.211208] [] system_call_fastpath+0x16/0x1b [ 13.211217] NOHZ: local_softirq_pending 202 The issue was introduced in v3.11 kernel by following commit: commit aa51e598d04c6acf5477934cd6383f5a17ce9029 Author: Hauke Mehrtens Date: Sat Aug 24 00:32:31 2013 +0200 brcmsmac: use bcma PCIe up and down functions replace the calls to bcma_core_pci_extend_L1timer() by calls to the newly introduced bcma_core_pci_ip() and bcma_core_pci_down() Signed-off-by: Hauke Mehrtens Cc: Arend van Spriel Signed-off-by: John W. Linville This fix has been discussed with Hauke Mehrtens [1] selection option 3) and is intended for v3.12. Ref: [1] http://mid.gmane.org/5239B12D.3040206@hauke-m.de Cc: # 3.11.x Cc: Tod Jackson Cc: Joe Perches Cc: Rafal Milecki Cc: Hauke Mehrtens Reviewed-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville --- drivers/bcma/driver_pci.c | 49 +++++++++++++++------------- include/linux/bcma/bcma_driver_pci.h | 1 + 2 files changed, 27 insertions(+), 23 deletions(-) diff --git a/drivers/bcma/driver_pci.c b/drivers/bcma/driver_pci.c index c9fd6943ce45..50329d1057ed 100644 --- a/drivers/bcma/driver_pci.c +++ b/drivers/bcma/driver_pci.c @@ -210,25 +210,6 @@ static void bcma_core_pci_config_fixup(struct bcma_drv_pci *pc) } } -static void bcma_core_pci_power_save(struct bcma_drv_pci *pc, bool up) -{ - u16 data; - - if (pc->core->id.rev >= 15 && pc->core->id.rev <= 20) { - data = up ? 0x74 : 0x7C; - bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, - BCMA_CORE_PCI_MDIO_BLK1_MGMT1, 0x7F64); - bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, - BCMA_CORE_PCI_MDIO_BLK1_MGMT3, data); - } else if (pc->core->id.rev >= 21 && pc->core->id.rev <= 22) { - data = up ? 0x75 : 0x7D; - bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, - BCMA_CORE_PCI_MDIO_BLK1_MGMT1, 0x7E65); - bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, - BCMA_CORE_PCI_MDIO_BLK1_MGMT3, data); - } -} - /************************************************** * Init. **************************************************/ @@ -255,6 +236,32 @@ void bcma_core_pci_init(struct bcma_drv_pci *pc) bcma_core_pci_clientmode_init(pc); } +void bcma_core_pci_power_save(struct bcma_bus *bus, bool up) +{ + struct bcma_drv_pci *pc; + u16 data; + + if (bus->hosttype != BCMA_HOSTTYPE_PCI) + return; + + pc = &bus->drv_pci[0]; + + if (pc->core->id.rev >= 15 && pc->core->id.rev <= 20) { + data = up ? 0x74 : 0x7C; + bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, + BCMA_CORE_PCI_MDIO_BLK1_MGMT1, 0x7F64); + bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, + BCMA_CORE_PCI_MDIO_BLK1_MGMT3, data); + } else if (pc->core->id.rev >= 21 && pc->core->id.rev <= 22) { + data = up ? 0x75 : 0x7D; + bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, + BCMA_CORE_PCI_MDIO_BLK1_MGMT1, 0x7E65); + bcma_pcie_mdio_writeread(pc, BCMA_CORE_PCI_MDIO_BLK1, + BCMA_CORE_PCI_MDIO_BLK1_MGMT3, data); + } +} +EXPORT_SYMBOL_GPL(bcma_core_pci_power_save); + int bcma_core_pci_irq_ctl(struct bcma_drv_pci *pc, struct bcma_device *core, bool enable) { @@ -310,8 +317,6 @@ void bcma_core_pci_up(struct bcma_bus *bus) pc = &bus->drv_pci[0]; - bcma_core_pci_power_save(pc, true); - bcma_core_pci_extend_L1timer(pc, true); } EXPORT_SYMBOL_GPL(bcma_core_pci_up); @@ -326,7 +331,5 @@ void bcma_core_pci_down(struct bcma_bus *bus) pc = &bus->drv_pci[0]; bcma_core_pci_extend_L1timer(pc, false); - - bcma_core_pci_power_save(pc, false); } EXPORT_SYMBOL_GPL(bcma_core_pci_down); diff --git a/include/linux/bcma/bcma_driver_pci.h b/include/linux/bcma/bcma_driver_pci.h index d66033f418c9..0333e605ea0d 100644 --- a/include/linux/bcma/bcma_driver_pci.h +++ b/include/linux/bcma/bcma_driver_pci.h @@ -242,6 +242,7 @@ extern int bcma_core_pci_irq_ctl(struct bcma_drv_pci *pc, struct bcma_device *core, bool enable); extern void bcma_core_pci_up(struct bcma_bus *bus); extern void bcma_core_pci_down(struct bcma_bus *bus); +extern void bcma_core_pci_power_save(struct bcma_bus *bus, bool up); extern int bcma_core_pci_pcibios_map_irq(const struct pci_dev *dev); extern int bcma_core_pci_plat_dev_init(struct pci_dev *dev); From c7515d2365a6b8a018950198ebe1f5be793cd4bb Mon Sep 17 00:00:00 2001 From: Arend van Spriel Date: Wed, 25 Sep 2013 12:11:03 +0200 Subject: [PATCH 290/523] brcmsmac: call bcma_core_pci_power_save() from non-atomic context This patch adds explicit call to bcma_core_pci_power_save() from a non-atomic context resolving 'scheduling while atomic' issue. [ 13.224317] BUG: scheduling while atomic: dhcpcd/1800/0x00000202 [ 13.224322] Modules linked in: brcmsmac nouveau coretemp kvm_intel kvm cordic brcmutil bcma dell_wmi atl1c ttm mxm_wmi wmi [ 13.224354] CPU: 0 PID: 1800 Comm: dhcpcd Tainted: G W 3.11.0-wl #1 [ 13.224359] Hardware name: Alienware M11x R2/M11x R2, BIOS A04 11/23/2010 [ 13.224363] ffff880177c12c40 ffff880170fd1968 ffffffff8169af5b 0000000000000007 [ 13.224374] ffff880170fd1ad0 ffff880170fd1978 ffffffff81697ee2 ffff880170fd19f8 [ 13.224383] ffffffff816a19f5 00000000000f4240 000000000000d080 ffff880170fd1fd8 [ 13.224391] Call Trace: [ 13.224399] [] dump_stack+0x4f/0x84 [ 13.224403] [] __schedule_bug+0x43/0x51 [ 13.224409] [] __schedule+0x6e5/0x810 [ 13.224412] [] schedule+0x24/0x70 [ 13.224416] [] schedule_hrtimeout_range_clock+0x10c/0x150 [ 13.224420] [] ? update_rmtp+0x60/0x60 [ 13.224424] [] ? hrtimer_start_range_ns+0xf/0x20 [ 13.224429] [] schedule_hrtimeout_range+0xe/0x10 [ 13.224432] [] usleep_range+0x3b/0x40 [ 13.224437] [] bcma_pcie_mdio_read.isra.5+0x8a/0x100 [bcma] [ 13.224442] [] bcma_pcie_mdio_writeread.isra.6.constprop.13+0x25/0x30 [bcma] [ 13.224448] [] bcma_core_pci_power_save+0x49/0x80 [bcma] [ 13.224452] [] bcma_core_pci_up+0x2d/0x60 [bcma] [ 13.224460] [] brcms_c_up+0xfc/0x430 [brcmsmac] [ 13.224467] [] brcms_up+0x1d/0x20 [brcmsmac] [ 13.224473] [] brcms_ops_start+0x298/0x340 [brcmsmac] [ 13.224478] [] ? cfg80211_netdev_notifier_call+0xd2/0x5f0 [ 13.224483] [] ? packet_notifier+0xad/0x1d0 [ 13.224487] [] ieee80211_do_open+0x325/0xf80 [ 13.224491] [] ? __raw_notifier_call_chain+0x9/0x10 [ 13.224495] [] ieee80211_open+0x71/0x80 [ 13.224498] [] __dev_open+0x87/0xe0 [ 13.224502] [] __dev_change_flags+0x9c/0x180 [ 13.224505] [] dev_change_flags+0x23/0x70 [ 13.224509] [] devinet_ioctl+0x5b8/0x6a0 [ 13.224512] [] inet_ioctl+0x75/0x90 [ 13.224516] [] sock_do_ioctl+0x2b/0x70 [ 13.224519] [] sock_ioctl+0x71/0x2a0 [ 13.224523] [] do_vfs_ioctl+0x87/0x520 [ 13.224528] [] ? ____fput+0x9/0x10 [ 13.224533] [] ? task_work_run+0x9c/0xd0 [ 13.224537] [] SyS_ioctl+0x91/0xb0 [ 13.224541] [] system_call_fastpath+0x16/0x1b Cc: # 3.11.x Cc: Tod Jackson Cc: Joe Perches Cc: Rafal Milecki Cc: Hauke Mehrtens Reviewed-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville --- drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c index 3a6544710c8a..edc5d105ff98 100644 --- a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c +++ b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c @@ -457,6 +457,8 @@ static int brcms_ops_start(struct ieee80211_hw *hw) if (err != 0) brcms_err(wl->wlc->hw->d11core, "%s: brcms_up() returned %d\n", __func__, err); + + bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, true); return err; } @@ -479,6 +481,8 @@ static void brcms_ops_stop(struct ieee80211_hw *hw) return; } + bcma_core_pci_power_save(wl->wlc->hw->d11core->bus, false); + /* put driver in down state */ spin_lock_bh(&wl->lock); brcms_down(wl); From ad1260e9fbf768d6bed227d9604ebee76a84aae3 Mon Sep 17 00:00:00 2001 From: Ramneek Mehresh Date: Mon, 16 Sep 2013 15:11:33 +0530 Subject: [PATCH 291/523] fsl/usb: Resolve PHY_CLK_VLD instability issue for ULPI phy For controller versions greater than 1.6, setting ULPI_PHY_CLK_SEL bit when USB_EN bit is already set causes instability issues with PHY_CLK_VLD bit. So USB_EN is set only for IP controller version below 1.6 before setting ULPI_PHY_CLK_SEL bit Signed-off-by: Ramneek Mehresh Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-fsl.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 4449f565d6c6..d3166e693dcb 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -130,7 +130,7 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver, } /* Enable USB controller, 83xx or 8536 */ - if (pdata->have_sysif_regs) + if (pdata->have_sysif_regs && pdata->controller_ver < FSL_USB_VER_1_6) setbits32(hcd->regs + FSL_SOC_USB_CTRL, 0x4); /* Don't need to set host mode here. It will be done by tdi_reset() */ @@ -232,15 +232,9 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd, case FSL_USB2_PHY_ULPI: if (pdata->have_sysif_regs && pdata->controller_ver) { /* controller version 1.6 or above */ + clrbits32(non_ehci + FSL_SOC_USB_CTRL, UTMI_PHY_EN); setbits32(non_ehci + FSL_SOC_USB_CTRL, - ULPI_PHY_CLK_SEL); - /* - * Due to controller issue of PHY_CLK_VALID in ULPI - * mode, we set USB_CTRL_USB_EN before checking - * PHY_CLK_VALID, otherwise PHY_CLK_VALID doesn't work. - */ - clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL, - UTMI_PHY_EN, USB_CTRL_USB_EN); + ULPI_PHY_CLK_SEL | USB_CTRL_USB_EN); } portsc |= PORT_PTS_ULPI; break; From 2332575ef10a1bcf5ca485a6bf043831be11c7a0 Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Sat, 31 Aug 2013 09:15:44 +0200 Subject: [PATCH 292/523] tty: ar933x_uart: move devicetree binding documentation Commit 'tty: ar933x_uart: add device tree support and binding documentation' introduced a new doc in bindins/tty/serial. According to a recent thread [1] on the linux-serial list, the binding documentation of serial drivers should be added into bindings/serial. Move the documentation of qca,ar9330-uart to the correct place. 1. http://marc.info/?l=linux-serial&m=137771295411517 Cc: devicetree@vger.kernel.org Signed-off-by: Gabor Juhos Signed-off-by: Greg Kroah-Hartman --- .../devicetree/bindings/{tty => }/serial/qca,ar9330-uart.txt | 0 1 file changed, 0 insertions(+), 0 deletions(-) rename Documentation/devicetree/bindings/{tty => }/serial/qca,ar9330-uart.txt (100%) diff --git a/Documentation/devicetree/bindings/tty/serial/qca,ar9330-uart.txt b/Documentation/devicetree/bindings/serial/qca,ar9330-uart.txt similarity index 100% rename from Documentation/devicetree/bindings/tty/serial/qca,ar9330-uart.txt rename to Documentation/devicetree/bindings/serial/qca,ar9330-uart.txt From 207070f5221e2a901d56a49df9cde47d9b716cd7 Mon Sep 17 00:00:00 2001 From: Roger Luethi Date: Sat, 21 Sep 2013 14:24:11 +0200 Subject: [PATCH 293/523] via-rhine: fix VLAN priority field (PCP, IEEE 802.1p) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Outgoing packets sent by via-rhine have their VLAN PCP field off by one (when hardware acceleration is enabled). The TX descriptor expects only VID and PCP (without a CFI/DEI bit). Peter Boström noticed and reported the bug. Signed-off-by: Roger Luethi Cc: Peter Boström Signed-off-by: David S. Miller --- drivers/net/ethernet/via/via-rhine.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/via/via-rhine.c b/drivers/net/ethernet/via/via-rhine.c index c8f088ab5fdf..bdf697b184ae 100644 --- a/drivers/net/ethernet/via/via-rhine.c +++ b/drivers/net/ethernet/via/via-rhine.c @@ -32,7 +32,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #define DRV_NAME "via-rhine" -#define DRV_VERSION "1.5.0" +#define DRV_VERSION "1.5.1" #define DRV_RELDATE "2010-10-09" #include @@ -1704,7 +1704,12 @@ static netdev_tx_t rhine_start_tx(struct sk_buff *skb, cpu_to_le32(TXDESC | (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN)); if (unlikely(vlan_tx_tag_present(skb))) { - rp->tx_ring[entry].tx_status = cpu_to_le32((vlan_tx_tag_get(skb)) << 16); + u16 vid_pcp = vlan_tx_tag_get(skb); + + /* drop CFI/DEI bit, register needs VID and PCP */ + vid_pcp = (vid_pcp & VLAN_VID_MASK) | + ((vid_pcp & VLAN_PRIO_MASK) >> 1); + rp->tx_ring[entry].tx_status = cpu_to_le32((vid_pcp) << 16); /* request tagging */ rp->tx_ring[entry].desc_length |= cpu_to_le32(0x020000); } From 1aee351a739153529fbb98ee461777b2abd5e1c9 Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Mon, 2 Sep 2013 13:29:45 +0300 Subject: [PATCH 294/523] mei: make me client counters less error prone 1. u8 counters are prone to hard to detect overflow: make them unsigned long to match bit_ functions argument type 2. don't check me_clients_num for negativity, it is unsigned. 3. init all the me client counters from one place Cc: # 3.9+ Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/hbm.c | 10 ++++++---- drivers/misc/mei/mei_dev.h | 6 +++--- 2 files changed, 9 insertions(+), 7 deletions(-) diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c index 6127ab64bb39..0a0448326e9d 100644 --- a/drivers/misc/mei/hbm.c +++ b/drivers/misc/mei/hbm.c @@ -35,11 +35,15 @@ static void mei_hbm_me_cl_allocate(struct mei_device *dev) struct mei_me_client *clients; int b; + dev->me_clients_num = 0; + dev->me_client_presentation_num = 0; + dev->me_client_index = 0; + /* count how many ME clients we have */ for_each_set_bit(b, dev->me_clients_map, MEI_CLIENTS_MAX) dev->me_clients_num++; - if (dev->me_clients_num <= 0) + if (dev->me_clients_num == 0) return; kfree(dev->me_clients); @@ -221,7 +225,7 @@ static int mei_hbm_prop_req(struct mei_device *dev) struct hbm_props_request *prop_req; const size_t len = sizeof(struct hbm_props_request); unsigned long next_client_index; - u8 client_num; + unsigned long client_num; client_num = dev->me_client_presentation_num; @@ -677,8 +681,6 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) if (dev->dev_state == MEI_DEV_INIT_CLIENTS && dev->hbm_state == MEI_HBM_ENUM_CLIENTS) { dev->init_clients_timer = 0; - dev->me_client_presentation_num = 0; - dev->me_client_index = 0; mei_hbm_me_cl_allocate(dev); dev->hbm_state = MEI_HBM_CLIENT_PROPERTIES; diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 7b918b2fb894..456b322013e2 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -396,9 +396,9 @@ struct mei_device { struct mei_me_client *me_clients; /* Note: memory has to be allocated */ DECLARE_BITMAP(me_clients_map, MEI_CLIENTS_MAX); DECLARE_BITMAP(host_clients_map, MEI_CLIENTS_MAX); - u8 me_clients_num; - u8 me_client_presentation_num; - u8 me_client_index; + unsigned long me_clients_num; + unsigned long me_client_presentation_num; + unsigned long me_client_index; struct mei_cl wd_cl; enum mei_wd_states wd_state; From e2b31644e999e8bfe3efce880fb32840299abf41 Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Mon, 2 Sep 2013 13:29:46 +0300 Subject: [PATCH 295/523] mei: bus: stop wait for read during cl state transition Bus layer omitted check for client state transition while waiting for read completion The client state transition may occur for example as result of firmware initiated reset Add mei_cl_is_transitioning wrapper to reduce the code repetition.: Cc: # 3.9+ Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/bus.c | 5 ++++- drivers/misc/mei/client.h | 6 ++++++ drivers/misc/mei/main.c | 11 ++++------- 3 files changed, 14 insertions(+), 8 deletions(-) diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c index 6d0282c08a06..cd2033cd7120 100644 --- a/drivers/misc/mei/bus.c +++ b/drivers/misc/mei/bus.c @@ -297,10 +297,13 @@ int __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length) if (cl->reading_state != MEI_READ_COMPLETE && !waitqueue_active(&cl->rx_wait)) { + mutex_unlock(&dev->device_lock); if (wait_event_interruptible(cl->rx_wait, - (MEI_READ_COMPLETE == cl->reading_state))) { + cl->reading_state == MEI_READ_COMPLETE || + mei_cl_is_transitioning(cl))) { + if (signal_pending(current)) return -EINTR; return -ERESTARTSYS; diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h index 9eb031e92070..892cc4207fa2 100644 --- a/drivers/misc/mei/client.h +++ b/drivers/misc/mei/client.h @@ -90,6 +90,12 @@ static inline bool mei_cl_is_connected(struct mei_cl *cl) cl->dev->dev_state == MEI_DEV_ENABLED && cl->state == MEI_FILE_CONNECTED); } +static inline bool mei_cl_is_transitioning(struct mei_cl *cl) +{ + return (MEI_FILE_INITIALIZING == cl->state || + MEI_FILE_DISCONNECTED == cl->state || + MEI_FILE_DISCONNECTING == cl->state); +} bool mei_cl_is_other_connecting(struct mei_cl *cl); int mei_cl_disconnect(struct mei_cl *cl); diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c index 173ff095be0d..cabeddd66c1f 100644 --- a/drivers/misc/mei/main.c +++ b/drivers/misc/mei/main.c @@ -249,19 +249,16 @@ static ssize_t mei_read(struct file *file, char __user *ubuf, mutex_unlock(&dev->device_lock); if (wait_event_interruptible(cl->rx_wait, - (MEI_READ_COMPLETE == cl->reading_state || - MEI_FILE_INITIALIZING == cl->state || - MEI_FILE_DISCONNECTED == cl->state || - MEI_FILE_DISCONNECTING == cl->state))) { + MEI_READ_COMPLETE == cl->reading_state || + mei_cl_is_transitioning(cl))) { + if (signal_pending(current)) return -EINTR; return -ERESTARTSYS; } mutex_lock(&dev->device_lock); - if (MEI_FILE_INITIALIZING == cl->state || - MEI_FILE_DISCONNECTED == cl->state || - MEI_FILE_DISCONNECTING == cl->state) { + if (mei_cl_is_transitioning(cl)) { rets = -EBUSY; goto out; } From 4a704575cc1afb3b848f096778fa9b8d7b3d5813 Mon Sep 17 00:00:00 2001 From: Alexander Usyskin Date: Mon, 2 Sep 2013 13:29:47 +0300 Subject: [PATCH 296/523] mei: cancel stall timers in mei_reset Unset init_clients_timer and amthif_stall_timers in mei_reset in order to cancel timer ticking and hence avoid recursive reset calls. Cc: # 3.9+ Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/amthif.c | 1 + drivers/misc/mei/init.c | 3 +++ 2 files changed, 4 insertions(+) diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c index d0fdc134068a..f6ff711aa5bb 100644 --- a/drivers/misc/mei/amthif.c +++ b/drivers/misc/mei/amthif.c @@ -57,6 +57,7 @@ void mei_amthif_reset_params(struct mei_device *dev) dev->iamthif_ioctl = false; dev->iamthif_state = MEI_IAMTHIF_IDLE; dev->iamthif_timer = 0; + dev->iamthif_stall_timer = 0; } /** diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index 92c73118b13c..6197018e2f16 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -175,6 +175,9 @@ void mei_reset(struct mei_device *dev, int interrupts_enabled) memset(&dev->wr_ext_msg, 0, sizeof(dev->wr_ext_msg)); } + /* we're already in reset, cancel the init timer */ + dev->init_clients_timer = 0; + dev->me_clients_num = 0; dev->rd_msg_hdr = 0; dev->wd_pending = false; From 3a4916050ba2e0f1d114ef540abdf02b2b173e61 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Fri, 6 Sep 2013 11:49:56 -0700 Subject: [PATCH 297/523] Drivers: hv: util: Correctly support ws2008R2 and earlier The current code does not correctly negotiate the version numbers for the util driver when hosted on earlier hosts. The version numbers presented by this driver were not compatible with the version numbers supported by Windows Server 2008. Fix this problem. I would like to thank Olaf Hering (ohering@suse.com) for identifying the problem. Reported-by: Olaf Hering Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- drivers/hv/hv_kvp.c | 38 ++++++++++++++------- drivers/hv/hv_snapshot.c | 6 ++-- drivers/hv/hv_util.c | 71 ++++++++++++++++++++++++++++++---------- include/linux/hyperv.h | 7 ++-- 4 files changed, 88 insertions(+), 34 deletions(-) diff --git a/drivers/hv/hv_kvp.c b/drivers/hv/hv_kvp.c index 28b03325b872..09988b289622 100644 --- a/drivers/hv/hv_kvp.c +++ b/drivers/hv/hv_kvp.c @@ -32,13 +32,17 @@ /* * Pre win8 version numbers used in ws2008 and ws 2008 r2 (win7) */ +#define WS2008_SRV_MAJOR 1 +#define WS2008_SRV_MINOR 0 +#define WS2008_SRV_VERSION (WS2008_SRV_MAJOR << 16 | WS2008_SRV_MINOR) + #define WIN7_SRV_MAJOR 3 #define WIN7_SRV_MINOR 0 -#define WIN7_SRV_MAJOR_MINOR (WIN7_SRV_MAJOR << 16 | WIN7_SRV_MINOR) +#define WIN7_SRV_VERSION (WIN7_SRV_MAJOR << 16 | WIN7_SRV_MINOR) #define WIN8_SRV_MAJOR 4 #define WIN8_SRV_MINOR 0 -#define WIN8_SRV_MAJOR_MINOR (WIN8_SRV_MAJOR << 16 | WIN8_SRV_MINOR) +#define WIN8_SRV_VERSION (WIN8_SRV_MAJOR << 16 | WIN8_SRV_MINOR) /* * Global state maintained for transaction that is being processed. @@ -587,6 +591,8 @@ void hv_kvp_onchannelcallback(void *context) struct icmsg_hdr *icmsghdrp; struct icmsg_negotiate *negop = NULL; + int util_fw_version; + int kvp_srv_version; if (kvp_transaction.active) { /* @@ -606,17 +612,26 @@ void hv_kvp_onchannelcallback(void *context) if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) { /* - * We start with win8 version and if the host cannot - * support that we use the previous version. + * Based on the host, select appropriate + * framework and service versions we will + * negotiate. */ - if (vmbus_prep_negotiate_resp(icmsghdrp, negop, - recv_buffer, UTIL_FW_MAJOR_MINOR, - WIN8_SRV_MAJOR_MINOR)) - goto done; - + switch (vmbus_proto_version) { + case (VERSION_WS2008): + util_fw_version = UTIL_WS2K8_FW_VERSION; + kvp_srv_version = WS2008_SRV_VERSION; + break; + case (VERSION_WIN7): + util_fw_version = UTIL_FW_VERSION; + kvp_srv_version = WIN7_SRV_VERSION; + break; + default: + util_fw_version = UTIL_FW_VERSION; + kvp_srv_version = WIN8_SRV_VERSION; + } vmbus_prep_negotiate_resp(icmsghdrp, negop, - recv_buffer, UTIL_FW_MAJOR_MINOR, - WIN7_SRV_MAJOR_MINOR); + recv_buffer, util_fw_version, + kvp_srv_version); } else { kvp_msg = (struct hv_kvp_msg *)&recv_buffer[ @@ -649,7 +664,6 @@ void hv_kvp_onchannelcallback(void *context) return; } -done: icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION | ICMSGHDRFLAG_RESPONSE; diff --git a/drivers/hv/hv_snapshot.c b/drivers/hv/hv_snapshot.c index e4572f3f2834..0c3546224376 100644 --- a/drivers/hv/hv_snapshot.c +++ b/drivers/hv/hv_snapshot.c @@ -26,7 +26,7 @@ #define VSS_MAJOR 5 #define VSS_MINOR 0 -#define VSS_MAJOR_MINOR (VSS_MAJOR << 16 | VSS_MINOR) +#define VSS_VERSION (VSS_MAJOR << 16 | VSS_MINOR) @@ -190,8 +190,8 @@ void hv_vss_onchannelcallback(void *context) if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) { vmbus_prep_negotiate_resp(icmsghdrp, negop, - recv_buffer, UTIL_FW_MAJOR_MINOR, - VSS_MAJOR_MINOR); + recv_buffer, UTIL_FW_VERSION, + VSS_VERSION); } else { vss_msg = (struct hv_vss_msg *)&recv_buffer[ sizeof(struct vmbuspipe_hdr) + diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c index cb82233541b1..273e3ddb3a20 100644 --- a/drivers/hv/hv_util.c +++ b/drivers/hv/hv_util.c @@ -28,17 +28,32 @@ #include #include -#define SHUTDOWN_MAJOR 3 -#define SHUTDOWN_MINOR 0 -#define SHUTDOWN_MAJOR_MINOR (SHUTDOWN_MAJOR << 16 | SHUTDOWN_MINOR) -#define TIMESYNCH_MAJOR 3 -#define TIMESYNCH_MINOR 0 -#define TIMESYNCH_MAJOR_MINOR (TIMESYNCH_MAJOR << 16 | TIMESYNCH_MINOR) +#define SD_MAJOR 3 +#define SD_MINOR 0 +#define SD_VERSION (SD_MAJOR << 16 | SD_MINOR) -#define HEARTBEAT_MAJOR 3 -#define HEARTBEAT_MINOR 0 -#define HEARTBEAT_MAJOR_MINOR (HEARTBEAT_MAJOR << 16 | HEARTBEAT_MINOR) +#define SD_WS2008_MAJOR 1 +#define SD_WS2008_VERSION (SD_WS2008_MAJOR << 16 | SD_MINOR) + +#define TS_MAJOR 3 +#define TS_MINOR 0 +#define TS_VERSION (TS_MAJOR << 16 | TS_MINOR) + +#define TS_WS2008_MAJOR 1 +#define TS_WS2008_VERSION (TS_WS2008_MAJOR << 16 | TS_MINOR) + +#define HB_MAJOR 3 +#define HB_MINOR 0 +#define HB_VERSION (HB_MAJOR << 16 | HB_MINOR) + +#define HB_WS2008_MAJOR 1 +#define HB_WS2008_VERSION (HB_WS2008_MAJOR << 16 | HB_MINOR) + +static int sd_srv_version; +static int ts_srv_version; +static int hb_srv_version; +static int util_fw_version; static void shutdown_onchannelcallback(void *context); static struct hv_util_service util_shutdown = { @@ -99,8 +114,8 @@ static void shutdown_onchannelcallback(void *context) if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) { vmbus_prep_negotiate_resp(icmsghdrp, negop, - shut_txf_buf, UTIL_FW_MAJOR_MINOR, - SHUTDOWN_MAJOR_MINOR); + shut_txf_buf, util_fw_version, + sd_srv_version); } else { shutdown_msg = (struct shutdown_msg_data *)&shut_txf_buf[ @@ -216,6 +231,7 @@ static void timesync_onchannelcallback(void *context) struct icmsg_hdr *icmsghdrp; struct ictimesync_data *timedatap; u8 *time_txf_buf = util_timesynch.recv_buffer; + struct icmsg_negotiate *negop = NULL; vmbus_recvpacket(channel, time_txf_buf, PAGE_SIZE, &recvlen, &requestid); @@ -225,9 +241,10 @@ static void timesync_onchannelcallback(void *context) sizeof(struct vmbuspipe_hdr)]; if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) { - vmbus_prep_negotiate_resp(icmsghdrp, NULL, time_txf_buf, - UTIL_FW_MAJOR_MINOR, - TIMESYNCH_MAJOR_MINOR); + vmbus_prep_negotiate_resp(icmsghdrp, negop, + time_txf_buf, + util_fw_version, + ts_srv_version); } else { timedatap = (struct ictimesync_data *)&time_txf_buf[ sizeof(struct vmbuspipe_hdr) + @@ -257,6 +274,7 @@ static void heartbeat_onchannelcallback(void *context) struct icmsg_hdr *icmsghdrp; struct heartbeat_msg_data *heartbeat_msg; u8 *hbeat_txf_buf = util_heartbeat.recv_buffer; + struct icmsg_negotiate *negop = NULL; vmbus_recvpacket(channel, hbeat_txf_buf, PAGE_SIZE, &recvlen, &requestid); @@ -266,9 +284,9 @@ static void heartbeat_onchannelcallback(void *context) sizeof(struct vmbuspipe_hdr)]; if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) { - vmbus_prep_negotiate_resp(icmsghdrp, NULL, - hbeat_txf_buf, UTIL_FW_MAJOR_MINOR, - HEARTBEAT_MAJOR_MINOR); + vmbus_prep_negotiate_resp(icmsghdrp, negop, + hbeat_txf_buf, util_fw_version, + hb_srv_version); } else { heartbeat_msg = (struct heartbeat_msg_data *)&hbeat_txf_buf[ @@ -321,6 +339,25 @@ static int util_probe(struct hv_device *dev, goto error; hv_set_drvdata(dev, srv); + /* + * Based on the host; initialize the framework and + * service version numbers we will negotiate. + */ + switch (vmbus_proto_version) { + case (VERSION_WS2008): + util_fw_version = UTIL_WS2K8_FW_VERSION; + sd_srv_version = SD_WS2008_VERSION; + ts_srv_version = TS_WS2008_VERSION; + hb_srv_version = HB_WS2008_VERSION; + break; + + default: + util_fw_version = UTIL_FW_VERSION; + sd_srv_version = SD_VERSION; + ts_srv_version = TS_VERSION; + hb_srv_version = HB_VERSION; + } + return 0; error: diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index a3b8b2e2d244..d98503bde7e9 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -30,10 +30,13 @@ /* * Framework version for util services. */ +#define UTIL_FW_MINOR 0 + +#define UTIL_WS2K8_FW_MAJOR 1 +#define UTIL_WS2K8_FW_VERSION (UTIL_WS2K8_FW_MAJOR << 16 | UTIL_FW_MINOR) #define UTIL_FW_MAJOR 3 -#define UTIL_FW_MINOR 0 -#define UTIL_FW_MAJOR_MINOR (UTIL_FW_MAJOR << 16 | UTIL_FW_MINOR) +#define UTIL_FW_VERSION (UTIL_FW_MAJOR << 16 | UTIL_FW_MINOR) /* From 8bbf9f440f196ee08cc5ab1c19e62b1c5a736ff0 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Wed, 4 Sep 2013 15:41:58 -0700 Subject: [PATCH 298/523] Drivers: hv: vmbus: Terminate vmbus version negotiation on timeout commit 666b9adc801ef012612c4e43e0f44b2cdc1979cf terminated vmbus version negotiation incorrectly. We need to terminate the version negotiation only if the current negotiation were to timeout. Signed-off-by: K. Y. Srinivasan Cc: Olaf Hering Signed-off-by: Greg Kroah-Hartman --- drivers/hv/connection.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index 8f4743ab5fb2..936093e0271e 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -195,7 +195,7 @@ int vmbus_connect(void) do { ret = vmbus_negotiate_version(msginfo, version); - if (ret) + if (ret == -ETIMEDOUT) goto cleanup; if (vmbus_connection.conn_state == CONNECTED) From 667b4102b3e63856ca7770521ee74b1c44629df1 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 23 Sep 2013 14:41:17 -0700 Subject: [PATCH 299/523] sysfs: Allow mounting without CONFIG_NET In kobj_ns_current_may_mount the default should be to allow the mount. The test is only for a single kobj_ns_type at a time, and unless there is a reason to prevent it the mounting sysfs should be allowed. Subsystems that are not registered can't have are not involved so can't have a reason to prevent mounting sysfs. This is a bug-fix to: commit 7dc5dbc879bd0779924b5132a48b731a0bc04a1e Author: Eric W. Biederman Date: Mon Mar 25 20:07:01 2013 -0700 sysfs: Restrict mounting sysfs Don't allow mounting sysfs unless the caller has CAP_SYS_ADMIN rights over the net namespace. The principle here is if you create or have capabilities over it you can mount it, otherwise you get to live with what other people have mounted. Instead of testing this with a straight forward ns_capable call, perform this check the long and torturous way with kobject helpers, this keeps direct knowledge of namespaces out of sysfs, and preserves the existing sysfs abstractions. Acked-by: Greg Kroah-Hartman Signed-off-by: "Eric W. Biederman" That came in via the userns tree during the 3.12 merge window. Reported-by: James Hogan Signed-off-by: "Eric W. Biederman" Signed-off-by: Greg Kroah-Hartman --- lib/kobject.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/lib/kobject.c b/lib/kobject.c index 962175134702..669bf190d4fb 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -933,10 +933,7 @@ const struct kobj_ns_type_operations *kobj_ns_ops(struct kobject *kobj) bool kobj_ns_current_may_mount(enum kobj_ns_type type) { - bool may_mount = false; - - if (type == KOBJ_NS_TYPE_NONE) - return true; + bool may_mount = true; spin_lock(&kobj_ns_type_lock); if ((type > KOBJ_NS_TYPE_NONE) && (type < KOBJ_NS_TYPES) && From f123db8e9d6c84c863cb3c44d17e61995dc984fb Mon Sep 17 00:00:00 2001 From: Benson Leung Date: Tue, 24 Sep 2013 20:05:11 -0700 Subject: [PATCH 300/523] driver core : Fix use after free of dev->parent in device_shutdown The put_device(dev) at the bottom of the loop of device_shutdown may result in the dev being cleaned up. In device_create_release, the dev is kfreed. However, device_shutdown attempts to use the dev pointer again after put_device by referring to dev->parent. Copy the parent pointer instead to avoid this condition. This bug was found on Chromium OS's chromeos-3.8, which is based on v3.8.11. See bug report : https://code.google.com/p/chromium/issues/detail?id=297842 This can easily be reproduced when shutting down with hidraw devices that report battery condition. Two examples are the HP Bluetooth Mouse X4000b and the Apple Magic Mouse. For example, with the magic mouse : The dev in question is "hidraw0" dev->parent is "magicmouse" In the course of the shutdown for this device, the input event cleanup calls a put on hidraw0, decrementing its reference count. When we finally get to put_device(dev) in device_shutdown, kobject_cleanup is called and device_create_release does kfree(dev). dev->parent is no longer valid, and we may crash in put_device(dev->parent). This change should be applied on any kernel with this change : d1c6c030fcec6f860d9bb6c632a3ebe62e28440b Cc: stable@vger.kernel.org Signed-off-by: Benson Leung Reviewed-by: Ming Lei Signed-off-by: Greg Kroah-Hartman --- drivers/base/core.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/base/core.c b/drivers/base/core.c index c7cfadcf6752..34abf4d8a45f 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -2017,7 +2017,7 @@ EXPORT_SYMBOL_GPL(device_move); */ void device_shutdown(void) { - struct device *dev; + struct device *dev, *parent; spin_lock(&devices_kset->list_lock); /* @@ -2034,7 +2034,7 @@ void device_shutdown(void) * prevent it from being freed because parent's * lock is to be held */ - get_device(dev->parent); + parent = get_device(dev->parent); get_device(dev); /* * Make sure the device is off the kset list, in the @@ -2044,8 +2044,8 @@ void device_shutdown(void) spin_unlock(&devices_kset->list_lock); /* hold lock to avoid race with probe/release */ - if (dev->parent) - device_lock(dev->parent); + if (parent) + device_lock(parent); device_lock(dev); /* Don't allow any more runtime suspends */ @@ -2063,11 +2063,11 @@ void device_shutdown(void) } device_unlock(dev); - if (dev->parent) - device_unlock(dev->parent); + if (parent) + device_unlock(parent); put_device(dev); - put_device(dev->parent); + put_device(parent); spin_lock(&devices_kset->list_lock); } From 2606b28aabd7dea1766c23a105e1124c95409c96 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 20 Sep 2013 17:14:21 +0100 Subject: [PATCH 301/523] USB: Fix breakage in ffs_fs_mount() There's a bunch of failure exits in ffs_fs_mount() with seriously broken recovery logics. Most of that appears to stem from misunderstanding of the ->kill_sb() semantics; unlike ->put_super() it is called for *all* superblocks of given type, no matter how (in)complete the setup had been. ->put_super() is called only if ->s_root is not NULL; any failure prior to setting ->s_root will have the call of ->put_super() skipped. ->kill_sb(), OTOH, awaits every superblock that has come from sget(). Current behaviour of ffs_fs_mount(): We have struct ffs_sb_fill_data data on stack there. We do ffs_dev = functionfs_acquire_dev_callback(dev_name); and store that in data.private_data. Then we call mount_nodev(), passing it ffs_sb_fill() as a callback. That will either fail outright, or manage to call ffs_sb_fill(). There we allocate an instance of struct ffs_data, slap the value of ffs_dev (picked from data.private_data) into ffs->private_data and overwrite data.private_data by storing ffs into an overlapping member (data.ffs_data). Then we store ffs into sb->s_fs_info and attempt to set the rest of the things up (root inode, root dentry, then create /ep0 there). Any of those might fail. Should that happen, we get ffs_fs_kill_sb() called before mount_nodev() returns. If mount_nodev() fails for any reason whatsoever, we proceed to functionfs_release_dev_callback(data.ffs_data); That's broken in a lot of ways. Suppose the thing has failed in allocation of e.g. root inode or dentry. We have functionfs_release_dev_callback(ffs); ffs_data_put(ffs); done by ffs_fs_kill_sb() (ffs accessed via sb->s_fs_info), followed by functionfs_release_dev_callback(ffs); from ffs_fs_mount() (via data.ffs_data). Note that the second functionfs_release_dev_callback() has every chance to be done to freed memory. Suppose we fail *before* root inode allocation. What happens then? ffs_fs_kill_sb() doesn't do anything to ffs (it's either not called at all, or it doesn't have a pointer to ffs stored in sb->s_fs_info). And functionfs_release_dev_callback(data.ffs_data); is called by ffs_fs_mount(), but here we are in nasal daemon country - we are reading from a member of union we'd never stored into. In practice, we'll get what we used to store into the overlapping field, i.e. ffs_dev. And then we get screwed, since we treat it (struct gfs_ffs_obj * in disguise, returned by functionfs_acquire_dev_callback()) as struct ffs_data *, pick what would've been ffs_data ->private_data from it (*well* past the actual end of the struct gfs_ffs_obj - struct ffs_data is much bigger) and poke in whatever it points to. FWIW, there's a minor leak on top of all that in case if ffs_sb_fill() fails on kstrdup() - ffs is obviously forgotten. The thing is, there is no point in playing all those games with union. Just allocate and initialize ffs_data *before* calling mount_nodev() and pass a pointer to it via data.ffs_data. And once it's stored in sb->s_fs_info, clear data.ffs_data, so that ffs_fs_mount() knows that it doesn't need to kill the sucker manually - from that point on we'll have it done by ->kill_sb(). Signed-off-by: Al Viro Acked-by: Michal Nazarewicz Cc: stable # 3.3+ Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/f_fs.c | 60 +++++++++++++++++---------------------- 1 file changed, 26 insertions(+), 34 deletions(-) diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index 1a66c5baa0d1..0658908d8968 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -1034,37 +1034,19 @@ struct ffs_sb_fill_data { struct ffs_file_perms perms; umode_t root_mode; const char *dev_name; - union { - /* set by ffs_fs_mount(), read by ffs_sb_fill() */ - void *private_data; - /* set by ffs_sb_fill(), read by ffs_fs_mount */ - struct ffs_data *ffs_data; - }; + struct ffs_data *ffs_data; }; static int ffs_sb_fill(struct super_block *sb, void *_data, int silent) { struct ffs_sb_fill_data *data = _data; struct inode *inode; - struct ffs_data *ffs; + struct ffs_data *ffs = data->ffs_data; ENTER(); - /* Initialise data */ - ffs = ffs_data_new(); - if (unlikely(!ffs)) - goto Enomem; - ffs->sb = sb; - ffs->dev_name = kstrdup(data->dev_name, GFP_KERNEL); - if (unlikely(!ffs->dev_name)) - goto Enomem; - ffs->file_perms = data->perms; - ffs->private_data = data->private_data; - - /* used by the caller of this function */ - data->ffs_data = ffs; - + data->ffs_data = NULL; sb->s_fs_info = ffs; sb->s_blocksize = PAGE_CACHE_SIZE; sb->s_blocksize_bits = PAGE_CACHE_SHIFT; @@ -1080,17 +1062,14 @@ static int ffs_sb_fill(struct super_block *sb, void *_data, int silent) &data->perms); sb->s_root = d_make_root(inode); if (unlikely(!sb->s_root)) - goto Enomem; + return -ENOMEM; /* EP0 file */ if (unlikely(!ffs_sb_create_file(sb, "ep0", ffs, &ffs_ep0_operations, NULL))) - goto Enomem; + return -ENOMEM; return 0; - -Enomem: - return -ENOMEM; } static int ffs_fs_parse_opts(struct ffs_sb_fill_data *data, char *opts) @@ -1193,6 +1172,7 @@ ffs_fs_mount(struct file_system_type *t, int flags, struct dentry *rv; int ret; void *ffs_dev; + struct ffs_data *ffs; ENTER(); @@ -1200,18 +1180,30 @@ ffs_fs_mount(struct file_system_type *t, int flags, if (unlikely(ret < 0)) return ERR_PTR(ret); + ffs = ffs_data_new(); + if (unlikely(!ffs)) + return ERR_PTR(-ENOMEM); + ffs->file_perms = data.perms; + + ffs->dev_name = kstrdup(dev_name, GFP_KERNEL); + if (unlikely(!ffs->dev_name)) { + ffs_data_put(ffs); + return ERR_PTR(-ENOMEM); + } + ffs_dev = functionfs_acquire_dev_callback(dev_name); - if (IS_ERR(ffs_dev)) - return ffs_dev; + if (IS_ERR(ffs_dev)) { + ffs_data_put(ffs); + return ERR_CAST(ffs_dev); + } + ffs->private_data = ffs_dev; + data.ffs_data = ffs; - data.dev_name = dev_name; - data.private_data = ffs_dev; rv = mount_nodev(t, flags, &data, ffs_sb_fill); - - /* data.ffs_data is set by ffs_sb_fill */ - if (IS_ERR(rv)) + if (IS_ERR(rv) && data.ffs_data) { functionfs_release_dev_callback(data.ffs_data); - + ffs_data_put(data.ffs_data); + } return rv; } From eee41b49b80420e3e8c118d18dfacb7da43c1caa Mon Sep 17 00:00:00 2001 From: Shengzhou Liu Date: Mon, 2 Sep 2013 13:25:52 +0800 Subject: [PATCH 302/523] USB: fsl/ehci: fix failure of checking PHY_CLK_VALID during reinitialization In case of usb phy reinitialization: e.g. insmod usb-module(usb works well) -> rmmod usb-module -> insmod usb-module It found the PHY_CLK_VALID bit didn't work if it's not with the power-on reset. So we just check PHY_CLK_VALID bit during the stage with POR, this can be met by the tricky of checking FSL_SOC_USB_PRICTRL register. Signed-off-by: Shengzhou Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-fsl.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index d3166e693dcb..f2407b2e8a99 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -264,8 +264,9 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd, if (pdata->have_sysif_regs && pdata->controller_ver && (phy_mode == FSL_USB2_PHY_ULPI)) { /* check PHY_CLK_VALID to get phy clk valid */ - if (!spin_event_timeout(in_be32(non_ehci + FSL_SOC_USB_CTRL) & - PHY_CLK_VALID, FSL_USB_PHY_CLK_TIMEOUT, 0)) { + if (!(spin_event_timeout(in_be32(non_ehci + FSL_SOC_USB_CTRL) & + PHY_CLK_VALID, FSL_USB_PHY_CLK_TIMEOUT, 0) || + in_be32(non_ehci + FSL_SOC_USB_PRICTRL))) { printk(KERN_WARNING "fsl-ehci: USB PHY clock invalid\n"); return -EINVAL; } From 85601f8cf67c56a561a6dd5e130e65fdc179047d Mon Sep 17 00:00:00 2001 From: David Cohen Date: Thu, 26 Sep 2013 13:01:44 -0700 Subject: [PATCH 303/523] usb: dwc3: add support for Merrifield Add PCI id for Intel Merrifield Signed-off-by: David Cohen Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/dwc3-pci.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index 997ebe420bc9..2e252aae51ca 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -29,6 +29,7 @@ #define PCI_VENDOR_ID_SYNOPSYS 0x16c3 #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd #define PCI_DEVICE_ID_INTEL_BYT 0x0f37 +#define PCI_DEVICE_ID_INTEL_MRFLD 0x119e struct dwc3_pci { struct device *dev; @@ -189,6 +190,7 @@ static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = { PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3), }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), }, { } /* Terminating Entry */ }; MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table); From df3f4edc6ca6e7768376d05eb99536bcf92362f0 Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Thu, 26 Sep 2013 13:07:31 -0500 Subject: [PATCH 304/523] staging: r8188eu: Add new device ID The DLink DWA-125 Rev D1 also uses this driver. Signed-off-by: Larry Finger Reported-by: Sergey Kostanbaev Tested-by: Sergey Kostanbaev Cc: Sergey Kostanbaev Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rtl8188eu/os_dep/usb_intf.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/staging/rtl8188eu/os_dep/usb_intf.c b/drivers/staging/rtl8188eu/os_dep/usb_intf.c index d3078d200e50..9ca3180ebaa0 100644 --- a/drivers/staging/rtl8188eu/os_dep/usb_intf.c +++ b/drivers/staging/rtl8188eu/os_dep/usb_intf.c @@ -54,6 +54,7 @@ static struct usb_device_id rtw_usb_id_tbl[] = { /*=== Customer ID ===*/ /****** 8188EUS ********/ {USB_DEVICE(0x8179, 0x07B8)}, /* Abocom - Abocom */ + {USB_DEVICE(0x2001, 0x330F)}, /* DLink DWA-125 REV D1 */ {} /* Terminating entry */ }; From 5e9ae2e5da0beb93f8557fc92a8f4fbc05ea448f Mon Sep 17 00:00:00 2001 From: Benjamin LaHaise Date: Thu, 26 Sep 2013 20:34:51 -0400 Subject: [PATCH 305/523] aio: fix use-after-free in aio_migratepage Dmitry Vyukov managed to trigger a case where aio_migratepage can cause a use-after-free during teardown of the aio ring buffer's mapping. This turns out to be caused by access to the ioctx's ring_pages via the migratepage operation which was not being protected by any locks during ioctx freeing. Use the address_space's private_lock to protect use and updates of the mapping's private_data, and make ioctx teardown unlink the ioctx from the address space. Reported-by: Dmitry Vyukov Tested-by: Dmitry Vyukov Signed-off-by: Benjamin LaHaise --- fs/aio.c | 52 +++++++++++++++++++++++++++++++++++++--------------- 1 file changed, 37 insertions(+), 15 deletions(-) diff --git a/fs/aio.c b/fs/aio.c index 6b868f0e0c4c..067e3d340c35 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -167,10 +167,25 @@ static int __init aio_setup(void) } __initcall(aio_setup); +static void put_aio_ring_file(struct kioctx *ctx) +{ + struct file *aio_ring_file = ctx->aio_ring_file; + if (aio_ring_file) { + truncate_setsize(aio_ring_file->f_inode, 0); + + /* Prevent further access to the kioctx from migratepages */ + spin_lock(&aio_ring_file->f_inode->i_mapping->private_lock); + aio_ring_file->f_inode->i_mapping->private_data = NULL; + ctx->aio_ring_file = NULL; + spin_unlock(&aio_ring_file->f_inode->i_mapping->private_lock); + + fput(aio_ring_file); + } +} + static void aio_free_ring(struct kioctx *ctx) { int i; - struct file *aio_ring_file = ctx->aio_ring_file; for (i = 0; i < ctx->nr_pages; i++) { pr_debug("pid(%d) [%d] page->count=%d\n", current->pid, i, @@ -178,14 +193,10 @@ static void aio_free_ring(struct kioctx *ctx) put_page(ctx->ring_pages[i]); } + put_aio_ring_file(ctx); + if (ctx->ring_pages && ctx->ring_pages != ctx->internal_pages) kfree(ctx->ring_pages); - - if (aio_ring_file) { - truncate_setsize(aio_ring_file->f_inode, 0); - fput(aio_ring_file); - ctx->aio_ring_file = NULL; - } } static int aio_ring_mmap(struct file *file, struct vm_area_struct *vma) @@ -207,9 +218,8 @@ static int aio_set_page_dirty(struct page *page) static int aio_migratepage(struct address_space *mapping, struct page *new, struct page *old, enum migrate_mode mode) { - struct kioctx *ctx = mapping->private_data; + struct kioctx *ctx; unsigned long flags; - unsigned idx = old->index; int rc; /* Writeback must be complete */ @@ -224,10 +234,23 @@ static int aio_migratepage(struct address_space *mapping, struct page *new, get_page(new); - spin_lock_irqsave(&ctx->completion_lock, flags); - migrate_page_copy(new, old); - ctx->ring_pages[idx] = new; - spin_unlock_irqrestore(&ctx->completion_lock, flags); + /* We can potentially race against kioctx teardown here. Use the + * address_space's private data lock to protect the mapping's + * private_data. + */ + spin_lock(&mapping->private_lock); + ctx = mapping->private_data; + if (ctx) { + pgoff_t idx; + spin_lock_irqsave(&ctx->completion_lock, flags); + migrate_page_copy(new, old); + idx = old->index; + if (idx < (pgoff_t)ctx->nr_pages) + ctx->ring_pages[idx] = new; + spin_unlock_irqrestore(&ctx->completion_lock, flags); + } else + rc = -EBUSY; + spin_unlock(&mapping->private_lock); return rc; } @@ -617,8 +640,7 @@ out_freepcpu: out_freeref: free_percpu(ctx->users.pcpu_count); out_freectx: - if (ctx->aio_ring_file) - fput(ctx->aio_ring_file); + put_aio_ring_file(ctx); kmem_cache_free(kioctx_cachep, ctx); pr_debug("error allocating ioctx %d\n", err); return ERR_PTR(err); From accd1e823ed1d5980106dd522a4c535084400830 Mon Sep 17 00:00:00 2001 From: Suravee Suthikulpanit Date: Wed, 29 Sep 2010 19:27:12 -0500 Subject: [PATCH 306/523] x86/microcode/AMD: Fix patch level reporting for family 15h On AMD family 14h, applying microcode patch on the a core (core0) would also affect the other core (core1) in the same compute unit. The driver would skip applying the patch on core1, but it still need to update kernel structures to reflect the proper patch level. The current logic is not updating the struct ucode_cpu_info.cpu_sig.rev of the skipped core. This causes the /sys/devices/system/cpu/cpu1/microcode/version to report incorrect patch level as shown below: $ grep . cpu?/microcode/version cpu0/microcode/version:0x600063d cpu1/microcode/version:0x6000626 cpu2/microcode/version:0x600063d cpu3/microcode/version:0x6000626 cpu4/microcode/version:0x600063d Signed-off-by: Suravee Suthikulpanit Acked-by: Borislav Petkov Cc: Cc: Cc: Link: http://lkml.kernel.org/r/1285806432-1995-1-git-send-email-suravee.suthikulpanit@amd.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/microcode_amd.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c index 7123b5df479d..af99f71aeb7f 100644 --- a/arch/x86/kernel/microcode_amd.c +++ b/arch/x86/kernel/microcode_amd.c @@ -216,6 +216,7 @@ int apply_microcode_amd(int cpu) /* need to apply patch? */ if (rev >= mc_amd->hdr.patch_id) { c->microcode = rev; + uci->cpu_sig.rev = rev; return 0; } From b5bf0a929d7ca35b9ccfc24647a397899d307659 Mon Sep 17 00:00:00 2001 From: Ben Whitten Date: Fri, 27 Sep 2013 10:13:51 +0200 Subject: [PATCH 307/523] ALSA: hda - Add fixup for MacBook Air 6,1 and 6,2 with CS4208 codec This patch adds the default pin configuration and some init verbs for setting COEFs, in addition to the correction of input pin AMP caps for MacBook Air 6,1 and 6,2. With these changes, the headphone jack detection starts working properly. [trivial space fixes by tiwai] Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=60811 Signed-off-by: Ben Whitten Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_cirrus.c | 72 +++++++++++++++++++++++++++++++++--- 1 file changed, 67 insertions(+), 5 deletions(-) diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c index b524f89a1f13..18d972501585 100644 --- a/sound/pci/hda/patch_cirrus.c +++ b/sound/pci/hda/patch_cirrus.c @@ -111,6 +111,9 @@ enum { /* 0x0009 - 0x0014 -> 12 test regs */ /* 0x0015 - visibility reg */ +/* Cirrus Logic CS4208 */ +#define CS4208_VENDOR_NID 0x24 + /* * Cirrus Logic CS4210 * @@ -223,6 +226,16 @@ static const struct hda_verb cs_coef_init_verbs[] = { {} /* terminator */ }; +static const struct hda_verb cs4208_coef_init_verbs[] = { + {0x01, AC_VERB_SET_POWER_STATE, 0x00}, /* AFG: D0 */ + {0x24, AC_VERB_SET_PROC_STATE, 0x01}, /* VPW: processing on */ + {0x24, AC_VERB_SET_COEF_INDEX, 0x0033}, + {0x24, AC_VERB_SET_PROC_COEF, 0x0001}, /* A1 ICS */ + {0x24, AC_VERB_SET_COEF_INDEX, 0x0034}, + {0x24, AC_VERB_SET_PROC_COEF, 0x1C01}, /* A1 Enable, A Thresh = 300mV */ + {} /* terminator */ +}; + /* Errata: CS4207 rev C0/C1/C2 Silicon * * http://www.cirrus.com/en/pubs/errata/ER880C3.pdf @@ -295,6 +308,8 @@ static int cs_init(struct hda_codec *codec) /* init_verb sequence for C0/C1/C2 errata*/ snd_hda_sequence_write(codec, cs_errata_init_verbs); snd_hda_sequence_write(codec, cs_coef_init_verbs); + } else if (spec->vendor_nid == CS4208_VENDOR_NID) { + snd_hda_sequence_write(codec, cs4208_coef_init_verbs); } snd_hda_gen_init(codec); @@ -434,6 +449,29 @@ static const struct hda_pintbl mba42_pincfgs[] = { {} /* terminator */ }; +static const struct hda_pintbl mba6_pincfgs[] = { + { 0x10, 0x032120f0 }, /* HP */ + { 0x11, 0x500000f0 }, + { 0x12, 0x90100010 }, /* Speaker */ + { 0x13, 0x500000f0 }, + { 0x14, 0x500000f0 }, + { 0x15, 0x770000f0 }, + { 0x16, 0x770000f0 }, + { 0x17, 0x430000f0 }, + { 0x18, 0x43ab9030 }, /* Mic */ + { 0x19, 0x770000f0 }, + { 0x1a, 0x770000f0 }, + { 0x1b, 0x770000f0 }, + { 0x1c, 0x90a00090 }, + { 0x1d, 0x500000f0 }, + { 0x1e, 0x500000f0 }, + { 0x1f, 0x500000f0 }, + { 0x20, 0x500000f0 }, + { 0x21, 0x430000f0 }, + { 0x22, 0x430000f0 }, + {} /* terminator */ +}; + static void cs420x_fixup_gpio_13(struct hda_codec *codec, const struct hda_fixup *fix, int action) { @@ -556,22 +594,23 @@ static int patch_cs420x(struct hda_codec *codec) /* * CS4208 support: - * Its layout is no longer compatible with CS4206/CS4207, and the generic - * parser seems working fairly well, except for trivial fixups. + * Its layout is no longer compatible with CS4206/CS4207 */ enum { + CS4208_MBA6, CS4208_GPIO0, }; static const struct hda_model_fixup cs4208_models[] = { { .id = CS4208_GPIO0, .name = "gpio0" }, + { .id = CS4208_MBA6, .name = "mba6" }, {} }; static const struct snd_pci_quirk cs4208_fixup_tbl[] = { /* codec SSID */ - SND_PCI_QUIRK(0x106b, 0x7100, "MacBookPro 6,1", CS4208_GPIO0), - SND_PCI_QUIRK(0x106b, 0x7200, "MacBookPro 6,2", CS4208_GPIO0), + SND_PCI_QUIRK(0x106b, 0x7100, "MacBookAir 6,1", CS4208_MBA6), + SND_PCI_QUIRK(0x106b, 0x7200, "MacBookAir 6,2", CS4208_MBA6), {} /* terminator */ }; @@ -588,18 +627,35 @@ static void cs4208_fixup_gpio0(struct hda_codec *codec, } static const struct hda_fixup cs4208_fixups[] = { + [CS4208_MBA6] = { + .type = HDA_FIXUP_PINS, + .v.pins = mba6_pincfgs, + .chained = true, + .chain_id = CS4208_GPIO0, + }, [CS4208_GPIO0] = { .type = HDA_FIXUP_FUNC, .v.func = cs4208_fixup_gpio0, }, }; +/* correct the 0dB offset of input pins */ +static void cs4208_fix_amp_caps(struct hda_codec *codec, hda_nid_t adc) +{ + unsigned int caps; + + caps = query_amp_caps(codec, adc, HDA_INPUT); + caps &= ~(AC_AMPCAP_OFFSET); + caps |= 0x02; + snd_hda_override_amp_caps(codec, adc, HDA_INPUT, caps); +} + static int patch_cs4208(struct hda_codec *codec) { struct cs_spec *spec; int err; - spec = cs_alloc_spec(codec, 0); /* no specific w/a */ + spec = cs_alloc_spec(codec, CS4208_VENDOR_NID); if (!spec) return -ENOMEM; @@ -609,6 +665,12 @@ static int patch_cs4208(struct hda_codec *codec) cs4208_fixups); snd_hda_apply_fixup(codec, HDA_FIXUP_ACT_PRE_PROBE); + snd_hda_override_wcaps(codec, 0x18, + get_wcaps(codec, 0x18) | AC_WCAP_STEREO); + cs4208_fix_amp_caps(codec, 0x18); + cs4208_fix_amp_caps(codec, 0x1b); + cs4208_fix_amp_caps(codec, 0x1c); + err = cs_parse_auto_config(codec); if (err < 0) goto error; From a0760527f51db86a13daff345fe4f206cc45e6bf Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 27 Sep 2013 10:19:31 +0200 Subject: [PATCH 308/523] ALSA: hda - Add documentation for CS4208 fixups Signed-off-by: Takashi Iwai --- Documentation/sound/alsa/HD-Audio-Models.txt | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/sound/alsa/HD-Audio-Models.txt b/Documentation/sound/alsa/HD-Audio-Models.txt index a46ddb85e83a..f911e3656209 100644 --- a/Documentation/sound/alsa/HD-Audio-Models.txt +++ b/Documentation/sound/alsa/HD-Audio-Models.txt @@ -296,6 +296,12 @@ Cirrus Logic CS4206/4207 imac27 IMac 27 Inch auto BIOS setup (default) +Cirrus Logic CS4208 +=================== + mba6 MacBook Air 6,1 and 6,2 + gpio0 Enable GPIO 0 amp + auto BIOS setup (default) + VIA VT17xx/VT18xx/VT20xx ======================== auto BIOS setup (default) From c11eb222fd7d4db91196121dbf854178505d2751 Mon Sep 17 00:00:00 2001 From: Mischa Jonker Date: Thu, 26 Sep 2013 15:44:56 +0200 Subject: [PATCH 309/523] ARC: Handle zero-overhead-loop in unaligned access handler If a load or store is the last instruction in a zero-overhead-loop, and it's misaligned, the loop would execute only once. This fixes that problem. Signed-off-by: Mischa Jonker Signed-off-by: Vineet Gupta --- arch/arc/kernel/unaligned.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arc/kernel/unaligned.c b/arch/arc/kernel/unaligned.c index 28d170060747..7ff5b5c183bb 100644 --- a/arch/arc/kernel/unaligned.c +++ b/arch/arc/kernel/unaligned.c @@ -245,6 +245,12 @@ int misaligned_fixup(unsigned long address, struct pt_regs *regs, regs->status32 &= ~STATUS_DE_MASK; } else { regs->ret += state.instr_len; + + /* handle zero-overhead-loop */ + if ((regs->ret == regs->lp_end) && (regs->lp_count)) { + regs->ret = regs->lp_start; + regs->lp_count--; + } } return 0; From 0752adfda15f0eca9859a76da3db1800e129ad43 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Thu, 26 Sep 2013 18:50:40 +0530 Subject: [PATCH 310/523] ARC: Fix 32-bit wrap around in access_ok() Anton reported | LTP tests syscalls/process_vm_readv01 and process_vm_writev01 fail | similarly in one testcase test_iov_invalid -> lvec->iov_base. | Testcase expects errno EFAULT and return code -1, | but it gets return code 1 and ERRNO is 0 what means success. Essentially test case was passing a pointer of -1 which access_ok() was not catching. It was doing [@addr + @sz <= TASK_SIZE] which would pass for @addr == -1 Fixed that by rewriting as [@addr <= TASK_SIZE - @sz] Reported-by: Anton Kolesov Signed-off-by: Vineet Gupta --- arch/arc/include/asm/uaccess.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arc/include/asm/uaccess.h b/arch/arc/include/asm/uaccess.h index 32420824375b..30c9baffa96f 100644 --- a/arch/arc/include/asm/uaccess.h +++ b/arch/arc/include/asm/uaccess.h @@ -43,7 +43,7 @@ * Because it essentially checks if buffer end is within limit and @len is * non-ngeative, which implies that buffer start will be within limit too. * - * The reason for rewriting being, for majorit yof cases, @len is generally + * The reason for rewriting being, for majority of cases, @len is generally * compile time constant, causing first sub-expression to be compile time * subsumed. * @@ -53,7 +53,7 @@ * */ #define __user_ok(addr, sz) (((sz) <= TASK_SIZE) && \ - (((addr)+(sz)) <= get_fs())) + ((addr) <= (get_fs() - (sz)))) #define __access_ok(addr, sz) (unlikely(__kernel_ok) || \ likely(__user_ok((addr), (sz)))) From 6c00350b573c0bd3635436e43e8696951dd6e1b6 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Wed, 25 Sep 2013 16:53:32 +0530 Subject: [PATCH 311/523] ARC: Workaround spinlock livelock in SMP SystemC simulation Some ARC SMP systems lack native atomic R-M-W (LLOCK/SCOND) insns and can only use atomic EX insn (reg with mem) to build higher level R-M-W primitives. This includes a SystemC based SMP simulation model. So rwlocks need to use a protecting spinlock for atomic cmp-n-exchange operation to update reader(s)/writer count. The spinlock operation itself looks as follows: mov reg, 1 ; 1=locked, 0=unlocked retry: EX reg, [lock] ; load existing, store 1, atomically BREQ reg, 1, rety ; if already locked, retry In single-threaded simulation, SystemC alternates between the 2 cores with "N" insn each based scheduling. Additionally for insn with global side effect, such as EX writing to shared mem, a core switch is enforced too. Given that, 2 cores doing a repeated EX on same location, Linux often got into a livelock e.g. when both cores were fiddling with tasklist lock (gdbserver / hackbench) for read/write respectively as the sequence diagram below shows: core1 core2 -------- -------- 1. spin lock [EX r=0, w=1] - LOCKED 2. rwlock(Read) - LOCKED 3. spin unlock [ST 0] - UNLOCKED spin lock [EX r=0,w=1] - LOCKED -- resched core 1---- 5. spin lock [EX r=1] - ALREADY-LOCKED -- resched core 2---- 6. rwlock(Write) - READER-LOCKED 7. spin unlock [ST 0] 8. rwlock failed, retry again 9. spin lock [EX r=0, w=1] -- resched core 1---- 10 spinlock locked in #9, retry #5 11. spin lock [EX gets 1] -- resched core 2---- ... ... The fix was to unlock using the EX insn too (step 7), to trigger another SystemC scheduling pass which would let core1 proceed, eliding the livelock. Signed-off-by: Vineet Gupta --- arch/arc/include/asm/spinlock.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/arc/include/asm/spinlock.h b/arch/arc/include/asm/spinlock.h index f158197ac5b0..b6a8c2dfbe6e 100644 --- a/arch/arc/include/asm/spinlock.h +++ b/arch/arc/include/asm/spinlock.h @@ -45,7 +45,14 @@ static inline int arch_spin_trylock(arch_spinlock_t *lock) static inline void arch_spin_unlock(arch_spinlock_t *lock) { - lock->slock = __ARCH_SPIN_LOCK_UNLOCKED__; + unsigned int tmp = __ARCH_SPIN_LOCK_UNLOCKED__; + + __asm__ __volatile__( + " ex %0, [%1] \n" + : "+r" (tmp) + : "r"(&(lock->slock)) + : "memory"); + smp_mb(); } From 55c2e26204276b27f2b7a63123b701c950e45d89 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Tue, 24 Sep 2013 23:05:37 +0200 Subject: [PATCH 312/523] ARC: Use clockevents_config_and_register over clockevents_register_device MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit clockevents_config_and_register is more clever and correct than doing it by hand; so use it. [vgupta: fixed build failure due to missing ; in patch] Signed-off-by: Uwe Kleine-König Signed-off-by: Vineet Gupta --- arch/arc/kernel/time.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/arch/arc/kernel/time.c b/arch/arc/kernel/time.c index 0e51e69cf30d..3fde7de3ea67 100644 --- a/arch/arc/kernel/time.c +++ b/arch/arc/kernel/time.c @@ -227,12 +227,9 @@ void __attribute__((weak)) arc_local_timer_setup(unsigned int cpu) { struct clock_event_device *clk = &per_cpu(arc_clockevent_device, cpu); - clockevents_calc_mult_shift(clk, arc_get_core_freq(), 5); - - clk->max_delta_ns = clockevent_delta2ns(ARC_TIMER_MAX, clk); clk->cpumask = cpumask_of(cpu); - - clockevents_register_device(clk); + clockevents_config_and_register(clk, arc_get_core_freq(), + 0, ARC_TIMER_MAX); /* * setup the per-cpu timer IRQ handler - for all cpus From 5aa3a44918db13257ade0bb1caf662f7815de357 Mon Sep 17 00:00:00 2001 From: Todd Fujinaka Date: Tue, 17 Sep 2013 05:08:48 +0000 Subject: [PATCH 313/523] igb: Fix ethtool loopback test for 82580 copper Add back 82580 loopback tests to ethtool. Signed-off-by: Todd Fujinaka Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/igb/igb_ethtool.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c b/drivers/net/ethernet/intel/igb/igb_ethtool.c index 48cbc833b051..86d51429a189 100644 --- a/drivers/net/ethernet/intel/igb/igb_ethtool.c +++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c @@ -1607,6 +1607,9 @@ static int igb_integrated_phy_loopback(struct igb_adapter *adapter) igb_write_phy_reg(hw, I347AT4_PAGE_SELECT, 0); igb_write_phy_reg(hw, PHY_CONTROL, 0x4140); } + } else if (hw->phy.type == e1000_phy_82580) { + /* enable MII loopback */ + igb_write_phy_reg(hw, I82580_PHY_LBK_CTRL, 0x8041); } /* add small delay to avoid loopback test failure */ From 93bc73b8273e40d8202764a1096ce59c5f7f7c0c Mon Sep 17 00:00:00 2001 From: Jesse Brandeburg Date: Fri, 13 Sep 2013 08:23:18 +0000 Subject: [PATCH 314/523] i40e: use common failure flow As mentioned by Joe Perches, we should be using foo = alloc(...) if (!foo) return -ENOMEM; return 0; Signed-off-by: Jesse Brandeburg CC: Joe Perches Tested-by: Kavindya Deegala Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_main.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 601d482694ea..67f8fd538a8d 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -101,10 +101,10 @@ int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem, mem->size = ALIGN(size, alignment); mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size, &mem->pa, GFP_KERNEL); - if (mem->va) - return 0; + if (!mem->va) + return -ENOMEM; - return -ENOMEM; + return 0; } /** @@ -136,10 +136,10 @@ int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem, mem->size = size; mem->va = kzalloc(size, GFP_KERNEL); - if (mem->va) - return 0; + if (!mem->va) + return -ENOMEM; - return -ENOMEM; + return 0; } /** From ddf434acc0f60839ca20c0b851932b0b2a05993c Mon Sep 17 00:00:00 2001 From: Jesse Brandeburg Date: Fri, 13 Sep 2013 08:23:19 +0000 Subject: [PATCH 315/523] i40e: small clean ups from review As mentioned by Joe Perches clean up a loop flow. Signed-off-by: Jesse Brandeburg CC: Joe Perches Tested-by: Kavindya Deegala Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_main.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 67f8fd538a8d..865bc6be7287 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -174,8 +174,7 @@ static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile, u16 needed, u16 id) { int ret = -ENOMEM; - int i = 0; - int j = 0; + int i, j; if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) { dev_info(&pf->pdev->dev, @@ -186,7 +185,7 @@ static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile, /* start the linear search with an imperfect hint */ i = pile->search_hint; - while (i < pile->num_entries && ret < 0) { + while (i < pile->num_entries) { /* skip already allocated entries */ if (pile->list[i] & I40E_PILE_VALID_BIT) { i++; @@ -205,6 +204,7 @@ static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile, pile->list[i+j] = id | I40E_PILE_VALID_BIT; ret = i; pile->search_hint = i + j; + break; } else { /* not enough, so skip over it and continue looking */ i += j; From dcae29be4fba85cc9965511f5c112bd08892b1cb Mon Sep 17 00:00:00 2001 From: Jesse Brandeburg Date: Fri, 13 Sep 2013 08:23:20 +0000 Subject: [PATCH 316/523] i40e: convert ret to aq_ret When calling admin queue functions the driver should use aq_ret variable to help make clear that the return value is not a regular return variable. This allows for clean up of the return types that were previously converted to int. Signed-off-by: Jesse Brandeburg Tested-by: Kavindya Deegala Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_main.c | 107 ++++++++++---------- 1 file changed, 52 insertions(+), 55 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 865bc6be7287..60c71527f57c 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -1388,7 +1388,7 @@ int i40e_sync_vsi_filters(struct i40e_vsi *vsi) bool add_happened = false; int filter_list_len = 0; u32 changed_flags = 0; - i40e_status ret = 0; + i40e_status aq_ret = 0; struct i40e_pf *pf; int num_add = 0; int num_del = 0; @@ -1449,28 +1449,28 @@ int i40e_sync_vsi_filters(struct i40e_vsi *vsi) /* flush a full buffer */ if (num_del == filter_list_len) { - ret = i40e_aq_remove_macvlan(&pf->hw, + aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, del_list, num_del, NULL); num_del = 0; memset(del_list, 0, sizeof(*del_list)); - if (ret) + if (aq_ret) dev_info(&pf->pdev->dev, "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n", - ret, + aq_ret, pf->hw.aq.asq_last_status); } } if (num_del) { - ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, + aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, del_list, num_del, NULL); num_del = 0; - if (ret) + if (aq_ret) dev_info(&pf->pdev->dev, "ignoring delete macvlan error, err %d, aq_err %d\n", - ret, pf->hw.aq.asq_last_status); + aq_ret, pf->hw.aq.asq_last_status); } kfree(del_list); @@ -1515,32 +1515,30 @@ int i40e_sync_vsi_filters(struct i40e_vsi *vsi) /* flush a full buffer */ if (num_add == filter_list_len) { - ret = i40e_aq_add_macvlan(&pf->hw, - vsi->seid, - add_list, - num_add, - NULL); + aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid, + add_list, num_add, + NULL); num_add = 0; - if (ret) + if (aq_ret) break; memset(add_list, 0, sizeof(*add_list)); } } if (num_add) { - ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid, - add_list, num_add, NULL); + aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid, + add_list, num_add, NULL); num_add = 0; } kfree(add_list); add_list = NULL; - if (add_happened && (!ret)) { + if (add_happened && (!aq_ret)) { /* do nothing */; - } else if (add_happened && (ret)) { + } else if (add_happened && (aq_ret)) { dev_info(&pf->pdev->dev, "add filter failed, err %d, aq_err %d\n", - ret, pf->hw.aq.asq_last_status); + aq_ret, pf->hw.aq.asq_last_status); if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) && !test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state)) { @@ -1556,28 +1554,27 @@ int i40e_sync_vsi_filters(struct i40e_vsi *vsi) if (changed_flags & IFF_ALLMULTI) { bool cur_multipromisc; cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI); - ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw, - vsi->seid, - cur_multipromisc, - NULL); - if (ret) + aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw, + vsi->seid, + cur_multipromisc, + NULL); + if (aq_ret) dev_info(&pf->pdev->dev, "set multi promisc failed, err %d, aq_err %d\n", - ret, pf->hw.aq.asq_last_status); + aq_ret, pf->hw.aq.asq_last_status); } if ((changed_flags & IFF_PROMISC) || promisc_forced_on) { bool cur_promisc; cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) || test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state)); - ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw, - vsi->seid, - cur_promisc, - NULL); - if (ret) + aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw, + vsi->seid, + cur_promisc, NULL); + if (aq_ret) dev_info(&pf->pdev->dev, "set uni promisc failed, err %d, aq_err %d\n", - ret, pf->hw.aq.asq_last_status); + aq_ret, pf->hw.aq.asq_last_status); } clear_bit(__I40E_CONFIG_BUSY, &vsi->state); @@ -1936,10 +1933,10 @@ static void i40e_restore_vlan(struct i40e_vsi *vsi) * @vsi: the vsi being adjusted * @vid: the vlan id to set as a PVID **/ -i40e_status i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid) +int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid) { struct i40e_vsi_context ctxt; - i40e_status ret; + i40e_status aq_ret; vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID); vsi->info.pvid = cpu_to_le16(vid); @@ -1948,14 +1945,15 @@ i40e_status i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid) ctxt.seid = vsi->seid; memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info)); - ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL); - if (ret) { + aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL); + if (aq_ret) { dev_info(&vsi->back->pdev->dev, "%s: update vsi failed, aq_err=%d\n", __func__, vsi->back->hw.aq.asq_last_status); + return -ENOENT; } - return ret; + return 0; } /** @@ -3451,28 +3449,27 @@ static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi) struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0}; struct i40e_pf *pf = vsi->back; struct i40e_hw *hw = &pf->hw; + i40e_status aq_ret; u32 tc_bw_max; - int ret; int i; /* Get the VSI level BW configuration */ - ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL); - if (ret) { + aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL); + if (aq_ret) { dev_info(&pf->pdev->dev, "couldn't get pf vsi bw config, err %d, aq_err %d\n", - ret, pf->hw.aq.asq_last_status); - return ret; + aq_ret, pf->hw.aq.asq_last_status); + return -EINVAL; } /* Get the VSI level BW configuration per TC */ - ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, - &bw_ets_config, - NULL); - if (ret) { + aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config, + NULL); + if (aq_ret) { dev_info(&pf->pdev->dev, "couldn't get pf vsi ets bw config, err %d, aq_err %d\n", - ret, pf->hw.aq.asq_last_status); - return ret; + aq_ret, pf->hw.aq.asq_last_status); + return -EINVAL; } if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) { @@ -3494,7 +3491,7 @@ static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi) /* 3 bits out of 4 for each TC */ vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7); } - return ret; + return 0; } /** @@ -3505,30 +3502,30 @@ static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi) * * Returns 0 on success, negative value on failure **/ -static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, - u8 enabled_tc, +static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc, u8 *bw_share) { struct i40e_aqc_configure_vsi_tc_bw_data bw_data; - int i, ret = 0; + i40e_status aq_ret; + int i; bw_data.tc_valid_bits = enabled_tc; for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) bw_data.tc_bw_credits[i] = bw_share[i]; - ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, - &bw_data, NULL); - if (ret) { + aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data, + NULL); + if (aq_ret) { dev_info(&vsi->back->pdev->dev, "%s: AQ command Config VSI BW allocation per TC failed = %d\n", __func__, vsi->back->hw.aq.asq_last_status); - return ret; + return -EINVAL; } for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) vsi->info.qs_handle[i] = bw_data.qs_handles[i]; - return ret; + return 0; } /** From 068fd3a0811c0aace07ff9c3e1d17bbd1802f4b9 Mon Sep 17 00:00:00 2001 From: Kailang Yang Date: Fri, 27 Sep 2013 14:02:28 +0200 Subject: [PATCH 317/523] ALSA: hda - Fix Internal Mic boost can't control with ALC283 ALC283 pin control for Line1 default control by hidden register. Use line1 as internal Mic will not get sound when boost value up. Set control by verb for hidden register will solve this issue. Signed-off-by: Kailang Yang Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index bc07d369fac4..41f18f4b060b 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3439,6 +3439,9 @@ static void alc283_fixup_chromebook(struct hda_codec *codec, /* Set to manual mode */ val = alc_read_coef_idx(codec, 0x06); alc_write_coef_idx(codec, 0x06, val & ~0x000c); + /* Enable Line1 input control by verb */ + val = alc_read_coef_idx(codec, 0x1a); + alc_write_coef_idx(codec, 0x1a, val | (1 << 4)); break; } } From 1bb3e062d4006bda733e8a0023b83f90700f663f Mon Sep 17 00:00:00 2001 From: Kailang Yang Date: Fri, 27 Sep 2013 13:10:25 +0200 Subject: [PATCH 318/523] ALSA: hda - Enable internal mic on a Thinkpad machine with ALC283 More thorough testing showed that these verbs were necessary to improve quality of the internal mic. Patch originally from Realtek. BugLink: https://bugs.launchpad.net/bugs/1231931 Signed-off-by: David Henningsson Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 41f18f4b060b..0e303b99a47c 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3534,6 +3534,7 @@ enum { ALC269VB_FIXUP_ORDISSIMO_EVE2, ALC283_FIXUP_CHROME_BOOK, ALC282_FIXUP_ASUS_TX300, + ALC283_FIXUP_INT_MIC, }; static const struct hda_fixup alc269_fixups[] = { @@ -3793,6 +3794,16 @@ static const struct hda_fixup alc269_fixups[] = { .type = HDA_FIXUP_FUNC, .v.func = alc282_fixup_asus_tx300, }, + [ALC283_FIXUP_INT_MIC] = { + .type = HDA_FIXUP_VERBS, + .v.verbs = (const struct hda_verb[]) { + {0x20, AC_VERB_SET_COEF_INDEX, 0x1a}, + {0x20, AC_VERB_SET_PROC_COEF, 0x0011}, + { } + }, + .chained = true, + .chain_id = ALC269_FIXUP_LIMIT_INT_MIC_BOOST + }, }; static const struct snd_pci_quirk alc269_fixup_tbl[] = { @@ -3877,7 +3888,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x17aa, 0x2214, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST), SND_PCI_QUIRK(0x17aa, 0x2215, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST), SND_PCI_QUIRK(0x17aa, 0x5013, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST), - SND_PCI_QUIRK(0x17aa, 0x501a, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST), + SND_PCI_QUIRK(0x17aa, 0x501a, "Thinkpad", ALC283_FIXUP_INT_MIC), SND_PCI_QUIRK(0x17aa, 0x5026, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST), SND_PCI_QUIRK(0x17aa, 0x5109, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST), SND_PCI_QUIRK(0x17aa, 0x3bf8, "Quanta FL1", ALC269_FIXUP_PCM_44K), From 078b587648950e75a4a303e4afbb127d2dd323dc Mon Sep 17 00:00:00 2001 From: Jesse Brandeburg Date: Wed, 25 Sep 2013 23:41:14 +0000 Subject: [PATCH 319/523] i40e: better return values As mentioned by Joe Perches, clean up return values in some functions making sure to have consistent return types, not mixing types. A couple of Joe's comments suggested returning void, but since the functions in question are ndo defined, the return values are fixed. So make a comment in the header that notes this is a function called by net_device_ops. v2: fix post increment bug in return CC: Joe Perches Signed-off-by: Jesse Brandeburg Tested-by: Kavindya Deegala Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_main.c | 37 ++++++++++++--------- 1 file changed, 21 insertions(+), 16 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 60c71527f57c..221aa4795017 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -1787,6 +1787,8 @@ int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid) * i40e_vsi_kill_vlan - Remove vsi membership for given vlan * @vsi: the vsi being configured * @vid: vlan id to be removed (0 = untagged only , -1 = any) + * + * Return: 0 on success or negative otherwise **/ int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid) { @@ -1860,37 +1862,39 @@ int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid) * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload * @netdev: network interface to be adjusted * @vid: vlan id to be added + * + * net_device_ops implementation for adding vlan ids **/ static int i40e_vlan_rx_add_vid(struct net_device *netdev, __always_unused __be16 proto, u16 vid) { struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi; - int ret; + int ret = 0; if (vid > 4095) - return 0; + return -EINVAL; + + netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid); - netdev_info(vsi->netdev, "adding %pM vid=%d\n", - netdev->dev_addr, vid); /* If the network stack called us with vid = 0, we should * indicate to i40e_vsi_add_vlan() that we want to receive * any traffic (i.e. with any vlan tag, or untagged) */ ret = i40e_vsi_add_vlan(vsi, vid ? vid : I40E_VLAN_ANY); - if (!ret) { - if (vid < VLAN_N_VID) - set_bit(vid, vsi->active_vlans); - } + if (!ret && (vid < VLAN_N_VID)) + set_bit(vid, vsi->active_vlans); - return 0; + return ret; } /** * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload * @netdev: network interface to be adjusted * @vid: vlan id to be removed + * + * net_device_ops implementation for adding vlan ids **/ static int i40e_vlan_rx_kill_vid(struct net_device *netdev, __always_unused __be16 proto, u16 vid) @@ -1898,15 +1902,16 @@ static int i40e_vlan_rx_kill_vid(struct net_device *netdev, struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi; - netdev_info(vsi->netdev, "removing %pM vid=%d\n", - netdev->dev_addr, vid); + netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid); + /* return code is ignored as there is nothing a user * can do about failure to remove and a log message was - * already printed from another function + * already printed from the other function */ i40e_vsi_kill_vlan(vsi, vid); clear_bit(vid, vsi->active_vlans); + return 0; } @@ -3324,7 +3329,8 @@ static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf) **/ static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg) { - int num_tc = 0, i; + u8 num_tc = 0; + int i; /* Scan the ETS Config Priority Table to find * traffic class enabled for a given priority @@ -3339,9 +3345,7 @@ static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg) /* Traffic class index starts from zero so * increment to return the actual count */ - num_tc++; - - return num_tc; + return num_tc + 1; } /** @@ -3491,6 +3495,7 @@ static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi) /* 3 bits out of 4 for each TC */ vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7); } + return 0; } From d7595a226f6b304f0e51fc31f96bf00d1500f78a Mon Sep 17 00:00:00 2001 From: Jesse Brandeburg Date: Fri, 13 Sep 2013 08:23:22 +0000 Subject: [PATCH 320/523] i40e: clean up coccicheck reported errors coccicheck shows: drivers/net/ethernet/intel/i40e/i40e_adminq.c:704:2-8: Replace memcpy with struct assignment drivers/net/ethernet/intel/i40e/i40e_adminq.c:763:1-7: Replace memcpy with struct assignment drivers/net/ethernet/intel/i40e/i40e_adminq.c:810:2-8: Replace memcpy with struct assignment drivers/net/ethernet/intel/i40e/i40e_common.c:510:2-8: Replace memcpy with struct assignment Fix each of them with a *a = *b; Signed-off-by: Jesse Brandeburg Tested-by: Kavindya Deegala Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_adminq.c | 7 +++---- drivers/net/ethernet/intel/i40e/i40e_common.c | 2 +- 2 files changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_adminq.c b/drivers/net/ethernet/intel/i40e/i40e_adminq.c index 0c524fa9f811..cfef7fc32cdd 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_adminq.c +++ b/drivers/net/ethernet/intel/i40e/i40e_adminq.c @@ -701,8 +701,7 @@ i40e_status i40e_asq_send_command(struct i40e_hw *hw, details = I40E_ADMINQ_DETAILS(hw->aq.asq, hw->aq.asq.next_to_use); if (cmd_details) { - memcpy(details, cmd_details, - sizeof(struct i40e_asq_cmd_details)); + *details = *cmd_details; /* If the cmd_details are defined copy the cookie. The * cpu_to_le32 is not needed here because the data is ignored @@ -760,7 +759,7 @@ i40e_status i40e_asq_send_command(struct i40e_hw *hw, desc_on_ring = I40E_ADMINQ_DESC(hw->aq.asq, hw->aq.asq.next_to_use); /* if the desc is available copy the temp desc to the right place */ - memcpy(desc_on_ring, desc, sizeof(struct i40e_aq_desc)); + *desc_on_ring = *desc; /* if buff is not NULL assume indirect command */ if (buff != NULL) { @@ -807,7 +806,7 @@ i40e_status i40e_asq_send_command(struct i40e_hw *hw, /* if ready, copy the desc back to temp */ if (i40e_asq_done(hw)) { - memcpy(desc, desc_on_ring, sizeof(struct i40e_aq_desc)); + *desc = *desc_on_ring; if (buff != NULL) memcpy(buff, dma_buff->va, buff_size); retval = le16_to_cpu(desc->retval); diff --git a/drivers/net/ethernet/intel/i40e/i40e_common.c b/drivers/net/ethernet/intel/i40e/i40e_common.c index c21df7bc3b1d..1e4ea134975a 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_common.c +++ b/drivers/net/ethernet/intel/i40e/i40e_common.c @@ -507,7 +507,7 @@ i40e_status i40e_aq_get_link_info(struct i40e_hw *hw, /* save link status information */ if (link) - memcpy(link, hw_link_info, sizeof(struct i40e_link_status)); + *link = *hw_link_info; /* flag cleared so helper functions don't call AQ again */ hw->phy.get_link_info = false; From 4880292556f7ea7c12dbccb1c7dfd9fd0f38bcf3 Mon Sep 17 00:00:00 2001 From: Mateusz Krawczuk Date: Tue, 24 Sep 2013 17:04:11 +0200 Subject: [PATCH 321/523] pinctrl: Correct number of pins for s5pv210 Values of pins in table s5pv210 bank are incorrect. This patch correct values. Signed-off-by: Mateusz Krawczuk Signed-off-by: Kyungmin Park Acked-by: Tomasz Figa Acked-by: Kukjin Kim Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-exynos.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/pinctrl/pinctrl-exynos.c b/drivers/pinctrl/pinctrl-exynos.c index 2689f8d01a1e..155b1b3a0e7a 100644 --- a/drivers/pinctrl/pinctrl-exynos.c +++ b/drivers/pinctrl/pinctrl-exynos.c @@ -663,18 +663,18 @@ static void exynos_pinctrl_resume(struct samsung_pinctrl_drv_data *drvdata) /* pin banks of s5pv210 pin-controller */ static struct samsung_pin_bank s5pv210_pin_bank[] = { EXYNOS_PIN_BANK_EINTG(8, 0x000, "gpa0", 0x00), - EXYNOS_PIN_BANK_EINTG(6, 0x020, "gpa1", 0x04), + EXYNOS_PIN_BANK_EINTG(4, 0x020, "gpa1", 0x04), EXYNOS_PIN_BANK_EINTG(8, 0x040, "gpb", 0x08), EXYNOS_PIN_BANK_EINTG(5, 0x060, "gpc0", 0x0c), EXYNOS_PIN_BANK_EINTG(5, 0x080, "gpc1", 0x10), EXYNOS_PIN_BANK_EINTG(4, 0x0a0, "gpd0", 0x14), - EXYNOS_PIN_BANK_EINTG(4, 0x0c0, "gpd1", 0x18), - EXYNOS_PIN_BANK_EINTG(5, 0x0e0, "gpe0", 0x1c), - EXYNOS_PIN_BANK_EINTG(8, 0x100, "gpe1", 0x20), - EXYNOS_PIN_BANK_EINTG(6, 0x120, "gpf0", 0x24), + EXYNOS_PIN_BANK_EINTG(6, 0x0c0, "gpd1", 0x18), + EXYNOS_PIN_BANK_EINTG(8, 0x0e0, "gpe0", 0x1c), + EXYNOS_PIN_BANK_EINTG(5, 0x100, "gpe1", 0x20), + EXYNOS_PIN_BANK_EINTG(8, 0x120, "gpf0", 0x24), EXYNOS_PIN_BANK_EINTG(8, 0x140, "gpf1", 0x28), EXYNOS_PIN_BANK_EINTG(8, 0x160, "gpf2", 0x2c), - EXYNOS_PIN_BANK_EINTG(8, 0x180, "gpf3", 0x30), + EXYNOS_PIN_BANK_EINTG(6, 0x180, "gpf3", 0x30), EXYNOS_PIN_BANK_EINTG(7, 0x1a0, "gpg0", 0x34), EXYNOS_PIN_BANK_EINTG(7, 0x1c0, "gpg1", 0x38), EXYNOS_PIN_BANK_EINTG(7, 0x1e0, "gpg2", 0x3c), From bf00ca35cec8f0894dcfd90f88b03af1d5c7b86f Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Fri, 27 Sep 2013 08:25:14 -0500 Subject: [PATCH 322/523] regulator: ti-abb: Fix bias voltage glitch in transition to bypass mode As documented in Application Note SWPA117 v2.1(NDA), LDO override has a requirement that when switching from Bias active + override active mode(FBB/RBB) to Bypass(nominal) mode, LDO reset must be performed *after* LDO transitions to Bypass(nominal) mode. The same rule in reverse applies when switching from a ABB bypass mode to ABB enabled - LDO override *must* be performed prior to transition to required ABB mode, if we do not do that, the same glitch takes place. Currently while transitioning to ABB bypass, we reset the LDO overide prior to the transition which causes a few milliseconds where ABB LDO voltage could go all the way to 800mV(based on SoC process node), during this period, the delta voltage between VDD rail and VBB rail could cause the system to improperly function. Signed-off-by: Nishanth Menon Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/regulator/ti-abb-regulator.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/regulator/ti-abb-regulator.c b/drivers/regulator/ti-abb-regulator.c index d8e3e1262bc2..20c271d49dcb 100644 --- a/drivers/regulator/ti-abb-regulator.c +++ b/drivers/regulator/ti-abb-regulator.c @@ -279,8 +279,12 @@ static int ti_abb_set_opp(struct regulator_dev *rdev, struct ti_abb *abb, ti_abb_rmw(regs->opp_sel_mask, info->opp_sel, regs->control_reg, abb->base); - /* program LDO VBB vset override if needed */ - if (abb->ldo_base) + /* + * program LDO VBB vset override if needed for !bypass mode + * XXX: Do not switch sequence - for !bypass, LDO override reset *must* + * be performed *before* switch to bias mode else VBB glitches. + */ + if (abb->ldo_base && info->opp_sel != TI_ABB_NOMINAL_OPP) ti_abb_program_ldovbb(dev, abb, info); /* Initiate ABB ldo change */ @@ -295,6 +299,14 @@ static int ti_abb_set_opp(struct regulator_dev *rdev, struct ti_abb *abb, if (ret) goto out; + /* + * Reset LDO VBB vset override bypass mode + * XXX: Do not switch sequence - for bypass, LDO override reset *must* + * be performed *after* switch to bypass else VBB glitches. + */ + if (abb->ldo_base && info->opp_sel == TI_ABB_NOMINAL_OPP) + ti_abb_program_ldovbb(dev, abb, info); + out: return ret; } From 7fd9ddd5f71078df34f2fd7d375fbf0a8d92f9cc Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Thu, 26 Sep 2013 18:18:03 +0530 Subject: [PATCH 323/523] pinctrl: palmas: do not abort pin configuration for BIAS_DEFAULT Recent movement of all configurations of pin in the single call of pin_config_set(), it is aborting configuration if BIAS_PULL_PIN_DEFAULT is selected as return of configuration. The original idea was to just avoid any update on register for pull up/down configuration if this option is selected. Fixing this by just bypassing any register update for BIAS_PULL_PIN_DEFAULT and continuing the remaining configuration. Signed-off-by: Laxman Dewangan Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-palmas.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/pinctrl/pinctrl-palmas.c b/drivers/pinctrl/pinctrl-palmas.c index 82638fac3cfa..30c4d356cb33 100644 --- a/drivers/pinctrl/pinctrl-palmas.c +++ b/drivers/pinctrl/pinctrl-palmas.c @@ -891,9 +891,10 @@ static int palmas_pinconf_set(struct pinctrl_dev *pctldev, param = pinconf_to_config_param(configs[i]); param_val = pinconf_to_config_argument(configs[i]); + if (param == PIN_CONFIG_BIAS_PULL_PIN_DEFAULT) + continue; + switch (param) { - case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT: - return 0; case PIN_CONFIG_BIAS_DISABLE: case PIN_CONFIG_BIAS_PULL_UP: case PIN_CONFIG_BIAS_PULL_DOWN: From 0c06a5d4b13cd66c833805a0d1db76b977944aac Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Tue, 10 Sep 2013 00:54:17 +0200 Subject: [PATCH 324/523] arm: Fix build error with context tracking calls ad65782fba50 (context_tracking: Optimize main APIs off case with static key) converted context tracking main APIs to inline function and left ARM asm callers behind. This can be easily fixed by making ARM calling the post static keys context tracking function. We just need to replicate the static key checks there. We'll remove these later when ARM will support the context tracking static keys. Reported-by: Guenter Roeck Reported-by: Russell King Signed-off-by: Frederic Weisbecker Tested-by: Kevin Hilman Cc: Nicolas Pitre Cc: Anil Kumar Cc: Tony Lindgren Cc: Benoit Cousson Cc: Guenter Roeck Cc: Russell King Cc: Kevin Hilman --- arch/arm/kernel/entry-header.S | 8 ++++---- kernel/context_tracking.c | 12 ++++++++++++ 2 files changed, 16 insertions(+), 4 deletions(-) diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S index de23a9beed13..39f89fbd5111 100644 --- a/arch/arm/kernel/entry-header.S +++ b/arch/arm/kernel/entry-header.S @@ -329,10 +329,10 @@ #ifdef CONFIG_CONTEXT_TRACKING .if \save stmdb sp!, {r0-r3, ip, lr} - bl user_exit + bl context_tracking_user_exit ldmia sp!, {r0-r3, ip, lr} .else - bl user_exit + bl context_tracking_user_exit .endif #endif .endm @@ -341,10 +341,10 @@ #ifdef CONFIG_CONTEXT_TRACKING .if \save stmdb sp!, {r0-r3, ip, lr} - bl user_enter + bl context_tracking_user_enter ldmia sp!, {r0-r3, ip, lr} .else - bl user_enter + bl context_tracking_user_enter .endif #endif .endm diff --git a/kernel/context_tracking.c b/kernel/context_tracking.c index 247091bf0587..859c8dfd78a1 100644 --- a/kernel/context_tracking.c +++ b/kernel/context_tracking.c @@ -50,6 +50,15 @@ void context_tracking_user_enter(void) { unsigned long flags; + /* + * Repeat the user_enter() check here because some archs may be calling + * this from asm and if no CPU needs context tracking, they shouldn't + * go further. Repeat the check here until they support the static key + * check. + */ + if (!static_key_false(&context_tracking_enabled)) + return; + /* * Some contexts may involve an exception occuring in an irq, * leading to that nesting: @@ -151,6 +160,9 @@ void context_tracking_user_exit(void) { unsigned long flags; + if (!static_key_false(&context_tracking_enabled)) + return; + if (in_interrupt()) return; From 153369139a06462c310b607e612093074c73b382 Mon Sep 17 00:00:00 2001 From: Kim Phillips Date: Tue, 17 Sep 2013 11:31:53 -0500 Subject: [PATCH 325/523] i2c: s3c2410: fix clk_disable/clk_unprepare WARNings commit d16933b33914a6dff38a4ecbe8edce44a17898e8 "i2c: s3c2410: Move location of clk_prepare_enable() call in probe function" refactored clk_enable and clk_disable calls yet neglected to remove the clk_disable_unprepare call in the module's remove(). It helps remove warnings on an arndale during unbind: echo 12c90000.i2c > /sys/bus/platform/devices/12c90000.i2c/driver/unbind ------------[ cut here ]------------ WARNING: CPU: 0 PID: 2548 at drivers/clk/clk.c:842 clk_disable+0x18/0x24() Modules linked in: CPU: 0 PID: 2548 Comm: bash Not tainted 3.11.0-next-20130916-00003-gf4bddbc #6 [] (unwind_backtrace+0x0/0xf8) from [] (show_stack+0x10/0x14) [] (show_stack+0x10/0x14) from [] (dump_stack+0x6c/0xac) [] (dump_stack+0x6c/0xac) from [] (warn_slowpath_common+0x64/0x88) [] (warn_slowpath_common+0x64/0x88) from [] (warn_slowpath_null+0x1c/0x24) [] (warn_slowpath_null+0x1c/0x24) from [] (clk_disable+0x18/0x24) [] (clk_disable+0x18/0x24) from [] (s3c24xx_i2c_remove+0x28/0x70) [] (s3c24xx_i2c_remove+0x28/0x70) from [] (platform_drv_remove+0x18/0x1c) [] (platform_drv_remove+0x18/0x1c) from [] (__device_release_driver+0x58/0xb4) [] (__device_release_driver+0x58/0xb4) from [] (device_release_driver+0x1c/0x28) [] (device_release_driver+0x1c/0x28) from [] (unbind_store+0x58/0x90) [] (unbind_store+0x58/0x90) from [] (drv_attr_store+0x20/0x2c) [] (drv_attr_store+0x20/0x2c) from [] (sysfs_write_file+0x168/0x198) [] (sysfs_write_file+0x168/0x198) from [] (vfs_write+0xb0/0x194) [] (vfs_write+0xb0/0x194) from [] (SyS_write+0x3c/0x70) [] (SyS_write+0x3c/0x70) from [] (ret_fast_syscall+0x0/0x30) ---[ end trace 4c9f9403066f57a6 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 2548 at drivers/clk/clk.c:751 clk_unprepare+0x14/0x1c() Modules linked in: CPU: 0 PID: 2548 Comm: bash Tainted: G W 3.11.0-next-20130916-00003-gf4bddbc #6 [] (unwind_backtrace+0x0/0xf8) from [] (show_stack+0x10/0x14) [] (show_stack+0x10/0x14) from [] (dump_stack+0x6c/0xac) [] (dump_stack+0x6c/0xac) from [] (warn_slowpath_common+0x64/0x88) [] (warn_slowpath_common+0x64/0x88) from [] (warn_slowpath_null+0x1c/0x24) [] (warn_slowpath_null+0x1c/0x24) from [] (clk_unprepare+0x14/0x1c) [] (clk_unprepare+0x14/0x1c) from [] (s3c24xx_i2c_remove+0x30/0x70) [] (s3c24xx_i2c_remove+0x30/0x70) from [] (platform_drv_remove+0x18/0x1c) [] (platform_drv_remove+0x18/0x1c) from [] (__device_release_driver+0x58/0xb4) [] (__device_release_driver+0x58/0xb4) from [] (device_release_driver+0x1c/0x28) [] (device_release_driver+0x1c/0x28) from [] (unbind_store+0x58/0x90) [] (unbind_store+0x58/0x90) from [] (drv_attr_store+0x20/0x2c) [] (drv_attr_store+0x20/0x2c) from [] (sysfs_write_file+0x168/0x198) [] (sysfs_write_file+0x168/0x198) from [] (vfs_write+0xb0/0x194) [] (vfs_write+0xb0/0x194) from [] (SyS_write+0x3c/0x70) [] (SyS_write+0x3c/0x70) from [] (ret_fast_syscall+0x0/0x30) ---[ end trace 4c9f9403066f57a7 ]--- Signed-off-by: Kim Phillips Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-s3c2410.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index 3535f3c0f7b4..3747b9bf67d6 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -1178,8 +1178,6 @@ static int s3c24xx_i2c_remove(struct platform_device *pdev) i2c_del_adapter(&i2c->adap); - clk_disable_unprepare(i2c->clk); - if (pdev->dev.of_node && IS_ERR(i2c->pctrl)) s3c24xx_i2c_dt_gpio_free(i2c); From c1a99467804767400752a4087d3e96af2759a046 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Wed, 18 Sep 2013 14:50:52 +0200 Subject: [PATCH 326/523] i2c: mv64xxx: Fix some build warnings Some functions and variables are only used if the configuration selects HAVE_CLK. Protect them with a corresponding #ifdef CONFIG_HAVE_CLK block to avoid compiler warnings. Signed-off-by: Thierry Reding [wsa: added marker to #endif] Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-mv64xxx.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c index 7f3a47443494..52c694363b27 100644 --- a/drivers/i2c/busses/i2c-mv64xxx.c +++ b/drivers/i2c/busses/i2c-mv64xxx.c @@ -697,6 +697,7 @@ static const struct of_device_id mv64xxx_i2c_of_match_table[] = { MODULE_DEVICE_TABLE(of, mv64xxx_i2c_of_match_table); #ifdef CONFIG_OF +#ifdef CONFIG_HAVE_CLK static int mv64xxx_calc_freq(const int tclk, const int n, const int m) { @@ -726,16 +727,12 @@ mv64xxx_find_baud_factors(const u32 req_freq, const u32 tclk, u32 *best_n, return false; return true; } +#endif /* CONFIG_HAVE_CLK */ static int mv64xxx_of_config(struct mv64xxx_i2c_data *drv_data, struct device *dev) { - const struct of_device_id *device; - struct device_node *np = dev->of_node; - u32 bus_freq, tclk; - int rc = 0; - /* CLK is mandatory when using DT to describe the i2c bus. We * need to know tclk in order to calculate bus clock * factors. @@ -744,6 +741,11 @@ mv64xxx_of_config(struct mv64xxx_i2c_data *drv_data, /* Have OF but no CLK */ return -ENODEV; #else + const struct of_device_id *device; + struct device_node *np = dev->of_node; + u32 bus_freq, tclk; + int rc = 0; + if (IS_ERR(drv_data->clk)) { rc = -ENODEV; goto out; From 85b3a9356e84f683dd27fe8b73ad15608b4fc2c5 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Wed, 18 Sep 2013 14:51:40 +0200 Subject: [PATCH 327/523] i2c: mv64xxx: Do not use writel_relaxed() The driver is used on PowerPC which don't provide writel_relaxed(). This breaks the c2k and prpmc2800 default configurations. To fix the build, turn the calls to writel_relaxed() into writel(). The impacts for ARM should be minimal. Signed-off-by: Thierry Reding Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-mv64xxx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c index 52c694363b27..d3e9cc3153a9 100644 --- a/drivers/i2c/busses/i2c-mv64xxx.c +++ b/drivers/i2c/busses/i2c-mv64xxx.c @@ -234,9 +234,9 @@ static int mv64xxx_i2c_offload_msg(struct mv64xxx_i2c_data *drv_data) ctrl_reg |= MV64XXX_I2C_BRIDGE_CONTROL_WR | (msg->len - 1) << MV64XXX_I2C_BRIDGE_CONTROL_TX_SIZE_SHIFT; - writel_relaxed(data_reg_lo, + writel(data_reg_lo, drv_data->reg_base + MV64XXX_I2C_REG_TX_DATA_LO); - writel_relaxed(data_reg_hi, + writel(data_reg_hi, drv_data->reg_base + MV64XXX_I2C_REG_TX_DATA_HI); } else { From bd63ace4dc4290165bbf3bf546eba50453d0aa9d Mon Sep 17 00:00:00 2001 From: "Chew, Chiau Ee" Date: Fri, 27 Sep 2013 02:57:35 +0800 Subject: [PATCH 328/523] i2c: designware: 10-bit addressing mode enabling if I2C_DYNAMIC_TAR_UPDATE is set According to Designware I2C spec, if I2C_DYNAMIC_TAR_UPDATE is set to 1, the 10-bit addressing mode is controlled by IC_10BITADDR_MASTER bit of IC_TAR register instead of IC_CON register. The IC_10BITADDR_MASTER in IC_CON register becomes read-only copy. Since I2C_DYNAMIC_TAR_UPDATE value can't be detected from hardware register, so we will always set the IC_10BITADDR_MASTER bit in both IC_CON and IC_TAR register whenever 10-bit addresing mode is requested by user application. Signed-off-by: Chew, Chiau Ee Reviewed-by: Mika Westerberg Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-designware-core.c | 26 ++++++++++++++++++------ 1 file changed, 20 insertions(+), 6 deletions(-) diff --git a/drivers/i2c/busses/i2c-designware-core.c b/drivers/i2c/busses/i2c-designware-core.c index dbecf08399f8..5888feef1ac5 100644 --- a/drivers/i2c/busses/i2c-designware-core.c +++ b/drivers/i2c/busses/i2c-designware-core.c @@ -98,6 +98,8 @@ #define DW_IC_ERR_TX_ABRT 0x1 +#define DW_IC_TAR_10BITADDR_MASTER BIT(12) + /* * status codes */ @@ -388,22 +390,34 @@ static int i2c_dw_wait_bus_not_busy(struct dw_i2c_dev *dev) static void i2c_dw_xfer_init(struct dw_i2c_dev *dev) { struct i2c_msg *msgs = dev->msgs; - u32 ic_con; + u32 ic_con, ic_tar = 0; /* Disable the adapter */ __i2c_dw_enable(dev, false); - /* set the slave (target) address */ - dw_writel(dev, msgs[dev->msg_write_idx].addr, DW_IC_TAR); - /* if the slave address is ten bit address, enable 10BITADDR */ ic_con = dw_readl(dev, DW_IC_CON); - if (msgs[dev->msg_write_idx].flags & I2C_M_TEN) + if (msgs[dev->msg_write_idx].flags & I2C_M_TEN) { ic_con |= DW_IC_CON_10BITADDR_MASTER; - else + /* + * If I2C_DYNAMIC_TAR_UPDATE is set, the 10-bit addressing + * mode has to be enabled via bit 12 of IC_TAR register. + * We set it always as I2C_DYNAMIC_TAR_UPDATE can't be + * detected from registers. + */ + ic_tar = DW_IC_TAR_10BITADDR_MASTER; + } else { ic_con &= ~DW_IC_CON_10BITADDR_MASTER; + } + dw_writel(dev, ic_con, DW_IC_CON); + /* + * Set the slave (target) address and enable 10-bit addressing mode + * if applicable. + */ + dw_writel(dev, msgs[dev->msg_write_idx].addr | ic_tar, DW_IC_TAR); + /* Enable the adapter */ __i2c_dw_enable(dev, true); From d2212b4dce596fee83e5c523400bf084f4cc816c Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Thu, 26 Sep 2013 17:27:00 +0100 Subject: [PATCH 329/523] lockref: allow relaxed cmpxchg64 variant for lockless updates The 64-bit cmpxchg operation on the lockref is ordered by virtue of hazarding between the cmpxchg operation and the reference count manipulation. On weakly ordered memory architectures (such as ARM), it can be of great benefit to omit the barrier instructions where they are not needed. This patch moves the lockless lockref code over to a cmpxchg64_relaxed operation, which doesn't provide barrier semantics. If the operation isn't defined, we simply #define it as the usual 64-bit cmpxchg macro. Cc: Waiman Long Signed-off-by: Will Deacon Signed-off-by: Linus Torvalds --- lib/lockref.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/lib/lockref.c b/lib/lockref.c index 677d036cf3c7..e294ae445c9a 100644 --- a/lib/lockref.c +++ b/lib/lockref.c @@ -3,6 +3,14 @@ #ifdef CONFIG_CMPXCHG_LOCKREF +/* + * Allow weakly-ordered memory architectures to provide barrier-less + * cmpxchg semantics for lockref updates. + */ +#ifndef cmpxchg64_relaxed +# define cmpxchg64_relaxed cmpxchg64 +#endif + /* * Note that the "cmpxchg()" reloads the "old" value for the * failure case. @@ -14,8 +22,9 @@ while (likely(arch_spin_value_unlocked(old.lock.rlock.raw_lock))) { \ struct lockref new = old, prev = old; \ CODE \ - old.lock_count = cmpxchg64(&lockref->lock_count, \ - old.lock_count, new.lock_count); \ + old.lock_count = cmpxchg64_relaxed(&lockref->lock_count, \ + old.lock_count, \ + new.lock_count); \ if (likely(old.lock_count == prev.lock_count)) { \ SUCCESS; \ } \ From 730d7d339884f20da28b59bf6f0a16af6400a113 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 23 Sep 2013 14:41:17 -0700 Subject: [PATCH 330/523] sysfs: Allow mounting without CONFIG_NET In kobj_ns_current_may_mount the default should be to allow the mount. The test is only for a single kobj_ns_type at a time, and unless there is a reason to prevent it the mounting sysfs should be allowed. Subsystems that are not registered can't have are not involved so can't have a reason to prevent mounting sysfs. This is a bug-fix to commit 7dc5dbc879bd ("sysfs: Restrict mounting sysfs") that came in via the userns tree during the 3.12 merge window. Reported-and-tested-by: James Hogan Signed-off-by: "Eric W. Biederman" Signed-off-by: Linus Torvalds --- lib/kobject.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/lib/kobject.c b/lib/kobject.c index 962175134702..669bf190d4fb 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -933,10 +933,7 @@ const struct kobj_ns_type_operations *kobj_ns_ops(struct kobject *kobj) bool kobj_ns_current_may_mount(enum kobj_ns_type type) { - bool may_mount = false; - - if (type == KOBJ_NS_TYPE_NONE) - return true; + bool may_mount = true; spin_lock(&kobj_ns_type_lock); if ((type > KOBJ_NS_TYPE_NONE) && (type < KOBJ_NS_TYPES) && From 6db83cea1c975b9a102e17def7d2795814e1ae2b Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Fri, 27 Sep 2013 09:04:41 +0100 Subject: [PATCH 331/523] arm64: fix possible invalid FPSIMD initialization state If context switching happens during executing fpsimd_flush_thread(), stale value in FPSIMD registers will be saved into current thread's fpsimd_state by fpsimd_thread_switch(). That may cause invalid initialization state for the new process, so disable preemption when executing fpsimd_flush_thread(). Signed-off-by: Jiang Liu Cc: Jiang Liu Signed-off-by: Catalin Marinas --- arch/arm64/kernel/fpsimd.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index 1f2e4d5a5c0f..bb785d23dbde 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -80,8 +80,10 @@ void fpsimd_thread_switch(struct task_struct *next) void fpsimd_flush_thread(void) { + preempt_disable(); memset(¤t->thread.fpsimd_state, 0, sizeof(struct fpsimd_state)); fpsimd_load_state(¤t->thread.fpsimd_state); + preempt_enable(); } #ifdef CONFIG_KERNEL_MODE_NEON From 2bd161a605f1f84a5fc8a4fe8410113a94f79355 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 27 Sep 2013 13:46:04 -0700 Subject: [PATCH 332/523] sparc64: Fix buggy strlcpy() conversion in ldom_reboot(). Commit 117a0c5fc9c2d06045bd217385b2b39ea426b5a6 ("sparc: kernel: using strlcpy() instead of strcpy()") added a bug to ldom_reboot in arch/sparc/kernel/ds.c - strcpy(full_boot_str + strlen("boot "), boot_command); + strlcpy(full_boot_str + strlen("boot "), boot_command, + sizeof(full_boot_str + strlen("boot "))); That last sizeof() expression evaluates to sizeof(size_t) which is not what was intended. Also even the corrected: sizeof(full_boot_str) + strlen("boot ") is not right as the destination buffer length is just plain "sizeof(full_boot_str)" and that's what the final argument should be. Signed-off-by: David S. Miller --- arch/sparc/kernel/ds.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/sparc/kernel/ds.c b/arch/sparc/kernel/ds.c index 62d6b153ffa2..4d9ac8406f32 100644 --- a/arch/sparc/kernel/ds.c +++ b/arch/sparc/kernel/ds.c @@ -851,7 +851,7 @@ void ldom_reboot(const char *boot_command) strcpy(full_boot_str, "boot "); strlcpy(full_boot_str + strlen("boot "), boot_command, - sizeof(full_boot_str + strlen("boot "))); + sizeof(full_boot_str)); len = strlen(full_boot_str); if (reboot_data_supported) { From b54881f9949e4eac6ff23c86625467a365085bd6 Mon Sep 17 00:00:00 2001 From: Ajit Khaparde Date: Fri, 27 Sep 2013 15:17:04 -0500 Subject: [PATCH 333/523] be2net: Fix to prevent Tx stall on SH-R when packet size < 32 Tx on SH-R can lockup if the packet size is less than 32 bytes. Pad such packets to a safer 36-byte size. Patch uses the Lancer-R workaround - which checks for packet <= 32-bytes Signed-off-by: Ajit Khaparde Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be_main.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 100b528b9bd0..31fa13bc9eed 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -855,11 +855,11 @@ static struct sk_buff *be_xmit_workarounds(struct be_adapter *adapter, unsigned int eth_hdr_len; struct iphdr *ip; - /* Lancer ASIC has a bug wherein packets that are 32 bytes or less + /* Lancer, SH-R ASICs have a bug wherein Packets that are 32 bytes or less * may cause a transmit stall on that port. So the work-around is to - * pad such packets to a 36-byte length. + * pad short packets (<= 32 bytes) to a 36-byte length. */ - if (unlikely(lancer_chip(adapter) && skb->len <= 32)) { + if (unlikely(!BEx_chip(adapter) && skb->len <= 32)) { if (skb_padto(skb, 36)) goto tx_drop; skb->len = 36; From d44517fde6d0f40c2678ae9540115ec80cc90a46 Mon Sep 17 00:00:00 2001 From: Ajit Khaparde Date: Fri, 27 Sep 2013 15:17:31 -0500 Subject: [PATCH 334/523] be2net: Fix the size of be_nic_res_desc structure Size of be_nic_res_desc structure is incorrect. Fix it. Signed-off-by: Ajit Khaparde Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be_cmds.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.h b/drivers/net/ethernet/emulex/benet/be_cmds.h index d026226db88c..51a93bd4d4c0 100644 --- a/drivers/net/ethernet/emulex/benet/be_cmds.h +++ b/drivers/net/ethernet/emulex/benet/be_cmds.h @@ -1791,7 +1791,7 @@ struct be_nic_res_desc { u8 acpi_params; u8 wol_param; u16 rsvd7; - u32 rsvd8[3]; + u32 rsvd8[7]; } __packed; struct be_cmd_req_get_func_config { From d9d604f865ea82a6d344871c76f4a01cbb0b2b0f Mon Sep 17 00:00:00 2001 From: Ajit Khaparde Date: Fri, 27 Sep 2013 15:17:58 -0500 Subject: [PATCH 335/523] be2net: Fix VLAN promiscuous mode programming When the interface runs out of the allocated entries in VLAN table, we program the interface in VLAN promiscuous mode. Use OPCODE_COMMON_NTWK_RX_FILTER to set VLAN Promiscuous mode instead of OPCODE_COMMON_NTWK_VLAN_CONFIG. Signed-off-by: Ajit Khaparde Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be.h | 1 + drivers/net/ethernet/emulex/benet/be_cmds.c | 9 ++++++ drivers/net/ethernet/emulex/benet/be_cmds.h | 2 ++ drivers/net/ethernet/emulex/benet/be_main.c | 34 +++++++++++++++++---- 4 files changed, 40 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index ace5050dba38..95d303d2da94 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -333,6 +333,7 @@ enum vf_state { #define BE_FLAGS_LINK_STATUS_INIT 1 #define BE_FLAGS_WORKER_SCHEDULED (1 << 3) +#define BE_FLAGS_VLAN_PROMISC (1 << 4) #define BE_FLAGS_NAPI_ENABLED (1 << 9) #define BE_UC_PMAC_COUNT 30 #define BE_VF_UC_PMAC_COUNT 2 diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.c b/drivers/net/ethernet/emulex/benet/be_cmds.c index 1ab5dab11eff..bd0e0c0bbcd8 100644 --- a/drivers/net/ethernet/emulex/benet/be_cmds.c +++ b/drivers/net/ethernet/emulex/benet/be_cmds.c @@ -180,6 +180,9 @@ static int be_mcc_compl_process(struct be_adapter *adapter, dev_err(&adapter->pdev->dev, "opcode %d-%d failed:status %d-%d\n", opcode, subsystem, compl_status, extd_status); + + if (extd_status == MCC_ADDL_STS_INSUFFICIENT_RESOURCES) + return extd_status; } } done: @@ -1812,6 +1815,12 @@ int be_cmd_rx_filter(struct be_adapter *adapter, u32 flags, u32 value) } else if (flags & IFF_ALLMULTI) { req->if_flags_mask = req->if_flags = cpu_to_le32(BE_IF_FLAGS_MCAST_PROMISCUOUS); + } else if (flags & BE_FLAGS_VLAN_PROMISC) { + req->if_flags_mask = cpu_to_le32(BE_IF_FLAGS_VLAN_PROMISCUOUS); + + if (value == ON) + req->if_flags = + cpu_to_le32(BE_IF_FLAGS_VLAN_PROMISCUOUS); } else { struct netdev_hw_addr *ha; int i = 0; diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.h b/drivers/net/ethernet/emulex/benet/be_cmds.h index 51a93bd4d4c0..108ca8abf0af 100644 --- a/drivers/net/ethernet/emulex/benet/be_cmds.h +++ b/drivers/net/ethernet/emulex/benet/be_cmds.h @@ -60,6 +60,8 @@ enum { MCC_STATUS_NOT_SUPPORTED = 66 }; +#define MCC_ADDL_STS_INSUFFICIENT_RESOURCES 0x16 + #define CQE_STATUS_COMPL_MASK 0xFFFF #define CQE_STATUS_COMPL_SHIFT 0 /* bits 0 - 15 */ #define CQE_STATUS_EXTD_MASK 0xFFFF diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 31fa13bc9eed..036f5830fee4 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -1013,18 +1013,40 @@ static int be_vid_config(struct be_adapter *adapter) status = be_cmd_vlan_config(adapter, adapter->if_handle, vids, num, 1, 0); - /* Set to VLAN promisc mode as setting VLAN filter failed */ if (status) { - dev_info(&adapter->pdev->dev, "Exhausted VLAN HW filters.\n"); - dev_info(&adapter->pdev->dev, "Disabling HW VLAN filtering.\n"); - goto set_vlan_promisc; + /* Set to VLAN promisc mode as setting VLAN filter failed */ + if (status == MCC_ADDL_STS_INSUFFICIENT_RESOURCES) + goto set_vlan_promisc; + dev_err(&adapter->pdev->dev, + "Setting HW VLAN filtering failed.\n"); + } else { + if (adapter->flags & BE_FLAGS_VLAN_PROMISC) { + /* hw VLAN filtering re-enabled. */ + status = be_cmd_rx_filter(adapter, + BE_FLAGS_VLAN_PROMISC, OFF); + if (!status) { + dev_info(&adapter->pdev->dev, + "Disabling VLAN Promiscuous mode.\n"); + adapter->flags &= ~BE_FLAGS_VLAN_PROMISC; + dev_info(&adapter->pdev->dev, + "Re-Enabling HW VLAN filtering\n"); + } + } } return status; set_vlan_promisc: - status = be_cmd_vlan_config(adapter, adapter->if_handle, - NULL, 0, 1, 1); + dev_warn(&adapter->pdev->dev, "Exhausted VLAN HW filters.\n"); + + status = be_cmd_rx_filter(adapter, BE_FLAGS_VLAN_PROMISC, ON); + if (!status) { + dev_info(&adapter->pdev->dev, "Enable VLAN Promiscuous mode\n"); + dev_info(&adapter->pdev->dev, "Disabling HW VLAN filtering\n"); + adapter->flags |= BE_FLAGS_VLAN_PROMISC; + } else + dev_err(&adapter->pdev->dev, + "Failed to enable VLAN Promiscuous mode.\n"); return status; } From 1aa9673c209e5701d7226e9389349b53fa560536 Mon Sep 17 00:00:00 2001 From: Ajit Khaparde Date: Fri, 27 Sep 2013 15:18:16 -0500 Subject: [PATCH 336/523] be2net: Fix number of VLANs supported in UMC mode for BE3-R. In BE3-R, when UMC is enabled, the number of VLANs that can be added to the interface is reduced to 15. Signed-off-by: Ajit Khaparde Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be.h | 1 + drivers/net/ethernet/emulex/benet/be_main.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index 95d303d2da94..db020230bd0b 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -88,6 +88,7 @@ static inline char *nic_name(struct pci_dev *pdev) #define BE_MIN_MTU 256 #define BE_NUM_VLANS_SUPPORTED 64 +#define BE_UMC_NUM_VLANS_SUPPORTED 15 #define BE_MAX_EQD 96u #define BE_MAX_TX_FRAG_COUNT 30 diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 036f5830fee4..2962d2ff9f1c 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -2985,6 +2985,8 @@ static void BEx_get_resources(struct be_adapter *adapter, if (adapter->function_mode & FLEX10_MODE) res->max_vlans = BE_NUM_VLANS_SUPPORTED/8; + else if (adapter->function_mode & UMC_ENABLED) + res->max_vlans = BE_UMC_NUM_VLANS_SUPPORTED; else res->max_vlans = BE_NUM_VLANS_SUPPORTED; res->max_mcast_mac = BE_MAX_MC; From 45c459739e849b5a26a4b9a552460b1e601a32fc Mon Sep 17 00:00:00 2001 From: Ajit Khaparde Date: Fri, 27 Sep 2013 15:18:28 -0500 Subject: [PATCH 337/523] be2net: Fix to allow VLAN configuration on VF interfaces. Now the VF interfaces have privilege to add VLANs. Allow VLANs to be configured on these interfaces. Signed-off-by: Ajit Khaparde Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be_main.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 2962d2ff9f1c..9c25607e5f58 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -1055,10 +1055,6 @@ static int be_vlan_add_vid(struct net_device *netdev, __be16 proto, u16 vid) struct be_adapter *adapter = netdev_priv(netdev); int status = 0; - if (!lancer_chip(adapter) && !be_physfn(adapter)) { - status = -EINVAL; - goto ret; - } /* Packets with VID 0 are always received by Lancer by default */ if (lancer_chip(adapter) && vid == 0) @@ -1081,11 +1077,6 @@ static int be_vlan_rem_vid(struct net_device *netdev, __be16 proto, u16 vid) struct be_adapter *adapter = netdev_priv(netdev); int status = 0; - if (!lancer_chip(adapter) && !be_physfn(adapter)) { - status = -EINVAL; - goto ret; - } - /* Packets with VID 0 are always received by Lancer by default */ if (lancer_chip(adapter) && vid == 0) goto ret; From b9fc0e53b093ed74268c25731e4b9ac9cf2db5f1 Mon Sep 17 00:00:00 2001 From: Ajit Khaparde Date: Fri, 27 Sep 2013 15:18:46 -0500 Subject: [PATCH 338/523] be2net: Fix to configure VLAN priority for a VF interface. Thix fix allows the VLAN priority to be configured for a VF interface via the "ip link set DEVICE vf NUM" path. Signed-off-by: Ajit Khaparde Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be_main.c | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 9c25607e5f58..ad593cabeed3 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -1212,28 +1212,29 @@ static int be_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos) { struct be_adapter *adapter = netdev_priv(netdev); + struct be_vf_cfg *vf_cfg = &adapter->vf_cfg[vf]; int status = 0; if (!sriov_enabled(adapter)) return -EPERM; - if (vf >= adapter->num_vfs || vlan > 4095) + if (vf >= adapter->num_vfs || vlan > 4095 || qos > 7) return -EINVAL; - if (vlan) { - if (adapter->vf_cfg[vf].vlan_tag != vlan) { + if (vlan || qos) { + vlan |= qos << VLAN_PRIO_SHIFT; + if (vf_cfg->vlan_tag != vlan) { /* If this is new value, program it. Else skip. */ - adapter->vf_cfg[vf].vlan_tag = vlan; - - status = be_cmd_set_hsw_config(adapter, vlan, - vf + 1, adapter->vf_cfg[vf].if_handle, 0); + vf_cfg->vlan_tag = vlan; + status = be_cmd_set_hsw_config(adapter, vlan, vf + 1, + vf_cfg->if_handle, 0); } } else { /* Reset Transparent Vlan Tagging. */ - adapter->vf_cfg[vf].vlan_tag = 0; - vlan = adapter->vf_cfg[vf].def_vid; + vf_cfg->vlan_tag = 0; + vlan = vf_cfg->def_vid; status = be_cmd_set_hsw_config(adapter, vlan, vf + 1, - adapter->vf_cfg[vf].if_handle, 0); + vf_cfg->if_handle, 0); } From a60b3a13ab2b5823bd66c7fa14e3f88753479e35 Mon Sep 17 00:00:00 2001 From: Ajit Khaparde Date: Fri, 27 Sep 2013 15:18:56 -0500 Subject: [PATCH 339/523] be2net: Fix to display the VLAN priority for a VF VLAN priority is not being displayed for a VF currently when user executes "ip link show" command. This patch fixes it. Signed-off-by: Ajit Khaparde Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index ad593cabeed3..2c38cc402119 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -1201,8 +1201,8 @@ static int be_get_vf_config(struct net_device *netdev, int vf, vi->vf = vf; vi->tx_rate = vf_cfg->tx_rate; - vi->vlan = vf_cfg->vlan_tag; - vi->qos = 0; + vi->vlan = vf_cfg->vlan_tag & VLAN_VID_MASK; + vi->qos = vf_cfg->vlan_tag >> VLAN_PRIO_SHIFT; memcpy(&vi->mac, vf_cfg->mac_addr, ETH_ALEN); return 0; From 6645161513b90823ddc787f5763d8dbea7d40c8c Mon Sep 17 00:00:00 2001 From: Sucheta Chakraborty Date: Fri, 27 Sep 2013 02:12:36 -0400 Subject: [PATCH 340/523] qlcnic: Fix register device in FAILED state for 82xx. o Commit 7e2cf4feba058476324dc545e3d1b316998c91e6 ("qlcnic: change driver hardware interface mechanism") has overwritten commit b43e5ee76a4320c070cf0fe65cf4927198fbb4d1 ("qlcnic: Register device in FAILED state") Signed-off-by: Sucheta Chakraborty Signed-off-by: David S. Miller --- .../ethernet/qlogic/qlcnic/qlcnic_ethtool.c | 8 ++++ .../net/ethernet/qlogic/qlcnic/qlcnic_main.c | 39 ++++++++++++++++++- .../net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c | 12 ++++++ 3 files changed, 57 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c index 4d7ad0074d1c..ebe4c86e5230 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c @@ -1794,3 +1794,11 @@ const struct ethtool_ops qlcnic_sriov_vf_ethtool_ops = { .set_msglevel = qlcnic_set_msglevel, .get_msglevel = qlcnic_get_msglevel, }; + +const struct ethtool_ops qlcnic_ethtool_failed_ops = { + .get_settings = qlcnic_get_settings, + .get_drvinfo = qlcnic_get_drvinfo, + .set_msglevel = qlcnic_set_msglevel, + .get_msglevel = qlcnic_get_msglevel, + .set_dump = qlcnic_set_dump, +}; diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c index c4c5023e1fdf..21d00a0449a1 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c @@ -431,6 +431,9 @@ static void qlcnic_82xx_cancel_idc_work(struct qlcnic_adapter *adapter) while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) usleep_range(10000, 11000); + if (!adapter->fw_work.work.func) + return; + cancel_delayed_work_sync(&adapter->fw_work); } @@ -2275,8 +2278,9 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) adapter->portnum = adapter->ahw->pci_func; err = qlcnic_start_firmware(adapter); if (err) { - dev_err(&pdev->dev, "Loading fw failed.Please Reboot\n"); - goto err_out_free_hw; + dev_err(&pdev->dev, "Loading fw failed.Please Reboot\n" + "\t\tIf reboot doesn't help, try flashing the card\n"); + goto err_out_maintenance_mode; } qlcnic_get_multiq_capability(adapter); @@ -2408,6 +2412,22 @@ err_out_disable_pdev: pci_set_drvdata(pdev, NULL); pci_disable_device(pdev); return err; + +err_out_maintenance_mode: + netdev->netdev_ops = &qlcnic_netdev_failed_ops; + SET_ETHTOOL_OPS(netdev, &qlcnic_ethtool_failed_ops); + err = register_netdev(netdev); + + if (err) { + dev_err(&pdev->dev, "Failed to register net device\n"); + qlcnic_clr_all_drv_state(adapter, 0); + goto err_out_free_hw; + } + + pci_set_drvdata(pdev, adapter); + qlcnic_add_sysfs(adapter); + + return 0; } static void qlcnic_remove(struct pci_dev *pdev) @@ -2518,8 +2538,16 @@ static int qlcnic_resume(struct pci_dev *pdev) static int qlcnic_open(struct net_device *netdev) { struct qlcnic_adapter *adapter = netdev_priv(netdev); + u32 state; int err; + state = QLC_SHARED_REG_RD32(adapter, QLCNIC_CRB_DEV_STATE); + if (state == QLCNIC_DEV_FAILED || state == QLCNIC_DEV_BADBAD) { + netdev_err(netdev, "%s: Device is in FAILED state\n", __func__); + + return -EIO; + } + netif_carrier_off(netdev); err = qlcnic_attach(adapter); @@ -3228,6 +3256,13 @@ void qlcnic_82xx_dev_request_reset(struct qlcnic_adapter *adapter, u32 key) return; state = QLC_SHARED_REG_RD32(adapter, QLCNIC_CRB_DEV_STATE); + if (state == QLCNIC_DEV_FAILED || state == QLCNIC_DEV_BADBAD) { + netdev_err(adapter->netdev, "%s: Device is in FAILED state\n", + __func__); + qlcnic_api_unlock(adapter); + + return; + } if (state == QLCNIC_DEV_READY) { QLC_SHARED_REG_WR32(adapter, QLCNIC_CRB_DEV_STATE, diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c index c6165d05cc13..019f4377307f 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sysfs.c @@ -1272,6 +1272,7 @@ void qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter) void qlcnic_create_diag_entries(struct qlcnic_adapter *adapter) { struct device *dev = &adapter->pdev->dev; + u32 state; if (device_create_bin_file(dev, &bin_attr_port_stats)) dev_info(dev, "failed to create port stats sysfs entry"); @@ -1285,8 +1286,13 @@ void qlcnic_create_diag_entries(struct qlcnic_adapter *adapter) if (device_create_bin_file(dev, &bin_attr_mem)) dev_info(dev, "failed to create mem sysfs entry\n"); + state = QLC_SHARED_REG_RD32(adapter, QLCNIC_CRB_DEV_STATE); + if (state == QLCNIC_DEV_FAILED || state == QLCNIC_DEV_BADBAD) + return; + if (device_create_bin_file(dev, &bin_attr_pci_config)) dev_info(dev, "failed to create pci config sysfs entry"); + if (device_create_file(dev, &dev_attr_beacon)) dev_info(dev, "failed to create beacon sysfs entry"); @@ -1307,6 +1313,7 @@ void qlcnic_create_diag_entries(struct qlcnic_adapter *adapter) void qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter) { struct device *dev = &adapter->pdev->dev; + u32 state; device_remove_bin_file(dev, &bin_attr_port_stats); @@ -1315,6 +1322,11 @@ void qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter) device_remove_file(dev, &dev_attr_diag_mode); device_remove_bin_file(dev, &bin_attr_crb); device_remove_bin_file(dev, &bin_attr_mem); + + state = QLC_SHARED_REG_RD32(adapter, QLCNIC_CRB_DEV_STATE); + if (state == QLCNIC_DEV_FAILED || state == QLCNIC_DEV_BADBAD) + return; + device_remove_bin_file(dev, &bin_attr_pci_config); device_remove_file(dev, &dev_attr_beacon); if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED)) From 083986e8248d978b6c961d3da6beb0c921c68220 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Sat, 28 Sep 2013 11:23:59 +0200 Subject: [PATCH 341/523] mutex: replace CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX with simple ifdef Linus suggested to replace #ifndef CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX #define arch_mutex_cpu_relax() cpu_relax() #endif with just a simple #ifndef arch_mutex_cpu_relax # define arch_mutex_cpu_relax() cpu_relax() #endif to get rid of CONFIG_HAVE_CPU_RELAX_SIMPLE. So architectures can simply define arch_mutex_cpu_relax if they want an architecture specific function instead of having to add a select statement in their Kconfig in addition. Suggested-by: Linus Torvalds Signed-off-by: Heiko Carstens --- arch/Kconfig | 3 --- arch/s390/Kconfig | 1 - arch/s390/include/asm/mutex.h | 2 -- arch/s390/include/asm/processor.h | 2 ++ include/linux/mutex.h | 6 +++--- 5 files changed, 5 insertions(+), 9 deletions(-) diff --git a/arch/Kconfig b/arch/Kconfig index 1feb169274fe..af2cc6eabcc7 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -286,9 +286,6 @@ config HAVE_PERF_USER_STACK_DUMP config HAVE_ARCH_JUMP_LABEL bool -config HAVE_ARCH_MUTEX_CPU_RELAX - bool - config HAVE_RCU_TABLE_FREE bool diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index dcc6ac2d8026..d3fa84070b82 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -102,7 +102,6 @@ config S390 select GENERIC_TIME_VSYSCALL_OLD select HAVE_ALIGNED_STRUCT_PAGE if SLUB select HAVE_ARCH_JUMP_LABEL if !MARCH_G5 - select HAVE_ARCH_MUTEX_CPU_RELAX select HAVE_ARCH_SECCOMP_FILTER select HAVE_ARCH_TRACEHOOK select HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT diff --git a/arch/s390/include/asm/mutex.h b/arch/s390/include/asm/mutex.h index 688271f5f2e4..458c1f7fbc18 100644 --- a/arch/s390/include/asm/mutex.h +++ b/arch/s390/include/asm/mutex.h @@ -7,5 +7,3 @@ */ #include - -#define arch_mutex_cpu_relax() barrier() diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index 0eb37505cab1..ca7821f07260 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -198,6 +198,8 @@ static inline void cpu_relax(void) barrier(); } +#define arch_mutex_cpu_relax() barrier() + static inline void psw_set_key(unsigned int key) { asm volatile("spka 0(%0)" : : "d" (key)); diff --git a/include/linux/mutex.h b/include/linux/mutex.h index ccd4260834c5..bab49da8a0f0 100644 --- a/include/linux/mutex.h +++ b/include/linux/mutex.h @@ -15,8 +15,8 @@ #include #include #include - #include +#include /* * Simple, straightforward mutexes with strict semantics: @@ -175,8 +175,8 @@ extern void mutex_unlock(struct mutex *lock); extern int atomic_dec_and_mutex_lock(atomic_t *cnt, struct mutex *lock); -#ifndef CONFIG_HAVE_ARCH_MUTEX_CPU_RELAX -#define arch_mutex_cpu_relax() cpu_relax() +#ifndef arch_mutex_cpu_relax +# define arch_mutex_cpu_relax() cpu_relax() #endif #endif From 491f6f8e5fd9a57aaf03b6d6e3e153f1c27d8a46 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Mon, 23 Sep 2013 12:59:56 +0200 Subject: [PATCH 342/523] lockref: use arch_mutex_cpu_relax() in CMPXCHG_LOOP() Make use of arch_mutex_cpu_relax() so architectures can override the default cpu_relax() semantics. This is especially useful for s390, where cpu_relax() means that we yield() the current (virtual) cpu and therefore is very expensive, and would contradict the whole purpose of the lockless cmpxchg loop. Signed-off-by: Heiko Carstens --- lib/lockref.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/lib/lockref.c b/lib/lockref.c index e294ae445c9a..6f9d434c1521 100644 --- a/lib/lockref.c +++ b/lib/lockref.c @@ -11,6 +11,14 @@ # define cmpxchg64_relaxed cmpxchg64 #endif +/* + * Allow architectures to override the default cpu_relax() within CMPXCHG_LOOP. + * This is useful for architectures with an expensive cpu_relax(). + */ +#ifndef arch_mutex_cpu_relax +# define arch_mutex_cpu_relax() cpu_relax() +#endif + /* * Note that the "cmpxchg()" reloads the "old" value for the * failure case. @@ -28,7 +36,7 @@ if (likely(old.lock_count == prev.lock_count)) { \ SUCCESS; \ } \ - cpu_relax(); \ + arch_mutex_cpu_relax(); \ } \ } while (0) From efc1d23b3d9af8cbff9f26677d67fb9c1b9cb792 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Thu, 5 Sep 2013 13:26:17 +0200 Subject: [PATCH 343/523] s390: enable ARCH_USE_CMPXCHG_LOCKREF Enable ARCH_USE_CMPXCHG_LOCKREF since it shows performance improvements with Linus' simple stat() test case of up to 50% on a 30 cpu system. Signed-off-by: Heiko Carstens --- arch/s390/Kconfig | 1 + arch/s390/include/asm/spinlock.h | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index d3fa84070b82..7143793859fa 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -93,6 +93,7 @@ config S390 select ARCH_INLINE_WRITE_UNLOCK_IRQ select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE select ARCH_SAVE_PAGE_KEYS if HIBERNATION + select ARCH_USE_CMPXCHG_LOCKREF select ARCH_WANT_IPC_PARSE_VERSION select BUILDTIME_EXTABLE_SORT select CLONE_BACKWARDS2 diff --git a/arch/s390/include/asm/spinlock.h b/arch/s390/include/asm/spinlock.h index 701fe8c59e1f..83e5d216105e 100644 --- a/arch/s390/include/asm/spinlock.h +++ b/arch/s390/include/asm/spinlock.h @@ -44,6 +44,11 @@ extern void arch_spin_lock_wait_flags(arch_spinlock_t *, unsigned long flags); extern int arch_spin_trylock_retry(arch_spinlock_t *); extern void arch_spin_relax(arch_spinlock_t *lock); +static inline int arch_spin_value_unlocked(arch_spinlock_t lock) +{ + return lock.owner_cpu == 0; +} + static inline void arch_spin_lock(arch_spinlock_t *lp) { int old; From d3789c3ee2e2b7e8c9b6043e9e8715d6d1e80299 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Tue, 24 Sep 2013 12:49:00 +0100 Subject: [PATCH 344/523] iio: amplifiers: ad8366: Remove regulator_put Since devm_regulator_get is used, regulator_put should not be used. Remove it. Signed-off-by: Sachin Kamat Signed-off-by: Jonathan Cameron --- drivers/iio/amplifiers/ad8366.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/iio/amplifiers/ad8366.c b/drivers/iio/amplifiers/ad8366.c index d0a79a4bce1c..ba6f6a91dfff 100644 --- a/drivers/iio/amplifiers/ad8366.c +++ b/drivers/iio/amplifiers/ad8366.c @@ -185,10 +185,8 @@ static int ad8366_remove(struct spi_device *spi) iio_device_unregister(indio_dev); - if (!IS_ERR(reg)) { + if (!IS_ERR(reg)) regulator_disable(reg); - regulator_put(reg); - } return 0; } From e4826a94c7444698725572f3def3686fb3f38d6d Mon Sep 17 00:00:00 2001 From: Thomas Meyer Date: Mon, 16 Sep 2013 23:19:54 +0200 Subject: [PATCH 345/523] drm/msm: Odd PTR_ERR usage The variable priv->kms is not initialized yet. Found by "scripts/coccinelle/tests/odd_ptr_err.cocci". PTR_ERR should access the value just tested by IS_ERR. Signed-off-by: Thomas Meyer --- drivers/gpu/drm/msm/msm_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 008d772384c7..fe03f9c26092 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -199,7 +199,7 @@ static int msm_load(struct drm_device *dev, unsigned long flags) * imx drm driver on iMX5 */ dev_err(dev->dev, "failed to load kms\n"); - ret = PTR_ERR(priv->kms); + ret = PTR_ERR(kms); goto fail; } From c55d1c41df68afaaf717850d735916ce3b355b77 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Wed, 25 Sep 2013 16:49:40 +0200 Subject: [PATCH 346/523] drm/msm: Remove iommu include from mdp4_kms.c The include file has been removed and the file does not need it anyway, so remove it. Fixes a compile error. Signed-off-by: Joerg Roedel Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/mdp4/mdp4_kms.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/gpu/drm/msm/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/mdp4/mdp4_kms.c index 5db5bbaedae2..bc7fd11ad8be 100644 --- a/drivers/gpu/drm/msm/mdp4/mdp4_kms.c +++ b/drivers/gpu/drm/msm/mdp4/mdp4_kms.c @@ -19,8 +19,6 @@ #include "msm_drv.h" #include "mdp4_kms.h" -#include - static struct mdp4_platform_config *mdp4_get_config(struct platform_device *dev); static int mdp4_hw_init(struct msm_kms *kms) From 8a3da6c7d0031fcb6a0d17f9c7a68b0e01f52855 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Sat, 28 Sep 2013 15:48:48 +0200 Subject: [PATCH 347/523] perf/x86: Fix PMU detection printout when no PMU is detected Ran into this cryptic PMU bootup log recently: [ 0.124047] Performance Events: [ 0.125000] smpboot: ... Turns out we print this if no PMU is detected. Fall back to the right condition so that the following is printed: [ 0.122381] Performance Events: no PMU driver, software events only. Cc: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Link: http://lkml.kernel.org/n/tip-u2fwaUffakjp0qkpRfqljgsn@git.kernel.org Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/perf_event.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index a9c606bb4945..897783b3302a 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -1506,7 +1506,7 @@ static int __init init_hw_perf_events(void) err = amd_pmu_init(); break; default: - return 0; + err = -ENOTSUPP; } if (err != 0) { pr_cont("no PMU driver, software events only.\n"); From 33b559630cf4345f2eeda849efd9b8548b192706 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Sat, 28 Sep 2013 10:07:06 -0400 Subject: [PATCH 348/523] drm/msm: deal with mach/iommu.h removal We still need an API exported by msm iommu driver (but not visible in any public header anymore). For now, just declare the prototype ourselves, but when msm iommu driver provides a better option, use that instead. Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_drv.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index fe03f9c26092..9c871b554365 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -18,8 +18,6 @@ #include "msm_drv.h" #include "msm_gpu.h" -#include - static void msm_fb_output_poll_changed(struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; @@ -62,6 +60,8 @@ int msm_iommu_attach(struct drm_device *dev, struct iommu_domain *iommu, int i, ret; for (i = 0; i < cnt; i++) { + /* TODO maybe some day msm iommu won't require this hack: */ + struct device *msm_iommu_get_ctx(const char *ctx_name); struct device *ctx = msm_iommu_get_ctx(names[i]); if (!ctx) continue; From 30600a9092dc44694fbb4d0c3fa796e977fd5c96 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Sat, 28 Sep 2013 10:13:04 -0400 Subject: [PATCH 349/523] drm/msm: use drm_gem_dumb_destroy helper Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_drv.c | 2 +- drivers/gpu/drm/msm/msm_gem.c | 7 ------- 2 files changed, 1 insertion(+), 8 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 9c871b554365..b3a2f1629041 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -697,7 +697,7 @@ static struct drm_driver msm_driver = { .gem_vm_ops = &vm_ops, .dumb_create = msm_gem_dumb_create, .dumb_map_offset = msm_gem_dumb_map_offset, - .dumb_destroy = msm_gem_dumb_destroy, + .dumb_destroy = drm_gem_dumb_destroy, #ifdef CONFIG_DEBUG_FS .debugfs_init = msm_debugfs_init, .debugfs_cleanup = msm_debugfs_cleanup, diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index 29eacfa29cfb..2bae46c66a30 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -319,13 +319,6 @@ int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, MSM_BO_SCANOUT | MSM_BO_WC, &args->handle); } -int msm_gem_dumb_destroy(struct drm_file *file, struct drm_device *dev, - uint32_t handle) -{ - /* No special work needed, drop the reference and see what falls out */ - return drm_gem_handle_delete(file, handle); -} - int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, uint32_t handle, uint64_t *offset) { From bf4169100c909667ede6af67668b3ecce6928343 Mon Sep 17 00:00:00 2001 From: James Ralston Date: Tue, 24 Sep 2013 16:47:55 -0700 Subject: [PATCH 350/523] i2c: ismt: initialize DMA buffer This patch adds code to initialize the DMA buffer to compensate for possible hardware data corruption. Signed-off-by: James Ralston [wsa: changed to use 'sizeof'] Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-ismt.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/i2c/busses/i2c-ismt.c b/drivers/i2c/busses/i2c-ismt.c index 8ed79a086f85..1672effbcebb 100644 --- a/drivers/i2c/busses/i2c-ismt.c +++ b/drivers/i2c/busses/i2c-ismt.c @@ -393,6 +393,9 @@ static int ismt_access(struct i2c_adapter *adap, u16 addr, desc = &priv->hw[priv->head]; + /* Initialize the DMA buffer */ + memset(priv->dma_buffer, 0, sizeof(priv->dma_buffer)); + /* Initialize the descriptor */ memset(desc, 0, sizeof(struct ismt_desc)); desc->tgtaddr_rw = ISMT_DESC_ADDR_RW(addr, read_write); From 3a126f85e015701e56240884f27f97543580d5f7 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Fri, 27 Sep 2013 13:17:39 -0700 Subject: [PATCH 351/523] kernel/params: fix handling of signed integer types Commit 6072ddc8520b ("kernel: replace strict_strto*() with kstrto*()") broke the handling of signed integer types, fix it. Signed-off-by: Jean Delvare Reported-by: Christian Kujau Tested-by: Christian Kujau Cc: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/params.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/kernel/params.c b/kernel/params.c index 81c4e78c8f4c..c00d5b502aa4 100644 --- a/kernel/params.c +++ b/kernel/params.c @@ -254,11 +254,11 @@ int parse_args(const char *doing, STANDARD_PARAM_DEF(byte, unsigned char, "%hhu", unsigned long, kstrtoul); -STANDARD_PARAM_DEF(short, short, "%hi", long, kstrtoul); +STANDARD_PARAM_DEF(short, short, "%hi", long, kstrtol); STANDARD_PARAM_DEF(ushort, unsigned short, "%hu", unsigned long, kstrtoul); -STANDARD_PARAM_DEF(int, int, "%i", long, kstrtoul); +STANDARD_PARAM_DEF(int, int, "%i", long, kstrtol); STANDARD_PARAM_DEF(uint, unsigned int, "%u", unsigned long, kstrtoul); -STANDARD_PARAM_DEF(long, long, "%li", long, kstrtoul); +STANDARD_PARAM_DEF(long, long, "%li", long, kstrtol); STANDARD_PARAM_DEF(ulong, unsigned long, "%lu", unsigned long, kstrtoul); int param_set_charp(const char *val, const struct kernel_param *kp) From 60e453a940ac678565b6641d65f8c18541bb9f28 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Mon, 23 Sep 2013 20:59:35 +0800 Subject: [PATCH 352/523] USBNET: fix handling padding packet Commit 638c5115a7949(USBNET: support DMA SG) introduces DMA SG if the usb host controller is capable of building packet from discontinuous buffers, but missed handling padding packet when building DMA SG. This patch attachs the pre-allocated padding packet at the end of the sg list, so padding packet can be sent to device if drivers require that. Reported-by: David Laight Acked-by: Oliver Neukum Signed-off-by: Ming Lei Signed-off-by: David S. Miller --- drivers/net/usb/usbnet.c | 27 +++++++++++++++++++++------ include/linux/usb/usbnet.h | 1 + 2 files changed, 22 insertions(+), 6 deletions(-) diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c index 7b331e613e02..bf94e10a37c8 100644 --- a/drivers/net/usb/usbnet.c +++ b/drivers/net/usb/usbnet.c @@ -1241,7 +1241,9 @@ static int build_dma_sg(const struct sk_buff *skb, struct urb *urb) if (num_sgs == 1) return 0; - urb->sg = kmalloc(num_sgs * sizeof(struct scatterlist), GFP_ATOMIC); + /* reserve one for zero packet */ + urb->sg = kmalloc((num_sgs + 1) * sizeof(struct scatterlist), + GFP_ATOMIC); if (!urb->sg) return -ENOMEM; @@ -1305,7 +1307,7 @@ netdev_tx_t usbnet_start_xmit (struct sk_buff *skb, if (build_dma_sg(skb, urb) < 0) goto drop; } - entry->length = length = urb->transfer_buffer_length; + length = urb->transfer_buffer_length; /* don't assume the hardware handles USB_ZERO_PACKET * NOTE: strictly conforming cdc-ether devices should expect @@ -1317,15 +1319,18 @@ netdev_tx_t usbnet_start_xmit (struct sk_buff *skb, if (length % dev->maxpacket == 0) { if (!(info->flags & FLAG_SEND_ZLP)) { if (!(info->flags & FLAG_MULTI_PACKET)) { - urb->transfer_buffer_length++; - if (skb_tailroom(skb)) { + length++; + if (skb_tailroom(skb) && !urb->num_sgs) { skb->data[skb->len] = 0; __skb_put(skb, 1); - } + } else if (urb->num_sgs) + sg_set_buf(&urb->sg[urb->num_sgs++], + dev->padding_pkt, 1); } } else urb->transfer_flags |= URB_ZERO_PACKET; } + entry->length = urb->transfer_buffer_length = length; spin_lock_irqsave(&dev->txq.lock, flags); retval = usb_autopm_get_interface_async(dev->intf); @@ -1509,6 +1514,7 @@ void usbnet_disconnect (struct usb_interface *intf) usb_kill_urb(dev->interrupt); usb_free_urb(dev->interrupt); + kfree(dev->padding_pkt); free_netdev(net); } @@ -1679,9 +1685,16 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod) /* initialize max rx_qlen and tx_qlen */ usbnet_update_max_qlen(dev); + if (dev->can_dma_sg && !(info->flags & FLAG_SEND_ZLP) && + !(info->flags & FLAG_MULTI_PACKET)) { + dev->padding_pkt = kzalloc(1, GFP_KERNEL); + if (!dev->padding_pkt) + goto out4; + } + status = register_netdev (net); if (status) - goto out4; + goto out5; netif_info(dev, probe, dev->net, "register '%s' at usb-%s-%s, %s, %pM\n", udev->dev.driver->name, @@ -1699,6 +1712,8 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod) return 0; +out5: + kfree(dev->padding_pkt); out4: usb_free_urb(dev->interrupt); out3: diff --git a/include/linux/usb/usbnet.h b/include/linux/usb/usbnet.h index 9cb2fe8ca944..e303eef94dd5 100644 --- a/include/linux/usb/usbnet.h +++ b/include/linux/usb/usbnet.h @@ -42,6 +42,7 @@ struct usbnet { struct usb_host_endpoint *status; unsigned maxpacket; struct timer_list delay; + const char *padding_pkt; /* protocol/interface state */ struct net_device *net; From 7df37ff33dc122f7bd0614d707939fe84322d264 Mon Sep 17 00:00:00 2001 From: "Catalin\\(ux\\) M. BOIE" Date: Mon, 23 Sep 2013 23:04:19 +0300 Subject: [PATCH 353/523] IPv6 NAT: Do not drop DNATed 6to4/6rd packets When a router is doing DNAT for 6to4/6rd packets the latest anti-spoofing commit 218774dc ("ipv6: add anti-spoofing checks for 6to4 and 6rd") will drop them because the IPv6 address embedded does not match the IPv4 destination. This patch will allow them to pass by testing if we have an address that matches on 6to4/6rd interface. I have been hit by this problem using Fedora and IPV6TO4_IPV4ADDR. Also, log the dropped packets (with rate limit). Signed-off-by: Catalin(ux) M. BOIE Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- include/net/addrconf.h | 4 ++ net/ipv6/addrconf.c | 27 ++++++++++++++ net/ipv6/sit.c | 84 ++++++++++++++++++++++++++++++++++-------- 3 files changed, 100 insertions(+), 15 deletions(-) diff --git a/include/net/addrconf.h b/include/net/addrconf.h index fb314de2b61b..86505bfa5d2c 100644 --- a/include/net/addrconf.h +++ b/include/net/addrconf.h @@ -67,6 +67,10 @@ int ipv6_chk_addr(struct net *net, const struct in6_addr *addr, int ipv6_chk_home_addr(struct net *net, const struct in6_addr *addr); #endif +bool ipv6_chk_custom_prefix(const struct in6_addr *addr, + const unsigned int prefix_len, + struct net_device *dev); + int ipv6_chk_prefix(const struct in6_addr *addr, struct net_device *dev); struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index d6ff12617f36..a0c3abe72461 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -1499,6 +1499,33 @@ static bool ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr, return false; } +/* Compares an address/prefix_len with addresses on device @dev. + * If one is found it returns true. + */ +bool ipv6_chk_custom_prefix(const struct in6_addr *addr, + const unsigned int prefix_len, struct net_device *dev) +{ + struct inet6_dev *idev; + struct inet6_ifaddr *ifa; + bool ret = false; + + rcu_read_lock(); + idev = __in6_dev_get(dev); + if (idev) { + read_lock_bh(&idev->lock); + list_for_each_entry(ifa, &idev->addr_list, if_list) { + ret = ipv6_prefix_equal(addr, &ifa->addr, prefix_len); + if (ret) + break; + } + read_unlock_bh(&idev->lock); + } + rcu_read_unlock(); + + return ret; +} +EXPORT_SYMBOL(ipv6_chk_custom_prefix); + int ipv6_chk_prefix(const struct in6_addr *addr, struct net_device *dev) { struct inet6_dev *idev; diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 7ee5cb96db34..afd5605aea7c 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -566,6 +566,70 @@ static inline bool is_spoofed_6rd(struct ip_tunnel *tunnel, const __be32 v4addr, return false; } +/* Checks if an address matches an address on the tunnel interface. + * Used to detect the NAT of proto 41 packets and let them pass spoofing test. + * Long story: + * This function is called after we considered the packet as spoofed + * in is_spoofed_6rd. + * We may have a router that is doing NAT for proto 41 packets + * for an internal station. Destination a.a.a.a/PREFIX:bbbb:bbbb + * will be translated to n.n.n.n/PREFIX:bbbb:bbbb. And is_spoofed_6rd + * function will return true, dropping the packet. + * But, we can still check if is spoofed against the IP + * addresses associated with the interface. + */ +static bool only_dnatted(const struct ip_tunnel *tunnel, + const struct in6_addr *v6dst) +{ + int prefix_len; + +#ifdef CONFIG_IPV6_SIT_6RD + prefix_len = tunnel->ip6rd.prefixlen + 32 + - tunnel->ip6rd.relay_prefixlen; +#else + prefix_len = 48; +#endif + return ipv6_chk_custom_prefix(v6dst, prefix_len, tunnel->dev); +} + +/* Returns true if a packet is spoofed */ +static bool packet_is_spoofed(struct sk_buff *skb, + const struct iphdr *iph, + struct ip_tunnel *tunnel) +{ + const struct ipv6hdr *ipv6h; + + if (tunnel->dev->priv_flags & IFF_ISATAP) { + if (!isatap_chksrc(skb, iph, tunnel)) + return true; + + return false; + } + + if (tunnel->dev->flags & IFF_POINTOPOINT) + return false; + + ipv6h = ipv6_hdr(skb); + + if (unlikely(is_spoofed_6rd(tunnel, iph->saddr, &ipv6h->saddr))) { + net_warn_ratelimited("Src spoofed %pI4/%pI6c -> %pI4/%pI6c\n", + &iph->saddr, &ipv6h->saddr, + &iph->daddr, &ipv6h->daddr); + return true; + } + + if (likely(!is_spoofed_6rd(tunnel, iph->daddr, &ipv6h->daddr))) + return false; + + if (only_dnatted(tunnel, &ipv6h->daddr)) + return false; + + net_warn_ratelimited("Dst spoofed %pI4/%pI6c -> %pI4/%pI6c\n", + &iph->saddr, &ipv6h->saddr, + &iph->daddr, &ipv6h->daddr); + return true; +} + static int ipip6_rcv(struct sk_buff *skb) { const struct iphdr *iph = ip_hdr(skb); @@ -586,19 +650,9 @@ static int ipip6_rcv(struct sk_buff *skb) IPCB(skb)->flags = 0; skb->protocol = htons(ETH_P_IPV6); - if (tunnel->dev->priv_flags & IFF_ISATAP) { - if (!isatap_chksrc(skb, iph, tunnel)) { - tunnel->dev->stats.rx_errors++; - goto out; - } - } else if (!(tunnel->dev->flags&IFF_POINTOPOINT)) { - if (is_spoofed_6rd(tunnel, iph->saddr, - &ipv6_hdr(skb)->saddr) || - is_spoofed_6rd(tunnel, iph->daddr, - &ipv6_hdr(skb)->daddr)) { - tunnel->dev->stats.rx_errors++; - goto out; - } + if (packet_is_spoofed(skb, iph, tunnel)) { + tunnel->dev->stats.rx_errors++; + goto out; } __skb_tunnel_rx(skb, tunnel->dev, tunnel->net); @@ -748,7 +802,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb, neigh = dst_neigh_lookup(skb_dst(skb), &iph6->daddr); if (neigh == NULL) { - net_dbg_ratelimited("sit: nexthop == NULL\n"); + net_dbg_ratelimited("nexthop == NULL\n"); goto tx_error; } @@ -777,7 +831,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb, neigh = dst_neigh_lookup(skb_dst(skb), &iph6->daddr); if (neigh == NULL) { - net_dbg_ratelimited("sit: nexthop == NULL\n"); + net_dbg_ratelimited("nexthop == NULL\n"); goto tx_error; } From f41f064cf4352e6a7fd982f1de8a690897702513 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Sat, 28 Sep 2013 13:13:07 -0700 Subject: [PATCH 354/523] PCI: Workaround missing pci_set_master in pci drivers Ben Herrenschmidt found that commit 928bea964827 ("PCI: Delay enabling bridges until they're needed") breaks PCI in some powerpc environments. The reason is that the PCIe port driver will call pci_enable_device() on the bridge, so the device is enabled, but skips pci_set_master because pcie_port_auto and no acpi on powerpc. Because of that, pci_enable_bridge() later on (called as a result of the child device driver doing pci_enable_device) will see the bridge as already enabled and will not call pci_set_master() on it. Fixed by add checking in pci_enable_bridge, and call pci_set_master if driver skip that. That will make the code more robot and wade off problem for missing pci_set_master in drivers. Reported-by: Benjamin Herrenschmidt Signed-off-by: Yinghai Lu Signed-off-by: Linus Torvalds --- drivers/pci/pci.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index e8ccf6c0f08a..bdd64b1b4817 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1155,8 +1155,14 @@ static void pci_enable_bridge(struct pci_dev *dev) pci_enable_bridge(dev->bus->self); - if (pci_is_enabled(dev)) + if (pci_is_enabled(dev)) { + if (!dev->is_busmaster) { + dev_warn(&dev->dev, "driver skip pci_set_master, fix it!\n"); + pci_set_master(dev); + } return; + } + retval = pci_enable_device(dev); if (retval) dev_err(&dev->dev, "Error enabling bridge (%d), continuing\n", From 50624c934db18ab90aaea4908f60dd39aab4e6e5 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 23 Sep 2013 21:19:49 -0700 Subject: [PATCH 355/523] net: Delay default_device_exit_batch until no devices are unregistering v2 There is currently serialization network namespaces exiting and network devices exiting as the final part of netdev_run_todo does not happen under the rtnl_lock. This is compounded by the fact that the only list of devices unregistering in netdev_run_todo is local to the netdev_run_todo. This lack of serialization in extreme cases results in network devices unregistering in netdev_run_todo after the loopback device of their network namespace has been freed (making dst_ifdown unsafe), and after the their network namespace has exited (making the NETDEV_UNREGISTER, and NETDEV_UNREGISTER_FINAL callbacks unsafe). Add the missing serialization by a per network namespace count of how many network devices are unregistering and having a wait queue that is woken up whenever the count is decreased. The count and wait queue allow default_device_exit_batch to wait until all of the unregistration activity for a network namespace has finished before proceeding to unregister the loopback device and then allowing the network namespace to exit. Only a single global wait queue is used because there is a single global lock, and there is a single waiter, per network namespace wait queues would be a waste of resources. The per network namespace count of unregistering devices gives a progress guarantee because the number of network devices unregistering in an exiting network namespace must ultimately drop to zero (assuming network device unregistration completes). The basic logic remains the same as in v1. This patch is now half comment and half rtnl_lock_unregistering an expanded version of wait_event performs no extra work in the common case where no network devices are unregistering when we get to default_device_exit_batch. Reported-by: Francesco Ruggeri Signed-off-by: "Eric W. Biederman" Signed-off-by: David S. Miller --- include/net/net_namespace.h | 1 + net/core/dev.c | 49 ++++++++++++++++++++++++++++++++++++- 2 files changed, 49 insertions(+), 1 deletion(-) diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h index 1313456a0994..9d22f08896c6 100644 --- a/include/net/net_namespace.h +++ b/include/net/net_namespace.h @@ -74,6 +74,7 @@ struct net { struct hlist_head *dev_index_head; unsigned int dev_base_seq; /* protected by rtnl_mutex */ int ifindex; + unsigned int dev_unreg_count; /* core fib_rules */ struct list_head rules_ops; diff --git a/net/core/dev.c b/net/core/dev.c index 5c713f2239cc..65f829cfd928 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -5247,10 +5247,12 @@ static int dev_new_index(struct net *net) /* Delayed registration/unregisteration */ static LIST_HEAD(net_todo_list); +static DECLARE_WAIT_QUEUE_HEAD(netdev_unregistering_wq); static void net_set_todo(struct net_device *dev) { list_add_tail(&dev->todo_list, &net_todo_list); + dev_net(dev)->dev_unreg_count++; } static void rollback_registered_many(struct list_head *head) @@ -5918,6 +5920,12 @@ void netdev_run_todo(void) if (dev->destructor) dev->destructor(dev); + /* Report a network device has been unregistered */ + rtnl_lock(); + dev_net(dev)->dev_unreg_count--; + __rtnl_unlock(); + wake_up(&netdev_unregistering_wq); + /* Free network device */ kobject_put(&dev->dev.kobj); } @@ -6603,6 +6611,34 @@ static void __net_exit default_device_exit(struct net *net) rtnl_unlock(); } +static void __net_exit rtnl_lock_unregistering(struct list_head *net_list) +{ + /* Return with the rtnl_lock held when there are no network + * devices unregistering in any network namespace in net_list. + */ + struct net *net; + bool unregistering; + DEFINE_WAIT(wait); + + for (;;) { + prepare_to_wait(&netdev_unregistering_wq, &wait, + TASK_UNINTERRUPTIBLE); + unregistering = false; + rtnl_lock(); + list_for_each_entry(net, net_list, exit_list) { + if (net->dev_unreg_count > 0) { + unregistering = true; + break; + } + } + if (!unregistering) + break; + __rtnl_unlock(); + schedule(); + } + finish_wait(&netdev_unregistering_wq, &wait); +} + static void __net_exit default_device_exit_batch(struct list_head *net_list) { /* At exit all network devices most be removed from a network @@ -6614,7 +6650,18 @@ static void __net_exit default_device_exit_batch(struct list_head *net_list) struct net *net; LIST_HEAD(dev_kill_list); - rtnl_lock(); + /* To prevent network device cleanup code from dereferencing + * loopback devices or network devices that have been freed + * wait here for all pending unregistrations to complete, + * before unregistring the loopback device and allowing the + * network namespace be freed. + * + * The netdev todo list containing all network devices + * unregistrations that happen in default_device_exit_batch + * will run in the rtnl_unlock() at the end of + * default_device_exit_batch. + */ + rtnl_lock_unregistering(net_list); list_for_each_entry(net, net_list, exit_list) { for_each_netdev_reverse(net, dev) { if (dev->rtnl_link_ops) From 9a3bab6b05383f1e4c3716b3615500c51285959e Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 24 Sep 2013 06:19:57 -0700 Subject: [PATCH 356/523] net: net_secret should not depend on TCP A host might need net_secret[] and never open a single socket. Problem added in commit aebda156a570782 ("net: defer net_secret[] initialization") Based on prior patch from Hannes Frederic Sowa. Reported-by: Hannes Frederic Sowa Signed-off-by: Eric Dumazet Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- include/net/secure_seq.h | 1 - net/core/secure_seq.c | 27 ++++++++++++++++++++++++--- net/ipv4/af_inet.c | 4 +--- 3 files changed, 25 insertions(+), 7 deletions(-) diff --git a/include/net/secure_seq.h b/include/net/secure_seq.h index 6ca975bebd37..c2e542b27a5a 100644 --- a/include/net/secure_seq.h +++ b/include/net/secure_seq.h @@ -3,7 +3,6 @@ #include -extern void net_secret_init(void); extern __u32 secure_ip_id(__be32 daddr); extern __u32 secure_ipv6_id(const __be32 daddr[4]); extern u32 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport); diff --git a/net/core/secure_seq.c b/net/core/secure_seq.c index 6a2f13cee86a..3f1ec1586ae1 100644 --- a/net/core/secure_seq.c +++ b/net/core/secure_seq.c @@ -10,11 +10,24 @@ #include -static u32 net_secret[MD5_MESSAGE_BYTES / 4] ____cacheline_aligned; +#define NET_SECRET_SIZE (MD5_MESSAGE_BYTES / 4) -void net_secret_init(void) +static u32 net_secret[NET_SECRET_SIZE] ____cacheline_aligned; + +static void net_secret_init(void) { - get_random_bytes(net_secret, sizeof(net_secret)); + u32 tmp; + int i; + + if (likely(net_secret[0])) + return; + + for (i = NET_SECRET_SIZE; i > 0;) { + do { + get_random_bytes(&tmp, sizeof(tmp)); + } while (!tmp); + cmpxchg(&net_secret[--i], 0, tmp); + } } #ifdef CONFIG_INET @@ -42,6 +55,7 @@ __u32 secure_tcpv6_sequence_number(const __be32 *saddr, const __be32 *daddr, u32 hash[MD5_DIGEST_WORDS]; u32 i; + net_secret_init(); memcpy(hash, saddr, 16); for (i = 0; i < 4; i++) secret[i] = net_secret[i] + (__force u32)daddr[i]; @@ -63,6 +77,7 @@ u32 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr, u32 hash[MD5_DIGEST_WORDS]; u32 i; + net_secret_init(); memcpy(hash, saddr, 16); for (i = 0; i < 4; i++) secret[i] = net_secret[i] + (__force u32) daddr[i]; @@ -82,6 +97,7 @@ __u32 secure_ip_id(__be32 daddr) { u32 hash[MD5_DIGEST_WORDS]; + net_secret_init(); hash[0] = (__force __u32) daddr; hash[1] = net_secret[13]; hash[2] = net_secret[14]; @@ -96,6 +112,7 @@ __u32 secure_ipv6_id(const __be32 daddr[4]) { __u32 hash[4]; + net_secret_init(); memcpy(hash, daddr, 16); md5_transform(hash, net_secret); @@ -107,6 +124,7 @@ __u32 secure_tcp_sequence_number(__be32 saddr, __be32 daddr, { u32 hash[MD5_DIGEST_WORDS]; + net_secret_init(); hash[0] = (__force u32)saddr; hash[1] = (__force u32)daddr; hash[2] = ((__force u16)sport << 16) + (__force u16)dport; @@ -121,6 +139,7 @@ u32 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport) { u32 hash[MD5_DIGEST_WORDS]; + net_secret_init(); hash[0] = (__force u32)saddr; hash[1] = (__force u32)daddr; hash[2] = (__force u32)dport ^ net_secret[14]; @@ -140,6 +159,7 @@ u64 secure_dccp_sequence_number(__be32 saddr, __be32 daddr, u32 hash[MD5_DIGEST_WORDS]; u64 seq; + net_secret_init(); hash[0] = (__force u32)saddr; hash[1] = (__force u32)daddr; hash[2] = ((__force u16)sport << 16) + (__force u16)dport; @@ -164,6 +184,7 @@ u64 secure_dccpv6_sequence_number(__be32 *saddr, __be32 *daddr, u64 seq; u32 i; + net_secret_init(); memcpy(hash, saddr, 16); for (i = 0; i < 4; i++) secret[i] = net_secret[i] + daddr[i]; diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 7a1874b7b8fd..cfeb85cff4f0 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -263,10 +263,8 @@ void build_ehash_secret(void) get_random_bytes(&rnd, sizeof(rnd)); } while (rnd == 0); - if (cmpxchg(&inet_ehash_secret, 0, rnd) == 0) { + if (cmpxchg(&inet_ehash_secret, 0, rnd) == 0) get_random_bytes(&ipv6_hash_secret, sizeof(ipv6_hash_secret)); - net_secret_init(); - } } EXPORT_SYMBOL(build_ehash_secret); From 14951f22f1cc8375ead345d2ca08455e91f2152b Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Sun, 29 Sep 2013 16:12:54 +0200 Subject: [PATCH 357/523] Revert "perf symbols: Demangle cloned functions" This reverts commit de95ab53645a2f0015e0f68ee723f18dce2b8b51. Markus Trippelsdorf reported that this commit broke 'perf top': > I just see a gray screen with no text at all. Sometimes the > following error messages are printed: > > *** Error in `perf': invalid fastbin entry (free): 0x00000000029b18c0 > *** > *** Error in `perf': malloc(): memory corruption (fast): 0x0000000000ee0b10 *** While this code is fixable, the commit itself fails on several levels: - it should have been a separate helper function - why the heck does it do strchr() twice - it casts a const char * over into char * - sloppy style - it's not even a regression fix! So lets revert it and re-try the patch in v3.13. Reported-by: Markus Trippelsdorf Cc: Andi Kleen Cc: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Linus Torvalds Signed-off-by: Ingo Molnar --- tools/perf/util/symbol-elf.c | 27 +-------------------------- 1 file changed, 1 insertion(+), 26 deletions(-) diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index d2a888e2e058..a9c829be5216 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -928,33 +928,8 @@ int dso__load_sym(struct dso *dso, struct map *map, * to it... */ if (symbol_conf.demangle) { - /* - * The demangler doesn't deal with cloned functions. - * XXXX.clone.NUM or similar - * Strip the dot part and readd it later. - */ - char *p = (char *)elf_name, *dot; - dot = strchr(elf_name, '.'); - if (dot) { - p = strdup(elf_name); - if (!p) - goto new_symbol; - dot = strchr(p, '.'); - *dot = 0; - } - - demangled = bfd_demangle(NULL, p, + demangled = bfd_demangle(NULL, elf_name, DMGL_PARAMS | DMGL_ANSI); - if (dot) - *dot = '.'; - if (demangled && dot) { - demangled = realloc(demangled, strlen(demangled) + strlen(dot) + 1); - if (!demangled) - goto new_symbol; - strcpy(demangled + (dot - p), dot); - } - if (p != elf_name) - free(p); if (demangled != NULL) elf_name = demangled; } From 52b26a3e1bb3e065c32b3febdac1e1f117d88e15 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 26 Sep 2013 14:08:36 -0400 Subject: [PATCH 358/523] NFSv4.1: nfs4_fl_prepare_ds - fix bugs when the connect attempt fails - Fix an Oops when nfs4_ds_connect() returns an error. - Always check the device status after waiting for a connect to complete. Reported-by: Andy Adamson Reported-by: Jeff Layton Signed-off-by: Trond Myklebust Cc: # v3.10+ --- fs/nfs/nfs4filelayoutdev.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c index 95604f64cab8..cd3aef571c34 100644 --- a/fs/nfs/nfs4filelayoutdev.c +++ b/fs/nfs/nfs4filelayoutdev.c @@ -801,34 +801,34 @@ nfs4_fl_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx) struct nfs4_file_layout_dsaddr *dsaddr = FILELAYOUT_LSEG(lseg)->dsaddr; struct nfs4_pnfs_ds *ds = dsaddr->ds_list[ds_idx]; struct nfs4_deviceid_node *devid = FILELAYOUT_DEVID_NODE(lseg); - - if (filelayout_test_devid_unavailable(devid)) - return NULL; + struct nfs4_pnfs_ds *ret = ds; if (ds == NULL) { printk(KERN_ERR "NFS: %s: No data server for offset index %d\n", __func__, ds_idx); filelayout_mark_devid_invalid(devid); - return NULL; + goto out; } if (ds->ds_clp) - return ds; + goto out_test_devid; if (test_and_set_bit(NFS4DS_CONNECTING, &ds->ds_state) == 0) { struct nfs_server *s = NFS_SERVER(lseg->pls_layout->plh_inode); int err; err = nfs4_ds_connect(s, ds); - if (err) { + if (err) nfs4_mark_deviceid_unavailable(devid); - ds = NULL; - } nfs4_clear_ds_conn_bit(ds); } else { /* Either ds is connected, or ds is NULL */ nfs4_wait_ds_connect(ds); } - return ds; +out_test_devid: + if (filelayout_test_devid_unavailable(devid)) + ret = NULL; +out: + return ret; } module_param(dataserver_retrans, uint, 0644); From acd65e5bc1986d0089efec3fe63e52ea0c406d6d Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 26 Sep 2013 14:32:56 -0400 Subject: [PATCH 359/523] NFSv4.1: Ensure memory ordering between nfs4_ds_connect and nfs4_fl_prepare_ds We need to ensure that the initialisation of the data server nfs_client structure in nfs4_ds_connect is correctly ordered w.r.t. the read of ds->ds_clp in nfs4_fl_prepare_ds. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4filelayoutdev.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c index cd3aef571c34..c7c295e556ed 100644 --- a/fs/nfs/nfs4filelayoutdev.c +++ b/fs/nfs/nfs4filelayoutdev.c @@ -185,6 +185,7 @@ nfs4_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds) if (status) goto out_put; + smp_wmb(); ds->ds_clp = clp; dprintk("%s [new] addr: %s\n", __func__, ds->ds_remotestr); out: @@ -809,6 +810,7 @@ nfs4_fl_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx) filelayout_mark_devid_invalid(devid); goto out; } + smp_rmb(); if (ds->ds_clp) goto out_test_devid; From 58a8cf1212f0f3b9afb07b73647a2bca4e5a28af Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Tue, 24 Sep 2013 13:58:02 -0400 Subject: [PATCH 360/523] NFSv4.1: try SECINFO_NO_NAME flavs until one works Call nfs4_lookup_root_sec for each flavor returned by SECINFO_NO_NAME until one works. One example of a situation this fixes: - server configured for krb5 - server principal somehow gets deleted from KDC - server still thinking krb is good, sends krb5 as first entry in SECINFO_NO_NAME response - client tries krb5, but this fails without even sending an RPC because gssd's requests to the KDC can't find the server's principal Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 30 +++++++++++++++++++++++++++--- 1 file changed, 27 insertions(+), 3 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 488ef9b5c51a..f5fe16bd426c 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -7578,6 +7578,8 @@ nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, struct page *page; rpc_authflavor_t flavor; struct nfs4_secinfo_flavors *flavors; + struct nfs4_secinfo4 *secinfo; + int i; page = alloc_page(GFP_KERNEL); if (!page) { @@ -7599,9 +7601,31 @@ nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, if (err) goto out_freepage; - flavor = nfs_find_best_sec(flavors); - if (err == 0) - err = nfs4_lookup_root_sec(server, fhandle, info, flavor); + for (i = 0; i < flavors->num_flavors; i++) { + secinfo = &flavors->flavors[i]; + + switch (secinfo->flavor) { + case RPC_AUTH_NULL: + case RPC_AUTH_UNIX: + case RPC_AUTH_GSS: + flavor = rpcauth_get_pseudoflavor(secinfo->flavor, + &secinfo->flavor_info); + break; + default: + flavor = RPC_AUTH_MAXFLAVOR; + break; + } + + if (flavor != RPC_AUTH_MAXFLAVOR) { + err = nfs4_lookup_root_sec(server, fhandle, + info, flavor); + if (!err) + break; + } + } + + if (flavor == RPC_AUTH_MAXFLAVOR) + err = -EPERM; out_freepage: put_page(page); From 367156d9a87b21b5232dd93107c5fc61b09ba2ef Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Wed, 25 Sep 2013 17:02:48 -0400 Subject: [PATCH 361/523] NFS: Give "flavor" an initial value to fix a compile warning The previous patch introduces a compile warning by not assigning an initial value to the "flavor" variable. This could only be a problem if the server returns a supported secflavor list of length zero, but it's better to fix this before it's ever hit. Signed-off-by: Anna Schumaker Acked-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f5fe16bd426c..d53d6785cba2 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -7576,7 +7576,7 @@ nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, { int err; struct page *page; - rpc_authflavor_t flavor; + rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR; struct nfs4_secinfo_flavors *flavors; struct nfs4_secinfo4 *secinfo; int i; From 15c03dd4859ab16f9212238f29dd315654aa94f6 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 29 Sep 2013 15:02:38 -0700 Subject: [PATCH 362/523] Linux 3.12-rc3 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 8d0668f473ba..2ae108d4f2af 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 12 SUBLEVEL = 0 -EXTRAVERSION = -rc2 +EXTRAVERSION = -rc3 NAME = One Giant Leap for Frogkind # *DOCUMENTATION* From 71ac7f6255c560716c20da8ee2c964bbd96e941f Mon Sep 17 00:00:00 2001 From: Tyler Hicks Date: Sun, 29 Sep 2013 08:39:21 -0700 Subject: [PATCH 363/523] apparmor: Use shash crypto API interface for profile hashes Use the shash interface, rather than the hash interface, when hashing AppArmor profiles. The shash interface does not use scatterlists and it is a better fit for what AppArmor needs. This fixes a kernel paging BUG when aa_calc_profile_hash() is passed a buffer from vmalloc(). The hash interface requires callers to handle vmalloc() buffers differently than what AppArmor was doing. Due to vmalloc() memory not being physically contiguous, each individual page behind the buffer must be assigned to a scatterlist with sg_set_page() and then the scatterlist passed to crypto_hash_update(). The shash interface does not have that limitation and allows vmalloc() and kmalloc() buffers to be handled in the same manner. BugLink: https://launchpad.net/bugs/1216294/ BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=62261 Signed-off-by: Tyler Hicks Acked-by: Seth Arnold Signed-off-by: John Johansen Signed-off-by: James Morris --- security/apparmor/crypto.c | 34 ++++++++++++++++------------------ 1 file changed, 16 insertions(+), 18 deletions(-) diff --git a/security/apparmor/crypto.c b/security/apparmor/crypto.c index d6222ba4e919..532471d0b3a0 100644 --- a/security/apparmor/crypto.c +++ b/security/apparmor/crypto.c @@ -15,14 +15,14 @@ * it should be. */ -#include +#include #include "include/apparmor.h" #include "include/crypto.h" static unsigned int apparmor_hash_size; -static struct crypto_hash *apparmor_tfm; +static struct crypto_shash *apparmor_tfm; unsigned int aa_hash_size(void) { @@ -32,35 +32,33 @@ unsigned int aa_hash_size(void) int aa_calc_profile_hash(struct aa_profile *profile, u32 version, void *start, size_t len) { - struct scatterlist sg[2]; - struct hash_desc desc = { - .tfm = apparmor_tfm, - .flags = 0 - }; + struct { + struct shash_desc shash; + char ctx[crypto_shash_descsize(apparmor_tfm)]; + } desc; int error = -ENOMEM; u32 le32_version = cpu_to_le32(version); if (!apparmor_tfm) return 0; - sg_init_table(sg, 2); - sg_set_buf(&sg[0], &le32_version, 4); - sg_set_buf(&sg[1], (u8 *) start, len); - profile->hash = kzalloc(apparmor_hash_size, GFP_KERNEL); if (!profile->hash) goto fail; - error = crypto_hash_init(&desc); + desc.shash.tfm = apparmor_tfm; + desc.shash.flags = 0; + + error = crypto_shash_init(&desc.shash); if (error) goto fail; - error = crypto_hash_update(&desc, &sg[0], 4); + error = crypto_shash_update(&desc.shash, (u8 *) &le32_version, 4); if (error) goto fail; - error = crypto_hash_update(&desc, &sg[1], len); + error = crypto_shash_update(&desc.shash, (u8 *) start, len); if (error) goto fail; - error = crypto_hash_final(&desc, profile->hash); + error = crypto_shash_final(&desc.shash, profile->hash); if (error) goto fail; @@ -75,19 +73,19 @@ fail: static int __init init_profile_hash(void) { - struct crypto_hash *tfm; + struct crypto_shash *tfm; if (!apparmor_initialized) return 0; - tfm = crypto_alloc_hash("sha1", 0, CRYPTO_ALG_ASYNC); + tfm = crypto_alloc_shash("sha1", 0, CRYPTO_ALG_ASYNC); if (IS_ERR(tfm)) { int error = PTR_ERR(tfm); AA_ERROR("failed to setup profile sha1 hashing: %d\n", error); return error; } apparmor_tfm = tfm; - apparmor_hash_size = crypto_hash_digestsize(apparmor_tfm); + apparmor_hash_size = crypto_shash_digestsize(apparmor_tfm); aa_info_message("AppArmor sha1 policy hashing enabled"); From 4cd4fc77032dca46fe7475d81461e29145db247a Mon Sep 17 00:00:00 2001 From: John Johansen Date: Sun, 29 Sep 2013 08:39:22 -0700 Subject: [PATCH 364/523] apparmor: fix suspicious RCU usage warning in policy.c/policy.h The recent 3.12 pull request for apparmor was missing a couple rcu _protected access modifiers. Resulting in the follow suspicious RCU usage [ 29.804534] [ INFO: suspicious RCU usage. ] [ 29.804539] 3.11.0+ #5 Not tainted [ 29.804541] ------------------------------- [ 29.804545] security/apparmor/include/policy.h:363 suspicious rcu_dereference_check() usage! [ 29.804548] [ 29.804548] other info that might help us debug this: [ 29.804548] [ 29.804553] [ 29.804553] rcu_scheduler_active = 1, debug_locks = 1 [ 29.804558] 2 locks held by apparmor_parser/1268: [ 29.804560] #0: (sb_writers#9){.+.+.+}, at: [] file_start_write+0x27/0x29 [ 29.804576] #1: (&ns->lock){+.+.+.}, at: [] aa_replace_profiles+0x166/0x57c [ 29.804589] [ 29.804589] stack backtrace: [ 29.804595] CPU: 0 PID: 1268 Comm: apparmor_parser Not tainted 3.11.0+ #5 [ 29.804599] Hardware name: ASUSTeK Computer Inc. UL50VT /UL50VT , BIOS 217 03/01/2010 [ 29.804602] 0000000000000000 ffff8800b95a1d90 ffffffff8144eb9b ffff8800b94db540 [ 29.804611] ffff8800b95a1dc0 ffffffff81087439 ffff880138cc3a18 ffff880138cc3a18 [ 29.804619] ffff8800b9464a90 ffff880138cc3a38 ffff8800b95a1df0 ffffffff811f5084 [ 29.804628] Call Trace: [ 29.804636] [] dump_stack+0x4e/0x82 [ 29.804642] [] lockdep_rcu_suspicious+0xfc/0x105 [ 29.804649] [] __aa_update_replacedby+0x53/0x7f [ 29.804655] [] __replace_profile+0x11f/0x1ed [ 29.804661] [] aa_replace_profiles+0x410/0x57c [ 29.804668] [] profile_replace+0x35/0x4c [ 29.804674] [] vfs_write+0xad/0x113 [ 29.804680] [] SyS_write+0x44/0x7a [ 29.804687] [] system_call_fastpath+0x16/0x1b [ 29.804691] [ 29.804694] =============================== [ 29.804697] [ INFO: suspicious RCU usage. ] [ 29.804700] 3.11.0+ #5 Not tainted [ 29.804703] ------------------------------- [ 29.804706] security/apparmor/policy.c:566 suspicious rcu_dereference_check() usage! [ 29.804709] [ 29.804709] other info that might help us debug this: [ 29.804709] [ 29.804714] [ 29.804714] rcu_scheduler_active = 1, debug_locks = 1 [ 29.804718] 2 locks held by apparmor_parser/1268: [ 29.804721] #0: (sb_writers#9){.+.+.+}, at: [] file_start_write+0x27/0x29 [ 29.804733] #1: (&ns->lock){+.+.+.}, at: [] aa_replace_profiles+0x166/0x57c [ 29.804744] [ 29.804744] stack backtrace: [ 29.804750] CPU: 0 PID: 1268 Comm: apparmor_parser Not tainted 3.11.0+ #5 [ 29.804753] Hardware name: ASUSTeK Computer Inc. UL50VT /UL50VT , BIOS 217 03/01/2010 [ 29.804756] 0000000000000000 ffff8800b95a1d80 ffffffff8144eb9b ffff8800b94db540 [ 29.804764] ffff8800b95a1db0 ffffffff81087439 ffff8800b95b02b0 0000000000000000 [ 29.804772] ffff8800b9efba08 ffff880138cc3a38 ffff8800b95a1dd0 ffffffff811f4f94 [ 29.804779] Call Trace: [ 29.804786] [] dump_stack+0x4e/0x82 [ 29.804791] [] lockdep_rcu_suspicious+0xfc/0x105 [ 29.804798] [] aa_free_replacedby_kref+0x4d/0x62 [ 29.804804] [] ? aa_put_namespace+0x17/0x17 [ 29.804810] [] kref_put+0x36/0x40 [ 29.804816] [] __replace_profile+0x13a/0x1ed [ 29.804822] [] aa_replace_profiles+0x410/0x57c [ 29.804829] [] profile_replace+0x35/0x4c [ 29.804835] [] vfs_write+0xad/0x113 [ 29.804840] [] SyS_write+0x44/0x7a [ 29.804847] [] system_call_fastpath+0x16/0x1b Reported-by: miles.lane@gmail.com CC: paulmck@linux.vnet.ibm.com Signed-off-by: John Johansen Signed-off-by: James Morris --- security/apparmor/include/policy.h | 4 +++- security/apparmor/policy.c | 3 ++- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/security/apparmor/include/policy.h b/security/apparmor/include/policy.h index f2d4b6348cbc..c28b0f20ab53 100644 --- a/security/apparmor/include/policy.h +++ b/security/apparmor/include/policy.h @@ -360,7 +360,9 @@ static inline void aa_put_replacedby(struct aa_replacedby *p) static inline void __aa_update_replacedby(struct aa_profile *orig, struct aa_profile *new) { - struct aa_profile *tmp = rcu_dereference(orig->replacedby->profile); + struct aa_profile *tmp; + tmp = rcu_dereference_protected(orig->replacedby->profile, + mutex_is_locked(&orig->ns->lock)); rcu_assign_pointer(orig->replacedby->profile, aa_get_profile(new)); orig->flags |= PFLAG_INVALID; aa_put_profile(tmp); diff --git a/security/apparmor/policy.c b/security/apparmor/policy.c index 6172509fa2b7..345bec07a27d 100644 --- a/security/apparmor/policy.c +++ b/security/apparmor/policy.c @@ -563,7 +563,8 @@ void __init aa_free_root_ns(void) static void free_replacedby(struct aa_replacedby *r) { if (r) { - aa_put_profile(rcu_dereference(r->profile)); + /* r->profile will not be updated any more as r is dead */ + aa_put_profile(rcu_dereference_protected(r->profile, true)); kzfree(r); } } From 49475555848d396a0c78fb2f8ecceb3f3f263ef1 Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Wed, 18 Sep 2013 12:39:16 +0200 Subject: [PATCH 365/523] sysv: Add forgotten superblock lock init for v7 fs Superblock lock was replaced with (un)lock_super() removal, but left uninitialized for Seventh Edition UNIX filesystem in the following commit (3.7): c07cb01 sysv: drop lock/unlock super Signed-off-by: Lubomir Rintel Signed-off-by: Christoph Hellwig Signed-off-by: Al Viro --- fs/sysv/super.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/sysv/super.c b/fs/sysv/super.c index d0c6a007ce83..eda10959714f 100644 --- a/fs/sysv/super.c +++ b/fs/sysv/super.c @@ -487,6 +487,7 @@ static int v7_fill_super(struct super_block *sb, void *data, int silent) sbi->s_sb = sb; sbi->s_block_base = 0; sbi->s_type = FSTYPE_V7; + mutex_init(&sbi->s_lock); sb->s_fs_info = sbi; sb_set_blocksize(sb, 512); From 7b9a2378b480f426d2c575633fa08c20e341bb7b Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 29 Sep 2013 14:59:30 -0400 Subject: [PATCH 366/523] ocfs2: needs ->d_lock to poke in ->d_parent->d_inode from ->d_revalidate() Signed-off-by: Al Viro --- fs/ocfs2/dcache.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/fs/ocfs2/dcache.c b/fs/ocfs2/dcache.c index ef999729e274..0d3a97d2d5f6 100644 --- a/fs/ocfs2/dcache.c +++ b/fs/ocfs2/dcache.c @@ -70,9 +70,10 @@ static int ocfs2_dentry_revalidate(struct dentry *dentry, unsigned int flags) */ if (inode == NULL) { unsigned long gen = (unsigned long) dentry->d_fsdata; - unsigned long pgen = - OCFS2_I(dentry->d_parent->d_inode)->ip_dir_lock_gen; - + unsigned long pgen; + spin_lock(&dentry->d_lock); + pgen = OCFS2_I(dentry->d_parent->d_inode)->ip_dir_lock_gen; + spin_unlock(&dentry->d_lock); trace_ocfs2_dentry_revalidate_negative(dentry->d_name.len, dentry->d_name.name, pgen, gen); From 13f3583892cb7afdb2e9eb0207dc4e03ec6f01fd Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 29 Sep 2013 16:29:04 -0400 Subject: [PATCH 367/523] afs: dget_parent() can't return a negative dentry Signed-off-by: Al Viro --- fs/afs/dir.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/fs/afs/dir.c b/fs/afs/dir.c index 646337dc5201..529300327f45 100644 --- a/fs/afs/dir.c +++ b/fs/afs/dir.c @@ -600,9 +600,6 @@ static int afs_d_revalidate(struct dentry *dentry, unsigned int flags) /* lock down the parent dentry so we can peer at it */ parent = dget_parent(dentry); - if (!parent->d_inode) - goto out_bad; - dir = AFS_FS_I(parent->d_inode); /* validate the parent directory */ From 46663d05cff3442321dc550dff6b79b885c7856f Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Sun, 1 Sep 2013 22:56:21 +0200 Subject: [PATCH 368/523] avr32: use Kbuild infrastructure to handle the asm-generic headers Use kbuild to add asm-generic headers that do nothing, also remove the arch specific wrapper headers. This only affects headers that do nothing but include the generic equivalent. It does not touch any header that does a little more. Signed-off-by: Steven Rostedt Signed-off-by: Hans-Christian Egtvedt --- arch/avr32/include/asm/Kbuild | 16 +++++++++++++++- arch/avr32/include/asm/cputime.h | 6 ------ arch/avr32/include/asm/delay.h | 1 - arch/avr32/include/asm/device.h | 7 ------- arch/avr32/include/asm/div64.h | 6 ------ arch/avr32/include/asm/emergency-restart.h | 6 ------ arch/avr32/include/asm/futex.h | 6 ------ arch/avr32/include/asm/irq_regs.h | 1 - arch/avr32/include/asm/local.h | 6 ------ arch/avr32/include/asm/local64.h | 1 - arch/avr32/include/asm/percpu.h | 6 ------ arch/avr32/include/asm/scatterlist.h | 6 ------ arch/avr32/include/asm/sections.h | 6 ------ arch/avr32/include/asm/topology.h | 6 ------ arch/avr32/include/asm/xor.h | 6 ------ 15 files changed, 15 insertions(+), 71 deletions(-) delete mode 100644 arch/avr32/include/asm/cputime.h delete mode 100644 arch/avr32/include/asm/delay.h delete mode 100644 arch/avr32/include/asm/device.h delete mode 100644 arch/avr32/include/asm/div64.h delete mode 100644 arch/avr32/include/asm/emergency-restart.h delete mode 100644 arch/avr32/include/asm/futex.h delete mode 100644 arch/avr32/include/asm/irq_regs.h delete mode 100644 arch/avr32/include/asm/local.h delete mode 100644 arch/avr32/include/asm/local64.h delete mode 100644 arch/avr32/include/asm/percpu.h delete mode 100644 arch/avr32/include/asm/scatterlist.h delete mode 100644 arch/avr32/include/asm/sections.h delete mode 100644 arch/avr32/include/asm/topology.h delete mode 100644 arch/avr32/include/asm/xor.h diff --git a/arch/avr32/include/asm/Kbuild b/arch/avr32/include/asm/Kbuild index d22af851f3f6..fd7980743890 100644 --- a/arch/avr32/include/asm/Kbuild +++ b/arch/avr32/include/asm/Kbuild @@ -1,5 +1,19 @@ generic-y += clkdev.h +generic-y += cputime.h +generic-y += delay.h +generic-y += device.h +generic-y += div64.h +generic-y += emergency-restart.h generic-y += exec.h -generic-y += trace_clock.h +generic-y += futex.h +generic-y += irq_regs.h generic-y += param.h +generic-y += local.h +generic-y += local64.h +generic-y += percpu.h +generic-y += scatterlist.h +generic-y += sections.h +generic-y += topology.h +generic-y += trace_clock.h +generic-y += xor.h diff --git a/arch/avr32/include/asm/cputime.h b/arch/avr32/include/asm/cputime.h deleted file mode 100644 index e87e0f81cbeb..000000000000 --- a/arch/avr32/include/asm/cputime.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __ASM_AVR32_CPUTIME_H -#define __ASM_AVR32_CPUTIME_H - -#include - -#endif /* __ASM_AVR32_CPUTIME_H */ diff --git a/arch/avr32/include/asm/delay.h b/arch/avr32/include/asm/delay.h deleted file mode 100644 index 9670e127b7b2..000000000000 --- a/arch/avr32/include/asm/delay.h +++ /dev/null @@ -1 +0,0 @@ -#include diff --git a/arch/avr32/include/asm/device.h b/arch/avr32/include/asm/device.h deleted file mode 100644 index d8f9872b0e2d..000000000000 --- a/arch/avr32/include/asm/device.h +++ /dev/null @@ -1,7 +0,0 @@ -/* - * Arch specific extensions to struct device - * - * This file is released under the GPLv2 - */ -#include - diff --git a/arch/avr32/include/asm/div64.h b/arch/avr32/include/asm/div64.h deleted file mode 100644 index d7ddd4fdeca6..000000000000 --- a/arch/avr32/include/asm/div64.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __ASM_AVR32_DIV64_H -#define __ASM_AVR32_DIV64_H - -#include - -#endif /* __ASM_AVR32_DIV64_H */ diff --git a/arch/avr32/include/asm/emergency-restart.h b/arch/avr32/include/asm/emergency-restart.h deleted file mode 100644 index 3e7e014776ba..000000000000 --- a/arch/avr32/include/asm/emergency-restart.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __ASM_AVR32_EMERGENCY_RESTART_H -#define __ASM_AVR32_EMERGENCY_RESTART_H - -#include - -#endif /* __ASM_AVR32_EMERGENCY_RESTART_H */ diff --git a/arch/avr32/include/asm/futex.h b/arch/avr32/include/asm/futex.h deleted file mode 100644 index 10419f14a68a..000000000000 --- a/arch/avr32/include/asm/futex.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __ASM_AVR32_FUTEX_H -#define __ASM_AVR32_FUTEX_H - -#include - -#endif /* __ASM_AVR32_FUTEX_H */ diff --git a/arch/avr32/include/asm/irq_regs.h b/arch/avr32/include/asm/irq_regs.h deleted file mode 100644 index 3dd9c0b70270..000000000000 --- a/arch/avr32/include/asm/irq_regs.h +++ /dev/null @@ -1 +0,0 @@ -#include diff --git a/arch/avr32/include/asm/local.h b/arch/avr32/include/asm/local.h deleted file mode 100644 index 1c1619694da3..000000000000 --- a/arch/avr32/include/asm/local.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __ASM_AVR32_LOCAL_H -#define __ASM_AVR32_LOCAL_H - -#include - -#endif /* __ASM_AVR32_LOCAL_H */ diff --git a/arch/avr32/include/asm/local64.h b/arch/avr32/include/asm/local64.h deleted file mode 100644 index 36c93b5cc239..000000000000 --- a/arch/avr32/include/asm/local64.h +++ /dev/null @@ -1 +0,0 @@ -#include diff --git a/arch/avr32/include/asm/percpu.h b/arch/avr32/include/asm/percpu.h deleted file mode 100644 index 69227b4cd0d4..000000000000 --- a/arch/avr32/include/asm/percpu.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __ASM_AVR32_PERCPU_H -#define __ASM_AVR32_PERCPU_H - -#include - -#endif /* __ASM_AVR32_PERCPU_H */ diff --git a/arch/avr32/include/asm/scatterlist.h b/arch/avr32/include/asm/scatterlist.h deleted file mode 100644 index a5902d9834e8..000000000000 --- a/arch/avr32/include/asm/scatterlist.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __ASM_AVR32_SCATTERLIST_H -#define __ASM_AVR32_SCATTERLIST_H - -#include - -#endif /* __ASM_AVR32_SCATTERLIST_H */ diff --git a/arch/avr32/include/asm/sections.h b/arch/avr32/include/asm/sections.h deleted file mode 100644 index aa14252e4181..000000000000 --- a/arch/avr32/include/asm/sections.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __ASM_AVR32_SECTIONS_H -#define __ASM_AVR32_SECTIONS_H - -#include - -#endif /* __ASM_AVR32_SECTIONS_H */ diff --git a/arch/avr32/include/asm/topology.h b/arch/avr32/include/asm/topology.h deleted file mode 100644 index 5b766cbb4806..000000000000 --- a/arch/avr32/include/asm/topology.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef __ASM_AVR32_TOPOLOGY_H -#define __ASM_AVR32_TOPOLOGY_H - -#include - -#endif /* __ASM_AVR32_TOPOLOGY_H */ diff --git a/arch/avr32/include/asm/xor.h b/arch/avr32/include/asm/xor.h deleted file mode 100644 index 99c87aa0af4f..000000000000 --- a/arch/avr32/include/asm/xor.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef _ASM_XOR_H -#define _ASM_XOR_H - -#include - -#endif From 1b0135b5e20c56b2edae29e92b91c0b12c983432 Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Wed, 25 Sep 2013 15:32:35 +0200 Subject: [PATCH 369/523] avr32: fix clockevents kernel warning Since commit 01426478df3a8791ff5c8b6b82d409e699cfaf38 (avr32: Use generic idle loop) the kernel throws the following warning on avr32: WARNING: at 900322e4 [verbose debug info unavailable] Modules linked in: CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.0-rc2 #117 task: 901c3ecc ti: 901c0000 task.ti: 901c0000 PC is at cpu_idle_poll_ctrl+0x1c/0x38 LR is at comparator_mode+0x3e/0x40 pc : [<900322e4>] lr : [<90014882>] Not tainted sp : 901c1f74 r12: 00000000 r11: 901c74a0 r10: 901d2510 r9 : 00000001 r8 : 901db4de r7 : 901c74a0 r6 : 00000001 r5 : 00410020 r4 : 901db574 r3 : 00410024 r2 : 90206fe0 r1 : 00000000 r0 : 007f0000 Flags: qvnzc Mode bits: hjmde....G CPU Mode: Supervisor Call trace: [<90039ede>] clockevents_set_mode+0x16/0x2e [<90039f00>] clockevents_shutdown+0xa/0x1e [<9003a078>] clockevents_exchange_device+0x58/0x70 [<9003a78c>] tick_check_new_device+0x38/0x54 [<9003a1a2>] clockevents_register_device+0x32/0x90 [<900035c4>] time_init+0xa8/0x108 [<90000520>] start_kernel+0x128/0x23c When the 'avr32_comparator' clockevent device is registered, the clockevent core sets the mode of that clockevent device to CLOCK_EVT_MODE_SHUTDOWN. Due to this, the 'comparator_mode' function calls the 'cpu_idle_poll_ctrl' to disables idle poll. This results in the aforementioned warning because the polling is not enabled yet. Change the code to only disable idle poll if it is enabled by the same function to avoid the warning. Cc: stable@vger.kernel.org Signed-off-by: Gabor Juhos Acked-by: Hans-Christian Egtvedt --- arch/avr32/kernel/time.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/avr32/kernel/time.c b/arch/avr32/kernel/time.c index 869a1c6ffeee..12f828ad5058 100644 --- a/arch/avr32/kernel/time.c +++ b/arch/avr32/kernel/time.c @@ -98,7 +98,14 @@ static void comparator_mode(enum clock_event_mode mode, case CLOCK_EVT_MODE_SHUTDOWN: sysreg_write(COMPARE, 0); pr_debug("%s: stop\n", evdev->name); - cpu_idle_poll_ctrl(false); + if (evdev->mode == CLOCK_EVT_MODE_ONESHOT || + evdev->mode == CLOCK_EVT_MODE_RESUME) { + /* + * Only disable idle poll if we have forced that + * in a previous call. + */ + cpu_idle_poll_ctrl(false); + } break; default: BUG(); From 395e73a278cfa3b1560b414ab93674711574ddc6 Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Wed, 25 Sep 2013 21:50:01 +0200 Subject: [PATCH 370/523] avr32: cast syscall_return to silence compiler warning The patch fixes the following compiler warning: CC arch/avr32/kernel/process.o arch/avr32/kernel/process.c: In function 'copy_thread': arch/avr32/kernel/process.c:292: warning: assignment makes integer \ from pointer without a cast Signed-off-by: Gabor Juhos Acked-by: Hans-Christian Egtvedt --- arch/avr32/kernel/process.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/avr32/kernel/process.c b/arch/avr32/kernel/process.c index c2731003edef..42a53e740a7e 100644 --- a/arch/avr32/kernel/process.c +++ b/arch/avr32/kernel/process.c @@ -289,7 +289,7 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, memset(childregs, 0, sizeof(struct pt_regs)); p->thread.cpu_context.r0 = arg; p->thread.cpu_context.r1 = usp; /* fn */ - p->thread.cpu_context.r2 = syscall_return; + p->thread.cpu_context.r2 = (unsigned long)syscall_return; p->thread.cpu_context.pc = (unsigned long)ret_from_kernel_thread; childregs->sr = MODE_SUPERVISOR; } else { From dfc2cd7c284aa2dc88b5edbdd08645517a747d37 Mon Sep 17 00:00:00 2001 From: Ondrej Zary Date: Fri, 27 Sep 2013 20:27:58 +0200 Subject: [PATCH 371/523] ALSA: ac97: Add ID for TI TLV320AIC27 codec Add 0x54584e03 ID for TI TLV320AIC27 AC'97 codec according to datasheet: http://www.ti.com/lit/ds/slas253a/slas253a.pdf The weird thing is that the chip is physically marked 320AD91. Signed-off-by: Ondrej Zary Signed-off-by: Takashi Iwai --- sound/pci/ac97/ac97_codec.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c index 445ca481d8d3..bf578ba2677e 100644 --- a/sound/pci/ac97/ac97_codec.c +++ b/sound/pci/ac97/ac97_codec.c @@ -175,6 +175,7 @@ static const struct ac97_codec_id snd_ac97_codec_ids[] = { { 0x54524106, 0xffffffff, "TR28026", NULL, NULL }, { 0x54524108, 0xffffffff, "TR28028", patch_tritech_tr28028, NULL }, // added by xin jin [07/09/99] { 0x54524123, 0xffffffff, "TR28602", NULL, NULL }, // only guess --jk [TR28023 = eMicro EM28023 (new CT1297)] +{ 0x54584e03, 0xffffffff, "TLV320AIC27", NULL, NULL }, { 0x54584e20, 0xffffffff, "TLC320AD9xC", NULL, NULL }, { 0x56494161, 0xffffffff, "VIA1612A", NULL, NULL }, // modified ICE1232 with S/PDIF { 0x56494170, 0xffffffff, "VIA1617A", patch_vt1617a, NULL }, // modified VT1616 with S/PDIF From 4a4370442c996be0fd08234a167c8a127c2488bb Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 30 Sep 2013 12:13:44 +0200 Subject: [PATCH 372/523] ALSA: hda - Fix GPIO for Acer Aspire 3830TG Acer Aspire 3830TG seems requiring GPIO bit 0 as the primary mute control. When a machine is booted after Windows 8, the GPIO pin is turned off and it results in the silent output. This patch adds the manual fixup of GPIO bit 0 for this model. Reported-by: Christopher Cc: Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_conexant.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c index 4edd2d0f9a3c..ec68eaea0336 100644 --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -3231,6 +3231,7 @@ enum { CXT_FIXUP_INC_MIC_BOOST, CXT_FIXUP_HEADPHONE_MIC_PIN, CXT_FIXUP_HEADPHONE_MIC, + CXT_FIXUP_GPIO1, }; static void cxt_fixup_stereo_dmic(struct hda_codec *codec, @@ -3375,6 +3376,15 @@ static const struct hda_fixup cxt_fixups[] = { .type = HDA_FIXUP_FUNC, .v.func = cxt_fixup_headphone_mic, }, + [CXT_FIXUP_GPIO1] = { + .type = HDA_FIXUP_VERBS, + .v.verbs = (const struct hda_verb[]) { + { 0x01, AC_VERB_SET_GPIO_MASK, 0x01 }, + { 0x01, AC_VERB_SET_GPIO_DIRECTION, 0x01 }, + { 0x01, AC_VERB_SET_GPIO_DATA, 0x01 }, + { } + }, + }, }; static const struct snd_pci_quirk cxt5051_fixups[] = { @@ -3384,6 +3394,7 @@ static const struct snd_pci_quirk cxt5051_fixups[] = { static const struct snd_pci_quirk cxt5066_fixups[] = { SND_PCI_QUIRK(0x1025, 0x0543, "Acer Aspire One 522", CXT_FIXUP_STEREO_DMIC), + SND_PCI_QUIRK(0x1025, 0x054c, "Acer Aspire 3830TG", CXT_FIXUP_GPIO1), SND_PCI_QUIRK(0x1043, 0x138d, "Asus", CXT_FIXUP_HEADPHONE_MIC_PIN), SND_PCI_QUIRK(0x17aa, 0x20f2, "Lenovo T400", CXT_PINCFG_LENOVO_TP410), SND_PCI_QUIRK(0x17aa, 0x215e, "Lenovo T410", CXT_PINCFG_LENOVO_TP410), From f4a87e7bd2eaef26a3ca25437ce8b807de2966ad Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Mon, 30 Sep 2013 08:51:46 +0100 Subject: [PATCH 373/523] netfilter: synproxy: fix BUG_ON triggered by corrupt TCP packets TCP packets hitting the SYN proxy through the SYNPROXY target are not validated by TCP conntrack. When th->doff is below 5, an underflow happens when calculating the options length, causing skb_header_pointer() to return NULL and triggering the BUG_ON(). Handle this case gracefully by checking for NULL instead of using BUG_ON(). Reported-by: Martin Topholm Tested-by: Martin Topholm Signed-off-by: Patrick McHardy Signed-off-by: Pablo Neira Ayuso --- include/net/netfilter/nf_conntrack_synproxy.h | 2 +- net/ipv4/netfilter/ipt_SYNPROXY.c | 10 +++++++--- net/ipv6/netfilter/ip6t_SYNPROXY.c | 10 +++++++--- net/netfilter/nf_synproxy_core.c | 12 +++++++----- 4 files changed, 22 insertions(+), 12 deletions(-) diff --git a/include/net/netfilter/nf_conntrack_synproxy.h b/include/net/netfilter/nf_conntrack_synproxy.h index 806f54a290d6..f572f313d6f1 100644 --- a/include/net/netfilter/nf_conntrack_synproxy.h +++ b/include/net/netfilter/nf_conntrack_synproxy.h @@ -56,7 +56,7 @@ struct synproxy_options { struct tcphdr; struct xt_synproxy_info; -extern void synproxy_parse_options(const struct sk_buff *skb, unsigned int doff, +extern bool synproxy_parse_options(const struct sk_buff *skb, unsigned int doff, const struct tcphdr *th, struct synproxy_options *opts); extern unsigned int synproxy_options_size(const struct synproxy_options *opts); diff --git a/net/ipv4/netfilter/ipt_SYNPROXY.c b/net/ipv4/netfilter/ipt_SYNPROXY.c index 67e17dcda65e..b6346bf2fde3 100644 --- a/net/ipv4/netfilter/ipt_SYNPROXY.c +++ b/net/ipv4/netfilter/ipt_SYNPROXY.c @@ -267,7 +267,8 @@ synproxy_tg4(struct sk_buff *skb, const struct xt_action_param *par) if (th == NULL) return NF_DROP; - synproxy_parse_options(skb, par->thoff, th, &opts); + if (!synproxy_parse_options(skb, par->thoff, th, &opts)) + return NF_DROP; if (th->syn && !(th->ack || th->fin || th->rst)) { /* Initial SYN from client */ @@ -350,7 +351,8 @@ static unsigned int ipv4_synproxy_hook(unsigned int hooknum, /* fall through */ case TCP_CONNTRACK_SYN_SENT: - synproxy_parse_options(skb, thoff, th, &opts); + if (!synproxy_parse_options(skb, thoff, th, &opts)) + return NF_DROP; if (!th->syn && th->ack && CTINFO2DIR(ctinfo) == IP_CT_DIR_ORIGINAL) { @@ -373,7 +375,9 @@ static unsigned int ipv4_synproxy_hook(unsigned int hooknum, if (!th->syn || !th->ack) break; - synproxy_parse_options(skb, thoff, th, &opts); + if (!synproxy_parse_options(skb, thoff, th, &opts)) + return NF_DROP; + if (opts.options & XT_SYNPROXY_OPT_TIMESTAMP) synproxy->tsoff = opts.tsval - synproxy->its; diff --git a/net/ipv6/netfilter/ip6t_SYNPROXY.c b/net/ipv6/netfilter/ip6t_SYNPROXY.c index 19cfea8dbcaa..2748b042da72 100644 --- a/net/ipv6/netfilter/ip6t_SYNPROXY.c +++ b/net/ipv6/netfilter/ip6t_SYNPROXY.c @@ -282,7 +282,8 @@ synproxy_tg6(struct sk_buff *skb, const struct xt_action_param *par) if (th == NULL) return NF_DROP; - synproxy_parse_options(skb, par->thoff, th, &opts); + if (!synproxy_parse_options(skb, par->thoff, th, &opts)) + return NF_DROP; if (th->syn && !(th->ack || th->fin || th->rst)) { /* Initial SYN from client */ @@ -372,7 +373,8 @@ static unsigned int ipv6_synproxy_hook(unsigned int hooknum, /* fall through */ case TCP_CONNTRACK_SYN_SENT: - synproxy_parse_options(skb, thoff, th, &opts); + if (!synproxy_parse_options(skb, thoff, th, &opts)) + return NF_DROP; if (!th->syn && th->ack && CTINFO2DIR(ctinfo) == IP_CT_DIR_ORIGINAL) { @@ -395,7 +397,9 @@ static unsigned int ipv6_synproxy_hook(unsigned int hooknum, if (!th->syn || !th->ack) break; - synproxy_parse_options(skb, thoff, th, &opts); + if (!synproxy_parse_options(skb, thoff, th, &opts)) + return NF_DROP; + if (opts.options & XT_SYNPROXY_OPT_TIMESTAMP) synproxy->tsoff = opts.tsval - synproxy->its; diff --git a/net/netfilter/nf_synproxy_core.c b/net/netfilter/nf_synproxy_core.c index 6fd967c6278c..cdf4567ba9b3 100644 --- a/net/netfilter/nf_synproxy_core.c +++ b/net/netfilter/nf_synproxy_core.c @@ -24,7 +24,7 @@ int synproxy_net_id; EXPORT_SYMBOL_GPL(synproxy_net_id); -void +bool synproxy_parse_options(const struct sk_buff *skb, unsigned int doff, const struct tcphdr *th, struct synproxy_options *opts) { @@ -32,7 +32,8 @@ synproxy_parse_options(const struct sk_buff *skb, unsigned int doff, u8 buf[40], *ptr; ptr = skb_header_pointer(skb, doff + sizeof(*th), length, buf); - BUG_ON(ptr == NULL); + if (ptr == NULL) + return false; opts->options = 0; while (length > 0) { @@ -41,16 +42,16 @@ synproxy_parse_options(const struct sk_buff *skb, unsigned int doff, switch (opcode) { case TCPOPT_EOL: - return; + return true; case TCPOPT_NOP: length--; continue; default: opsize = *ptr++; if (opsize < 2) - return; + return true; if (opsize > length) - return; + return true; switch (opcode) { case TCPOPT_MSS: @@ -84,6 +85,7 @@ synproxy_parse_options(const struct sk_buff *skb, unsigned int doff, length -= opsize; } } + return true; } EXPORT_SYMBOL_GPL(synproxy_parse_options); From 0d1862ea1a5bb876cf05555a7307080cb75bf379 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Fri, 27 Sep 2013 12:15:05 +0200 Subject: [PATCH 374/523] can: flexcan: fix flexcan_chip_start() on imx6 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In the flexcan_chip_start() function first the flexcan core is going through the soft reset sequence, then the RX FIFO is enabled. With the hardware is put into FIFO mode, message buffers 1...7 are reserved by the FIFO engine. The remaining message buffers are in reset default values. This patch removes the bogus initialization of the message buffers, as it causes an imprecise external abort on imx6. Cc: linux-stable Reported-by: Lothar Waßmann Tested-by: Lothar Waßmann Signed-off-by: Marc Kleine-Budde --- drivers/net/can/flexcan.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index 71c677e651d7..3f21142138b7 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -702,7 +702,6 @@ static int flexcan_chip_start(struct net_device *dev) { struct flexcan_priv *priv = netdev_priv(dev); struct flexcan_regs __iomem *regs = priv->base; - unsigned int i; int err; u32 reg_mcr, reg_ctrl; @@ -772,17 +771,6 @@ static int flexcan_chip_start(struct net_device *dev) netdev_dbg(dev, "%s: writing ctrl=0x%08x", __func__, reg_ctrl); flexcan_write(reg_ctrl, ®s->ctrl); - for (i = 0; i < ARRAY_SIZE(regs->cantxfg); i++) { - flexcan_write(0, ®s->cantxfg[i].can_ctrl); - flexcan_write(0, ®s->cantxfg[i].can_id); - flexcan_write(0, ®s->cantxfg[i].data[0]); - flexcan_write(0, ®s->cantxfg[i].data[1]); - - /* put MB into rx queue */ - flexcan_write(FLEXCAN_MB_CNT_CODE(0x4), - ®s->cantxfg[i].can_ctrl); - } - /* acceptance mask/acceptance code (accept everything) */ flexcan_write(0x0, ®s->rxgmask); flexcan_write(0x0, ®s->rx14mask); From 08ebb250ef9473112273f780a777b4624a38856f Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Mon, 30 Sep 2013 15:09:20 +0200 Subject: [PATCH 375/523] MIPS: Alchemy: MTX-1: fix incorrect placement of __initdata tag __initdata tag should be placed between the variable name and equal sign for the variable to be placed in the intended .init.data section. Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Kyungmin Park Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/5934/ Signed-off-by: Ralf Baechle --- arch/mips/alchemy/board-mtx1.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/mips/alchemy/board-mtx1.c b/arch/mips/alchemy/board-mtx1.c index 4a9baa9f6330..9969dbab19e3 100644 --- a/arch/mips/alchemy/board-mtx1.c +++ b/arch/mips/alchemy/board-mtx1.c @@ -276,7 +276,7 @@ static struct platform_device mtx1_pci_host = { .resource = alchemy_pci_host_res, }; -static struct __initdata platform_device * mtx1_devs[] = { +static struct platform_device *mtx1_devs[] __initdata = { &mtx1_pci_host, &mtx1_gpio_leds, &mtx1_wdt, From aa06a5adb9bbebd0d694008b74233d8db4ebfa21 Mon Sep 17 00:00:00 2001 From: Arnaud Ebalard Date: Sun, 29 Sep 2013 20:36:41 +0200 Subject: [PATCH 376/523] ARM: mvebu: fix ReadyNAS 102 Power button GPIO to make it active high NETGEAR ReadyNAS 102 Power button definition in .dts file flags associated GPIO active low instead of active high. This results in reversed events reported by input subsystem (0 returned when the button is pressed, 1 when released). This patch makes associated GPIO active high to recover correct behaviour. Signed-off-by: Arnaud Ebalard Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-370-netgear-rn102.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/armada-370-netgear-rn102.dts b/arch/arm/boot/dts/armada-370-netgear-rn102.dts index 05e4485a8225..396949d809ac 100644 --- a/arch/arm/boot/dts/armada-370-netgear-rn102.dts +++ b/arch/arm/boot/dts/armada-370-netgear-rn102.dts @@ -160,7 +160,7 @@ button@1 { label = "Power Button"; linux,code = <116>; /* KEY_POWER */ - gpios = <&gpio1 30 1>; + gpios = <&gpio1 30 0>; }; button@2 { From 2832cf2558095854bcefe5a4e3690f4921f9f3a6 Mon Sep 17 00:00:00 2001 From: Arnaud Ebalard Date: Sun, 29 Sep 2013 23:41:43 +0200 Subject: [PATCH 377/523] ARM: mvebu: Add DT entry for ReadyNAS 102 to use gpio-poweroff driver Without that fix, at the end of the shutdown process, the board is still powered (led glowing, fan running, ...). Signed-off-by: Arnaud Ebalard Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-370-netgear-rn102.dts | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm/boot/dts/armada-370-netgear-rn102.dts b/arch/arm/boot/dts/armada-370-netgear-rn102.dts index 396949d809ac..40e73be31720 100644 --- a/arch/arm/boot/dts/armada-370-netgear-rn102.dts +++ b/arch/arm/boot/dts/armada-370-netgear-rn102.dts @@ -57,6 +57,11 @@ marvell,pins = "mpp56"; marvell,function = "gpio"; }; + + poweroff: poweroff { + marvell,pins = "mpp8"; + marvell,function = "gpio"; + }; }; mdio { @@ -176,4 +181,11 @@ }; }; + gpio_poweroff { + compatible = "gpio-poweroff"; + pinctrl-0 = <&poweroff>; + pinctrl-names = "default"; + gpios = <&gpio0 8 1>; + }; + }; From ade37198937a52bc3f59c40ffb14cb6688b273b7 Mon Sep 17 00:00:00 2001 From: Ramkumar Ramachandra Date: Sat, 28 Sep 2013 12:19:55 +0100 Subject: [PATCH 378/523] arm64: include EXT4 in defconfig Most readily available root filesystems are formatted as EXT4 these days. For example, see the raring rootfs that the Debian folk is preparing [1]. [1]: http://people.debian.org/~wookey/bootstrap/rootfs/ Cc: Will Deacon Cc: Andreas Schwab Signed-off-by: Ramkumar Ramachandra Signed-off-by: Catalin Marinas --- arch/arm64/configs/defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 5b3e83217b03..798bcbb31fa7 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -72,6 +72,7 @@ CONFIG_LOGO=y # CONFIG_IOMMU_SUPPORT is not set CONFIG_EXT2_FS=y CONFIG_EXT3_FS=y +CONFIG_EXT4_FS=y # CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set # CONFIG_EXT3_FS_XATTR is not set CONFIG_FUSE_FS=y From 4eb507b874035873dafdb381e61935fed7a8ad85 Mon Sep 17 00:00:00 2001 From: Ramkumar Ramachandra Date: Sat, 28 Sep 2013 12:19:56 +0100 Subject: [PATCH 379/523] arm64: include VIRTIO_{MMIO,BLK} in defconfig Currently, development on arm64 is aided by a Foundation_v8 emulator distributed by ARM [1]. To run their kernels, users will execute: $ ./Foundation_v8 --image linux-system.axf --block-device raring-rootfs To mount the raring-rootfs filesystem, the kernel parameter should typically include: root=/dev/vda For this device to be present, the kernel must be compiled with VIRTIO_{MMIO,BLK}. To make this work out-of-the-box, make it part of the default configuration. [1]: https://silver.arm.com/browse/FM00A Cc: Will Deacon Cc: Andreas Schwab Signed-off-by: Ramkumar Ramachandra Signed-off-by: Catalin Marinas --- arch/arm64/configs/defconfig | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 798bcbb31fa7..31c81e9b792e 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -42,7 +42,7 @@ CONFIG_IP_PNP_BOOTP=y # CONFIG_WIRELESS is not set CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_DEVTMPFS=y -# CONFIG_BLK_DEV is not set +CONFIG_BLK_DEV=y CONFIG_SCSI=y # CONFIG_SCSI_PROC_FS is not set CONFIG_BLK_DEV_SD=y @@ -91,3 +91,5 @@ CONFIG_DEBUG_KERNEL=y CONFIG_DEBUG_INFO=y # CONFIG_FTRACE is not set CONFIG_ATOMIC64_SELFTEST=y +CONFIG_VIRTIO_MMIO=y +CONFIG_VIRTIO_BLK=y From a13699784157624244246996771400ebef91dc4a Mon Sep 17 00:00:00 2001 From: Qipan Li Date: Mon, 23 Sep 2013 23:15:08 +0800 Subject: [PATCH 380/523] ARM: dts: sirf: fix fifosize, clks, dma channels for UART sirf uart and usp-based uart driver with full dma support has hit 3.12, here we fix the fifosize, dma channels for some HW prop. Signed-off-by: Qipan Li Signed-off-by: Barry Song Signed-off-by: Olof Johansson --- arch/arm/boot/dts/atlas6.dtsi | 10 ++++++++++ arch/arm/boot/dts/prima2.dtsi | 22 +++++++++++++++++++--- 2 files changed, 29 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/atlas6.dtsi b/arch/arm/boot/dts/atlas6.dtsi index 8678e0c11119..3dccc3ab33a3 100644 --- a/arch/arm/boot/dts/atlas6.dtsi +++ b/arch/arm/boot/dts/atlas6.dtsi @@ -181,6 +181,8 @@ interrupts = <17>; fifosize = <128>; clocks = <&clks 13>; + sirf,uart-dma-rx-channel = <21>; + sirf,uart-dma-tx-channel = <2>; }; uart1: uart@b0060000 { @@ -199,6 +201,8 @@ interrupts = <19>; fifosize = <128>; clocks = <&clks 15>; + sirf,uart-dma-rx-channel = <6>; + sirf,uart-dma-tx-channel = <7>; }; usp0: usp@b0080000 { @@ -206,7 +210,10 @@ compatible = "sirf,prima2-usp"; reg = <0xb0080000 0x10000>; interrupts = <20>; + fifosize = <128>; clocks = <&clks 28>; + sirf,usp-dma-rx-channel = <17>; + sirf,usp-dma-tx-channel = <18>; }; usp1: usp@b0090000 { @@ -214,7 +221,10 @@ compatible = "sirf,prima2-usp"; reg = <0xb0090000 0x10000>; interrupts = <21>; + fifosize = <128>; clocks = <&clks 29>; + sirf,usp-dma-rx-channel = <14>; + sirf,usp-dma-tx-channel = <15>; }; dmac0: dma-controller@b00b0000 { diff --git a/arch/arm/boot/dts/prima2.dtsi b/arch/arm/boot/dts/prima2.dtsi index bbeb623fc2c6..c52faea063a2 100644 --- a/arch/arm/boot/dts/prima2.dtsi +++ b/arch/arm/boot/dts/prima2.dtsi @@ -196,25 +196,32 @@ uart0: uart@b0050000 { cell-index = <0>; compatible = "sirf,prima2-uart"; - reg = <0xb0050000 0x10000>; + reg = <0xb0050000 0x1000>; interrupts = <17>; + fifosize = <128>; clocks = <&clks 13>; + sirf,uart-dma-rx-channel = <21>; + sirf,uart-dma-tx-channel = <2>; }; uart1: uart@b0060000 { cell-index = <1>; compatible = "sirf,prima2-uart"; - reg = <0xb0060000 0x10000>; + reg = <0xb0060000 0x1000>; interrupts = <18>; + fifosize = <32>; clocks = <&clks 14>; }; uart2: uart@b0070000 { cell-index = <2>; compatible = "sirf,prima2-uart"; - reg = <0xb0070000 0x10000>; + reg = <0xb0070000 0x1000>; interrupts = <19>; + fifosize = <128>; clocks = <&clks 15>; + sirf,uart-dma-rx-channel = <6>; + sirf,uart-dma-tx-channel = <7>; }; usp0: usp@b0080000 { @@ -222,7 +229,10 @@ compatible = "sirf,prima2-usp"; reg = <0xb0080000 0x10000>; interrupts = <20>; + fifosize = <128>; clocks = <&clks 28>; + sirf,usp-dma-rx-channel = <17>; + sirf,usp-dma-tx-channel = <18>; }; usp1: usp@b0090000 { @@ -230,7 +240,10 @@ compatible = "sirf,prima2-usp"; reg = <0xb0090000 0x10000>; interrupts = <21>; + fifosize = <128>; clocks = <&clks 29>; + sirf,usp-dma-rx-channel = <14>; + sirf,usp-dma-tx-channel = <15>; }; usp2: usp@b00a0000 { @@ -238,7 +251,10 @@ compatible = "sirf,prima2-usp"; reg = <0xb00a0000 0x10000>; interrupts = <22>; + fifosize = <128>; clocks = <&clks 30>; + sirf,usp-dma-rx-channel = <10>; + sirf,usp-dma-tx-channel = <11>; }; dmac0: dma-controller@b00b0000 { From 3349a4b9019b57876b25c694025d96f519b795bc Mon Sep 17 00:00:00 2001 From: Barry Song Date: Mon, 23 Sep 2013 23:42:02 +0800 Subject: [PATCH 381/523] ARM: dts: makefile: build atlas6-evb.dtb for ARCH_ATLAS6 Makefile missed to include atlas6-evb.dtb for ARCH_ATLAS6. Signed-off-by: Barry Song Signed-off-by: Olof Johansson --- arch/arm/boot/dts/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index e95af3f5433b..802720e3e8fd 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -41,6 +41,8 @@ dtb-$(CONFIG_ARCH_AT91) += sama5d33ek.dtb dtb-$(CONFIG_ARCH_AT91) += sama5d34ek.dtb dtb-$(CONFIG_ARCH_AT91) += sama5d35ek.dtb +dtb-$(CONFIG_ARCH_ATLAS6) += atlas6-evb.dtb + dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-b.dtb dtb-$(CONFIG_ARCH_BCM) += bcm11351-brt.dtb \ bcm28155-ap.dtb From 9e85b9d1006738a45123ea3fe92ad74e5622ffbc Mon Sep 17 00:00:00 2001 From: Barry Song Date: Tue, 24 Sep 2013 00:04:18 +0800 Subject: [PATCH 382/523] ARM: dts: sirf: fix the ranges of peri-iobrg of prima2 we lost an address range <0x56000000 0x56000000 0x1b00000> for peri-iobg of prima2. Signed-off-by: Barry Song Signed-off-by: Olof Johansson --- arch/arm/boot/dts/prima2.dtsi | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/prima2.dtsi b/arch/arm/boot/dts/prima2.dtsi index c52faea063a2..a88eda93bccb 100644 --- a/arch/arm/boot/dts/prima2.dtsi +++ b/arch/arm/boot/dts/prima2.dtsi @@ -171,7 +171,8 @@ compatible = "simple-bus"; #address-cells = <1>; #size-cells = <1>; - ranges = <0xb0000000 0xb0000000 0x180000>; + ranges = <0xb0000000 0xb0000000 0x180000>, + <0x56000000 0x56000000 0x1b00000>; timer@b0020000 { compatible = "sirf,prima2-tick"; From 262bcc1d6f8a1b0077eaca00d0834c03573f1b92 Mon Sep 17 00:00:00 2001 From: Renwei Wu Date: Mon, 23 Sep 2013 23:57:11 +0800 Subject: [PATCH 383/523] ARM: dts: sirf: fix interrupt and dma prop of VIP for prima2 and atlas6 the current dts is lacking interrupt and dma prop for video input processor of prima2 and atlas6, this patch fixes it. Signed-off-by: Renwei Wu Signed-off-by: Barry Song Signed-off-by: Olof Johansson --- arch/arm/boot/dts/atlas6.dtsi | 2 ++ arch/arm/boot/dts/prima2.dtsi | 2 ++ 2 files changed, 4 insertions(+) diff --git a/arch/arm/boot/dts/atlas6.dtsi b/arch/arm/boot/dts/atlas6.dtsi index 3dccc3ab33a3..6db4f81d4795 100644 --- a/arch/arm/boot/dts/atlas6.dtsi +++ b/arch/arm/boot/dts/atlas6.dtsi @@ -247,6 +247,8 @@ compatible = "sirf,prima2-vip"; reg = <0xb00C0000 0x10000>; clocks = <&clks 31>; + interrupts = <14>; + sirf,vip-dma-rx-channel = <16>; }; spi0: spi@b00d0000 { diff --git a/arch/arm/boot/dts/prima2.dtsi b/arch/arm/boot/dts/prima2.dtsi index a88eda93bccb..27ed9f5144bc 100644 --- a/arch/arm/boot/dts/prima2.dtsi +++ b/arch/arm/boot/dts/prima2.dtsi @@ -278,6 +278,8 @@ compatible = "sirf,prima2-vip"; reg = <0xb00C0000 0x10000>; clocks = <&clks 31>; + interrupts = <14>; + sirf,vip-dma-rx-channel = <16>; }; spi0: spi@b00d0000 { From 64270d82d4bf7fb8e5347c41ea7d0477aa551391 Mon Sep 17 00:00:00 2001 From: Lorenzo Pieralisi Date: Fri, 27 Sep 2013 16:54:42 +0100 Subject: [PATCH 384/523] ARM: vexpress: tc2: fix hotplug/idle/kexec race on cluster power down On the TC2 testchip, when all CPUs in a cluster enter standbywfi and commit a power down request, the power controller will wait for standbywfil2 coming from L2 cache controller to shut the cluster down. By the time all CPUs in a cluster commit a power down request and enter wfi, the power controller cannot backtrack, or put it another way, a CPU must not be allowed to complete execution independently of the power controller, the only way for it to resume properly must be upon wake-up IRQ pending and subsequent reset triggered from the power controller. Current MCPM back-end for TC2 disables the GIC CPU IF only when power down is committed through the tc2_pm_suspend() method, that makes sense since a suspended CPU is still online and can receive interrupts whereas a hotplugged CPU, since it is offline, migrated all IRQs and shutdown the per-CPU peripherals, hence their PPIs. The flaw with this reasoning is the following. If all CPUs in a clusters are entering a power down state either through CPU idle or CPU hotplug, when the last man successfully completes the MCPM power down sequence (and executes wfi), power controller waits for L2 wfi signal to quiesce the cluster and shut it down. If, when all CPUs are sitting in wfi, an online CPU hotplugs back in one of the CPUs in the cluster being shutdown, that CPU receives an IPI that causes wfi to complete (since tc2_pm_down() method does not disable the GIC CPU IF in that case - CPU being hotplugged out, not idle) and the power controller will never see the stanbywfil2 signal coming from L2 that is required for shutdown to happen and the system deadlocks. Further to this issue, kexec hotplugs secondary CPUs out during kernel reload/restart. Because kexec may (deliberately) trash the old kernel text, it is not OK for CPUs to follow the MCPM soft reboot path, since instructions after the WFI may have been replaced by kexec. If tc2_pm_down() does not disable the GIC cpu interface, there is a race between CPU powerdown in the old kernel and the IPI from the new kernel that triggers secondary boot, particularly if the powerdown is slow (due to L2 cache cleaning for example). If the new kernel wins the race, the affected CPU(s) will not really be reset and may execute garbage after the WFI. The only solution to this problem consists in disabling the GIC CPU IF on a CPU committed to power down regardless of the power down entry method (CPU hotplug or CPU idle). This way, CPU wake-up is under power controller control, which prevents unexpected wfi exit caused by a pending IRQ. This patch moves the GIC CPU IF disable call in the TC2 MCPM implementation from the tc2_pm_suspend() method to the tc2_pm_down() method to fix the mentioned race condition(s). Reviewed-by: Dave Martin Tested-by: Dave Martin (for kexec) Signed-off-by: Sudeep KarkadaNagesha Signed-off-by: Lorenzo Pieralisi Acked-by: Nicolas Pitre Signed-off-by: Olof Johansson --- arch/arm/mach-vexpress/tc2_pm.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-vexpress/tc2_pm.c b/arch/arm/mach-vexpress/tc2_pm.c index 7aeb5d60e484..e6eb48192912 100644 --- a/arch/arm/mach-vexpress/tc2_pm.c +++ b/arch/arm/mach-vexpress/tc2_pm.c @@ -131,6 +131,16 @@ static void tc2_pm_down(u64 residency) } else BUG(); + /* + * If the CPU is committed to power down, make sure + * the power controller will be in charge of waking it + * up upon IRQ, ie IRQ lines are cut from GIC CPU IF + * to the CPU by disabling the GIC CPU IF to prevent wfi + * from completing execution behind power controller back + */ + if (!skip_wfi) + gic_cpu_if_down(); + if (last_man && __mcpm_outbound_enter_critical(cpu, cluster)) { arch_spin_unlock(&tc2_pm_lock); @@ -231,7 +241,6 @@ static void tc2_pm_suspend(u64 residency) cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); ve_spc_set_resume_addr(cluster, cpu, virt_to_phys(mcpm_entry_point)); - gic_cpu_if_down(); tc2_pm_down(residency); } From 6cdaca481f6c415025c2687c109674919aa61934 Mon Sep 17 00:00:00 2001 From: Joel Fernandes Date: Thu, 26 Sep 2013 16:55:46 -0500 Subject: [PATCH 385/523] ARM: edma: Fix clearing of unused list for DT DMA resources HWMOD removal for MMC is breaking edma_start as the events are being manually triggered due to unused channel list not being clear. The above issue is fixed by reading the "dmas" property from the DT node if it exists and clearing the bits in the unused channel list if the dma controller used by any device is EDMA. For this purpose we use the of_* helpers to parse the arguments in the dmas phandle list. Also introduced is a minor clean up of a checkpatch error in old code. Reviewed-by: Sekhar Nori Reported-by: Balaji T K Cc: Sekhar Nori Cc: Tony Lindgren Cc: Olof Johansson Cc: Nishanth Menon Cc: Pantel Antoniou Cc: Jason Kridner Cc: Koen Kooi Signed-off-by: Joel Fernandes Signed-off-by: Olof Johansson --- arch/arm/common/edma.c | 38 +++++++++++++++++++++++++++++++------- 1 file changed, 31 insertions(+), 7 deletions(-) diff --git a/arch/arm/common/edma.c b/arch/arm/common/edma.c index 117f955a2a06..8e1a0245907f 100644 --- a/arch/arm/common/edma.c +++ b/arch/arm/common/edma.c @@ -269,6 +269,11 @@ static const struct edmacc_param dummy_paramset = { .ccnt = 1, }; +static const struct of_device_id edma_of_ids[] = { + { .compatible = "ti,edma3", }, + {} +}; + /*****************************************************************************/ static void map_dmach_queue(unsigned ctlr, unsigned ch_no, @@ -560,14 +565,38 @@ static int reserve_contiguous_slots(int ctlr, unsigned int id, static int prepare_unused_channel_list(struct device *dev, void *data) { struct platform_device *pdev = to_platform_device(dev); - int i, ctlr; + int i, count, ctlr; + struct of_phandle_args dma_spec; + if (dev->of_node) { + count = of_property_count_strings(dev->of_node, "dma-names"); + if (count < 0) + return 0; + for (i = 0; i < count; i++) { + if (of_parse_phandle_with_args(dev->of_node, "dmas", + "#dma-cells", i, + &dma_spec)) + continue; + + if (!of_match_node(edma_of_ids, dma_spec.np)) { + of_node_put(dma_spec.np); + continue; + } + + clear_bit(EDMA_CHAN_SLOT(dma_spec.args[0]), + edma_cc[0]->edma_unused); + of_node_put(dma_spec.np); + } + return 0; + } + + /* For non-OF case */ for (i = 0; i < pdev->num_resources; i++) { if ((pdev->resource[i].flags & IORESOURCE_DMA) && (int)pdev->resource[i].start >= 0) { ctlr = EDMA_CTLR(pdev->resource[i].start); clear_bit(EDMA_CHAN_SLOT(pdev->resource[i].start), - edma_cc[ctlr]->edma_unused); + edma_cc[ctlr]->edma_unused); } } @@ -1762,11 +1791,6 @@ static int edma_probe(struct platform_device *pdev) return 0; } -static const struct of_device_id edma_of_ids[] = { - { .compatible = "ti,edma3", }, - {} -}; - static struct platform_driver edma_driver = { .driver = { .name = "edma", From 05f30e8dfa704e4bfff91856f74b6486ce89a2d1 Mon Sep 17 00:00:00 2001 From: Barry Song <21cnbao@gmail.com> Date: Sun, 29 Sep 2013 22:45:09 +0800 Subject: [PATCH 386/523] MAINTAINERS: ARM: SIRF: add missed drivers into maintain list Take more drivers into maintain list of CSR SiRF SoC machines. Signed-off-by: Barry Song Signed-off-by: Olof Johansson --- MAINTAINERS | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index e61c2e83fc2b..a663819423d8 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -829,10 +829,16 @@ L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) T: git git://git.kernel.org/pub/scm/linux/kernel/git/baohua/linux.git S: Maintained F: arch/arm/mach-prima2/ +F: drivers/clk/clk-prima2.c +F: drivers/clocksource/timer-prima2.c +F: drivers/clocksource/timer-marco.c F: drivers/dma/sirf-dma.c F: drivers/i2c/busses/i2c-sirf.c +F: drivers/input/misc/sirfsoc-onkey.c +F: drivers/irqchip/irq-sirfsoc.c F: drivers/mmc/host/sdhci-sirf.c F: drivers/pinctrl/sirf/ +F: drivers/rtc/rtc-sirfsoc.c F: drivers/spi/spi-sirf.c ARM/EBSA110 MACHINE SUPPORT From 5abf58bf4cd0ab32b9737ea3d1cb6439ab646ad6 Mon Sep 17 00:00:00 2001 From: Barry Song <21cnbao@gmail.com> Date: Sun, 29 Sep 2013 22:45:10 +0800 Subject: [PATCH 387/523] MAINTAINERS: ARM: SIRF: use kernel.org mail box Change my email to kernel.org which is easier for me to catch. Signed-off-by: Barry Song Signed-off-by: Olof Johansson --- MAINTAINERS | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index a663819423d8..9d96b9c16c76 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -824,7 +824,7 @@ S: Maintained F: arch/arm/mach-gemini/ ARM/CSR SIRFPRIMA2 MACHINE SUPPORT -M: Barry Song +M: Barry Song L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) T: git git://git.kernel.org/pub/scm/linux/kernel/git/baohua/linux.git S: Maintained From bd737fea4e49b7c0e848e3765c6b45a858de41a8 Mon Sep 17 00:00:00 2001 From: Jean-Christophe PLAGNIOL-VILLARD Date: Fri, 27 Sep 2013 08:37:59 +0200 Subject: [PATCH 388/523] ARM: at91: sam9g45: shutdown ddr1 too when rebooting Like we are doing on DDR0 we need to cleanly shutdown DDR1 if it is used before rebooting. If DDR1 is not initialized, we check it and avoid dereferencing its address. Even by adding two more instructions, we are able to complete the procedure within a single cache line. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Nicolas Ferre Signed-off-by: Olof Johansson --- arch/arm/mach-at91/at91sam9g45_reset.S | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/mach-at91/at91sam9g45_reset.S b/arch/arm/mach-at91/at91sam9g45_reset.S index 721a1a34dd1d..c40c1e2ef80f 100644 --- a/arch/arm/mach-at91/at91sam9g45_reset.S +++ b/arch/arm/mach-at91/at91sam9g45_reset.S @@ -16,11 +16,17 @@ #include "at91_rstc.h" .arm +/* + * at91_ramc_base is an array void* + * init at NULL if only one DDR controler is present in or DT + */ .globl at91sam9g45_restart at91sam9g45_restart: ldr r5, =at91_ramc_base @ preload constants ldr r0, [r5] + ldr r5, [r5, #4] @ ddr1 + cmp r5, #0 ldr r4, =at91_rstc_base ldr r1, [r4] @@ -30,6 +36,8 @@ at91sam9g45_restart: .balign 32 @ align to cache line + strne r2, [r5, #AT91_DDRSDRC_RTR] @ disable DDR1 access + strne r3, [r5, #AT91_DDRSDRC_LPR] @ power down DDR1 str r2, [r0, #AT91_DDRSDRC_RTR] @ disable DDR0 access str r3, [r0, #AT91_DDRSDRC_LPR] @ power down DDR0 str r4, [r1, #AT91_RSTC_CR] @ reset processor From aab1728915420b5288cd0fc7b5bd320105b48983 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 30 Sep 2013 19:40:56 +0200 Subject: [PATCH 389/523] PM / hibernate: Fix user space driven resume regression Recent commit 8fd37a4 (PM / hibernate: Create memory bitmaps after freezing user space) broke the resume part of the user space driven hibernation (s2disk), because I forgot that the resume utility loaded the image into memory without freezing user space (it still freezes tasks after loading the image). This means that during user space driven resume we need to create the memory bitmaps at the "device open" time rather than at the "freeze tasks" time, so make that happen (that's a special case anyway, so it needs to be treated in a special way). Reported-and-tested-by: Ronald Signed-off-by: Rafael J. Wysocki --- kernel/power/snapshot.c | 5 ++++- kernel/power/user.c | 8 ++++++++ 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index 358a146fd4da..98c3b34a4cff 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -743,7 +743,10 @@ int create_basic_memory_bitmaps(void) struct memory_bitmap *bm1, *bm2; int error = 0; - BUG_ON(forbidden_pages_map || free_pages_map); + if (forbidden_pages_map && free_pages_map) + return 0; + else + BUG_ON(forbidden_pages_map || free_pages_map); bm1 = kzalloc(sizeof(struct memory_bitmap), GFP_KERNEL); if (!bm1) diff --git a/kernel/power/user.c b/kernel/power/user.c index 72e8f4fd616d..957f06164ad1 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -39,6 +39,7 @@ static struct snapshot_data { char frozen; char ready; char platform_support; + bool free_bitmaps; } snapshot_state; atomic_t snapshot_device_available = ATOMIC_INIT(1); @@ -82,6 +83,10 @@ static int snapshot_open(struct inode *inode, struct file *filp) data->swap = -1; data->mode = O_WRONLY; error = pm_notifier_call_chain(PM_RESTORE_PREPARE); + if (!error) { + error = create_basic_memory_bitmaps(); + data->free_bitmaps = !error; + } if (error) pm_notifier_call_chain(PM_POST_RESTORE); } @@ -111,6 +116,8 @@ static int snapshot_release(struct inode *inode, struct file *filp) pm_restore_gfp_mask(); free_basic_memory_bitmaps(); thaw_processes(); + } else if (data->free_bitmaps) { + free_basic_memory_bitmaps(); } pm_notifier_call_chain(data->mode == O_RDONLY ? PM_POST_HIBERNATION : PM_POST_RESTORE); @@ -231,6 +238,7 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd, break; pm_restore_gfp_mask(); free_basic_memory_bitmaps(); + data->free_bitmaps = false; thaw_processes(); data->frozen = 0; break; From bb25f13aed6c76df3c0004789485b7c4919ce47a Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Thu, 26 Sep 2013 10:56:42 +0530 Subject: [PATCH 390/523] cpufreq: SPEAr: Fix incorrect variable type 'clk_round_rate' returns a negative error code upon failure. This will never get detected by unsigned 'newfreq'. Make it signed. Signed-off-by: Sachin Kamat Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/spear-cpufreq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/spear-cpufreq.c b/drivers/cpufreq/spear-cpufreq.c index 19e364fa5955..3f418166ce02 100644 --- a/drivers/cpufreq/spear-cpufreq.c +++ b/drivers/cpufreq/spear-cpufreq.c @@ -113,7 +113,7 @@ static int spear_cpufreq_target(struct cpufreq_policy *policy, unsigned int target_freq, unsigned int relation) { struct cpufreq_freqs freqs; - unsigned long newfreq; + long newfreq; struct clk *srcclk; int index, ret, mult = 1; From 43c638e3dd48ff1b1a93ea01c98e258e693880c3 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Thu, 26 Sep 2013 11:19:37 +0200 Subject: [PATCH 391/523] cpufreq: cpufreq-cpu0: NULL is a valid regulator, part 2 Since the patch "cpufreq: cpufreq-cpu0: NULL is a valid regulator", cpu_reg contains an error value if the regulator is not set, instead of NULL. Accordingly, fix the remaining check for non-NULL cpu_reg. Signed-off-by: Philipp Zabel Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq-cpu0.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c index 78c49d8e0f4a..c522a95c0e16 100644 --- a/drivers/cpufreq/cpufreq-cpu0.c +++ b/drivers/cpufreq/cpufreq-cpu0.c @@ -229,7 +229,7 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev) if (of_property_read_u32(np, "clock-latency", &transition_latency)) transition_latency = CPUFREQ_ETERNAL; - if (cpu_reg) { + if (!IS_ERR(cpu_reg)) { struct opp *opp; unsigned long min_uV, max_uV; int i; From 559835ea7292e2f09304d81eda16f4209433245e Mon Sep 17 00:00:00 2001 From: Pravin B Shelar Date: Tue, 24 Sep 2013 10:25:40 -0700 Subject: [PATCH 392/523] vxlan: Use RCU apis to access sk_user_data. Use of RCU api makes vxlan code easier to understand. It also fixes bug due to missing ACCESS_ONCE() on sk_user_data dereference. In rare case without ACCESS_ONCE() compiler might omit vs on sk_user_data dereference. Compiler can use vs as alias for sk->sk_user_data, resulting in multiple sk_user_data dereference in rcu read context which could change. CC: Jesse Gross Signed-off-by: Pravin B Shelar Signed-off-by: David S. Miller --- drivers/net/vxlan.c | 9 +++------ include/net/sock.h | 5 +++++ 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index d1292fe746bc..2ef5b6219f3f 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -952,8 +952,7 @@ void vxlan_sock_release(struct vxlan_sock *vs) spin_lock(&vn->sock_lock); hlist_del_rcu(&vs->hlist); - smp_wmb(); - vs->sock->sk->sk_user_data = NULL; + rcu_assign_sk_user_data(vs->sock->sk, NULL); vxlan_notify_del_rx_port(sk); spin_unlock(&vn->sock_lock); @@ -1048,8 +1047,7 @@ static int vxlan_udp_encap_recv(struct sock *sk, struct sk_buff *skb) port = inet_sk(sk)->inet_sport; - smp_read_barrier_depends(); - vs = (struct vxlan_sock *)sk->sk_user_data; + vs = rcu_dereference_sk_user_data(sk); if (!vs) goto drop; @@ -2302,8 +2300,7 @@ static struct vxlan_sock *vxlan_socket_create(struct net *net, __be16 port, atomic_set(&vs->refcnt, 1); vs->rcv = rcv; vs->data = data; - smp_wmb(); - vs->sock->sk->sk_user_data = vs; + rcu_assign_sk_user_data(vs->sock->sk, vs); spin_lock(&vn->sock_lock); hlist_add_head_rcu(&vs->hlist, vs_head(net, port)); diff --git a/include/net/sock.h b/include/net/sock.h index 6ba2e7b0e2b1..1d37a8086bed 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -409,6 +409,11 @@ struct sock { void (*sk_destruct)(struct sock *sk); }; +#define __sk_user_data(sk) ((*((void __rcu **)&(sk)->sk_user_data))) + +#define rcu_dereference_sk_user_data(sk) rcu_dereference(__sk_user_data((sk))) +#define rcu_assign_sk_user_data(sk, ptr) rcu_assign_pointer(__sk_user_data((sk)), ptr) + /* * SK_CAN_REUSE and SK_NO_REUSE on a socket mean that the socket is OK * or not whether his port will be reused by someone else. SK_FORCE_REUSE From 894116bd0e9b7749a0c4b6c62dec13c2a0ccef68 Mon Sep 17 00:00:00 2001 From: Aida Mynzhasova Date: Wed, 25 Sep 2013 11:24:23 +0400 Subject: [PATCH 393/523] powerpc/83xx: gianfar_ptp: select 1588 clock source through dts file Currently IEEE 1588 timer reference clock source is determined through hard-coded value in gianfar_ptp driver. This patch allows to select ptp clock source by means of device tree file node. For instance: fsl,cksel = <0>; for using external (TSEC_TMR_CLK input) high precision timer reference clock. Other acceptable values: <1> : eTSEC system clock <2> : eTSEC1 transmit clock <3> : RTC clock input When this attribute isn't used, eTSEC system clock will serve as IEEE 1588 timer reference clock. Signed-off-by: Aida Mynzhasova Acked-by: Richard Cochran Signed-off-by: David S. Miller --- .../devicetree/bindings/net/fsl-tsec-phy.txt | 16 +++++++++++++++- drivers/net/ethernet/freescale/gianfar_ptp.c | 4 +++- 2 files changed, 18 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt b/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt index 2c6be0377f55..eb06059f3cf3 100644 --- a/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt +++ b/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt @@ -86,6 +86,7 @@ General Properties: Clock Properties: + - fsl,cksel Timer reference clock source. - fsl,tclk-period Timer reference clock period in nanoseconds. - fsl,tmr-prsc Prescaler, divides the output clock. - fsl,tmr-add Frequency compensation value. @@ -97,7 +98,7 @@ Clock Properties: clock. You must choose these carefully for the clock to work right. Here is how to figure good values: - TimerOsc = system clock MHz + TimerOsc = selected reference clock MHz tclk_period = desired clock period nanoseconds NominalFreq = 1000 / tclk_period MHz FreqDivRatio = TimerOsc / NominalFreq (must be greater that 1.0) @@ -114,6 +115,18 @@ Clock Properties: Pulse Per Second (PPS) signal, since this will be offered to the PPS subsystem to synchronize the Linux clock. + "fsl,cksel" property allows to select different reference clock + sources: + + <0> - external high precision timer reference clock (TSEC_TMR_CLK + input is used for this purpose); + <1> - eTSEC system clock; + <2> - eTSEC1 transmit clock; + <3> - RTC clock input. + + When this attribute is not used, eTSEC system clock will serve as + IEEE 1588 timer reference clock. + Example: ptp_clock@24E00 { @@ -121,6 +134,7 @@ Example: reg = <0x24E00 0xB0>; interrupts = <12 0x8 13 0x8>; interrupt-parent = < &ipic >; + fsl,cksel = <1>; fsl,tclk-period = <10>; fsl,tmr-prsc = <100>; fsl,tmr-add = <0x999999A4>; diff --git a/drivers/net/ethernet/freescale/gianfar_ptp.c b/drivers/net/ethernet/freescale/gianfar_ptp.c index 098f133908ae..e006a09ba899 100644 --- a/drivers/net/ethernet/freescale/gianfar_ptp.c +++ b/drivers/net/ethernet/freescale/gianfar_ptp.c @@ -452,7 +452,9 @@ static int gianfar_ptp_probe(struct platform_device *dev) err = -ENODEV; etsects->caps = ptp_gianfar_caps; - etsects->cksel = DEFAULT_CKSEL; + + if (get_of_u32(node, "fsl,cksel", &etsects->cksel)) + etsects->cksel = DEFAULT_CKSEL; if (get_of_u32(node, "fsl,tclk-period", &etsects->tclk_period) || get_of_u32(node, "fsl,tmr-prsc", &etsects->tmr_prsc) || From 2d77f343343c4f38b8f94be1964bbbc6456a147f Mon Sep 17 00:00:00 2001 From: Aleksander Morgado Date: Wed, 25 Sep 2013 17:02:36 +0200 Subject: [PATCH 394/523] net: qmi_wwan: fix Cinterion PLXX product ID MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cinterion PLXX LTE devices have a 0x0060 product ID, not 0x12d1. The blacklisting in the serial/option driver does actually use the correct PID, as per commit 8ff10bdb14a52e3f25d4ce09e0582a8684c1a6db ('USB: Blacklisted Cinterion's PLxx WWAN Interface'). CC: Hans-Christoph Schemmel CC: Christian Schmiedl CC: Nicolaus Colberg Signed-off-by: Aleksander Morgado Acked-by: Bjørn Mork Acked-by: Christian Schmiedl Signed-off-by: David S. Miller --- drivers/net/usb/qmi_wwan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index 6312332afeba..3d6aaf79d8b2 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -714,7 +714,7 @@ static const struct usb_device_id products[] = { {QMI_FIXED_INTF(0x2357, 0x0201, 4)}, /* TP-LINK HSUPA Modem MA180 */ {QMI_FIXED_INTF(0x2357, 0x9000, 4)}, /* TP-LINK MA260 */ {QMI_FIXED_INTF(0x1bc7, 0x1200, 5)}, /* Telit LE920 */ - {QMI_FIXED_INTF(0x1e2d, 0x12d1, 4)}, /* Cinterion PLxx */ + {QMI_FIXED_INTF(0x1e2d, 0x0060, 4)}, /* Cinterion PLxx */ /* 4. Gobi 1000 devices */ {QMI_GOBI1K_DEVICE(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */ From d4a71b155c12d0d429c6b69d94076d6d57e2a7a7 Mon Sep 17 00:00:00 2001 From: Pravin B Shelar Date: Wed, 25 Sep 2013 09:57:47 -0700 Subject: [PATCH 395/523] ip_tunnel: Do not use stale inner_iph pointer. While sending packet skb_cow_head() can change skb header which invalidates inner_iph pointer to skb header. Following patch avoid using it. Found by code inspection. This bug was introduced by commit 0e6fbc5b6c6218 (ip_tunnels: extend iptunnel_xmit()). Signed-off-by: Pravin B Shelar Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/ip_tunnel.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index ac9fabe0300f..d3fbad422e0e 100644 --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -623,6 +623,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev, tunnel->err_count = 0; } + tos = ip_tunnel_ecn_encap(tos, inner_iph, skb); ttl = tnl_params->ttl; if (ttl == 0) { if (skb->protocol == htons(ETH_P_IP)) @@ -651,8 +652,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev, } err = iptunnel_xmit(rt, skb, fl4.saddr, fl4.daddr, protocol, - ip_tunnel_ecn_encap(tos, inner_iph, skb), ttl, df, - !net_eq(tunnel->net, dev_net(dev))); + tos, ttl, df, !net_eq(tunnel->net, dev_net(dev))); iptunnel_xmit_stats(err, &dev->stats, dev->tstats); return; From c9d55d5bff05084b5829f751aebd03d0c8f632f5 Mon Sep 17 00:00:00 2001 From: Paul Marks Date: Wed, 25 Sep 2013 15:12:55 -0700 Subject: [PATCH 396/523] ipv6: Fix preferred_lft not updating in some cases Consider the scenario where an IPv6 router is advertising a fixed preferred_lft of 1800 seconds, while the valid_lft begins at 3600 seconds and counts down in realtime. A client should reset its preferred_lft to 1800 every time the RA is received, but a bug is causing Linux to ignore the update. The core problem is here: if (prefered_lft != ifp->prefered_lft) { Note that ifp->prefered_lft is an offset, so it doesn't decrease over time. Thus, the comparison is always (1800 != 1800), which fails to trigger an update. The most direct solution would be to compute a "stored_prefered_lft", and use that value in the comparison. But I think that trying to filter out unnecessary updates here is a premature optimization. In order for the filter to apply, both of these would need to hold: - The advertised valid_lft and preferred_lft are both declining in real time. - No clock skew exists between the router & client. So in this patch, I've set "update_lft = 1" unconditionally, which allows the surrounding code to be greatly simplified. Signed-off-by: Paul Marks Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- net/ipv6/addrconf.c | 52 +++++++++++++-------------------------------- 1 file changed, 15 insertions(+), 37 deletions(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index a0c3abe72461..cd3fb301da38 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2220,43 +2220,21 @@ ok: else stored_lft = 0; if (!update_lft && !create && stored_lft) { - if (valid_lft > MIN_VALID_LIFETIME || - valid_lft > stored_lft) - update_lft = 1; - else if (stored_lft <= MIN_VALID_LIFETIME) { - /* valid_lft <= stored_lft is always true */ - /* - * RFC 4862 Section 5.5.3e: - * "Note that the preferred lifetime of - * the corresponding address is always - * reset to the Preferred Lifetime in - * the received Prefix Information - * option, regardless of whether the - * valid lifetime is also reset or - * ignored." - * - * So if the preferred lifetime in - * this advertisement is different - * than what we have stored, but the - * valid lifetime is invalid, just - * reset prefered_lft. - * - * We must set the valid lifetime - * to the stored lifetime since we'll - * be updating the timestamp below, - * else we'll set it back to the - * minimum. - */ - if (prefered_lft != ifp->prefered_lft) { - valid_lft = stored_lft; - update_lft = 1; - } - } else { - valid_lft = MIN_VALID_LIFETIME; - if (valid_lft < prefered_lft) - prefered_lft = valid_lft; - update_lft = 1; - } + const u32 minimum_lft = min( + stored_lft, (u32)MIN_VALID_LIFETIME); + valid_lft = max(valid_lft, minimum_lft); + + /* RFC4862 Section 5.5.3e: + * "Note that the preferred lifetime of the + * corresponding address is always reset to + * the Preferred Lifetime in the received + * Prefix Information option, regardless of + * whether the valid lifetime is also reset or + * ignored." + * + * So we should always update prefered_lft here. + */ + update_lft = 1; } if (update_lft) { From ea732dff5cfa10789007bf4a5b935388a0bb2a8f Mon Sep 17 00:00:00 2001 From: Paul Durrant Date: Thu, 26 Sep 2013 12:09:52 +0100 Subject: [PATCH 397/523] xen-netback: Handle backend state transitions in a more robust way When the frontend state changes netback now specifies its desired state to a new function, set_backend_state(), which transitions through any necessary intermediate states. This fixes an issue observed with some old Windows frontend drivers where they failed to transition through the Closing state and netback would not behave correctly. Signed-off-by: Paul Durrant Cc: Ian Campbell Cc: Wei Liu Cc: David Vrabel Acked-by: Ian Campbell Signed-off-by: David S. Miller --- drivers/net/xen-netback/xenbus.c | 148 ++++++++++++++++++++++++------- 1 file changed, 118 insertions(+), 30 deletions(-) diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c index a53782ef1540..b45bce20ad76 100644 --- a/drivers/net/xen-netback/xenbus.c +++ b/drivers/net/xen-netback/xenbus.c @@ -24,6 +24,12 @@ struct backend_info { struct xenbus_device *dev; struct xenvif *vif; + + /* This is the state that will be reflected in xenstore when any + * active hotplug script completes. + */ + enum xenbus_state state; + enum xenbus_state frontend_state; struct xenbus_watch hotplug_status_watch; u8 have_hotplug_status_watch:1; @@ -136,6 +142,8 @@ static int netback_probe(struct xenbus_device *dev, if (err) goto fail; + be->state = XenbusStateInitWait; + /* This kicks hotplug scripts, so do it immediately. */ backend_create_xenvif(be); @@ -208,24 +216,113 @@ static void backend_create_xenvif(struct backend_info *be) kobject_uevent(&dev->dev.kobj, KOBJ_ONLINE); } - -static void disconnect_backend(struct xenbus_device *dev) +static void backend_disconnect(struct backend_info *be) { - struct backend_info *be = dev_get_drvdata(&dev->dev); - if (be->vif) xenvif_disconnect(be->vif); } -static void destroy_backend(struct xenbus_device *dev) +static void backend_connect(struct backend_info *be) { - struct backend_info *be = dev_get_drvdata(&dev->dev); + if (be->vif) + connect(be); +} - if (be->vif) { - kobject_uevent(&dev->dev.kobj, KOBJ_OFFLINE); - xenbus_rm(XBT_NIL, dev->nodename, "hotplug-status"); - xenvif_free(be->vif); - be->vif = NULL; +static inline void backend_switch_state(struct backend_info *be, + enum xenbus_state state) +{ + struct xenbus_device *dev = be->dev; + + pr_debug("%s -> %s\n", dev->nodename, xenbus_strstate(state)); + be->state = state; + + /* If we are waiting for a hotplug script then defer the + * actual xenbus state change. + */ + if (!be->have_hotplug_status_watch) + xenbus_switch_state(dev, state); +} + +/* Handle backend state transitions: + * + * The backend state starts in InitWait and the following transitions are + * allowed. + * + * InitWait -> Connected + * + * ^ \ | + * | \ | + * | \ | + * | \ | + * | \ | + * | \ | + * | V V + * + * Closed <-> Closing + * + * The state argument specifies the eventual state of the backend and the + * function transitions to that state via the shortest path. + */ +static void set_backend_state(struct backend_info *be, + enum xenbus_state state) +{ + while (be->state != state) { + switch (be->state) { + case XenbusStateClosed: + switch (state) { + case XenbusStateInitWait: + case XenbusStateConnected: + pr_info("%s: prepare for reconnect\n", + be->dev->nodename); + backend_switch_state(be, XenbusStateInitWait); + break; + case XenbusStateClosing: + backend_switch_state(be, XenbusStateClosing); + break; + default: + BUG(); + } + break; + case XenbusStateInitWait: + switch (state) { + case XenbusStateConnected: + backend_connect(be); + backend_switch_state(be, XenbusStateConnected); + break; + case XenbusStateClosing: + case XenbusStateClosed: + backend_switch_state(be, XenbusStateClosing); + break; + default: + BUG(); + } + break; + case XenbusStateConnected: + switch (state) { + case XenbusStateInitWait: + case XenbusStateClosing: + case XenbusStateClosed: + backend_disconnect(be); + backend_switch_state(be, XenbusStateClosing); + break; + default: + BUG(); + } + break; + case XenbusStateClosing: + switch (state) { + case XenbusStateInitWait: + case XenbusStateConnected: + case XenbusStateClosed: + backend_switch_state(be, XenbusStateClosed); + break; + default: + BUG(); + } + break; + default: + BUG(); + } } } @@ -237,40 +334,33 @@ static void frontend_changed(struct xenbus_device *dev, { struct backend_info *be = dev_get_drvdata(&dev->dev); - pr_debug("frontend state %s\n", xenbus_strstate(frontend_state)); + pr_debug("%s -> %s\n", dev->otherend, xenbus_strstate(frontend_state)); be->frontend_state = frontend_state; switch (frontend_state) { case XenbusStateInitialising: - if (dev->state == XenbusStateClosed) { - pr_info("%s: prepare for reconnect\n", dev->nodename); - xenbus_switch_state(dev, XenbusStateInitWait); - } + set_backend_state(be, XenbusStateInitWait); break; case XenbusStateInitialised: break; case XenbusStateConnected: - if (dev->state == XenbusStateConnected) - break; - if (be->vif) - connect(be); + set_backend_state(be, XenbusStateConnected); break; case XenbusStateClosing: - disconnect_backend(dev); - xenbus_switch_state(dev, XenbusStateClosing); + set_backend_state(be, XenbusStateClosing); break; case XenbusStateClosed: - xenbus_switch_state(dev, XenbusStateClosed); + set_backend_state(be, XenbusStateClosed); if (xenbus_dev_is_online(dev)) break; - destroy_backend(dev); /* fall through if not online */ case XenbusStateUnknown: + set_backend_state(be, XenbusStateClosed); device_unregister(&dev->dev); break; @@ -363,7 +453,9 @@ static void hotplug_status_changed(struct xenbus_watch *watch, if (IS_ERR(str)) return; if (len == sizeof("connected")-1 && !memcmp(str, "connected", len)) { - xenbus_switch_state(be->dev, XenbusStateConnected); + /* Complete any pending state change */ + xenbus_switch_state(be->dev, be->state); + /* Not interested in this watch anymore. */ unregister_hotplug_status_watch(be); } @@ -393,12 +485,8 @@ static void connect(struct backend_info *be) err = xenbus_watch_pathfmt(dev, &be->hotplug_status_watch, hotplug_status_changed, "%s/%s", dev->nodename, "hotplug-status"); - if (err) { - /* Switch now, since we can't do a watch. */ - xenbus_switch_state(dev, XenbusStateConnected); - } else { + if (!err) be->have_hotplug_status_watch = 1; - } netif_wake_queue(be->vif->dev); } From 8386040b76a46885280b9b19f7080bf7fb558fca Mon Sep 17 00:00:00 2001 From: Wei Liu Date: Thu, 26 Sep 2013 12:41:53 +0100 Subject: [PATCH 398/523] MAINTAINERS: add myself as maintainer of xen-netback Signed-off-by: Wei Liu Acked-by: Ian Campbell Signed-off-by: David S. Miller --- MAINTAINERS | 1 + 1 file changed, 1 insertion(+) diff --git a/MAINTAINERS b/MAINTAINERS index e61c2e83fc2b..3c441cef91b8 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9366,6 +9366,7 @@ F: arch/arm64/include/asm/xen/ XEN NETWORK BACKEND DRIVER M: Ian Campbell +M: Wei Liu L: xen-devel@lists.xenproject.org (moderated for non-subscribers) L: netdev@vger.kernel.org S: Supported From b86783587b3d1d552326d955acee37eac48800f1 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 26 Sep 2013 08:44:06 -0700 Subject: [PATCH 399/523] net: flow_dissector: fix thoff for IPPROTO_AH In commit 8ed781668dd49 ("flow_keys: include thoff into flow_keys for later usage"), we missed that existing code was using nhoff as a temporary variable that could not always contain transport header offset. This is not a problem for TCP/UDP because port offset (@poff) is 0 for these protocols. Signed-off-by: Eric Dumazet Cc: Daniel Borkmann Cc: Nikolay Aleksandrov Acked-by: Nikolay Aleksandrov Acked-by: Daniel Borkmann Signed-off-by: David S. Miller --- net/core/flow_dissector.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c index 1929af87b260..8d7d0dd72db2 100644 --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -154,8 +154,8 @@ ipv6: if (poff >= 0) { __be32 *ports, _ports; - nhoff += poff; - ports = skb_header_pointer(skb, nhoff, sizeof(_ports), &_ports); + ports = skb_header_pointer(skb, nhoff + poff, + sizeof(_ports), &_ports); if (ports) flow->ports = *ports; } From 8d34ce10c59b40e0ce2685341c4e93416f505e45 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 27 Sep 2013 14:20:01 -0700 Subject: [PATCH 400/523] pkt_sched: fq: qdisc dismantle fixes fq_reset() should drops all packets in queue, including throttled flows. This patch moves code from fq_destroy() to fq_reset() to do the cleaning. fq_change() must stop calling fq_dequeue() if all remaining packets are from throttled flows. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/sched/sch_fq.c | 57 ++++++++++++++++++++++++++++++---------------- 1 file changed, 37 insertions(+), 20 deletions(-) diff --git a/net/sched/sch_fq.c b/net/sched/sch_fq.c index 32ad015ee8ce..fc6de56a331e 100644 --- a/net/sched/sch_fq.c +++ b/net/sched/sch_fq.c @@ -285,7 +285,7 @@ static struct fq_flow *fq_classify(struct sk_buff *skb, struct fq_sched_data *q) /* remove one skb from head of flow queue */ -static struct sk_buff *fq_dequeue_head(struct fq_flow *flow) +static struct sk_buff *fq_dequeue_head(struct Qdisc *sch, struct fq_flow *flow) { struct sk_buff *skb = flow->head; @@ -293,6 +293,8 @@ static struct sk_buff *fq_dequeue_head(struct fq_flow *flow) flow->head = skb->next; skb->next = NULL; flow->qlen--; + sch->qstats.backlog -= qdisc_pkt_len(skb); + sch->q.qlen--; } return skb; } @@ -419,7 +421,7 @@ static struct sk_buff *fq_dequeue(struct Qdisc *sch) struct sk_buff *skb; struct fq_flow *f; - skb = fq_dequeue_head(&q->internal); + skb = fq_dequeue_head(sch, &q->internal); if (skb) goto out; fq_check_throttled(q, now); @@ -449,7 +451,7 @@ begin: goto begin; } - skb = fq_dequeue_head(f); + skb = fq_dequeue_head(sch, f); if (!skb) { head->first = f->next; /* force a pass through old_flows to prevent starvation */ @@ -490,19 +492,44 @@ begin: } } out: - sch->qstats.backlog -= qdisc_pkt_len(skb); qdisc_bstats_update(sch, skb); - sch->q.qlen--; qdisc_unthrottled(sch); return skb; } static void fq_reset(struct Qdisc *sch) { + struct fq_sched_data *q = qdisc_priv(sch); + struct rb_root *root; struct sk_buff *skb; + struct rb_node *p; + struct fq_flow *f; + unsigned int idx; - while ((skb = fq_dequeue(sch)) != NULL) + while ((skb = fq_dequeue_head(sch, &q->internal)) != NULL) kfree_skb(skb); + + if (!q->fq_root) + return; + + for (idx = 0; idx < (1U << q->fq_trees_log); idx++) { + root = &q->fq_root[idx]; + while ((p = rb_first(root)) != NULL) { + f = container_of(p, struct fq_flow, fq_node); + rb_erase(p, root); + + while ((skb = fq_dequeue_head(sch, f)) != NULL) + kfree_skb(skb); + + kmem_cache_free(fq_flow_cachep, f); + } + } + q->new_flows.first = NULL; + q->old_flows.first = NULL; + q->delayed = RB_ROOT; + q->flows = 0; + q->inactive_flows = 0; + q->throttled_flows = 0; } static void fq_rehash(struct fq_sched_data *q, @@ -645,6 +672,8 @@ static int fq_change(struct Qdisc *sch, struct nlattr *opt) while (sch->q.qlen > sch->limit) { struct sk_buff *skb = fq_dequeue(sch); + if (!skb) + break; kfree_skb(skb); drop_count++; } @@ -657,21 +686,9 @@ static int fq_change(struct Qdisc *sch, struct nlattr *opt) static void fq_destroy(struct Qdisc *sch) { struct fq_sched_data *q = qdisc_priv(sch); - struct rb_root *root; - struct rb_node *p; - unsigned int idx; - if (q->fq_root) { - for (idx = 0; idx < (1U << q->fq_trees_log); idx++) { - root = &q->fq_root[idx]; - while ((p = rb_first(root)) != NULL) { - rb_erase(p, root); - kmem_cache_free(fq_flow_cachep, - container_of(p, struct fq_flow, fq_node)); - } - } - kfree(q->fq_root); - } + fq_reset(sch); + kfree(q->fq_root); qdisc_watchdog_cancel(&q->watchdog); } From bc4c9612922524ce3eba64c5e7d6323f8e174ca1 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Sat, 21 Sep 2013 16:21:00 +0100 Subject: [PATCH 401/523] iio: Remove debugfs entries in iio_device_unregister() Remove the the debugfs entries in iio_device_unregister(). Otherwise the debugfs entries might still be accessible even though the device used in the debugfs callback has already been freed. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 8e84cd522e49..f95c6979efd8 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -852,7 +852,6 @@ static void iio_dev_release(struct device *device) iio_device_unregister_trigger_consumer(indio_dev); iio_device_unregister_eventset(indio_dev); iio_device_unregister_sysfs(indio_dev); - iio_device_unregister_debugfs(indio_dev); ida_simple_remove(&iio_ida, indio_dev->id); kfree(indio_dev); @@ -1087,6 +1086,7 @@ void iio_device_unregister(struct iio_dev *indio_dev) if (indio_dev->chrdev.dev) cdev_del(&indio_dev->chrdev); + iio_device_unregister_debugfs(indio_dev); iio_disable_all_buffers(indio_dev); From 512690daa6cc6dec0a4f776a0f0f3d729b029cf9 Mon Sep 17 00:00:00 2001 From: Denis CIOCCA Date: Tue, 24 Sep 2013 15:51:00 +0100 Subject: [PATCH 402/523] iio:magnetometer: Bugfix magnetometer default output registers Signed-off-by: Denis Ciocca Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/st_magn_core.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/iio/magnetometer/st_magn_core.c b/drivers/iio/magnetometer/st_magn_core.c index e8d2849cc81d..cab3bc7494a2 100644 --- a/drivers/iio/magnetometer/st_magn_core.c +++ b/drivers/iio/magnetometer/st_magn_core.c @@ -29,9 +29,9 @@ #define ST_MAGN_NUMBER_DATA_CHANNELS 3 /* DEFAULT VALUE FOR SENSORS */ -#define ST_MAGN_DEFAULT_OUT_X_L_ADDR 0X04 -#define ST_MAGN_DEFAULT_OUT_Y_L_ADDR 0X08 -#define ST_MAGN_DEFAULT_OUT_Z_L_ADDR 0X06 +#define ST_MAGN_DEFAULT_OUT_X_H_ADDR 0X03 +#define ST_MAGN_DEFAULT_OUT_Y_H_ADDR 0X07 +#define ST_MAGN_DEFAULT_OUT_Z_H_ADDR 0X05 /* FULLSCALE */ #define ST_MAGN_FS_AVL_1300MG 1300 @@ -117,16 +117,16 @@ static const struct iio_chan_spec st_magn_16bit_channels[] = { ST_SENSORS_LSM_CHANNELS(IIO_MAGN, BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), - ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16, - ST_MAGN_DEFAULT_OUT_X_L_ADDR), + ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_BE, 16, 16, + ST_MAGN_DEFAULT_OUT_X_H_ADDR), ST_SENSORS_LSM_CHANNELS(IIO_MAGN, BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), - ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16, - ST_MAGN_DEFAULT_OUT_Y_L_ADDR), + ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_BE, 16, 16, + ST_MAGN_DEFAULT_OUT_Y_H_ADDR), ST_SENSORS_LSM_CHANNELS(IIO_MAGN, BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), - ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16, - ST_MAGN_DEFAULT_OUT_Z_L_ADDR), + ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_BE, 16, 16, + ST_MAGN_DEFAULT_OUT_Z_H_ADDR), IIO_CHAN_SOFT_TIMESTAMP(3) }; From 7393dc45f6ed5d3aba43b06d49eb3b15f1318906 Mon Sep 17 00:00:00 2001 From: Joonyoung Shim Date: Mon, 30 Sep 2013 13:45:01 -0700 Subject: [PATCH 403/523] revert "mm/memory-hotplug: fix lowmem count overflow when offline pages" This reverts commit cea27eb2a202 ("mm/memory-hotplug: fix lowmem count overflow when offline pages"). The fixed bug by commit cea27eb was fixed to another way by commit 3dcc0571cd64 ("mm: correctly update zone->managed_pages"). That commit enhances memory_hotplug.c to adjust totalhigh_pages when hot-removing memory, for details please refer to: http://marc.info/?l=linux-mm&m=136957578620221&w=2 As a result, commit cea27eb2a202 currently causes duplicated decreasing of totalhigh_pages, thus the revert. Signed-off-by: Joonyoung Shim Reviewed-by: Wanpeng Li Cc: Jiang Liu Cc: KOSAKI Motohiro Cc: Bartlomiej Zolnierkiewicz Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 0ee638f76ebe..dd886fac451a 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -6366,10 +6366,6 @@ __offline_isolated_pages(unsigned long start_pfn, unsigned long end_pfn) list_del(&page->lru); rmv_page_order(page); zone->free_area[order].nr_free--; -#ifdef CONFIG_HIGHMEM - if (PageHighMem(page)) - totalhigh_pages -= 1 << order; -#endif for (i = 0; i < (1 << order); i++) SetPageReserved((page+i)); pfn += (1 << order); From 72023656961b8c81a168a7a6762d589339d0d7ec Mon Sep 17 00:00:00 2001 From: Dan Aloni Date: Mon, 30 Sep 2013 13:45:02 -0700 Subject: [PATCH 404/523] fs/binfmt_elf.c: prevent a coredump with a large vm_map_count from Oopsing A high setting of max_map_count, and a process core-dumping with a large enough vm_map_count could result in an NT_FILE note not being written, and the kernel crashing immediately later because it has assumed otherwise. Reproduction of the oops-causing bug described here: https://lkml.org/lkml/2013/8/30/50 Rge ussue originated in commit 2aa362c49c31 ("coredump: extend core dump note section to contain file names of mapped file") from Oct 4, 2012. This patch make that section optional in that case. fill_files_note() should signify the error, and also let the info struct in elf_core_dump() be zero-initialized so that we can check for the optionally written note. [akpm@linux-foundation.org: avoid abusing E2BIG, remove a couple of not-really-needed local variables] [akpm@linux-foundation.org: fix sparse warning] Signed-off-by: Dan Aloni Cc: Al Viro Cc: Denys Vlasenko Reported-by: Martin MOKREJS Tested-by: Martin MOKREJS Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/binfmt_elf.c | 30 ++++++++++++++++++------------ 1 file changed, 18 insertions(+), 12 deletions(-) diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 100edcc5e312..4c94a79991bb 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -1413,7 +1413,7 @@ static void fill_siginfo_note(struct memelfnote *note, user_siginfo_t *csigdata, * long file_ofs * followed by COUNT filenames in ASCII: "FILE1" NUL "FILE2" NUL... */ -static void fill_files_note(struct memelfnote *note) +static int fill_files_note(struct memelfnote *note) { struct vm_area_struct *vma; unsigned count, size, names_ofs, remaining, n; @@ -1428,11 +1428,11 @@ static void fill_files_note(struct memelfnote *note) names_ofs = (2 + 3 * count) * sizeof(data[0]); alloc: if (size >= MAX_FILE_NOTE_SIZE) /* paranoia check */ - goto err; + return -EINVAL; size = round_up(size, PAGE_SIZE); data = vmalloc(size); if (!data) - goto err; + return -ENOMEM; start_end_ofs = data + 2; name_base = name_curpos = ((char *)data) + names_ofs; @@ -1485,7 +1485,7 @@ static void fill_files_note(struct memelfnote *note) size = name_curpos - (char *)data; fill_note(note, "CORE", NT_FILE, size, data); - err: ; + return 0; } #ifdef CORE_DUMP_USE_REGSET @@ -1686,8 +1686,8 @@ static int fill_note_info(struct elfhdr *elf, int phdrs, fill_auxv_note(&info->auxv, current->mm); info->size += notesize(&info->auxv); - fill_files_note(&info->files); - info->size += notesize(&info->files); + if (fill_files_note(&info->files) == 0) + info->size += notesize(&info->files); return 1; } @@ -1719,7 +1719,8 @@ static int write_note_info(struct elf_note_info *info, return 0; if (first && !writenote(&info->auxv, file, foffset)) return 0; - if (first && !writenote(&info->files, file, foffset)) + if (first && info->files.data && + !writenote(&info->files, file, foffset)) return 0; for (i = 1; i < info->thread_notes; ++i) @@ -1806,6 +1807,7 @@ static int elf_dump_thread_status(long signr, struct elf_thread_status *t) struct elf_note_info { struct memelfnote *notes; + struct memelfnote *notes_files; struct elf_prstatus *prstatus; /* NT_PRSTATUS */ struct elf_prpsinfo *psinfo; /* NT_PRPSINFO */ struct list_head thread_list; @@ -1896,9 +1898,12 @@ static int fill_note_info(struct elfhdr *elf, int phdrs, fill_siginfo_note(info->notes + 2, &info->csigdata, siginfo); fill_auxv_note(info->notes + 3, current->mm); - fill_files_note(info->notes + 4); + info->numnote = 4; - info->numnote = 5; + if (fill_files_note(info->notes + info->numnote) == 0) { + info->notes_files = info->notes + info->numnote; + info->numnote++; + } /* Try to dump the FPU. */ info->prstatus->pr_fpvalid = elf_core_copy_task_fpregs(current, regs, @@ -1960,8 +1965,9 @@ static void free_note_info(struct elf_note_info *info) kfree(list_entry(tmp, struct elf_thread_status, list)); } - /* Free data allocated by fill_files_note(): */ - vfree(info->notes[4].data); + /* Free data possibly allocated by fill_files_note(): */ + if (info->notes_files) + vfree(info->notes_files->data); kfree(info->prstatus); kfree(info->psinfo); @@ -2044,7 +2050,7 @@ static int elf_core_dump(struct coredump_params *cprm) struct vm_area_struct *vma, *gate_vma; struct elfhdr *elf = NULL; loff_t offset = 0, dataoff, foffset; - struct elf_note_info info; + struct elf_note_info info = { }; struct elf_phdr *phdr4note = NULL; struct elf_shdr *shdr4extnum = NULL; Elf_Half e_phnum; From f6ea3adb70b20ae36277a1b0eaaf4da9f6479a28 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Mon, 30 Sep 2013 13:45:03 -0700 Subject: [PATCH 405/523] mm/compaction.c: periodically schedule when freeing pages We've been getting warnings about an excessive amount of time spent allocating pages for migration during memory compaction without scheduling. isolate_freepages_block() already periodically checks for contended locks or the need to schedule, but isolate_freepages() never does. When a zone is massively long and no suitable targets can be found, this iteration can be quite expensive without ever doing cond_resched(). Check periodically for the need to reschedule while the compaction free scanner iterates. Signed-off-by: David Rientjes Reviewed-by: Rik van Riel Reviewed-by: Wanpeng Li Acked-by: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/compaction.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/mm/compaction.c b/mm/compaction.c index c43789388cd8..b5326b141a25 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -677,6 +677,13 @@ static void isolate_freepages(struct zone *zone, pfn -= pageblock_nr_pages) { unsigned long isolated; + /* + * This can iterate a massively long zone without finding any + * suitable migration targets, so periodically check if we need + * to schedule. + */ + cond_resched(); + if (!pfn_valid(pfn)) continue; From 5e9d527591421ccdb16acb8c23662231135d8686 Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Mon, 30 Sep 2013 13:45:04 -0700 Subject: [PATCH 406/523] ipc/sem.c: fix race in sem_lock() The exclusion of complex operations in sem_lock() is insufficient: after acquiring the per-semaphore lock, a simple op must first check that sem_perm.lock is not locked and only after that test check complex_count. The current code does it the other way around - and that creates a race. Details are below. The patch is a complete rewrite of sem_lock(), based in part on the code from Mike Galbraith. It removes all gotos and all loops and thus the risk of livelocks. I have tested the patch (together with the next one) on my i3 laptop and it didn't cause any problems. The bug is probably also present in 3.10 and 3.11, but for these kernels it might be simpler just to move the test of sma->complex_count after the spin_is_locked() test. Details of the bug: Assume: - sma->complex_count = 0. - Thread 1: semtimedop(complex op that must sleep) - Thread 2: semtimedop(simple op). Pseudo-Trace: Thread 1: sem_lock(): acquire sem_perm.lock Thread 1: sem_lock(): check for ongoing simple ops Nothing ongoing, thread 2 is still before sem_lock(). Thread 1: try_atomic_semop() <<< preempted. Thread 2: sem_lock(): static inline int sem_lock(struct sem_array *sma, struct sembuf *sops, int nsops) { int locknum; again: if (nsops == 1 && !sma->complex_count) { struct sem *sem = sma->sem_base + sops->sem_num; /* Lock just the semaphore we are interested in. */ spin_lock(&sem->lock); /* * If sma->complex_count was set while we were spinning, * we may need to look at things we did not lock here. */ if (unlikely(sma->complex_count)) { spin_unlock(&sem->lock); goto lock_array; } <<<<<<<<< <<< complex_count is still 0. <<< <<< Here it is preempted <<<<<<<<< Thread 1: try_atomic_semop() returns, notices that it must sleep. Thread 1: increases sma->complex_count. Thread 1: drops sem_perm.lock Thread 2: /* * Another process is holding the global lock on the * sem_array; we cannot enter our critical section, * but have to wait for the global lock to be released. */ if (unlikely(spin_is_locked(&sma->sem_perm.lock))) { spin_unlock(&sem->lock); spin_unlock_wait(&sma->sem_perm.lock); goto again; } <<< sem_perm.lock already dropped, thus no "goto again;" locknum = sops->sem_num; Signed-off-by: Manfred Spraul Cc: Mike Galbraith Cc: Rik van Riel Cc: Davidlohr Bueso Cc: [3.10+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/sem.c | 132 ++++++++++++++++++++++++++++++++++-------------------- 1 file changed, 83 insertions(+), 49 deletions(-) diff --git a/ipc/sem.c b/ipc/sem.c index 19c8b980d1fe..4a92c0447ad6 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -252,71 +252,105 @@ static void sem_rcu_free(struct rcu_head *head) ipc_rcu_free(head); } +/* + * Wait until all currently ongoing simple ops have completed. + * Caller must own sem_perm.lock. + * New simple ops cannot start, because simple ops first check + * that sem_perm.lock is free. + */ +static void sem_wait_array(struct sem_array *sma) +{ + int i; + struct sem *sem; + + for (i = 0; i < sma->sem_nsems; i++) { + sem = sma->sem_base + i; + spin_unlock_wait(&sem->lock); + } +} + /* * If the request contains only one semaphore operation, and there are * no complex transactions pending, lock only the semaphore involved. * Otherwise, lock the entire semaphore array, since we either have * multiple semaphores in our own semops, or we need to look at * semaphores from other pending complex operations. - * - * Carefully guard against sma->complex_count changing between zero - * and non-zero while we are spinning for the lock. The value of - * sma->complex_count cannot change while we are holding the lock, - * so sem_unlock should be fine. - * - * The global lock path checks that all the local locks have been released, - * checking each local lock once. This means that the local lock paths - * cannot start their critical sections while the global lock is held. */ static inline int sem_lock(struct sem_array *sma, struct sembuf *sops, int nsops) { - int locknum; - again: - if (nsops == 1 && !sma->complex_count) { - struct sem *sem = sma->sem_base + sops->sem_num; + struct sem *sem; - /* Lock just the semaphore we are interested in. */ + if (nsops != 1) { + /* Complex operation - acquire a full lock */ + ipc_lock_object(&sma->sem_perm); + + /* And wait until all simple ops that are processed + * right now have dropped their locks. + */ + sem_wait_array(sma); + return -1; + } + + /* + * Only one semaphore affected - try to optimize locking. + * The rules are: + * - optimized locking is possible if no complex operation + * is either enqueued or processed right now. + * - The test for enqueued complex ops is simple: + * sma->complex_count != 0 + * - Testing for complex ops that are processed right now is + * a bit more difficult. Complex ops acquire the full lock + * and first wait that the running simple ops have completed. + * (see above) + * Thus: If we own a simple lock and the global lock is free + * and complex_count is now 0, then it will stay 0 and + * thus just locking sem->lock is sufficient. + */ + sem = sma->sem_base + sops->sem_num; + + if (sma->complex_count == 0) { + /* + * It appears that no complex operation is around. + * Acquire the per-semaphore lock. + */ spin_lock(&sem->lock); - /* - * If sma->complex_count was set while we were spinning, - * we may need to look at things we did not lock here. - */ - if (unlikely(sma->complex_count)) { - spin_unlock(&sem->lock); - goto lock_array; - } + /* Then check that the global lock is free */ + if (!spin_is_locked(&sma->sem_perm.lock)) { + /* spin_is_locked() is not a memory barrier */ + smp_mb(); - /* - * Another process is holding the global lock on the - * sem_array; we cannot enter our critical section, - * but have to wait for the global lock to be released. - */ - if (unlikely(spin_is_locked(&sma->sem_perm.lock))) { - spin_unlock(&sem->lock); - spin_unlock_wait(&sma->sem_perm.lock); - goto again; + /* Now repeat the test of complex_count: + * It can't change anymore until we drop sem->lock. + * Thus: if is now 0, then it will stay 0. + */ + if (sma->complex_count == 0) { + /* fast path successful! */ + return sops->sem_num; + } } - - locknum = sops->sem_num; - } else { - int i; - /* - * Lock the semaphore array, and wait for all of the - * individual semaphore locks to go away. The code - * above ensures no new single-lock holders will enter - * their critical section while the array lock is held. - */ - lock_array: - ipc_lock_object(&sma->sem_perm); - for (i = 0; i < sma->sem_nsems; i++) { - struct sem *sem = sma->sem_base + i; - spin_unlock_wait(&sem->lock); - } - locknum = -1; + spin_unlock(&sem->lock); + } + + /* slow path: acquire the full lock */ + ipc_lock_object(&sma->sem_perm); + + if (sma->complex_count == 0) { + /* False alarm: + * There is no complex operation, thus we can switch + * back to the fast path. + */ + spin_lock(&sem->lock); + ipc_unlock_object(&sma->sem_perm); + return sops->sem_num; + } else { + /* Not a false alarm, thus complete the sequence for a + * full lock. + */ + sem_wait_array(sma); + return -1; } - return locknum; } static inline void sem_unlock(struct sem_array *sma, int locknum) From 6d07b68ce16ae9535955ba2059dedba5309c3ca1 Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Mon, 30 Sep 2013 13:45:06 -0700 Subject: [PATCH 407/523] ipc/sem.c: optimize sem_lock() Operations that need access to the whole array must guarantee that there are no simple operations ongoing. Right now this is achieved by spin_unlock_wait(sem->lock) on all semaphores. If complex_count is nonzero, then this spin_unlock_wait() is not necessary, because it was already performed in the past by the thread that increased complex_count and even though sem_perm.lock was dropped inbetween, no simple operation could have started, because simple operations cannot start when complex_count is non-zero. Signed-off-by: Manfred Spraul Cc: Mike Galbraith Cc: Rik van Riel Reviewed-by: Davidlohr Bueso Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/sem.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/ipc/sem.c b/ipc/sem.c index 4a92c0447ad6..e20658d76bb5 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -257,12 +257,20 @@ static void sem_rcu_free(struct rcu_head *head) * Caller must own sem_perm.lock. * New simple ops cannot start, because simple ops first check * that sem_perm.lock is free. + * that a) sem_perm.lock is free and b) complex_count is 0. */ static void sem_wait_array(struct sem_array *sma) { int i; struct sem *sem; + if (sma->complex_count) { + /* The thread that increased sma->complex_count waited on + * all sem->lock locks. Thus we don't need to wait again. + */ + return; + } + for (i = 0; i < sma->sem_nsems; i++) { sem = sma->sem_base + i; spin_unlock_wait(&sem->lock); From d8c633766ad88527f25d9f81a5c2f083d78a2b39 Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Mon, 30 Sep 2013 13:45:07 -0700 Subject: [PATCH 408/523] ipc/sem.c: synchronize the proc interface The proc interface is not aware of sem_lock(), it instead calls ipc_lock_object() directly. This means that simple semop() operations can run in parallel with the proc interface. Right now, this is uncritical, because the implementation doesn't do anything that requires a proper synchronization. But it is dangerous and therefore should be fixed. Signed-off-by: Manfred Spraul Cc: Davidlohr Bueso Cc: Mike Galbraith Cc: Rik van Riel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/sem.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/ipc/sem.c b/ipc/sem.c index e20658d76bb5..cd6a733011a2 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -2103,6 +2103,14 @@ static int sysvipc_sem_proc_show(struct seq_file *s, void *it) struct sem_array *sma = it; time_t sem_otime; + /* + * The proc interface isn't aware of sem_lock(), it calls + * ipc_lock_object() directly (in sysvipc_find_ipc). + * In order to stay compatible with sem_lock(), we must wait until + * all simple semop() calls have left their critical regions. + */ + sem_wait_array(sma); + sem_otime = get_semotime(sma); return seq_printf(s, From 4c1c7be95c345cf2ad537a0c48e9aeadc7304527 Mon Sep 17 00:00:00 2001 From: Tetsuo Handa Date: Mon, 30 Sep 2013 13:45:08 -0700 Subject: [PATCH 409/523] kernel/kmod.c: check for NULL in call_usermodehelper_exec() If /proc/sys/kernel/core_pattern contains only "|", a NULL pointer dereference happens upon core dump because argv_split("") returns argv[0] == NULL. This bug was once fixed by commit 264b83c07a84 ("usermodehelper: check subprocess_info->path != NULL") but was by error reintroduced by commit 7f57cfa4e2aa ("usermodehelper: kill the sub_info->path[0] check"). This bug seems to exist since 2.6.19 (the version which core dump to pipe was added). Depending on kernel version and config, some side effect might happen immediately after this oops (e.g. kernel panic with 2.6.32-358.18.1.el6). Signed-off-by: Tetsuo Handa Acked-by: Oleg Nesterov Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/kmod.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/kmod.c b/kernel/kmod.c index fb326365b694..b086006c59e7 100644 --- a/kernel/kmod.c +++ b/kernel/kmod.c @@ -571,6 +571,10 @@ int call_usermodehelper_exec(struct subprocess_info *sub_info, int wait) DECLARE_COMPLETION_ONSTACK(done); int retval = 0; + if (!sub_info->path) { + call_usermodehelper_freeinfo(sub_info); + return -EINVAL; + } helper_lock(); if (!khelper_wq || usermodehelper_disabled) { retval = -EBUSY; From 83b2944fd2532b92db099cb3ada12df32a05b368 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Mon, 30 Sep 2013 13:45:09 -0700 Subject: [PATCH 410/523] mm/bounce.c: fix a regression where MS_SNAP_STABLE (stable pages snapshotting) was ignored The "force" parameter in __blk_queue_bounce was being ignored, which means that stable page snapshots are not always happening (on ext3). This of course leads to DIF disks reporting checksum errors, so fix this regression. The regression was introduced in commit 6bc454d15004 ("bounce: Refactor __blk_queue_bounce to not use bi_io_vec") Reported-by: Mel Gorman Signed-off-by: Darrick J. Wong Cc: Kent Overstreet Cc: [3.10+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/bounce.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/bounce.c b/mm/bounce.c index c9f0a4339a7d..5a7d58fb883b 100644 --- a/mm/bounce.c +++ b/mm/bounce.c @@ -204,6 +204,8 @@ static void __blk_queue_bounce(struct request_queue *q, struct bio **bio_orig, struct bio_vec *to, *from; unsigned i; + if (force) + goto bounce; bio_for_each_segment(from, *bio_orig, i) if (page_to_pfn(from->bv_page) > queue_bounce_pfn(q)) goto bounce; From 675217fd9950a668a33f9ee3fac3df34fd5113d0 Mon Sep 17 00:00:00 2001 From: Weiping Pan Date: Mon, 30 Sep 2013 13:45:10 -0700 Subject: [PATCH 411/523] Documentation/kernel-parameters.txt: replace kernelcore with Movable Han Pingtian found a typo in Documentation/kernel-parameters.txt about "kernelcore=", that "kernelcore" should be replaced with "Movable" here. Signed-off-by: Weiping Pan Acked-by: Mel Gorman Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/kernel-parameters.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 539a23631990..73d23fdc512b 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1357,7 +1357,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. pages. In the event, a node is too small to have both kernelcore and Movable pages, kernelcore pages will take priority and other nodes will have a larger number - of kernelcore pages. The Movable zone is used for the + of Movable pages. The Movable zone is used for the allocation of pages that may be reclaimed or moved by the page migration subsystem. This means that HugeTLB pages may not be allocated from this zone. From 7f42ec3941560f0902fe3671e36f2c20ffd3af0a Mon Sep 17 00:00:00 2001 From: Vyacheslav Dubeyko Date: Mon, 30 Sep 2013 13:45:12 -0700 Subject: [PATCH 412/523] nilfs2: fix issue with race condition of competition between segments for dirty blocks Many NILFS2 users were reported about strange file system corruption (for example): NILFS: bad btree node (blocknr=185027): level = 0, flags = 0x0, nchildren = 768 NILFS error (device sda4): nilfs_bmap_last_key: broken bmap (inode number=11540) But such error messages are consequence of file system's issue that takes place more earlier. Fortunately, Jerome Poulin and Anton Eliasson were reported about another issue not so recently. These reports describe the issue with segctor thread's crash: BUG: unable to handle kernel paging request at 0000000000004c83 IP: nilfs_end_page_io+0x12/0xd0 [nilfs2] Call Trace: nilfs_segctor_do_construct+0xf25/0x1b20 [nilfs2] nilfs_segctor_construct+0x17b/0x290 [nilfs2] nilfs_segctor_thread+0x122/0x3b0 [nilfs2] kthread+0xc0/0xd0 ret_from_fork+0x7c/0xb0 These two issues have one reason. This reason can raise third issue too. Third issue results in hanging of segctor thread with eating of 100% CPU. REPRODUCING PATH: One of the possible way or the issue reproducing was described by Jermoe me Poulin : 1. init S to get to single user mode. 2. sysrq+E to make sure only my shell is running 3. start network-manager to get my wifi connection up 4. login as root and launch "screen" 5. cd /boot/log/nilfs which is a ext3 mount point and can log when NILFS dies. 6. lscp | xz -9e > lscp.txt.xz 7. mount my snapshot using mount -o cp=3360839,ro /dev/vgUbuntu/root /mnt/nilfs 8. start a screen to dump /proc/kmsg to text file since rsyslog is killed 9. start a screen and launch strace -f -o find-cat.log -t find /mnt/nilfs -type f -exec cat {} > /dev/null \; 10. start a screen and launch strace -f -o apt-get.log -t apt-get update 11. launch the last command again as it did not crash the first time 12. apt-get crashes 13. ps aux > ps-aux-crashed.log 13. sysrq+W 14. sysrq+E wait for everything to terminate 15. sysrq+SUSB Simplified way of the issue reproducing is starting kernel compilation task and "apt-get update" in parallel. REPRODUCIBILITY: The issue is reproduced not stable [60% - 80%]. It is very important to have proper environment for the issue reproducing. The critical conditions for successful reproducing: (1) It should have big modified file by mmap() way. (2) This file should have the count of dirty blocks are greater that several segments in size (for example, two or three) from time to time during processing. (3) It should be intensive background activity of files modification in another thread. INVESTIGATION: First of all, it is possible to see that the reason of crash is not valid page address: NILFS [nilfs_segctor_complete_write]:2100 bh->b_count 0, bh->b_blocknr 13895680, bh->b_size 13897727, bh->b_page 0000000000001a82 NILFS [nilfs_segctor_complete_write]:2101 segbuf->sb_segnum 6783 Moreover, value of b_page (0x1a82) is 6786. This value looks like segment number. And b_blocknr with b_size values look like block numbers. So, buffer_head's pointer points on not proper address value. Detailed investigation of the issue is discovered such picture: [-----------------------------SEGMENT 6783-------------------------------] NILFS [nilfs_segctor_do_construct]:2310 nilfs_segctor_begin_construction NILFS [nilfs_segctor_do_construct]:2321 nilfs_segctor_collect NILFS [nilfs_segctor_do_construct]:2336 nilfs_segctor_assign NILFS [nilfs_segctor_do_construct]:2367 nilfs_segctor_update_segusage NILFS [nilfs_segctor_do_construct]:2371 nilfs_segctor_prepare_write NILFS [nilfs_segctor_do_construct]:2376 nilfs_add_checksums_on_logs NILFS [nilfs_segctor_do_construct]:2381 nilfs_segctor_write NILFS [nilfs_segbuf_submit_bio]:464 bio->bi_sector 111149024, segbuf->sb_segnum 6783 [-----------------------------SEGMENT 6784-------------------------------] NILFS [nilfs_segctor_do_construct]:2310 nilfs_segctor_begin_construction NILFS [nilfs_segctor_do_construct]:2321 nilfs_segctor_collect NILFS [nilfs_lookup_dirty_data_buffers]:782 bh->b_count 1, bh->b_page ffffea000709b000, page->index 0, i_ino 1033103, i_size 25165824 NILFS [nilfs_lookup_dirty_data_buffers]:783 bh->b_assoc_buffers.next ffff8802174a6798, bh->b_assoc_buffers.prev ffff880221cffee8 NILFS [nilfs_segctor_do_construct]:2336 nilfs_segctor_assign NILFS [nilfs_segctor_do_construct]:2367 nilfs_segctor_update_segusage NILFS [nilfs_segctor_do_construct]:2371 nilfs_segctor_prepare_write NILFS [nilfs_segctor_do_construct]:2376 nilfs_add_checksums_on_logs NILFS [nilfs_segctor_do_construct]:2381 nilfs_segctor_write NILFS [nilfs_segbuf_submit_bh]:575 bh->b_count 1, bh->b_page ffffea000709b000, page->index 0, i_ino 1033103, i_size 25165824 NILFS [nilfs_segbuf_submit_bh]:576 segbuf->sb_segnum 6784 NILFS [nilfs_segbuf_submit_bh]:577 bh->b_assoc_buffers.next ffff880218a0d5f8, bh->b_assoc_buffers.prev ffff880218bcdf50 NILFS [nilfs_segbuf_submit_bio]:464 bio->bi_sector 111150080, segbuf->sb_segnum 6784, segbuf->sb_nbio 0 [----------] ditto NILFS [nilfs_segbuf_submit_bio]:464 bio->bi_sector 111164416, segbuf->sb_segnum 6784, segbuf->sb_nbio 15 [-----------------------------SEGMENT 6785-------------------------------] NILFS [nilfs_segctor_do_construct]:2310 nilfs_segctor_begin_construction NILFS [nilfs_segctor_do_construct]:2321 nilfs_segctor_collect NILFS [nilfs_lookup_dirty_data_buffers]:782 bh->b_count 2, bh->b_page ffffea000709b000, page->index 0, i_ino 1033103, i_size 25165824 NILFS [nilfs_lookup_dirty_data_buffers]:783 bh->b_assoc_buffers.next ffff880219277e80, bh->b_assoc_buffers.prev ffff880221cffc88 NILFS [nilfs_segctor_do_construct]:2367 nilfs_segctor_update_segusage NILFS [nilfs_segctor_do_construct]:2371 nilfs_segctor_prepare_write NILFS [nilfs_segctor_do_construct]:2376 nilfs_add_checksums_on_logs NILFS [nilfs_segctor_do_construct]:2381 nilfs_segctor_write NILFS [nilfs_segbuf_submit_bh]:575 bh->b_count 2, bh->b_page ffffea000709b000, page->index 0, i_ino 1033103, i_size 25165824 NILFS [nilfs_segbuf_submit_bh]:576 segbuf->sb_segnum 6785 NILFS [nilfs_segbuf_submit_bh]:577 bh->b_assoc_buffers.next ffff880218a0d5f8, bh->b_assoc_buffers.prev ffff880222cc7ee8 NILFS [nilfs_segbuf_submit_bio]:464 bio->bi_sector 111165440, segbuf->sb_segnum 6785, segbuf->sb_nbio 0 [----------] ditto NILFS [nilfs_segbuf_submit_bio]:464 bio->bi_sector 111177728, segbuf->sb_segnum 6785, segbuf->sb_nbio 12 NILFS [nilfs_segctor_do_construct]:2399 nilfs_segctor_wait NILFS [nilfs_segbuf_wait]:676 segbuf->sb_segnum 6783 NILFS [nilfs_segbuf_wait]:676 segbuf->sb_segnum 6784 NILFS [nilfs_segbuf_wait]:676 segbuf->sb_segnum 6785 NILFS [nilfs_segctor_complete_write]:2100 bh->b_count 0, bh->b_blocknr 13895680, bh->b_size 13897727, bh->b_page 0000000000001a82 BUG: unable to handle kernel paging request at 0000000000001a82 IP: [] nilfs_end_page_io+0x12/0xd0 [nilfs2] Usually, for every segment we collect dirty files in list. Then, dirty blocks are gathered for every dirty file, prepared for write and submitted by means of nilfs_segbuf_submit_bh() call. Finally, it takes place complete write phase after calling nilfs_end_bio_write() on the block layer. Buffers/pages are marked as not dirty on final phase and processed files removed from the list of dirty files. It is possible to see that we had three prepare_write and submit_bio phases before segbuf_wait and complete_write phase. Moreover, segments compete between each other for dirty blocks because on every iteration of segments processing dirty buffer_heads are added in several lists of payload_buffers: [SEGMENT 6784]: bh->b_assoc_buffers.next ffff880218a0d5f8, bh->b_assoc_buffers.prev ffff880218bcdf50 [SEGMENT 6785]: bh->b_assoc_buffers.next ffff880218a0d5f8, bh->b_assoc_buffers.prev ffff880222cc7ee8 The next pointer is the same but prev pointer has changed. It means that buffer_head has next pointer from one list but prev pointer from another. Such modification can be made several times. And, finally, it can be resulted in various issues: (1) segctor hanging, (2) segctor crashing, (3) file system metadata corruption. FIX: This patch adds: (1) setting of BH_Async_Write flag in nilfs_segctor_prepare_write() for every proccessed dirty block; (2) checking of BH_Async_Write flag in nilfs_lookup_dirty_data_buffers() and nilfs_lookup_dirty_node_buffers(); (3) clearing of BH_Async_Write flag in nilfs_segctor_complete_write(), nilfs_abort_logs(), nilfs_forget_buffer(), nilfs_clear_dirty_page(). Reported-by: Jerome Poulin Reported-by: Anton Eliasson Cc: Paul Fertser Cc: ARAI Shun-ichi Cc: Piotr Szymaniak Cc: Juan Barry Manuel Canham Cc: Zahid Chowdhury Cc: Elmer Zhang Cc: Kenneth Langga Signed-off-by: Vyacheslav Dubeyko Acked-by: Ryusuke Konishi Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/nilfs2/page.c | 2 ++ fs/nilfs2/segment.c | 11 +++++++++-- 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c index 0ba679866e50..da276640f776 100644 --- a/fs/nilfs2/page.c +++ b/fs/nilfs2/page.c @@ -94,6 +94,7 @@ void nilfs_forget_buffer(struct buffer_head *bh) clear_buffer_nilfs_volatile(bh); clear_buffer_nilfs_checked(bh); clear_buffer_nilfs_redirected(bh); + clear_buffer_async_write(bh); clear_buffer_dirty(bh); if (nilfs_page_buffers_clean(page)) __nilfs_clear_page_dirty(page); @@ -429,6 +430,7 @@ void nilfs_clear_dirty_page(struct page *page, bool silent) "discard block %llu, size %zu", (u64)bh->b_blocknr, bh->b_size); } + clear_buffer_async_write(bh); clear_buffer_dirty(bh); clear_buffer_nilfs_volatile(bh); clear_buffer_nilfs_checked(bh); diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index bd88a7461063..9f6b486b6c01 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -665,7 +665,7 @@ static size_t nilfs_lookup_dirty_data_buffers(struct inode *inode, bh = head = page_buffers(page); do { - if (!buffer_dirty(bh)) + if (!buffer_dirty(bh) || buffer_async_write(bh)) continue; get_bh(bh); list_add_tail(&bh->b_assoc_buffers, listp); @@ -699,7 +699,8 @@ static void nilfs_lookup_dirty_node_buffers(struct inode *inode, for (i = 0; i < pagevec_count(&pvec); i++) { bh = head = page_buffers(pvec.pages[i]); do { - if (buffer_dirty(bh)) { + if (buffer_dirty(bh) && + !buffer_async_write(bh)) { get_bh(bh); list_add_tail(&bh->b_assoc_buffers, listp); @@ -1579,6 +1580,7 @@ static void nilfs_segctor_prepare_write(struct nilfs_sc_info *sci) list_for_each_entry(bh, &segbuf->sb_segsum_buffers, b_assoc_buffers) { + set_buffer_async_write(bh); if (bh->b_page != bd_page) { if (bd_page) { lock_page(bd_page); @@ -1592,6 +1594,7 @@ static void nilfs_segctor_prepare_write(struct nilfs_sc_info *sci) list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) { + set_buffer_async_write(bh); if (bh == segbuf->sb_super_root) { if (bh->b_page != bd_page) { lock_page(bd_page); @@ -1677,6 +1680,7 @@ static void nilfs_abort_logs(struct list_head *logs, int err) list_for_each_entry(segbuf, logs, sb_list) { list_for_each_entry(bh, &segbuf->sb_segsum_buffers, b_assoc_buffers) { + clear_buffer_async_write(bh); if (bh->b_page != bd_page) { if (bd_page) end_page_writeback(bd_page); @@ -1686,6 +1690,7 @@ static void nilfs_abort_logs(struct list_head *logs, int err) list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) { + clear_buffer_async_write(bh); if (bh == segbuf->sb_super_root) { if (bh->b_page != bd_page) { end_page_writeback(bd_page); @@ -1755,6 +1760,7 @@ static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci) b_assoc_buffers) { set_buffer_uptodate(bh); clear_buffer_dirty(bh); + clear_buffer_async_write(bh); if (bh->b_page != bd_page) { if (bd_page) end_page_writeback(bd_page); @@ -1776,6 +1782,7 @@ static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci) b_assoc_buffers) { set_buffer_uptodate(bh); clear_buffer_dirty(bh); + clear_buffer_async_write(bh); clear_buffer_delay(bh); clear_buffer_nilfs_volatile(bh); clear_buffer_nilfs_redirected(bh); From 2a156a6b52f45355d999b58b745eef93021cc81a Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Mon, 30 Sep 2013 13:45:13 -0700 Subject: [PATCH 413/523] include/asm-generic/vtime.h: avoid zero-length file patch(1) can't handle zero-length files - it appears to simply not create the file, so my powerpc build fails. Put something in here to make life easier. Cc: Hugh Dickins Cc: Frederic Weisbecker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-generic/vtime.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/asm-generic/vtime.h b/include/asm-generic/vtime.h index e69de29bb2d1..b1a49677fe25 100644 --- a/include/asm-generic/vtime.h +++ b/include/asm-generic/vtime.h @@ -0,0 +1 @@ +/* no content, but patch(1) dislikes empty files */ From 0772dac1dc28ab5a67374303e58c0fe5bff15720 Mon Sep 17 00:00:00 2001 From: Felipe Pena Date: Mon, 30 Sep 2013 13:45:14 -0700 Subject: [PATCH 414/523] arch/parisc/mm/fault.c: fix uninitialized variable usage The FAULT_FLAG_WRITE flag has been set based on uninitialized variable. Fixes a regression added by commit 759496ba6407 ("arch: mm: pass userspace fault flag to generic fault handler") Signed-off-by: Felipe Pena Cc: Johannes Weiner Cc: Michal Hocko Cc: "James E.J. Bottomley" Cc: Helge Deller Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/parisc/mm/fault.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c index d10d27a720c0..00c0ed333a3d 100644 --- a/arch/parisc/mm/fault.c +++ b/arch/parisc/mm/fault.c @@ -182,6 +182,9 @@ void do_page_fault(struct pt_regs *regs, unsigned long code, if (user_mode(regs)) flags |= FAULT_FLAG_USER; + + acc_type = parisc_acctyp(code, regs->iir); + if (acc_type & VM_WRITE) flags |= FAULT_FLAG_WRITE; retry: @@ -196,8 +199,6 @@ retry: good_area: - acc_type = parisc_acctyp(code,regs->iir); - if ((vma->vm_flags & acc_type) != acc_type) goto bad_area; From 117aad1e9e4d97448d1df3f84b08bd65811e6d6a Mon Sep 17 00:00:00 2001 From: Rafael Aquini Date: Mon, 30 Sep 2013 13:45:16 -0700 Subject: [PATCH 415/523] mm: avoid reinserting isolated balloon pages into LRU lists Isolated balloon pages can wrongly end up in LRU lists when migrate_pages() finishes its round without draining all the isolated page list. The same issue can happen when reclaim_clean_pages_from_list() tries to reclaim pages from an isolated page list, before migration, in the CMA path. Such balloon page leak opens a race window against LRU lists shrinkers that leads us to the following kernel panic: BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 IP: [] shrink_page_list+0x24e/0x897 PGD 3cda2067 PUD 3d713067 PMD 0 Oops: 0000 [#1] SMP CPU: 0 PID: 340 Comm: kswapd0 Not tainted 3.12.0-rc1-22626-g4367597 #87 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 RIP: shrink_page_list+0x24e/0x897 RSP: 0000:ffff88003da499b8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff88003e82bd60 RCX: 00000000000657d5 RDX: 0000000000000000 RSI: 000000000000031f RDI: ffff88003e82bd40 RBP: ffff88003da49ab0 R08: 0000000000000001 R09: 0000000081121a45 R10: ffffffff81121a45 R11: ffff88003c4a9a28 R12: ffff88003e82bd40 R13: ffff88003da0e800 R14: 0000000000000001 R15: ffff88003da49d58 FS: 0000000000000000(0000) GS:ffff88003fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000067d9000 CR3: 000000003ace5000 CR4: 00000000000407b0 Call Trace: shrink_inactive_list+0x240/0x3de shrink_lruvec+0x3e0/0x566 __shrink_zone+0x94/0x178 shrink_zone+0x3a/0x82 balance_pgdat+0x32a/0x4c2 kswapd+0x2f0/0x372 kthread+0xa2/0xaa ret_from_fork+0x7c/0xb0 Code: 80 7d 8f 01 48 83 95 68 ff ff ff 00 4c 89 e7 e8 5a 7b 00 00 48 85 c0 49 89 c5 75 08 80 7d 8f 00 74 3e eb 31 48 8b 80 18 01 00 00 <48> 8b 74 0d 48 8b 78 30 be 02 00 00 00 ff d2 eb RIP [] shrink_page_list+0x24e/0x897 RSP CR2: 0000000000000028 ---[ end trace 703d2451af6ffbfd ]--- Kernel panic - not syncing: Fatal exception This patch fixes the issue, by assuring the proper tests are made at putback_movable_pages() & reclaim_clean_pages_from_list() to avoid isolated balloon pages being wrongly reinserted in LRU lists. [akpm@linux-foundation.org: clarify awkward comment text] Signed-off-by: Rafael Aquini Reported-by: Luiz Capitulino Tested-by: Luiz Capitulino Cc: Mel Gorman Cc: Rik van Riel Cc: Hugh Dickins Cc: Johannes Weiner Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/balloon_compaction.h | 25 +++++++++++++++++++++++++ mm/migrate.c | 2 +- mm/vmscan.c | 4 +++- 3 files changed, 29 insertions(+), 2 deletions(-) diff --git a/include/linux/balloon_compaction.h b/include/linux/balloon_compaction.h index f7f1d7169b11..089743ade734 100644 --- a/include/linux/balloon_compaction.h +++ b/include/linux/balloon_compaction.h @@ -158,6 +158,26 @@ static inline bool balloon_page_movable(struct page *page) return false; } +/* + * isolated_balloon_page - identify an isolated balloon page on private + * compaction/migration page lists. + * + * After a compaction thread isolates a balloon page for migration, it raises + * the page refcount to prevent concurrent compaction threads from re-isolating + * the same page. For that reason putback_movable_pages(), or other routines + * that need to identify isolated balloon pages on private pagelists, cannot + * rely on balloon_page_movable() to accomplish the task. + */ +static inline bool isolated_balloon_page(struct page *page) +{ + /* Already isolated balloon pages, by default, have a raised refcount */ + if (page_flags_cleared(page) && !page_mapped(page) && + page_count(page) >= 2) + return __is_movable_balloon_page(page); + + return false; +} + /* * balloon_page_insert - insert a page into the balloon's page list and make * the page->mapping assignment accordingly. @@ -243,6 +263,11 @@ static inline bool balloon_page_movable(struct page *page) return false; } +static inline bool isolated_balloon_page(struct page *page) +{ + return false; +} + static inline bool balloon_page_isolate(struct page *page) { return false; diff --git a/mm/migrate.c b/mm/migrate.c index 9c8d5f59d30b..a26bccd44ccb 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -107,7 +107,7 @@ void putback_movable_pages(struct list_head *l) list_del(&page->lru); dec_zone_page_state(page, NR_ISOLATED_ANON + page_is_file_cache(page)); - if (unlikely(balloon_page_movable(page))) + if (unlikely(isolated_balloon_page(page))) balloon_page_putback(page); else putback_lru_page(page); diff --git a/mm/vmscan.c b/mm/vmscan.c index beb35778c69f..53f2f82f83ae 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -48,6 +48,7 @@ #include #include +#include #include "internal.h" @@ -1113,7 +1114,8 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone, LIST_HEAD(clean_pages); list_for_each_entry_safe(page, next, page_list, lru) { - if (page_is_file_cache(page) && !PageDirty(page)) { + if (page_is_file_cache(page) && !PageDirty(page) && + !isolated_balloon_page(page)) { ClearPageActive(page); list_move(&page->lru, &clean_pages); } From eadb41ae82f802105c0601aa8a0a0e7595826497 Mon Sep 17 00:00:00 2001 From: Vlastimil Babka Date: Mon, 30 Sep 2013 13:45:18 -0700 Subject: [PATCH 416/523] mm/mlock.c: prevent walking off the end of a pagetable in no-pmd configuration MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The function __munlock_pagevec_fill() introduced in commit 7a8010cd3627 ("mm: munlock: manual pte walk in fast path instead of follow_page_mask()") uses pmd_addr_end() for restricting its operation within current page table. This is insufficient on architectures/configurations where pmd is folded and pmd_addr_end() just returns the end of the full range to be walked. In this case, it allows pte++ to walk off the end of a page table resulting in unpredictable behaviour. This patch fixes the function by using pgd_addr_end() and pud_addr_end() before pmd_addr_end(), which will yield correct page table boundary on all configurations. This is similar to what existing page walkers do when walking each level of the page table. Additionaly, the patch clarifies a comment for get_locked_pte() call in the function. Signed-off-by: Vlastimil Babka Reported-by: Fengguang Wu Reviewed-by: Bob Liu Cc: Jörn Engel Cc: Mel Gorman Cc: Michel Lespinasse Cc: Hugh Dickins Cc: Rik van Riel Cc: Johannes Weiner Cc: Michal Hocko Cc: Vlastimil Babka Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/mlock.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/mm/mlock.c b/mm/mlock.c index 67ba6da7d0e3..d480cd6fc475 100644 --- a/mm/mlock.c +++ b/mm/mlock.c @@ -379,10 +379,14 @@ static unsigned long __munlock_pagevec_fill(struct pagevec *pvec, /* * Initialize pte walk starting at the already pinned page where we - * are sure that there is a pte. + * are sure that there is a pte, as it was pinned under the same + * mmap_sem write op. */ pte = get_locked_pte(vma->vm_mm, start, &ptl); - end = min(end, pmd_addr_end(start, end)); + /* Make sure we do not cross the page table boundary */ + end = pgd_addr_end(start, end); + end = pud_addr_end(start, end); + end = pmd_addr_end(start, end); /* The page next to the pinned page is the first we will try to get */ start += PAGE_SIZE; From 080506ad0aa9c9fbc7879cdd290d55624da08c60 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Mon, 30 Sep 2013 13:45:19 -0700 Subject: [PATCH 417/523] block: change config option name for cmdline partition parsing Recently commit bab55417b10c ("block: support embedded device command line partition") introduced CONFIG_CMDLINE_PARSER. However, that name is too generic and sounds like it enables/disables generic kernel boot arg processing, when it really is block specific. Before this option becomes a part of a full/final release, add the BLK_ prefix to it so that it is clear in absence of any other context that it is block specific. In addition, fix up the following less critical items: - help text was not really at all helpful. - index file for Documentation was not updated - add the new arg to Documentation/kernel-parameters.txt - clarify wording in source comments Signed-off-by: Paul Gortmaker Cc: Jens Axboe Cc: Cai Zhiyong Cc: Wei Yongjun Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/block/00-INDEX | 2 ++ Documentation/block/cmdline-partition.txt | 8 ++++---- Documentation/kernel-parameters.txt | 4 ++++ block/Kconfig | 9 +++++++-- block/Makefile | 2 +- block/partitions/Kconfig | 4 ++-- block/partitions/cmdline.c | 8 ++++---- 7 files changed, 24 insertions(+), 13 deletions(-) diff --git a/Documentation/block/00-INDEX b/Documentation/block/00-INDEX index d18ecd827c40..929d9904f74b 100644 --- a/Documentation/block/00-INDEX +++ b/Documentation/block/00-INDEX @@ -6,6 +6,8 @@ capability.txt - Generic Block Device Capability (/sys/block//capability) cfq-iosched.txt - CFQ IO scheduler tunables +cmdline-partition.txt + - how to specify block device partitions on kernel command line data-integrity.txt - Block data integrity deadline-iosched.txt diff --git a/Documentation/block/cmdline-partition.txt b/Documentation/block/cmdline-partition.txt index 2bbf4cc40c3f..525b9f6d7fb4 100644 --- a/Documentation/block/cmdline-partition.txt +++ b/Documentation/block/cmdline-partition.txt @@ -1,9 +1,9 @@ -Embedded device command line partition +Embedded device command line partition parsing ===================================================================== -Read block device partition table from command line. -The partition used for fixed block device (eMMC) embedded device. -It is no MBR, save storage space. Bootloader can be easily accessed +Support for reading the block device partition table from the command line. +It is typically used for fixed block (eMMC) embedded devices. +It has no MBR, so saves storage space. Bootloader can be easily accessed by absolute address of data on the block device. Users can easily change the partition. diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 73d23fdc512b..fcbb736d55fe 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -480,6 +480,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted. Format: ,, See header of drivers/net/hamradio/baycom_ser_hdx.c. + blkdevparts= Manual partition parsing of block device(s) for + embedded devices based on command line input. + See Documentation/block/cmdline-partition.txt + boot_delay= Milliseconds to delay each printk during boot. Values larger than 10 seconds (10000) are changed to no delay (0). diff --git a/block/Kconfig b/block/Kconfig index 7f38e40fee08..2429515c05c2 100644 --- a/block/Kconfig +++ b/block/Kconfig @@ -99,11 +99,16 @@ config BLK_DEV_THROTTLING See Documentation/cgroups/blkio-controller.txt for more information. -config CMDLINE_PARSER +config BLK_CMDLINE_PARSER bool "Block device command line partition parser" default n ---help--- - Parsing command line, get the partitions information. + Enabling this option allows you to specify the partition layout from + the kernel boot args. This is typically of use for embedded devices + which don't otherwise have any standardized method for listing the + partitions on a block device. + + See Documentation/block/cmdline-partition.txt for more information. menu "Partition Types" diff --git a/block/Makefile b/block/Makefile index 4fa4be544ece..671a83d063a5 100644 --- a/block/Makefile +++ b/block/Makefile @@ -18,4 +18,4 @@ obj-$(CONFIG_IOSCHED_CFQ) += cfq-iosched.o obj-$(CONFIG_BLOCK_COMPAT) += compat_ioctl.o obj-$(CONFIG_BLK_DEV_INTEGRITY) += blk-integrity.o -obj-$(CONFIG_CMDLINE_PARSER) += cmdline-parser.o +obj-$(CONFIG_BLK_CMDLINE_PARSER) += cmdline-parser.o diff --git a/block/partitions/Kconfig b/block/partitions/Kconfig index 87a32086535d..9b29a996c311 100644 --- a/block/partitions/Kconfig +++ b/block/partitions/Kconfig @@ -263,7 +263,7 @@ config SYSV68_PARTITION config CMDLINE_PARTITION bool "Command line partition support" if PARTITION_ADVANCED - select CMDLINE_PARSER + select BLK_CMDLINE_PARSER help - Say Y here if you would read the partitions table from bootargs. + Say Y here if you want to read the partition table from bootargs. The format for the command line is just like mtdparts. diff --git a/block/partitions/cmdline.c b/block/partitions/cmdline.c index 56cf4ffad51e..5141b563adf1 100644 --- a/block/partitions/cmdline.c +++ b/block/partitions/cmdline.c @@ -2,15 +2,15 @@ * Copyright (C) 2013 HUAWEI * Author: Cai Zhiyong * - * Read block device partition table from command line. - * The partition used for fixed block device (eMMC) embedded device. - * It is no MBR, save storage space. Bootloader can be easily accessed + * Read block device partition table from the command line. + * Typically used for fixed block (eMMC) embedded devices. + * It has no MBR, so saves storage space. Bootloader can be easily accessed * by absolute address of data on the block device. * Users can easily change the partition. * * The format for the command line is just like mtdparts. * - * Verbose config please reference "Documentation/block/cmdline-partition.txt" + * For further information, see "Documentation/block/cmdline-partition.txt" * */ From 20cb6cab52a21b46e3c0dc7bd23f004f810fb421 Mon Sep 17 00:00:00 2001 From: Wanpeng Li Date: Mon, 30 Sep 2013 13:45:21 -0700 Subject: [PATCH 418/523] mm/hwpoison: fix traversal of hugetlbfs pages to avoid printk flood madvise_hwpoison won't check if the page is small page or huge page and traverses in small page granularity against the range unconditionally, which result in a printk flood "MCE xxx: already hardware poisoned" if the page is a huge page. This patch fixes it by using compound_order(compound_head(page)) for huge page iterator. Testcase: #define _GNU_SOURCE #include #include #include #include #include #include #include #define PAGES_TO_TEST 3 #define PAGE_SIZE 4096 * 512 int main(void) { char *mem; int i; mem = mmap(NULL, PAGES_TO_TEST * PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB, 0, 0); if (madvise(mem, PAGES_TO_TEST * PAGE_SIZE, MADV_HWPOISON) == -1) return -1; munmap(mem, PAGES_TO_TEST * PAGE_SIZE); return 0; } Signed-off-by: Wanpeng Li Reviewed-by: Naoya Horiguchi Acked-by: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/madvise.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/madvise.c b/mm/madvise.c index 6975bc812542..539eeb96b323 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -343,10 +343,11 @@ static long madvise_remove(struct vm_area_struct *vma, */ static int madvise_hwpoison(int bhv, unsigned long start, unsigned long end) { + struct page *p; if (!capable(CAP_SYS_ADMIN)) return -EPERM; - for (; start < end; start += PAGE_SIZE) { - struct page *p; + for (; start < end; start += PAGE_SIZE << + compound_order(compound_head(p))) { int ret; ret = get_user_pages_fast(start, 1, 0, &p); From e76d30e20be5fca46c185a1470b045b89f95edcb Mon Sep 17 00:00:00 2001 From: Wanpeng Li Date: Mon, 30 Sep 2013 13:45:22 -0700 Subject: [PATCH 419/523] mm/hwpoison: fix test for a transparent huge page PageTransHuge() can't guarantee the page is a transparent huge page since it returns true for both transparent huge and hugetlbfs pages. This patch fixes it by checking the page is also !hugetlbfs page. Before patch: [ 121.571128] Injecting memory failure at pfn 23a200 [ 121.571141] MCE 0x23a200: huge page recovery: Delayed [ 140.355100] MCE: Memory failure is now running on 0x23a200 After patch: [ 94.290793] Injecting memory failure at pfn 23a000 [ 94.290800] MCE 0x23a000: huge page recovery: Delayed [ 105.722303] MCE: Software-unpoisoned page 0x23a000 Signed-off-by: Wanpeng Li Reviewed-by: Naoya Horiguchi Acked-by: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memory-failure.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 947ed5413279..3faba33c67cc 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1349,7 +1349,7 @@ int unpoison_memory(unsigned long pfn) * worked by memory_failure() and the page lock is not held yet. * In such case, we yield to memory_failure() and make unpoison fail. */ - if (PageTransHuge(page)) { + if (!PageHuge(page) && PageTransHuge(page)) { pr_info("MCE: Memory failure is now running on %#lx\n", pfn); return 0; } From 2d421acd1568cf2d83739a1afec8e18edb9e3d16 Mon Sep 17 00:00:00 2001 From: Wanpeng Li Date: Mon, 30 Sep 2013 13:45:23 -0700 Subject: [PATCH 420/523] mm/hwpoison: fix false report on 2nd attempt at page recovery If the page is poisoned by software injection w/ MF_COUNT_INCREASED flag, there is a false report during the 2nd attempt at page recovery which is not truthful. This patch fixes it by reporting the first attempt to try free buddy page recovery if MF_COUNT_INCREASED is set. Before patch: [ 346.332041] Injecting memory failure at pfn 200010 [ 346.332189] MCE 0x200010: free buddy, 2nd try page recovery: Delayed After patch: [ 297.742600] Injecting memory failure at pfn 200010 [ 297.742941] MCE 0x200010: free buddy page recovery: Delayed Reviewed-by: Naoya Horiguchi Acked-by: Andi Kleen Signed-off-by: Wanpeng Li Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memory-failure.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 3faba33c67cc..bf3351b5115e 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1114,8 +1114,10 @@ int memory_failure(unsigned long pfn, int trapno, int flags) * shake_page could have turned it free. */ if (is_free_buddy_page(p)) { - action_result(pfn, "free buddy, 2nd try", - DELAYED); + if (flags & MF_COUNT_INCREASED) + action_result(pfn, "free buddy", DELAYED); + else + action_result(pfn, "free buddy, 2nd try", DELAYED); return 0; } action_result(pfn, "non LRU", IGNORED); From fb31ba30fb10fe0ee11739f51669d581b4a1412c Mon Sep 17 00:00:00 2001 From: Wanpeng Li Date: Mon, 30 Sep 2013 13:45:24 -0700 Subject: [PATCH 421/523] mm/hwpoison: fix the lack of one reference count against poisoned page The lack of one reference count against poisoned page for hwpoison_inject w/o hwpoison_filter enabled result in hwpoison detect -1 users still referenced the page, however, the number should be 0 except the poison handler held one after successfully unmap. This patch fix it by hold one referenced count against poisoned page for hwpoison_inject w/ and w/o hwpoison_filter enabled. Before patch: [ 71.902112] Injecting memory failure at pfn 224706 [ 71.902137] MCE 0x224706: dirty LRU page recovery: Failed [ 71.902138] MCE 0x224706: dirty LRU page still referenced by -1 users After patch: [ 94.710860] Injecting memory failure at pfn 215b68 [ 94.710885] MCE 0x215b68: dirty LRU page recovery: Recovered Reviewed-by: Naoya Horiguchi Acked-by: Andi Kleen Signed-off-by: Wanpeng Li Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/hwpoison-inject.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c index afc2daa91c60..4c84678371eb 100644 --- a/mm/hwpoison-inject.c +++ b/mm/hwpoison-inject.c @@ -20,8 +20,6 @@ static int hwpoison_inject(void *data, u64 val) if (!capable(CAP_SYS_ADMIN)) return -EPERM; - if (!hwpoison_filter_enable) - goto inject; if (!pfn_valid(pfn)) return -ENXIO; @@ -33,6 +31,9 @@ static int hwpoison_inject(void *data, u64 val) if (!get_page_unless_zero(hpage)) return 0; + if (!hwpoison_filter_enable) + goto inject; + if (!PageLRU(p) && !PageHuge(p)) shake_page(p, 0); /* From 0e8c665699e953fa58dc1b0b0d09e5dce7343cc7 Mon Sep 17 00:00:00 2001 From: Manfred Spraul Date: Mon, 30 Sep 2013 13:45:25 -0700 Subject: [PATCH 422/523] ipc/sem.c: update sem_otime for all operations In commit 0a2b9d4c7967 ("ipc/sem.c: move wake_up_process out of the spinlock section"), the update of semaphore's sem_otime(last semop time) was moved to one central position (do_smart_update). But since do_smart_update() is only called for operations that modify the array, this means that wait-for-zero semops do not update sem_otime anymore. The fix is simple: Non-alter operations must update sem_otime. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Manfred Spraul Reported-by: Jia He Tested-by: Jia He Cc: Davidlohr Bueso Cc: Mike Galbraith Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/sem.c | 42 +++++++++++++++++++++++++++++------------- 1 file changed, 29 insertions(+), 13 deletions(-) diff --git a/ipc/sem.c b/ipc/sem.c index cd6a733011a2..8c4f59b0204a 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -917,6 +917,24 @@ again: return semop_completed; } +/** + * set_semotime(sma, sops) - set sem_otime + * @sma: semaphore array + * @sops: operations that modified the array, may be NULL + * + * sem_otime is replicated to avoid cache line trashing. + * This function sets one instance to the current time. + */ +static void set_semotime(struct sem_array *sma, struct sembuf *sops) +{ + if (sops == NULL) { + sma->sem_base[0].sem_otime = get_seconds(); + } else { + sma->sem_base[sops[0].sem_num].sem_otime = + get_seconds(); + } +} + /** * do_smart_update(sma, sops, nsops, otime, pt) - optimized update_queue * @sma: semaphore array @@ -967,17 +985,10 @@ static void do_smart_update(struct sem_array *sma, struct sembuf *sops, int nsop } } } - if (otime) { - if (sops == NULL) { - sma->sem_base[0].sem_otime = get_seconds(); - } else { - sma->sem_base[sops[0].sem_num].sem_otime = - get_seconds(); - } - } + if (otime) + set_semotime(sma, sops); } - /* The following counts are associated to each semaphore: * semncnt number of tasks waiting on semval being nonzero * semzcnt number of tasks waiting on semval being zero @@ -1839,12 +1850,17 @@ SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsops, error = perform_atomic_semop(sma, sops, nsops, un, task_tgid_vnr(current)); - if (error <= 0) { - if (alter && error == 0) + if (error == 0) { + /* If the operation was successful, then do + * the required updates. + */ + if (alter) do_smart_update(sma, sops, nsops, 1, &tasks); - - goto out_unlock_free; + else + set_semotime(sma, sops); } + if (error <= 0) + goto out_unlock_free; /* We need to sleep on this operation, so we put the current * task into the pending queue and go to sleep. From 4271b05a227dc6175b66c3d9941aeab09048aeb2 Mon Sep 17 00:00:00 2001 From: Davidlohr Bueso Date: Mon, 30 Sep 2013 13:45:26 -0700 Subject: [PATCH 423/523] ipc,msg: prevent race with rmid in msgsnd,msgrcv This fixes a race in both msgrcv() and msgsnd() between finding the msg and actually dealing with the queue, as another thread can delete shmid underneath us if we are preempted before acquiring the kern_ipc_perm.lock. Manfred illustrates this nicely: Assume a preemptible kernel that is preempted just after msq = msq_obtain_object_check(ns, msqid) in do_msgrcv(). The only lock that is held is rcu_read_lock(). Now the other thread processes IPC_RMID. When the first task is resumed, then it will happily wait for messages on a deleted queue. Fix this by checking for if the queue has been deleted after taking the lock. Signed-off-by: Davidlohr Bueso Reported-by: Manfred Spraul Cc: Rik van Riel Cc: Mike Galbraith Cc: [3.11] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/msg.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/ipc/msg.c b/ipc/msg.c index 9e4310c546ae..558aa91186b6 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -695,6 +695,12 @@ long do_msgsnd(int msqid, long mtype, void __user *mtext, if (ipcperms(ns, &msq->q_perm, S_IWUGO)) goto out_unlock0; + /* raced with RMID? */ + if (msq->q_perm.deleted) { + err = -EIDRM; + goto out_unlock0; + } + err = security_msg_queue_msgsnd(msq, msg, msgflg); if (err) goto out_unlock0; @@ -901,6 +907,13 @@ long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp, int msgfl goto out_unlock1; ipc_lock_object(&msq->q_perm); + + /* raced with RMID? */ + if (msq->q_perm.deleted) { + msg = ERR_PTR(-EIDRM); + goto out_unlock0; + } + msg = find_msg(msq, &msgtyp, mode); if (!IS_ERR(msg)) { /* From 314a8ad0f18ac37887896b288939acd8cb17e208 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Mon, 30 Sep 2013 13:45:27 -0700 Subject: [PATCH 424/523] pidns: fix free_pid() to handle the first fork failure "case 0" in free_pid() assumes that disable_pid_allocation() should clear PIDNS_HASH_ADDING before the last pid goes away. However this doesn't happen if the first fork() fails to create the child reaper which should call disable_pid_allocation(). Signed-off-by: Oleg Nesterov Reviewed-by: "Eric W. Biederman" Cc: "Serge E. Hallyn" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/pid.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/kernel/pid.c b/kernel/pid.c index ebe5e80b10f8..9b9a26698144 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -273,6 +273,11 @@ void free_pid(struct pid *pid) */ wake_up_process(ns->child_reaper); break; + case PIDNS_HASH_ADDING: + /* Handle a fork failure of the first process */ + WARN_ON(ns->child_reaper); + ns->nr_hashed = 0; + /* fall through */ case 0: schedule_work(&ns->proc_work); break; From bf0ea6380724beb64f27a722dfc4b0edabff816e Mon Sep 17 00:00:00 2001 From: Peter Korsgaard Date: Mon, 30 Sep 2013 23:28:20 +0200 Subject: [PATCH 425/523] dm9601: fix IFF_ALLMULTI handling Pass-all-multicast is controlled by bit 3 in RX control, not bit 2 (pass undersized frames). Reported-by: Joseph Chang Signed-off-by: Peter Korsgaard Signed-off-by: David S. Miller --- drivers/net/usb/dm9601.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/usb/dm9601.c b/drivers/net/usb/dm9601.c index 2dbb9460349d..c6867f926cff 100644 --- a/drivers/net/usb/dm9601.c +++ b/drivers/net/usb/dm9601.c @@ -303,7 +303,7 @@ static void dm9601_set_multicast(struct net_device *net) rx_ctl |= 0x02; } else if (net->flags & IFF_ALLMULTI || netdev_mc_count(net) > DM_MAX_MCAST) { - rx_ctl |= 0x04; + rx_ctl |= 0x08; } else if (!netdev_mc_empty(net)) { struct netdev_hw_addr *ha; From b643f85814f69306b9a6e0df34a1c8acb97d3bbd Mon Sep 17 00:00:00 2001 From: Arnaud Ebalard Date: Tue, 1 Oct 2013 00:19:16 +0200 Subject: [PATCH 426/523] ARM: mvebu: add missing DT Mbus ranges and relocate PCIe DT nodes for RN102 When 5e12a613 and 0cd3754a were introduced, Netgear ReadyNAS 102 .dts file was queued for inclusion and missed the update to have Mbus (and then BootROM) ranges properties declared. It also missed the relocation of Armada 370/XP PCIe DT nodes introduced by 14fd8ed0 after de1af8d4. This patch fixes that which makes 3.12-rc3 bootable on the NAS. Signed-off-by: Arnaud Ebalard Signed-off-by: Jason Cooper --- .../arm/boot/dts/armada-370-netgear-rn102.dts | 35 ++++++++++--------- 1 file changed, 19 insertions(+), 16 deletions(-) diff --git a/arch/arm/boot/dts/armada-370-netgear-rn102.dts b/arch/arm/boot/dts/armada-370-netgear-rn102.dts index 40e73be31720..8ac2ac1f69cc 100644 --- a/arch/arm/boot/dts/armada-370-netgear-rn102.dts +++ b/arch/arm/boot/dts/armada-370-netgear-rn102.dts @@ -27,6 +27,25 @@ }; soc { + ranges = ; + + pcie-controller { + status = "okay"; + + /* Connected to Marvell SATA controller */ + pcie@1,0 { + /* Port 0, Lane 0 */ + status = "okay"; + }; + + /* Connected to FL1009 USB 3.0 controller */ + pcie@2,0 { + /* Port 1, Lane 0 */ + status = "okay"; + }; + }; + internal-regs { serial@12000 { clock-frequency = <200000000>; @@ -94,22 +113,6 @@ pwm_polarity = <0>; }; }; - - pcie-controller { - status = "okay"; - - /* Connected to Marvell SATA controller */ - pcie@1,0 { - /* Port 0, Lane 0 */ - status = "okay"; - }; - - /* Connected to FL1009 USB 3.0 controller */ - pcie@2,0 { - /* Port 1, Lane 0 */ - status = "okay"; - }; - }; }; }; From eb2addd4044b4b2ce77693bde5bc810536dd96ee Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michal=20Mal=C3=BD?= Date: Sat, 28 Sep 2013 19:50:27 +0200 Subject: [PATCH 427/523] USB: serial: option: Ignore card reader interface on Huawei E1750 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Hi, my Huawei 3G modem has an embedded Smart Card reader which causes trouble when the modem is being detected (a bunch of " (ttyUSBx): open blocked by driver for more than 7 seconds!" in messages.log). This trivial patch corrects the problem for me. The modem identifies itself as "12d1:1406 Huawei Technologies Co., Ltd. E1750" in lsusb although the description on the body says "Model E173u-1" Signed-off-by: Michal Malý Cc: Bjørn Mork Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 1cf6f125f5f0..80a7104d5ddb 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -81,6 +81,7 @@ static void option_instat_callback(struct urb *urb); #define HUAWEI_VENDOR_ID 0x12D1 #define HUAWEI_PRODUCT_E173 0x140C +#define HUAWEI_PRODUCT_E1750 0x1406 #define HUAWEI_PRODUCT_K4505 0x1464 #define HUAWEI_PRODUCT_K3765 0x1465 #define HUAWEI_PRODUCT_K4605 0x14C6 @@ -567,6 +568,8 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1c23, USB_CLASS_COMM, 0x02, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E173, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t) &net_intf1_blacklist }, + { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E1750, 0xff, 0xff, 0xff), + .driver_info = (kernel_ulong_t) &net_intf2_blacklist }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1441, USB_CLASS_COMM, 0x02, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1442, USB_CLASS_COMM, 0x02, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K4505, 0xff, 0xff, 0xff), From f8747d4a466ab2cafe56112c51b3379f9fdb7a12 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Fri, 27 Sep 2013 13:27:05 -0400 Subject: [PATCH 428/523] tty: Fix pty master read() after slave closes Commit f95499c3030fe1bfad57745f2db1959c5b43dca8, n_tty: Don't wait for buffer work in read() loop creates a race window which can cause a pty master read() to miss the last pty slave write(s) and return -EIO instead, thus signalling the pty slave is closed. This can happen when the pty slave is written and immediately closed but before the tty buffer i/o loop receives the new input; the pty master read() is scheduled, sees its read buffer is empty and the pty slave has been closed, and exits. Because tty_flush_to_ldisc() has significant performance impact for parallel i/o, rather than revert the commit, special case this condition (ie., when the read buffer is empty and the 'other' pty has been closed) and, only then, wait for buffer work to complete before re-testing if the read buffer is still empty. As before, subsequent pty master reads return any available data until no more data is available, and then returns -EIO to indicate the pty slave has closed. Reported-by: Mikael Pettersson Signed-off-by: Peter Hurley Tested-by: Mikael Pettersson Signed-off-by: Greg Kroah-Hartman --- drivers/tty/n_tty.c | 46 +++++++++++++++++++++++++-------------------- 1 file changed, 26 insertions(+), 20 deletions(-) diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 01bf5eb4f238..7a744b69c3d1 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -2183,28 +2183,34 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file, if (!input_available_p(tty, 0)) { if (test_bit(TTY_OTHER_CLOSED, &tty->flags)) { - retval = -EIO; - break; - } - if (tty_hung_up_p(file)) - break; - if (!timeout) - break; - if (file->f_flags & O_NONBLOCK) { - retval = -EAGAIN; - break; - } - if (signal_pending(current)) { - retval = -ERESTARTSYS; - break; - } - n_tty_set_room(tty); - up_read(&tty->termios_rwsem); + up_read(&tty->termios_rwsem); + tty_flush_to_ldisc(tty); + down_read(&tty->termios_rwsem); + if (!input_available_p(tty, 0)) { + retval = -EIO; + break; + } + } else { + if (tty_hung_up_p(file)) + break; + if (!timeout) + break; + if (file->f_flags & O_NONBLOCK) { + retval = -EAGAIN; + break; + } + if (signal_pending(current)) { + retval = -ERESTARTSYS; + break; + } + n_tty_set_room(tty); + up_read(&tty->termios_rwsem); - timeout = schedule_timeout(timeout); + timeout = schedule_timeout(timeout); - down_read(&tty->termios_rwsem); - continue; + down_read(&tty->termios_rwsem); + continue; + } } __set_current_state(TASK_RUNNING); From c9eeec26e32e087359160406f96e0949b3cc6f10 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 27 Sep 2013 03:28:54 -0700 Subject: [PATCH 429/523] tcp: TSQ can use a dynamic limit When TCP Small Queues was added, we used a sysctl to limit amount of packets queues on Qdisc/device queues for a given TCP flow. Problem is this limit is either too big for low rates, or too small for high rates. Now TCP stack has rate estimation in sk->sk_pacing_rate, and TSO auto sizing, it can better control number of packets in Qdisc/device queues. New limit is two packets or at least 1 to 2 ms worth of packets. Low rates flows benefit from this patch by having even smaller number of packets in queues, allowing for faster recovery, better RTT estimations. High rates flows benefit from this patch by allowing more than 2 packets in flight as we had reports this was a limiting factor to reach line rate. [ In particular if TX completion is delayed because of coalescing parameters ] Example for a single flow on 10Gbp link controlled by FQ/pacing 14 packets in flight instead of 2 $ tc -s -d qd qdisc fq 8001: dev eth0 root refcnt 32 limit 10000p flow_limit 100p buckets 1024 quantum 3028 initial_quantum 15140 Sent 1168459366606 bytes 771822841 pkt (dropped 0, overlimits 0 requeues 6822476) rate 9346Mbit 771713pps backlog 953820b 14p requeues 6822476 2047 flow, 2046 inactive, 1 throttled, delay 15673 ns 2372 gc, 0 highprio, 0 retrans, 9739249 throttled, 0 flows_plimit Note that sk_pacing_rate is currently set to twice the actual rate, but this might be refined in the future when a flow is in congestion avoidance. Additional change : skb->destructor should be set to tcp_wfree(). A future patch (for linux 3.13+) might remove tcp_limit_output_bytes Signed-off-by: Eric Dumazet Cc: Wei Liu Cc: Cong Wang Cc: Yuchung Cheng Cc: Neal Cardwell Acked-by: Neal Cardwell Signed-off-by: David S. Miller --- net/ipv4/tcp_output.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 7c83cb8bf137..e6bb8256e59f 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -895,8 +895,7 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it, skb_orphan(skb); skb->sk = sk; - skb->destructor = (sysctl_tcp_limit_output_bytes > 0) ? - tcp_wfree : sock_wfree; + skb->destructor = tcp_wfree; atomic_add(skb->truesize, &sk->sk_wmem_alloc); /* Build TCP header and checksum it. */ @@ -1840,7 +1839,6 @@ static bool tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle, while ((skb = tcp_send_head(sk))) { unsigned int limit; - tso_segs = tcp_init_tso_segs(sk, skb, mss_now); BUG_ON(!tso_segs); @@ -1869,13 +1867,20 @@ static bool tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle, break; } - /* TSQ : sk_wmem_alloc accounts skb truesize, - * including skb overhead. But thats OK. + /* TCP Small Queues : + * Control number of packets in qdisc/devices to two packets / or ~1 ms. + * This allows for : + * - better RTT estimation and ACK scheduling + * - faster recovery + * - high rates */ - if (atomic_read(&sk->sk_wmem_alloc) >= sysctl_tcp_limit_output_bytes) { + limit = max(skb->truesize, sk->sk_pacing_rate >> 10); + + if (atomic_read(&sk->sk_wmem_alloc) > limit) { set_bit(TSQ_THROTTLED, &tp->tsq_flags); break; } + limit = mss_now; if (tso_segs > 1 && !tcp_urg_mode(tp)) limit = tcp_mss_split_point(sk, skb, mss_now, From 5a0068deb611109c5ba77358be533f763f395ee4 Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Fri, 27 Sep 2013 12:22:15 -0400 Subject: [PATCH 430/523] bonding: Fix broken promiscuity reference counting issue Recently grabbed this report: https://bugzilla.redhat.com/show_bug.cgi?id=1005567 Of an issue in which the bonding driver, with an attached vlan encountered the following errors when bond0 was taken down and back up: dummy1: promiscuity touches roof, set promiscuity failed. promiscuity feature of device might be broken. The error occurs because, during __bond_release_one, if we release our last slave, we take on a random mac address and issue a NETDEV_CHANGEADDR notification. With an attached vlan, the vlan may see that the vlan and bond mac address were in sync, but no longer are. This triggers a call to dev_uc_add and dev_set_rx_mode, which enables IFF_PROMISC on the bond device. Then, when we complete __bond_release_one, we use the current state of the bond flags to determine if we should decrement the promiscuity of the releasing slave. But since the bond changed promiscuity state during the release operation, we incorrectly decrement the slave promisc count when it wasn't in promiscuous mode to begin with, causing the above error Fix is pretty simple, just cache the bonding flags at the start of the function and use those when determining the need to set promiscuity. This is also needed for the ALLMULTI flag CC: Jay Vosburgh CC: Andy Gospodarek CC: Mark Wu CC: "David S. Miller" Reported-by: Mark Wu Signed-off-by: David S. Miller --- drivers/net/bonding/bond_main.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 55bbb8b8200c..e883bfe2e727 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1724,6 +1724,7 @@ static int __bond_release_one(struct net_device *bond_dev, struct bonding *bond = netdev_priv(bond_dev); struct slave *slave, *oldcurrent; struct sockaddr addr; + int old_flags = bond_dev->flags; netdev_features_t old_features = bond_dev->features; /* slave is not a slave or master is not master of this slave */ @@ -1855,12 +1856,18 @@ static int __bond_release_one(struct net_device *bond_dev, * bond_change_active_slave(..., NULL) */ if (!USES_PRIMARY(bond->params.mode)) { - /* unset promiscuity level from slave */ - if (bond_dev->flags & IFF_PROMISC) + /* unset promiscuity level from slave + * NOTE: The NETDEV_CHANGEADDR call above may change the value + * of the IFF_PROMISC flag in the bond_dev, but we need the + * value of that flag before that change, as that was the value + * when this slave was attached, so we cache at the start of the + * function and use it here. Same goes for ALLMULTI below + */ + if (old_flags & IFF_PROMISC) dev_set_promiscuity(slave_dev, -1); /* unset allmulti level from slave */ - if (bond_dev->flags & IFF_ALLMULTI) + if (old_flags & IFF_ALLMULTI) dev_set_allmulti(slave_dev, -1); bond_hw_addr_flush(bond_dev, slave_dev); From 3f3f0960aff951c5df6e42ce292d1593a2520646 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 30 Sep 2013 21:16:17 -0700 Subject: [PATCH 431/523] Revert "powerpc/83xx: gianfar_ptp: select 1588 clock source through dts file" This reverts commit 894116bd0e9b7749a0c4b6c62dec13c2a0ccef68. I applied the wrong version of this patch, correct version coming up. Signed-off-by: David S. Miller --- .../devicetree/bindings/net/fsl-tsec-phy.txt | 16 +--------------- drivers/net/ethernet/freescale/gianfar_ptp.c | 4 +--- 2 files changed, 2 insertions(+), 18 deletions(-) diff --git a/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt b/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt index eb06059f3cf3..2c6be0377f55 100644 --- a/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt +++ b/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt @@ -86,7 +86,6 @@ General Properties: Clock Properties: - - fsl,cksel Timer reference clock source. - fsl,tclk-period Timer reference clock period in nanoseconds. - fsl,tmr-prsc Prescaler, divides the output clock. - fsl,tmr-add Frequency compensation value. @@ -98,7 +97,7 @@ Clock Properties: clock. You must choose these carefully for the clock to work right. Here is how to figure good values: - TimerOsc = selected reference clock MHz + TimerOsc = system clock MHz tclk_period = desired clock period nanoseconds NominalFreq = 1000 / tclk_period MHz FreqDivRatio = TimerOsc / NominalFreq (must be greater that 1.0) @@ -115,18 +114,6 @@ Clock Properties: Pulse Per Second (PPS) signal, since this will be offered to the PPS subsystem to synchronize the Linux clock. - "fsl,cksel" property allows to select different reference clock - sources: - - <0> - external high precision timer reference clock (TSEC_TMR_CLK - input is used for this purpose); - <1> - eTSEC system clock; - <2> - eTSEC1 transmit clock; - <3> - RTC clock input. - - When this attribute is not used, eTSEC system clock will serve as - IEEE 1588 timer reference clock. - Example: ptp_clock@24E00 { @@ -134,7 +121,6 @@ Example: reg = <0x24E00 0xB0>; interrupts = <12 0x8 13 0x8>; interrupt-parent = < &ipic >; - fsl,cksel = <1>; fsl,tclk-period = <10>; fsl,tmr-prsc = <100>; fsl,tmr-add = <0x999999A4>; diff --git a/drivers/net/ethernet/freescale/gianfar_ptp.c b/drivers/net/ethernet/freescale/gianfar_ptp.c index e006a09ba899..098f133908ae 100644 --- a/drivers/net/ethernet/freescale/gianfar_ptp.c +++ b/drivers/net/ethernet/freescale/gianfar_ptp.c @@ -452,9 +452,7 @@ static int gianfar_ptp_probe(struct platform_device *dev) err = -ENODEV; etsects->caps = ptp_gianfar_caps; - - if (get_of_u32(node, "fsl,cksel", &etsects->cksel)) - etsects->cksel = DEFAULT_CKSEL; + etsects->cksel = DEFAULT_CKSEL; if (get_of_u32(node, "fsl,tclk-period", &etsects->tclk_period) || get_of_u32(node, "fsl,tmr-prsc", &etsects->tmr_prsc) || From e58f6f4fb4eada7867014bfaec898f03afbce5c2 Mon Sep 17 00:00:00 2001 From: Aida Mynzhasova Date: Fri, 27 Sep 2013 17:40:27 +0400 Subject: [PATCH 432/523] powerpc/83xx: gianfar_ptp: select 1588 clock source through dts file Currently IEEE 1588 timer reference clock source is determined through hard-coded value in gianfar_ptp driver. This patch allows to select ptp clock source by means of device tree file node. For instance: fsl,cksel = <0>; for using external (TSEC_TMR_CLK input) high precision timer reference clock. Other acceptable values: <1> : eTSEC system clock <2> : eTSEC1 transmit clock <3> : RTC clock input When this attribute isn't used, eTSEC system clock will serve as IEEE 1588 timer reference clock. Signed-off-by: Aida Mynzhasova Acked-by: Kumar Gala Signed-off-by: David S. Miller --- .../devicetree/bindings/net/fsl-tsec-phy.txt | 18 +++++++++++++++++- drivers/net/ethernet/freescale/gianfar_ptp.c | 4 +++- 2 files changed, 20 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt b/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt index 2c6be0377f55..d2ea4605d078 100644 --- a/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt +++ b/Documentation/devicetree/bindings/net/fsl-tsec-phy.txt @@ -86,6 +86,7 @@ General Properties: Clock Properties: + - fsl,cksel Timer reference clock source. - fsl,tclk-period Timer reference clock period in nanoseconds. - fsl,tmr-prsc Prescaler, divides the output clock. - fsl,tmr-add Frequency compensation value. @@ -97,7 +98,7 @@ Clock Properties: clock. You must choose these carefully for the clock to work right. Here is how to figure good values: - TimerOsc = system clock MHz + TimerOsc = selected reference clock MHz tclk_period = desired clock period nanoseconds NominalFreq = 1000 / tclk_period MHz FreqDivRatio = TimerOsc / NominalFreq (must be greater that 1.0) @@ -114,6 +115,20 @@ Clock Properties: Pulse Per Second (PPS) signal, since this will be offered to the PPS subsystem to synchronize the Linux clock. + Reference clock source is determined by the value, which is holded + in CKSEL bits in TMR_CTRL register. "fsl,cksel" property keeps the + value, which will be directly written in those bits, that is why, + according to reference manual, the next clock sources can be used: + + <0> - external high precision timer reference clock (TSEC_TMR_CLK + input is used for this purpose); + <1> - eTSEC system clock; + <2> - eTSEC1 transmit clock; + <3> - RTC clock input. + + When this attribute is not used, eTSEC system clock will serve as + IEEE 1588 timer reference clock. + Example: ptp_clock@24E00 { @@ -121,6 +136,7 @@ Example: reg = <0x24E00 0xB0>; interrupts = <12 0x8 13 0x8>; interrupt-parent = < &ipic >; + fsl,cksel = <1>; fsl,tclk-period = <10>; fsl,tmr-prsc = <100>; fsl,tmr-add = <0x999999A4>; diff --git a/drivers/net/ethernet/freescale/gianfar_ptp.c b/drivers/net/ethernet/freescale/gianfar_ptp.c index 098f133908ae..e006a09ba899 100644 --- a/drivers/net/ethernet/freescale/gianfar_ptp.c +++ b/drivers/net/ethernet/freescale/gianfar_ptp.c @@ -452,7 +452,9 @@ static int gianfar_ptp_probe(struct platform_device *dev) err = -ENODEV; etsects->caps = ptp_gianfar_caps; - etsects->cksel = DEFAULT_CKSEL; + + if (get_of_u32(node, "fsl,cksel", &etsects->cksel)) + etsects->cksel = DEFAULT_CKSEL; if (get_of_u32(node, "fsl,tclk-period", &etsects->tclk_period) || get_of_u32(node, "fsl,tmr-prsc", &etsects->tmr_prsc) || From 3da812d860755925da890e8c713f2d2e2d7b1bae Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Sun, 29 Sep 2013 05:40:50 +0200 Subject: [PATCH 433/523] ipv6: gre: correct calculation of max_headroom gre_hlen already accounts for sizeof(struct ipv6_hdr) + gre header, so initialize max_headroom to zero. Otherwise the if (encap_limit >= 0) { max_headroom += 8; mtu -= 8; } increments an uninitialized variable before max_headroom was reset. Found with coverity: 728539 Cc: Dmitry Kozlov Signed-off-by: Hannes Frederic Sowa Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv6/ip6_gre.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 6b26e9feafb9..7bb5446b9d73 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -618,7 +618,7 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb, struct ip6_tnl *tunnel = netdev_priv(dev); struct net_device *tdev; /* Device to other host */ struct ipv6hdr *ipv6h; /* Our new IP header */ - unsigned int max_headroom; /* The extra header space needed */ + unsigned int max_headroom = 0; /* The extra header space needed */ int gre_hlen; struct ipv6_tel_txoption opt; int mtu; @@ -693,7 +693,7 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb, skb_scrub_packet(skb, !net_eq(tunnel->net, dev_net(dev))); - max_headroom = LL_RESERVED_SPACE(tdev) + gre_hlen + dst->header_len; + max_headroom += LL_RESERVED_SPACE(tdev) + gre_hlen + dst->header_len; if (skb_headroom(skb) < max_headroom || skb_shared(skb) || (skb_cloned(skb) && !skb_clone_writable(skb, 0))) { From 437a3ae1d0b42197928d52e1108bc2fdc14d23fd Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Mon, 30 Sep 2013 15:18:27 +0200 Subject: [PATCH 434/523] ethernet: moxa: fix incorrect placement of __initdata tag __initdata tag should be placed between the variable name and equal sign for the variable to be placed in the intended .init.data section. In this particular case __initdata is incorrect as moxart_mac_driver can be used after the driver gets initialized. Also while at it static-ize moxart_mac_driver. Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Kyungmin Park Signed-off-by: David S. Miller --- drivers/net/ethernet/moxa/moxart_ether.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/moxa/moxart_ether.c b/drivers/net/ethernet/moxa/moxart_ether.c index 83c2091c9c23..bd1a2d2bc2ae 100644 --- a/drivers/net/ethernet/moxa/moxart_ether.c +++ b/drivers/net/ethernet/moxa/moxart_ether.c @@ -543,7 +543,7 @@ static const struct of_device_id moxart_mac_match[] = { { } }; -struct __initdata platform_driver moxart_mac_driver = { +static struct platform_driver moxart_mac_driver = { .probe = moxart_mac_probe, .remove = moxart_remove, .driver = { From e2401654dd0f5f3fb7a8d80dad9554d73d7ca394 Mon Sep 17 00:00:00 2001 From: Salam Noureddine Date: Sun, 29 Sep 2013 13:39:42 -0700 Subject: [PATCH 435/523] ipv4 igmp: use in_dev_put in timer handlers instead of __in_dev_put It is possible for the timer handlers to run after the call to ip_mc_down so use in_dev_put instead of __in_dev_put in the handler function in order to do proper cleanup when the refcnt reaches 0. Otherwise, the refcnt can reach zero without the in_device being destroyed and we end up leaking a reference to the net_device and see messages like the following, unregister_netdevice: waiting for eth0 to become free. Usage count = 1 Tested on linux-3.4.43. Signed-off-by: Salam Noureddine Signed-off-by: David S. Miller --- net/ipv4/igmp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index dace87f06e5f..7defdc9ba167 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -736,7 +736,7 @@ static void igmp_gq_timer_expire(unsigned long data) in_dev->mr_gq_running = 0; igmpv3_send_report(in_dev, NULL); - __in_dev_put(in_dev); + in_dev_put(in_dev); } static void igmp_ifc_timer_expire(unsigned long data) @@ -749,7 +749,7 @@ static void igmp_ifc_timer_expire(unsigned long data) igmp_ifc_start_timer(in_dev, unsolicited_report_interval(in_dev)); } - __in_dev_put(in_dev); + in_dev_put(in_dev); } static void igmp_ifc_event(struct in_device *in_dev) From 9260d3e1013701aa814d10c8fc6a9f92bd17d643 Mon Sep 17 00:00:00 2001 From: Salam Noureddine Date: Sun, 29 Sep 2013 13:41:34 -0700 Subject: [PATCH 436/523] ipv6 mcast: use in6_dev_put in timer handlers instead of __in6_dev_put It is possible for the timer handlers to run after the call to ipv6_mc_down so use in6_dev_put instead of __in6_dev_put in the handler function in order to do proper cleanup when the refcnt reaches 0. Otherwise, the refcnt can reach zero without the inet6_dev being destroyed and we end up leaking a reference to the net_device and see messages like the following, unregister_netdevice: waiting for eth0 to become free. Usage count = 1 Tested on linux-3.4.43. Signed-off-by: Salam Noureddine Signed-off-by: David S. Miller --- net/ipv6/mcast.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c index 096cd67b737c..d18f9f903db6 100644 --- a/net/ipv6/mcast.c +++ b/net/ipv6/mcast.c @@ -2034,7 +2034,7 @@ static void mld_dad_timer_expire(unsigned long data) if (idev->mc_dad_count) mld_dad_start_timer(idev, idev->mc_maxdelay); } - __in6_dev_put(idev); + in6_dev_put(idev); } static int ip6_mc_del1_src(struct ifmcaddr6 *pmc, int sfmode, @@ -2379,7 +2379,7 @@ static void mld_gq_timer_expire(unsigned long data) idev->mc_gq_running = 0; mld_send_report(idev, NULL); - __in6_dev_put(idev); + in6_dev_put(idev); } static void mld_ifc_timer_expire(unsigned long data) @@ -2392,7 +2392,7 @@ static void mld_ifc_timer_expire(unsigned long data) if (idev->mc_ifc_count) mld_ifc_start_timer(idev, idev->mc_maxdelay); } - __in6_dev_put(idev); + in6_dev_put(idev); } static void mld_ifc_event(struct inet6_dev *idev) From 45906723578f768d029ba7774cd97b435f2c5125 Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Mon, 30 Sep 2013 14:16:41 +0200 Subject: [PATCH 437/523] skbuff: size of hole is wrong in a comment Since commit c93bdd0e03e8 ("netvm: allow skb allocation to use PFMEMALLOC reserves"), hole size is one bit less than what is written in the comment. Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller --- include/linux/skbuff.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 2ddb48d9312c..c2d89335f637 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -498,7 +498,7 @@ struct sk_buff { * headers if needed */ __u8 encapsulation:1; - /* 7/9 bit hole (depending on ndisc_nodetype presence) */ + /* 6/8 bit hole (depending on ndisc_nodetype presence) */ kmemcheck_bitfield_end(flags2); #if defined CONFIG_NET_DMA || defined CONFIG_NET_RX_BUSY_POLL From ded797547548a5b8e7b92383a41e4c0e6b0ecb7f Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Tue, 24 Sep 2013 00:50:25 +0200 Subject: [PATCH 438/523] irq: Force hardirq exit's softirq processing on its own stack The commit facd8b80c67a3cf64a467c4a2ac5fb31f2e6745b ("irq: Sanitize invoke_softirq") converted irq exit calls of do_softirq() to __do_softirq() on all architectures, assuming it was only used there for its irq disablement properties. But as a side effect, the softirqs processed in the end of the hardirq are always called on the inline current stack that is used by irq_exit() instead of the softirq stack provided by the archs that override do_softirq(). The result is mostly safe if the architecture runs irq_exit() on a separate irq stack because then softirqs are processed on that same stack that is near empty at this stage (assuming hardirq aren't nesting). Otherwise irq_exit() runs in the task stack and so does the softirq too. The interrupted call stack can be randomly deep already and the softirq can dig through it even further. To add insult to the injury, this softirq can be interrupted by a new hardirq, maximizing the chances for a stack overrun as reported in powerpc for example: do_IRQ: stack overflow: 1920 CPU: 0 PID: 1602 Comm: qemu-system-ppc Not tainted 3.10.4-300.1.fc19.ppc64p7 #1 Call Trace: [c0000000050a8740] .show_stack+0x130/0x200 (unreliable) [c0000000050a8810] .dump_stack+0x28/0x3c [c0000000050a8880] .do_IRQ+0x2b8/0x2c0 [c0000000050a8930] hardware_interrupt_common+0x154/0x180 --- Exception: 501 at .cp_start_xmit+0x3a4/0x820 [8139cp] LR = .cp_start_xmit+0x390/0x820 [8139cp] [c0000000050a8d40] .dev_hard_start_xmit+0x394/0x640 [c0000000050a8e00] .sch_direct_xmit+0x110/0x260 [c0000000050a8ea0] .dev_queue_xmit+0x260/0x630 [c0000000050a8f40] .br_dev_queue_push_xmit+0xc4/0x130 [bridge] [c0000000050a8fc0] .br_dev_xmit+0x198/0x270 [bridge] [c0000000050a9070] .dev_hard_start_xmit+0x394/0x640 [c0000000050a9130] .dev_queue_xmit+0x428/0x630 [c0000000050a91d0] .ip_finish_output+0x2a4/0x550 [c0000000050a9290] .ip_local_out+0x50/0x70 [c0000000050a9310] .ip_queue_xmit+0x148/0x420 [c0000000050a93b0] .tcp_transmit_skb+0x4e4/0xaf0 [c0000000050a94a0] .__tcp_ack_snd_check+0x7c/0xf0 [c0000000050a9520] .tcp_rcv_established+0x1e8/0x930 [c0000000050a95f0] .tcp_v4_do_rcv+0x21c/0x570 [c0000000050a96c0] .tcp_v4_rcv+0x734/0x930 [c0000000050a97a0] .ip_local_deliver_finish+0x184/0x360 [c0000000050a9840] .ip_rcv_finish+0x148/0x400 [c0000000050a98d0] .__netif_receive_skb_core+0x4f8/0xb00 [c0000000050a99d0] .netif_receive_skb+0x44/0x110 [c0000000050a9a70] .br_handle_frame_finish+0x2bc/0x3f0 [bridge] [c0000000050a9b20] .br_nf_pre_routing_finish+0x2ac/0x420 [bridge] [c0000000050a9bd0] .br_nf_pre_routing+0x4dc/0x7d0 [bridge] [c0000000050a9c70] .nf_iterate+0x114/0x130 [c0000000050a9d30] .nf_hook_slow+0xb4/0x1e0 [c0000000050a9e00] .br_handle_frame+0x290/0x330 [bridge] [c0000000050a9ea0] .__netif_receive_skb_core+0x34c/0xb00 [c0000000050a9fa0] .netif_receive_skb+0x44/0x110 [c0000000050aa040] .napi_gro_receive+0xe8/0x120 [c0000000050aa0c0] .cp_rx_poll+0x31c/0x590 [8139cp] [c0000000050aa1d0] .net_rx_action+0x1dc/0x310 [c0000000050aa2b0] .__do_softirq+0x158/0x330 [c0000000050aa3b0] .irq_exit+0xc8/0x110 [c0000000050aa430] .do_IRQ+0xdc/0x2c0 [c0000000050aa4e0] hardware_interrupt_common+0x154/0x180 --- Exception: 501 at .bad_range+0x1c/0x110 LR = .get_page_from_freelist+0x908/0xbb0 [c0000000050aa7d0] .list_del+0x18/0x50 (unreliable) [c0000000050aa850] .get_page_from_freelist+0x908/0xbb0 [c0000000050aa9e0] .__alloc_pages_nodemask+0x21c/0xae0 [c0000000050aaba0] .alloc_pages_vma+0xd0/0x210 [c0000000050aac60] .handle_pte_fault+0x814/0xb70 [c0000000050aad50] .__get_user_pages+0x1a4/0x640 [c0000000050aae60] .get_user_pages_fast+0xec/0x160 [c0000000050aaf10] .__gfn_to_pfn_memslot+0x3b0/0x430 [kvm] [c0000000050aafd0] .kvmppc_gfn_to_pfn+0x64/0x130 [kvm] [c0000000050ab070] .kvmppc_mmu_map_page+0x94/0x530 [kvm] [c0000000050ab190] .kvmppc_handle_pagefault+0x174/0x610 [kvm] [c0000000050ab270] .kvmppc_handle_exit_pr+0x464/0x9b0 [kvm] [c0000000050ab320] kvm_start_lightweight+0x1ec/0x1fc [kvm] [c0000000050ab4f0] .kvmppc_vcpu_run_pr+0x168/0x3b0 [kvm] [c0000000050ab9c0] .kvmppc_vcpu_run+0xc8/0xf0 [kvm] [c0000000050aba50] .kvm_arch_vcpu_ioctl_run+0x5c/0x1a0 [kvm] [c0000000050abae0] .kvm_vcpu_ioctl+0x478/0x730 [kvm] [c0000000050abc90] .do_vfs_ioctl+0x4ec/0x7c0 [c0000000050abd80] .SyS_ioctl+0xd4/0xf0 [c0000000050abe30] syscall_exit+0x0/0x98 Since this is a regression, this patch proposes a minimalistic and low-risk solution by blindly forcing the hardirq exit processing of softirqs on the softirq stack. This way we should reduce significantly the opportunities for task stack overflow dug by softirqs. Longer term solutions may involve extending the hardirq stack coverage to irq_exit(), etc... Reported-by: Benjamin Herrenschmidt Acked-by: Linus Torvalds Signed-off-by: Frederic Weisbecker Cc: #3.9.. Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Peter Zijlstra Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Paul Mackerras Cc: James Hogan Cc: James E.J. Bottomley Cc: Helge Deller Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: David S. Miller Cc: Andrew Morton --- kernel/softirq.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/kernel/softirq.c b/kernel/softirq.c index 53cc09ceb0b8..d7d498d8cc4f 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -328,10 +328,19 @@ void irq_enter(void) static inline void invoke_softirq(void) { - if (!force_irqthreads) - __do_softirq(); - else + if (!force_irqthreads) { + /* + * We can safely execute softirq on the current stack if + * it is the irq stack, because it should be near empty + * at this stage. But we have no way to know if the arch + * calls irq_exit() on the irq stack. So call softirq + * in its own stack to prevent from any overrun on top + * of a potentially deep task stack. + */ + do_softirq(); + } else { wakeup_softirqd(); + } } static inline void tick_irq_exit(void) From fa365e4d729065b5e85165df3dc9699ed47489cc Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Wed, 25 Sep 2013 02:36:52 +0200 Subject: [PATCH 439/523] gpio/omap: maintain GPIO and IRQ usage separately The GPIO OMAP controller pins can be used as IRQ and GPIO independently so is necessary to keep track GPIO pins and IRQ lines usage separately to make sure that the bank will always be enabled while being used. Also move gpio_is_input() definition in preparation for the next patch that setups the controller's irq_chip driver when a caller requests an interrupt line. Cc: stable@vger.kernel.org Acked-by: Stephen Warren Tested-by: George Cherian Tested-by: Aaro Koskinen Tested-by: Lars Poeschel Reviewed-by: Kevin Hilman Tested-by: Kevin Hilman Acked-by: Santosh Shilimkar Acked-by: Tony Lindgren Signed-off-by: Javier Martinez Canillas Signed-off-by: Linus Walleij --- drivers/gpio/gpio-omap.c | 35 +++++++++++++++++++++-------------- 1 file changed, 21 insertions(+), 14 deletions(-) diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index 0ff43552d472..a4fe038d090e 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -63,6 +63,7 @@ struct gpio_bank { struct gpio_chip chip; struct clk *dbck; u32 mod_usage; + u32 irq_usage; u32 dbck_enable_mask; bool dbck_enabled; struct device *dev; @@ -86,6 +87,9 @@ struct gpio_bank { #define GPIO_BIT(bank, gpio) (1 << GPIO_INDEX(bank, gpio)) #define GPIO_MOD_CTRL_BIT BIT(0) +#define BANK_USED(bank) (bank->mod_usage || bank->irq_usage) +#define LINE_USED(line, offset) (line & (1 << offset)) + static int irq_to_gpio(struct gpio_bank *bank, unsigned int gpio_irq) { return bank->chip.base + gpio_irq; @@ -420,6 +424,13 @@ static int _set_gpio_triggering(struct gpio_bank *bank, int gpio, return 0; } +static int gpio_is_input(struct gpio_bank *bank, int mask) +{ + void __iomem *reg = bank->base + bank->regs->direction; + + return __raw_readl(reg) & mask; +} + static int gpio_irq_type(struct irq_data *d, unsigned type) { struct gpio_bank *bank = irq_data_get_irq_chip_data(d); @@ -427,7 +438,7 @@ static int gpio_irq_type(struct irq_data *d, unsigned type) int retval; unsigned long flags; - if (WARN_ON(!bank->mod_usage)) + if (WARN_ON(!BANK_USED(bank))) return -EINVAL; #ifdef CONFIG_ARCH_OMAP1 @@ -447,6 +458,7 @@ static int gpio_irq_type(struct irq_data *d, unsigned type) spin_lock_irqsave(&bank->lock, flags); retval = _set_gpio_triggering(bank, GPIO_INDEX(bank, gpio), type); + bank->irq_usage |= 1 << GPIO_INDEX(bank, gpio); spin_unlock_irqrestore(&bank->lock, flags); if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH)) @@ -603,7 +615,7 @@ static int omap_gpio_request(struct gpio_chip *chip, unsigned offset) * If this is the first gpio_request for the bank, * enable the bank module. */ - if (!bank->mod_usage) + if (!BANK_USED(bank)) pm_runtime_get_sync(bank->dev); spin_lock_irqsave(&bank->lock, flags); @@ -619,7 +631,7 @@ static int omap_gpio_request(struct gpio_chip *chip, unsigned offset) __raw_writel(__raw_readl(reg) | (1 << offset), reg); } - if (bank->regs->ctrl && !bank->mod_usage) { + if (bank->regs->ctrl && !BANK_USED(bank)) { void __iomem *reg = bank->base + bank->regs->ctrl; u32 ctrl; @@ -654,7 +666,7 @@ static void omap_gpio_free(struct gpio_chip *chip, unsigned offset) bank->mod_usage &= ~(1 << offset); - if (bank->regs->ctrl && !bank->mod_usage) { + if (bank->regs->ctrl && !BANK_USED(bank)) { void __iomem *reg = bank->base + bank->regs->ctrl; u32 ctrl; @@ -672,7 +684,7 @@ static void omap_gpio_free(struct gpio_chip *chip, unsigned offset) * If this is the last gpio to be freed in the bank, * disable the bank module. */ - if (!bank->mod_usage) + if (!BANK_USED(bank)) pm_runtime_put(bank->dev); } @@ -762,8 +774,10 @@ static void gpio_irq_shutdown(struct irq_data *d) struct gpio_bank *bank = irq_data_get_irq_chip_data(d); unsigned int gpio = irq_to_gpio(bank, d->hwirq); unsigned long flags; + unsigned offset = GPIO_INDEX(bank, gpio); spin_lock_irqsave(&bank->lock, flags); + bank->irq_usage &= ~(1 << offset); _reset_gpio(bank, gpio); spin_unlock_irqrestore(&bank->lock, flags); } @@ -897,13 +911,6 @@ static int gpio_input(struct gpio_chip *chip, unsigned offset) return 0; } -static int gpio_is_input(struct gpio_bank *bank, int mask) -{ - void __iomem *reg = bank->base + bank->regs->direction; - - return __raw_readl(reg) & mask; -} - static int gpio_get(struct gpio_chip *chip, unsigned offset) { struct gpio_bank *bank; @@ -1400,7 +1407,7 @@ void omap2_gpio_prepare_for_idle(int pwr_mode) struct gpio_bank *bank; list_for_each_entry(bank, &omap_gpio_list, node) { - if (!bank->mod_usage || !bank->loses_context) + if (!BANK_USED(bank) || !bank->loses_context) continue; bank->power_mode = pwr_mode; @@ -1414,7 +1421,7 @@ void omap2_gpio_resume_after_idle(void) struct gpio_bank *bank; list_for_each_entry(bank, &omap_gpio_list, node) { - if (!bank->mod_usage || !bank->loses_context) + if (!BANK_USED(bank) || !bank->loses_context) continue; pm_runtime_get_sync(bank->dev); From fac7fa162a19100298d5d91359960037dc5bfca9 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Wed, 25 Sep 2013 02:36:54 +0200 Subject: [PATCH 440/523] gpio/omap: auto-setup a GPIO when used as an IRQ The OMAP GPIO controller HW requires a pin to be configured in GPIO input mode in order to operate as an interrupt input. Since drivers should not be aware of whether an interrupt pin is also a GPIO or not, the HW should be fully configured/enabled as an IRQ if a driver solely uses IRQ APIs such as request_irq(), and never calls any GPIO-related APIs. As such, add the missing HW setup to the OMAP GPIO controller's irq_chip driver. Since this bypasses the GPIO subsystem we have to ensure that another driver won't be able to request the same GPIO pin that is used as an IRQ and set its direction as output. Requesting the GPIO and setting its direction as input is allowed though. This fixes smsc911x ethernet support for tobi and igep OMAP3 boards and OMAP4 SDP SPI based ethernet that use a GPIO as an interrupt line. Cc: stable@vger.kernel.org Acked-by: Stephen Warren Tested-by: George Cherian Tested-by: Aaro Koskinen Tested-by: Lars Poeschel Reviewed-by: Kevin Hilman Tested-by: Kevin Hilman Acked-by: Santosh Shilimkar Acked-by: Tony Lindgren Signed-off-by: Javier Martinez Canillas Signed-off-by: Linus Walleij --- drivers/gpio/gpio-omap.c | 129 +++++++++++++++++++++++++-------------- 1 file changed, 83 insertions(+), 46 deletions(-) diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index a4fe038d090e..89675f862308 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -424,6 +424,52 @@ static int _set_gpio_triggering(struct gpio_bank *bank, int gpio, return 0; } +static void _enable_gpio_module(struct gpio_bank *bank, unsigned offset) +{ + if (bank->regs->pinctrl) { + void __iomem *reg = bank->base + bank->regs->pinctrl; + + /* Claim the pin for MPU */ + __raw_writel(__raw_readl(reg) | (1 << offset), reg); + } + + if (bank->regs->ctrl && !BANK_USED(bank)) { + void __iomem *reg = bank->base + bank->regs->ctrl; + u32 ctrl; + + ctrl = __raw_readl(reg); + /* Module is enabled, clocks are not gated */ + ctrl &= ~GPIO_MOD_CTRL_BIT; + __raw_writel(ctrl, reg); + bank->context.ctrl = ctrl; + } +} + +static void _disable_gpio_module(struct gpio_bank *bank, unsigned offset) +{ + void __iomem *base = bank->base; + + if (bank->regs->wkup_en && + !LINE_USED(bank->mod_usage, offset) && + !LINE_USED(bank->irq_usage, offset)) { + /* Disable wake-up during idle for dynamic tick */ + _gpio_rmw(base, bank->regs->wkup_en, 1 << offset, 0); + bank->context.wake_en = + __raw_readl(bank->base + bank->regs->wkup_en); + } + + if (bank->regs->ctrl && !BANK_USED(bank)) { + void __iomem *reg = bank->base + bank->regs->ctrl; + u32 ctrl; + + ctrl = __raw_readl(reg); + /* Module is disabled, clocks are gated */ + ctrl |= GPIO_MOD_CTRL_BIT; + __raw_writel(ctrl, reg); + bank->context.ctrl = ctrl; + } +} + static int gpio_is_input(struct gpio_bank *bank, int mask) { void __iomem *reg = bank->base + bank->regs->direction; @@ -437,9 +483,10 @@ static int gpio_irq_type(struct irq_data *d, unsigned type) unsigned gpio = 0; int retval; unsigned long flags; + unsigned offset; - if (WARN_ON(!BANK_USED(bank))) - return -EINVAL; + if (!BANK_USED(bank)) + pm_runtime_get_sync(bank->dev); #ifdef CONFIG_ARCH_OMAP1 if (d->irq > IH_MPUIO_BASE) @@ -457,7 +504,16 @@ static int gpio_irq_type(struct irq_data *d, unsigned type) return -EINVAL; spin_lock_irqsave(&bank->lock, flags); - retval = _set_gpio_triggering(bank, GPIO_INDEX(bank, gpio), type); + offset = GPIO_INDEX(bank, gpio); + retval = _set_gpio_triggering(bank, offset, type); + if (!LINE_USED(bank->mod_usage, offset)) { + _enable_gpio_module(bank, offset); + _set_gpio_direction(bank, offset, 1); + } else if (!gpio_is_input(bank, 1 << offset)) { + spin_unlock_irqrestore(&bank->lock, flags); + return -EINVAL; + } + bank->irq_usage |= 1 << GPIO_INDEX(bank, gpio); spin_unlock_irqrestore(&bank->lock, flags); @@ -620,30 +676,14 @@ static int omap_gpio_request(struct gpio_chip *chip, unsigned offset) spin_lock_irqsave(&bank->lock, flags); /* Set trigger to none. You need to enable the desired trigger with - * request_irq() or set_irq_type(). + * request_irq() or set_irq_type(). Only do this if the IRQ line has + * not already been requested. */ - _set_gpio_triggering(bank, offset, IRQ_TYPE_NONE); - - if (bank->regs->pinctrl) { - void __iomem *reg = bank->base + bank->regs->pinctrl; - - /* Claim the pin for MPU */ - __raw_writel(__raw_readl(reg) | (1 << offset), reg); + if (!LINE_USED(bank->irq_usage, offset)) { + _set_gpio_triggering(bank, offset, IRQ_TYPE_NONE); + _enable_gpio_module(bank, offset); } - - if (bank->regs->ctrl && !BANK_USED(bank)) { - void __iomem *reg = bank->base + bank->regs->ctrl; - u32 ctrl; - - ctrl = __raw_readl(reg); - /* Module is enabled, clocks are not gated */ - ctrl &= ~GPIO_MOD_CTRL_BIT; - __raw_writel(ctrl, reg); - bank->context.ctrl = ctrl; - } - bank->mod_usage |= 1 << offset; - spin_unlock_irqrestore(&bank->lock, flags); return 0; @@ -652,31 +692,11 @@ static int omap_gpio_request(struct gpio_chip *chip, unsigned offset) static void omap_gpio_free(struct gpio_chip *chip, unsigned offset) { struct gpio_bank *bank = container_of(chip, struct gpio_bank, chip); - void __iomem *base = bank->base; unsigned long flags; spin_lock_irqsave(&bank->lock, flags); - - if (bank->regs->wkup_en) { - /* Disable wake-up during idle for dynamic tick */ - _gpio_rmw(base, bank->regs->wkup_en, 1 << offset, 0); - bank->context.wake_en = - __raw_readl(bank->base + bank->regs->wkup_en); - } - bank->mod_usage &= ~(1 << offset); - - if (bank->regs->ctrl && !BANK_USED(bank)) { - void __iomem *reg = bank->base + bank->regs->ctrl; - u32 ctrl; - - ctrl = __raw_readl(reg); - /* Module is disabled, clocks are gated */ - ctrl |= GPIO_MOD_CTRL_BIT; - __raw_writel(ctrl, reg); - bank->context.ctrl = ctrl; - } - + _disable_gpio_module(bank, offset); _reset_gpio(bank, bank->chip.base + offset); spin_unlock_irqrestore(&bank->lock, flags); @@ -778,8 +798,16 @@ static void gpio_irq_shutdown(struct irq_data *d) spin_lock_irqsave(&bank->lock, flags); bank->irq_usage &= ~(1 << offset); + _disable_gpio_module(bank, offset); _reset_gpio(bank, gpio); spin_unlock_irqrestore(&bank->lock, flags); + + /* + * If this is the last IRQ to be freed in the bank, + * disable the bank module. + */ + if (!BANK_USED(bank)) + pm_runtime_put(bank->dev); } static void gpio_ack_irq(struct irq_data *d) @@ -929,13 +957,22 @@ static int gpio_output(struct gpio_chip *chip, unsigned offset, int value) { struct gpio_bank *bank; unsigned long flags; + int retval = 0; bank = container_of(chip, struct gpio_bank, chip); spin_lock_irqsave(&bank->lock, flags); + + if (LINE_USED(bank->irq_usage, offset)) { + retval = -EINVAL; + goto exit; + } + bank->set_dataout(bank, offset, value); _set_gpio_direction(bank, offset, 0); + +exit: spin_unlock_irqrestore(&bank->lock, flags); - return 0; + return retval; } static int gpio_debounce(struct gpio_chip *chip, unsigned offset, From 4fc4b274f9b3b5f18896a069e5f9f8dd8f0d450a Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Tue, 1 Oct 2013 14:31:53 +0200 Subject: [PATCH 441/523] usb: musb: dsps: do not bind to "musb-hdrc" This went unnoticed in durin the merge window: The dsps driver creates a child device for the musb core driver _and_ attaches the of_node to it so devm_usb_get_phy_by_phandle() grabs the correct phy and attaches the devm resources to the proper device. We could also use the parent device but then devm would attach the resource to the wrong device and it would be destroyed once the parent device is gone - not the device that is used by the musb core driver. If the phy is now not available then dsps_musb_init() / devm_usb_get_phy_by_phandle() returns with EPROBE_DEFER. Since the of_node is attached it tries OF drivers as well and matches the driver against DSPS. That one creates a new child device for the musb core driver which gets probed immediately. The whole thing repeats itself until the stack overflows. I belive the same problem exists in ux500 glue code (since 313bdb11 ("usb: musb: ux500: add device tree probing support") but the drivers are now probed in the right order so they don't see it. The problem is that the dsps driver gets bound to the musb-child device due to the same of_node / matching binding. I don't really agree with having yet another child node in DT to fix this. Ideally we would have musb core driver with DT bindings and according to the binding we would select the few extra hacks / gleue layer. Therefore I suggest the driver to reject the musb-core device. Cc: Lee Jones Tested-by: Tom Rini Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_dsps.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 4047cbb91bac..bd4138d80a48 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -535,6 +535,9 @@ static int dsps_probe(struct platform_device *pdev) struct dsps_glue *glue; int ret; + if (!strcmp(pdev->name, "musb-hdrc")) + return -ENODEV; + match = of_match_node(musb_dsps_of_match, pdev->dev.of_node); if (!match) { dev_err(&pdev->dev, "fail to get matching of_match struct\n"); From 8854894c040cd68b463dccf267308250b336df40 Mon Sep 17 00:00:00 2001 From: Robert Baldyga Date: Fri, 27 Sep 2013 12:28:54 +0200 Subject: [PATCH 442/523] usb: gadget: f_fs: fix error handling This patch add missing error check in ffs_func_bind() function, after ffs_do_descs() function call for high speed descriptors. Without this check it's possible that the module will try dereference incorrect pointer. [ balbi@ti.com : removed trailing empty line ] Acked-by: Michal Nazarewicz Signed-off-by: Robert Baldyga Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_fs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index 1a66c5baa0d1..0da66bacb0d4 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -2264,6 +2264,8 @@ static int ffs_func_bind(struct usb_configuration *c, data->raw_descs + ret, (sizeof data->raw_descs) - ret, __ffs_func_bind_do_descs, func); + if (unlikely(ret < 0)) + goto error; } /* From b377216bd2d313b393ddd4b04c71f700842d104b Mon Sep 17 00:00:00 2001 From: Robert Baldyga Date: Tue, 24 Sep 2013 11:24:28 +0200 Subject: [PATCH 443/523] usb: gadget: s3c-hsotg: fix can_write limit for non-periodic endpoints Value of can_write variable in s3c_hsotg_write_fifo function should be limited to 512 only for non-periodic endpoints. There was some discrepancy between comment and code, because comment suggests correct behavior, but in the code limit was applied to periodic endpoints too. So there is additional check causing the limitation concerns only non-periodic endpoints. Signed-off-by: Robert Baldyga Signed-off-by: Kyungmin Park Signed-off-by: Felipe Balbi --- drivers/usb/gadget/s3c-hsotg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index 6bddf1aa2347..a8a99e4748d5 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -543,7 +543,7 @@ static int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg, * FIFO, requests of >512 cause the endpoint to get stuck with a * fragment of the end of the transfer in it. */ - if (can_write > 512) + if (can_write > 512 && !periodic) can_write = 512; /* From 3c70b8eeda596069258772afabf2ab0b1aa017f0 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Tue, 1 Oct 2013 16:41:22 +0200 Subject: [PATCH 444/523] fuse: don't check_submounts_and_drop() in RCU walk If revalidate finds an invalid dentry in RCU walk mode, let the VFS deal with it instead of calling check_submounts_and_drop() which is not prepared for being called from RCU walk. Signed-off-by: Miklos Szeredi Cc: stable@vger.kernel.org --- fs/fuse/dir.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index 62b43b577bfc..9b16806f11da 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -259,7 +259,8 @@ out: invalid: ret = 0; - if (check_submounts_and_drop(entry) != 0) + + if (!(flags & LOOKUP_RCU) && check_submounts_and_drop(entry) != 0) ret = 1; goto out; } From 6314efee3cfeea2da12dbc05edfa20e5a42391bd Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Tue, 1 Oct 2013 16:41:22 +0200 Subject: [PATCH 445/523] fuse: readdirplus: fix RCU walk Doing dput(parent) is not valid in RCU walk mode. In RCU mode it would probably be okay to update the parent flags, but it's actually not necessary most of the time... So only set the FUSE_I_ADVISE_RDPLUS flag on the parent when the entry was recently initialized by READDIRPLUS. This is achieved by setting FUSE_I_INIT_RDPLUS on entries added by READDIRPLUS and only dropping out of RCU mode if this flag is set. FUSE_I_INIT_RDPLUS is cleared once the FUSE_I_ADVISE_RDPLUS flag is set in the parent. Reported-by: Al Viro Signed-off-by: Miklos Szeredi Cc: stable@vger.kernel.org --- fs/fuse/dir.c | 12 +++++++++--- fs/fuse/fuse_i.h | 2 ++ 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index 9b16806f11da..a75159846a75 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -182,6 +182,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags) struct inode *inode; struct dentry *parent; struct fuse_conn *fc; + struct fuse_inode *fi; int ret; inode = ACCESS_ONCE(entry->d_inode); @@ -228,7 +229,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags) if (!err && !outarg.nodeid) err = -ENOENT; if (!err) { - struct fuse_inode *fi = get_fuse_inode(inode); + fi = get_fuse_inode(inode); if (outarg.nodeid != get_node_id(inode)) { fuse_queue_forget(fc, forget, outarg.nodeid, 1); goto invalid; @@ -246,8 +247,11 @@ static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags) attr_version); fuse_change_entry_timeout(entry, &outarg); } else if (inode) { - fc = get_fuse_conn(inode); - if (fc->readdirplus_auto) { + fi = get_fuse_inode(inode); + if (flags & LOOKUP_RCU) { + if (test_bit(FUSE_I_INIT_RDPLUS, &fi->state)) + return -ECHILD; + } else if (test_and_clear_bit(FUSE_I_INIT_RDPLUS, &fi->state)) { parent = dget_parent(entry); fuse_advise_use_readdirplus(parent->d_inode); dput(parent); @@ -1292,6 +1296,8 @@ static int fuse_direntplus_link(struct file *file, } found: + if (fc->readdirplus_auto) + set_bit(FUSE_I_INIT_RDPLUS, &get_fuse_inode(inode)->state); fuse_change_entry_timeout(dentry, o); err = 0; diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 5ced199b50bb..5b9e6f3b6aef 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -115,6 +115,8 @@ struct fuse_inode { enum { /** Advise readdirplus */ FUSE_I_ADVISE_RDPLUS, + /** Initialized with readdirplus */ + FUSE_I_INIT_RDPLUS, /** An operation changing file size is in progress */ FUSE_I_SIZE_UNSTABLE, }; From 698fa1d163c560343b8012a0a916440d076b6c8a Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Tue, 1 Oct 2013 16:41:23 +0200 Subject: [PATCH 446/523] fuse: no RCU mode in fuse_access() fuse_access() is never called in RCU walk, only on the final component of access(2) and chdir(2)... Signed-off-by: Miklos Szeredi --- fs/fuse/dir.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index a75159846a75..b7989f2ab4c4 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -1068,6 +1068,8 @@ static int fuse_access(struct inode *inode, int mask) struct fuse_access_in inarg; int err; + BUG_ON(mask & MAY_NOT_BLOCK); + if (fc->no_access) return 0; @@ -1155,9 +1157,6 @@ static int fuse_permission(struct inode *inode, int mask) noticed immediately, only after the attribute timeout has expired */ } else if (mask & (MAY_ACCESS | MAY_CHDIR)) { - if (mask & MAY_NOT_BLOCK) - return -ECHILD; - err = fuse_access(inode, mask); } else if ((mask & MAY_EXEC) && S_ISREG(inode->i_mode)) { if (!(inode->i_mode & S_IXUGO)) { From 7167cf0e8cd10287b7912b9ffcccd9616f382922 Mon Sep 17 00:00:00 2001 From: Ricardo Ribalda Date: Tue, 1 Oct 2013 08:17:10 +0200 Subject: [PATCH 447/523] ll_temac: Reset dma descriptors indexes on ndo_open The dma descriptors indexes are only initialized on the probe function. If a packet is on the buffer when temac_stop is called, the dma descriptors indexes can be left on a incorrect state where no other package can be sent. So an interface could be left in an usable state after ifdow/ifup. This patch makes sure that the descriptors indexes are in a proper status when the device is open. Signed-off-by: Ricardo Ribalda Delgado Signed-off-by: David S. Miller --- drivers/net/ethernet/xilinx/ll_temac_main.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/ethernet/xilinx/ll_temac_main.c b/drivers/net/ethernet/xilinx/ll_temac_main.c index b88121f240ca..0029148077a9 100644 --- a/drivers/net/ethernet/xilinx/ll_temac_main.c +++ b/drivers/net/ethernet/xilinx/ll_temac_main.c @@ -297,6 +297,12 @@ static int temac_dma_bd_init(struct net_device *ndev) lp->rx_bd_p + (sizeof(*lp->rx_bd_v) * (RX_BD_NUM - 1))); lp->dma_out(lp, TX_CURDESC_PTR, lp->tx_bd_p); + /* Init descriptor indexes */ + lp->tx_bd_ci = 0; + lp->tx_bd_next = 0; + lp->tx_bd_tail = 0; + lp->rx_bd_ci = 0; + return 0; out: From 1ed98ed55d6bf47d5a21b1e2db35ceb8b9a4c91c Mon Sep 17 00:00:00 2001 From: Manish Chopra Date: Tue, 1 Oct 2013 02:23:48 -0400 Subject: [PATCH 448/523] qlcnic: Fix SR-IOV configuration o Interface needs to be brought down and up while configuring SR-IOV. Protect interface up/down using rtnl_lock()/rtnl_unlock() Signed-off-by: Manish Chopra Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_pf.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_pf.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_pf.c index 330d9a8774ad..686f460b1502 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_pf.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_pf.c @@ -397,6 +397,7 @@ static int qlcnic_pci_sriov_disable(struct qlcnic_adapter *adapter) { struct net_device *netdev = adapter->netdev; + rtnl_lock(); if (netif_running(netdev)) __qlcnic_down(adapter, netdev); @@ -407,12 +408,15 @@ static int qlcnic_pci_sriov_disable(struct qlcnic_adapter *adapter) /* After disabling SRIOV re-init the driver in default mode configure opmode based on op_mode of function */ - if (qlcnic_83xx_configure_opmode(adapter)) + if (qlcnic_83xx_configure_opmode(adapter)) { + rtnl_unlock(); return -EIO; + } if (netif_running(netdev)) __qlcnic_up(adapter, netdev); + rtnl_unlock(); return 0; } @@ -533,6 +537,7 @@ static int qlcnic_pci_sriov_enable(struct qlcnic_adapter *adapter, int num_vfs) return -EIO; } + rtnl_lock(); if (netif_running(netdev)) __qlcnic_down(adapter, netdev); @@ -555,6 +560,7 @@ static int qlcnic_pci_sriov_enable(struct qlcnic_adapter *adapter, int num_vfs) __qlcnic_up(adapter, netdev); error: + rtnl_unlock(); return err; } From 3e08f4a72f689c6296d336c2aab4bddd60c93ae2 Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 1 Oct 2013 11:33:59 +0200 Subject: [PATCH 449/523] ip_tunnel: Fix a memory corruption in ip_tunnel_xmit We might extend the used aera of a skb beyond the total headroom when we install the ipip header. Fix this by calling skb_cow_head() unconditionally. Bug was introduced with commit c544193214 ("GRE: Refactor GRE tunneling code.") Cc: Pravin Shelar Signed-off-by: Steffen Klassert Signed-off-by: David S. Miller --- net/ipv4/ip_tunnel.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index d3fbad422e0e..dfc6d8a3caa7 100644 --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -642,13 +642,13 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev, max_headroom = LL_RESERVED_SPACE(rt->dst.dev) + sizeof(struct iphdr) + rt->dst.header_len; - if (max_headroom > dev->needed_headroom) { + if (max_headroom > dev->needed_headroom) dev->needed_headroom = max_headroom; - if (skb_cow_head(skb, dev->needed_headroom)) { - dev->stats.tx_dropped++; - dev_kfree_skb(skb); - return; - } + + if (skb_cow_head(skb, dev->needed_headroom)) { + dev->stats.tx_dropped++; + dev_kfree_skb(skb); + return; } err = iptunnel_xmit(rt, skb, fl4.saddr, fl4.daddr, protocol, From 67013282627185aeec2fb92c75868dcace0d25b4 Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 1 Oct 2013 11:34:48 +0200 Subject: [PATCH 450/523] ip_tunnel: Add fallback tunnels to the hash lists Currently we can not update the tunnel parameters of the fallback tunnels because we don't find them in the hash lists. Fix this by adding them on initialization. Bug was introduced with commit c544193214 ("GRE: Refactor GRE tunneling code.") Cc: Pravin Shelar Signed-off-by: Steffen Klassert Signed-off-by: David S. Miller --- net/ipv4/ip_tunnel.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index dfc6d8a3caa7..895a3535321b 100644 --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -853,8 +853,10 @@ int ip_tunnel_init_net(struct net *net, int ip_tnl_net_id, /* FB netdevice is special: we have one, and only one per netns. * Allowing to move it to another netns is clearly unsafe. */ - if (!IS_ERR(itn->fb_tunnel_dev)) + if (!IS_ERR(itn->fb_tunnel_dev)) { itn->fb_tunnel_dev->features |= NETIF_F_NETNS_LOCAL; + ip_tunnel_add(itn, netdev_priv(itn->fb_tunnel_dev)); + } rtnl_unlock(); return PTR_RET(itn->fb_tunnel_dev); From 78a3694d44a029242dd0830b34ab20ef1704be35 Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 1 Oct 2013 11:35:51 +0200 Subject: [PATCH 451/523] ip_tunnel_core: Change __skb_push back to skb_push Git commit 0e6fbc5b ("ip_tunnels: extend iptunnel_xmit()") moved the IP header installation to iptunnel_xmit() and changed skb_push() to __skb_push(). This makes possible bugs hard to track down, so change it back to skb_push(). Cc: Pravin Shelar Signed-off-by: Steffen Klassert Signed-off-by: David S. Miller --- net/ipv4/ip_tunnel_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c index d6c856b17fd4..c31e3ad98ef2 100644 --- a/net/ipv4/ip_tunnel_core.c +++ b/net/ipv4/ip_tunnel_core.c @@ -61,7 +61,7 @@ int iptunnel_xmit(struct rtable *rt, struct sk_buff *skb, memset(IPCB(skb), 0, sizeof(*IPCB(skb))); /* Push down and install the IP header. */ - __skb_push(skb, sizeof(struct iphdr)); + skb_push(skb, sizeof(struct iphdr)); skb_reset_network_header(skb); iph = ip_hdr(skb); From cfe4a536927c3186b7e7f9be688e7e0f62bb8ea1 Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 1 Oct 2013 11:37:37 +0200 Subject: [PATCH 452/523] ip_tunnel: Remove double unregister of the fallback device When queueing the netdevices for removal, we queue the fallback device twice in ip_tunnel_destroy(). The first time when we queue all netdevices in the namespace and then again explicitly. Fix this by removing the explicit queueing of the fallback device. Bug was introduced when network namespace support was added with commit 6c742e714d8 ("ipip: add x-netns support"). Cc: Nicolas Dichtel Signed-off-by: Steffen Klassert Acked-by: Nicolas Dichtel Signed-off-by: David S. Miller --- net/ipv4/ip_tunnel.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index 895a3535321b..63a6d6d6b875 100644 --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -886,8 +886,6 @@ static void ip_tunnel_destroy(struct ip_tunnel_net *itn, struct list_head *head, if (!net_eq(dev_net(t->dev), net)) unregister_netdevice_queue(t->dev, head); } - if (itn->fb_tunnel_dev) - unregister_netdevice_queue(itn->fb_tunnel_dev, head); } void ip_tunnel_delete_net(struct ip_tunnel_net *itn, struct rtnl_link_ops *ops) From 205983c43700ac3a81e7625273a3fa83cd2759b5 Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Tue, 1 Oct 2013 18:04:59 +0200 Subject: [PATCH 453/523] sit: allow to use rtnl ops on fb tunnel rtnl ops where introduced by ba3e3f50a0e5 ("sit: advertise tunnel param via rtnl"), but I forget to assign rtnl ops to fb tunnels. Now that it is done, we must remove the explicit call to unregister_netdevice_queue(), because the fallback tunnel is added to the queue in sit_destroy_tunnels() when checking rtnl_link_ops of all netdevices (this is valid since commit 5e6700b3bf98 ("sit: add support of x-netns")). Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller --- net/ipv6/sit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index afd5605aea7c..19269453a8ea 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -1666,6 +1666,7 @@ static int __net_init sit_init_net(struct net *net) goto err_alloc_dev; } dev_net_set(sitn->fb_tunnel_dev, net); + sitn->fb_tunnel_dev->rtnl_link_ops = &sit_link_ops; /* FB netdevice is special: we have one, and only one per netns. * Allowing to move it to another netns is clearly unsafe. */ @@ -1700,7 +1701,6 @@ static void __net_exit sit_exit_net(struct net *net) rtnl_lock(); sit_destroy_tunnels(sitn, &list); - unregister_netdevice_queue(sitn->fb_tunnel_dev, &list); unregister_netdevice_many(&list); rtnl_unlock(); } From bb8140947a247b9aa15652cc24dc555ebb0b64b0 Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Tue, 1 Oct 2013 18:05:00 +0200 Subject: [PATCH 454/523] ip6tnl: allow to use rtnl ops on fb tunnel rtnl ops where introduced by c075b13098b3 ("ip6tnl: advertise tunnel param via rtnl"), but I forget to assign rtnl ops to fb tunnels. Now that it is done, we must remove the explicit call to unregister_netdevice_queue(), because the fallback tunnel is added to the queue in ip6_tnl_destroy_tunnels() when checking rtnl_link_ops of all netdevices (this is valid since commit 0bd8762824e7 ("ip6tnl: add x-netns support")). Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller --- net/ipv6/ip6_tunnel.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index 2d8f4829575b..a791552e0422 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -1731,8 +1731,6 @@ static void __net_exit ip6_tnl_destroy_tunnels(struct ip6_tnl_net *ip6n) } } - t = rtnl_dereference(ip6n->tnls_wc[0]); - unregister_netdevice_queue(t->dev, &list); unregister_netdevice_many(&list); } @@ -1752,6 +1750,7 @@ static int __net_init ip6_tnl_init_net(struct net *net) if (!ip6n->fb_tnl_dev) goto err_alloc_dev; dev_net_set(ip6n->fb_tnl_dev, net); + ip6n->fb_tnl_dev->rtnl_link_ops = &ip6_link_ops; /* FB netdevice is special: we have one, and only one per netns. * Allowing to move it to another netns is clearly unsafe. */ From 0eab5eb7a3a9a6ccfcdecbffff00d60a86a004bb Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 1 Oct 2013 09:10:16 -0700 Subject: [PATCH 455/523] pkt_sched: fq: rate limiting improvements FQ rate limiting suffers from two problems, reported by Steinar : 1) FQ enforces a delay when flow quantum is exhausted in order to reduce cpu overhead. But if packets are small, current delay computation is slightly wrong, and observed rates can be too high. Steinar had this problem because he disabled TSO and GSO, and default FQ quantum is 2*1514. (Of course, I wish recent TSO auto sizing changes will help to not having to disable TSO in the first place) 2) maxrate was not used for forwarded flows (skbs not attached to a socket) Tested: tc qdisc add dev eth0 root est 1sec 4sec fq maxrate 8Mbit netperf -H lpq84 -l 1000 & sleep 10 ; tc -s qdisc show dev eth0 qdisc fq 8003: root refcnt 32 limit 10000p flow_limit 100p buckets 1024 quantum 3028 initial_quantum 15140 maxrate 8000Kbit Sent 16819357 bytes 11258 pkt (dropped 0, overlimits 0 requeues 0) rate 7831Kbit 653pps backlog 7570b 5p requeues 0 44 flows (43 inactive, 1 throttled), next packet delay 2977352 ns 0 gc, 0 highprio, 5545 throttled lpq83:~# tcpdump -p -i eth0 host lpq84 -c 12 09:02:52.079484 IP lpq83 > lpq84: . 1389536928:1389538376(1448) ack 3808678021 win 457 09:02:52.079499 IP lpq83 > lpq84: . 1448:2896(1448) ack 1 win 457 09:02:52.079906 IP lpq84 > lpq83: . ack 2896 win 16384 09:02:52.082568 IP lpq83 > lpq84: . 2896:4344(1448) ack 1 win 457 09:02:52.082581 IP lpq83 > lpq84: . 4344:5792(1448) ack 1 win 457 09:02:52.083017 IP lpq84 > lpq83: . ack 5792 win 16384 09:02:52.085678 IP lpq83 > lpq84: . 5792:7240(1448) ack 1 win 457 09:02:52.085693 IP lpq83 > lpq84: . 7240:8688(1448) ack 1 win 457 09:02:52.086117 IP lpq84 > lpq83: . ack 8688 win 16384 09:02:52.088792 IP lpq83 > lpq84: . 8688:10136(1448) ack 1 win 457 09:02:52.088806 IP lpq83 > lpq84: . 10136:11584(1448) ack 1 win 457 09:02:52.089217 IP lpq84 > lpq83: . ack 11584 win 16384 Reported-by: Steinar H. Gunderson Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/sched/sch_fq.c | 43 +++++++++++++++++++++++++------------------ 1 file changed, 25 insertions(+), 18 deletions(-) diff --git a/net/sched/sch_fq.c b/net/sched/sch_fq.c index fc6de56a331e..a2fef8b10b96 100644 --- a/net/sched/sch_fq.c +++ b/net/sched/sch_fq.c @@ -420,6 +420,7 @@ static struct sk_buff *fq_dequeue(struct Qdisc *sch) struct fq_flow_head *head; struct sk_buff *skb; struct fq_flow *f; + u32 rate; skb = fq_dequeue_head(sch, &q->internal); if (skb) @@ -468,28 +469,34 @@ begin: f->time_next_packet = now; f->credit -= qdisc_pkt_len(skb); - if (f->credit <= 0 && - q->rate_enable && - skb->sk && skb->sk->sk_state != TCP_TIME_WAIT) { - u32 rate = skb->sk->sk_pacing_rate ?: q->flow_default_rate; + if (f->credit > 0 || !q->rate_enable) + goto out; + + if (skb->sk && skb->sk->sk_state != TCP_TIME_WAIT) { + rate = skb->sk->sk_pacing_rate ?: q->flow_default_rate; rate = min(rate, q->flow_max_rate); - if (rate) { - u64 len = (u64)qdisc_pkt_len(skb) * NSEC_PER_SEC; + } else { + rate = q->flow_max_rate; + if (rate == ~0U) + goto out; + } + if (rate) { + u32 plen = max(qdisc_pkt_len(skb), q->quantum); + u64 len = (u64)plen * NSEC_PER_SEC; - do_div(len, rate); - /* Since socket rate can change later, - * clamp the delay to 125 ms. - * TODO: maybe segment the too big skb, as in commit - * e43ac79a4bc ("sch_tbf: segment too big GSO packets") - */ - if (unlikely(len > 125 * NSEC_PER_MSEC)) { - len = 125 * NSEC_PER_MSEC; - q->stat_pkts_too_long++; - } - - f->time_next_packet = now + len; + do_div(len, rate); + /* Since socket rate can change later, + * clamp the delay to 125 ms. + * TODO: maybe segment the too big skb, as in commit + * e43ac79a4bc ("sch_tbf: segment too big GSO packets") + */ + if (unlikely(len > 125 * NSEC_PER_MSEC)) { + len = 125 * NSEC_PER_MSEC; + q->stat_pkts_too_long++; } + + f->time_next_packet = now + len; } out: qdisc_bstats_update(sch, skb); From 8553bcad3eca6cdd19c4771c378bd2cf6e25c6b2 Mon Sep 17 00:00:00 2001 From: Jason Gunthorpe Date: Tue, 17 Sep 2013 14:11:04 -0600 Subject: [PATCH 456/523] bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties If the property was not specified then the returned resource had a resource_size(..) == 1, rather than 0. The PCI-E driver checks for 0 so it blindly continues on with a corrupted resource. The regression was introduced into v3.12 by: 11be654 PCI: mvebu: Adapt to the new device tree layout Signed-off-by: Jason Gunthorpe Signed-off-by: Jason Cooper --- drivers/bus/mvebu-mbus.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c index 553185318963..2394e9753ef5 100644 --- a/drivers/bus/mvebu-mbus.c +++ b/drivers/bus/mvebu-mbus.c @@ -865,11 +865,13 @@ static void __init mvebu_mbus_get_pcie_resources(struct device_node *np, int ret; /* - * These are optional, so we clear them and they'll - * be zero if they are missing from the DT. + * These are optional, so we make sure that resource_size(x) will + * return 0. */ memset(mem, 0, sizeof(struct resource)); + mem->end = -1; memset(io, 0, sizeof(struct resource)); + io->end = -1; ret = of_property_read_u32_array(np, "pcie-mem-aperture", reg, ARRAY_SIZE(reg)); if (!ret) { From c2d22ecd3cf3c49aeecdc10ffd7af10ec1f7eab6 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 1 Oct 2013 13:11:21 -0400 Subject: [PATCH 457/523] fs/super.c: fix lru_list leak for real Freeing ->s_{inode,dentry}_lru in deactivate_locked_super() is wrong; the right place is destroy_super(). As it is, we leak them if sget() decides that new superblock it has allocated (and never shown to anybody) isn't needed and should be freed. Signed-off-by: Al Viro --- fs/super.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/super.c b/fs/super.c index 3a96c9783a8b..0225c20f8770 100644 --- a/fs/super.c +++ b/fs/super.c @@ -264,6 +264,8 @@ out_free_sb: */ static inline void destroy_super(struct super_block *s) { + list_lru_destroy(&s->s_dentry_lru); + list_lru_destroy(&s->s_inode_lru); #ifdef CONFIG_SMP free_percpu(s->s_files); #endif @@ -323,8 +325,6 @@ void deactivate_locked_super(struct super_block *s) /* caches are now gone, we can safely kill the shrinker now */ unregister_shrinker(&s->s_shrink); - list_lru_destroy(&s->s_dentry_lru); - list_lru_destroy(&s->s_inode_lru); put_filesystem(fs); put_super(s); From 1ccf7a1cdafadd02e33e8f3d74370685a0600ec6 Mon Sep 17 00:00:00 2001 From: Srinivas Pandruvada Date: Tue, 1 Oct 2013 10:28:41 -0700 Subject: [PATCH 458/523] intel_pstate: fix no_turbo When sysfs for no_turbo is set, then also some p states in turbo regions are observed. This patch will set IDA Engage bit when no_turbo is set to explicitly disengage turbo. Signed-off-by: Srinivas Pandruvada Acked-by: Dirk Brandewie Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/intel_pstate.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 9733f29ed148..32b3479a2405 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -394,7 +394,10 @@ static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate) trace_cpu_frequency(pstate * 100000, cpu->cpu); cpu->pstate.current_pstate = pstate; - wrmsrl(MSR_IA32_PERF_CTL, pstate << 8); + if (limits.no_turbo) + wrmsrl(MSR_IA32_PERF_CTL, BIT(32) | (pstate << 8)); + else + wrmsrl(MSR_IA32_PERF_CTL, pstate << 8); } From 6585925b62fa4dd2f4aecf634b0f8956577aa981 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 1 Oct 2013 23:02:43 +0200 Subject: [PATCH 459/523] ACPI: Use EXPORT_SYMBOL() for acpi_bus_get_device() Commit caf5c03f (ACPI: Move acpi_bus_get_device() from bus.c to scan.c) caused acpi_bus_get_device() to be exported using EXPORT_SYMBOL_GPL(), but that broke some binary drivers in existence, so revert that change. Reported-by: Peter Hurley Signed-off-by: Rafael J. Wysocki --- drivers/acpi/scan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 611ce9061dc5..407ad13cac2f 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -968,7 +968,7 @@ int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device) } return 0; } -EXPORT_SYMBOL_GPL(acpi_bus_get_device); +EXPORT_SYMBOL(acpi_bus_get_device); int acpi_device_add(struct acpi_device *device, void (*release)(struct device *)) From 3e9e01de5ed3fb2810215e2a3b479e7585785ac0 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Wed, 18 Sep 2013 12:33:42 -0700 Subject: [PATCH 460/523] target: Fix xop->dbl assignment in target_xcopy_parse_segdesc_02 This patch fixes up an incorrect assignment for xop->dbl within target_xcopy_parse_segdesc_02() code, as reported by Coverity here: http://marc.info/?l=linux-kernel&m=137936416618490&w=2 Reported-by: Dave Jones Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_xcopy.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c index 4d22e7d2adca..3da4fd10b9f8 100644 --- a/drivers/target/target_core_xcopy.c +++ b/drivers/target/target_core_xcopy.c @@ -298,8 +298,8 @@ static int target_xcopy_parse_segdesc_02(struct se_cmd *se_cmd, struct xcopy_op (unsigned long long)xop->dst_lba); if (dc != 0) { - xop->dbl = (desc[29] << 16) & 0xff; - xop->dbl |= (desc[30] << 8) & 0xff; + xop->dbl = (desc[29] & 0xff) << 16; + xop->dbl |= (desc[30] & 0xff) << 8; xop->dbl |= desc[31] & 0xff; pr_debug("XCOPY seg desc 0x02: DC=1 w/ dbl: %u\n", xop->dbl); From 0b41d6ca616ddeb3b6c0a80e8770b6f53cd42806 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Wed, 18 Sep 2013 12:48:27 -0700 Subject: [PATCH 461/523] ib_srpt: Destroy cm_id before destroying QP. This patch fixes a bug where ib_destroy_cm_id() was incorrectly being called after srpt_destroy_ch_ib() had destroyed the active QP. This would result in the following failed SRP_LOGIN_REQ messages: Received SRP_LOGIN_REQ with i_port_id 0x0:0x2590ffff1762bd, t_port_id 0x2c903009f8f40:0x2c903009f8f40 and it_iu_len 260 on port 1 (guid=0xfe80000000000000:0x2c903009f8f41) Received SRP_LOGIN_REQ with i_port_id 0x0:0x2590ffff1758f9, t_port_id 0x2c903009f8f40:0x2c903009f8f40 and it_iu_len 260 on port 2 (guid=0xfe80000000000000:0x2c903009f8f42) Received SRP_LOGIN_REQ with i_port_id 0x0:0x2590ffff175941, t_port_id 0x2c903009f8f40:0x2c903009f8f40 and it_iu_len 260 on port 2 (guid=0xfe80000000000000:0x2c90300a3cfb2) Received SRP_LOGIN_REQ with i_port_id 0x0:0x2590ffff176299, t_port_id 0x2c903009f8f40:0x2c903009f8f40 and it_iu_len 260 on port 1 (guid=0xfe80000000000000:0x2c90300a3cfb1) mlx4_core 0000:84:00.0: command 0x19 failed: fw status = 0x9 rejected SRP_LOGIN_REQ because creating a new RDMA channel failed. Received SRP_LOGIN_REQ with i_port_id 0x0:0x2590ffff176299, t_port_id 0x2c903009f8f40:0x2c903009f8f40 and it_iu_len 260 on port 1 (guid=0xfe80000000000000:0x2c90300a3cfb1) mlx4_core 0000:84:00.0: command 0x19 failed: fw status = 0x9 rejected SRP_LOGIN_REQ because creating a new RDMA channel failed. Received SRP_LOGIN_REQ with i_port_id 0x0:0x2590ffff176299, t_port_id 0x2c903009f8f40:0x2c903009f8f40 and it_iu_len 260 on port 1 (guid=0xfe80000000000000:0x2c90300a3cfb1) Reported-by: Navin Ahuja Cc: stable@vger.kernel.org # 3.3+ Signed-off-by: Nicholas Bellinger --- drivers/infiniband/ulp/srpt/ib_srpt.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c index 653ac6bfc57a..9ea7727a2825 100644 --- a/drivers/infiniband/ulp/srpt/ib_srpt.c +++ b/drivers/infiniband/ulp/srpt/ib_srpt.c @@ -2358,6 +2358,8 @@ static void srpt_release_channel_work(struct work_struct *w) transport_deregister_session(se_sess); ch->sess = NULL; + ib_destroy_cm_id(ch->cm_id); + srpt_destroy_ch_ib(ch); srpt_free_ioctx_ring((struct srpt_ioctx **)ch->ioctx_ring, @@ -2368,8 +2370,6 @@ static void srpt_release_channel_work(struct work_struct *w) list_del(&ch->list); spin_unlock_irq(&sdev->spinlock); - ib_destroy_cm_id(ch->cm_id); - if (ch->release_done) complete(ch->release_done); From 4a47d3a1ff10e564bf04f27ac14552df64f60cdf Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Mon, 23 Sep 2013 11:42:28 -0700 Subject: [PATCH 462/523] vhost/scsi: Use GFP_ATOMIC with percpu_ida_alloc for obtaining tag Fix GFP_KERNEL -> GFP_ATOMIC usage of percpu_ida_alloc() within vhost_scsi_get_tag(), as this code is expected to be called directly from interrupt context. v2 changes: - Handle possible tag < 0 failure with GFP_ATOMIC Acked-by: Michael S. Tsirkin Acked-by: Asias He Cc: Kent Overstreet Signed-off-by: Nicholas Bellinger --- drivers/vhost/scsi.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c index 592b31698fc8..ce5221fa393a 100644 --- a/drivers/vhost/scsi.c +++ b/drivers/vhost/scsi.c @@ -728,7 +728,12 @@ vhost_scsi_get_tag(struct vhost_virtqueue *vq, } se_sess = tv_nexus->tvn_se_sess; - tag = percpu_ida_alloc(&se_sess->sess_tag_pool, GFP_KERNEL); + tag = percpu_ida_alloc(&se_sess->sess_tag_pool, GFP_ATOMIC); + if (tag < 0) { + pr_err("Unable to obtain tag for tcm_vhost_cmd\n"); + return ERR_PTR(-ENOMEM); + } + cmd = &((struct tcm_vhost_cmd *)se_sess->sess_cmd_map)[tag]; sg = cmd->tvc_sgl; pages = cmd->tvc_upages; From 8c7f6e9b3321f5ede7f33974cad06db224661a42 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Mon, 23 Sep 2013 11:57:38 -0700 Subject: [PATCH 463/523] target: Fall back to vzalloc upon ->sess_cmd_map kzalloc failure This patch changes transport_alloc_session_tags() to fall back to use vzalloc when kzalloc fails for big tag_num that end up generating larger order allocations. Also use is_vmalloc_addr() in transport_alloc_session_tags() failure path, and normal transport_free_session() path to determine when vfree() needs to be called instead of kfree(). v2 changes: - Use __GFP_NOWARN | __GFP_REPEAT for sess_cmd_map kzalloc (mst) Cc: Michael S. Tsirkin Cc: Asias He Cc: Kent Overstreet Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_transport.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 84747cc1aac0..81e945eefbbd 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -236,17 +236,24 @@ int transport_alloc_session_tags(struct se_session *se_sess, { int rc; - se_sess->sess_cmd_map = kzalloc(tag_num * tag_size, GFP_KERNEL); + se_sess->sess_cmd_map = kzalloc(tag_num * tag_size, + GFP_KERNEL | __GFP_NOWARN | __GFP_REPEAT); if (!se_sess->sess_cmd_map) { - pr_err("Unable to allocate se_sess->sess_cmd_map\n"); - return -ENOMEM; + se_sess->sess_cmd_map = vzalloc(tag_num * tag_size); + if (!se_sess->sess_cmd_map) { + pr_err("Unable to allocate se_sess->sess_cmd_map\n"); + return -ENOMEM; + } } rc = percpu_ida_init(&se_sess->sess_tag_pool, tag_num); if (rc < 0) { pr_err("Unable to init se_sess->sess_tag_pool," " tag_num: %u\n", tag_num); - kfree(se_sess->sess_cmd_map); + if (is_vmalloc_addr(se_sess->sess_cmd_map)) + vfree(se_sess->sess_cmd_map); + else + kfree(se_sess->sess_cmd_map); se_sess->sess_cmd_map = NULL; return -ENOMEM; } @@ -412,7 +419,10 @@ void transport_free_session(struct se_session *se_sess) { if (se_sess->sess_cmd_map) { percpu_ida_destroy(&se_sess->sess_tag_pool); - kfree(se_sess->sess_cmd_map); + if (is_vmalloc_addr(se_sess->sess_cmd_map)) + vfree(se_sess->sess_cmd_map); + else + kfree(se_sess->sess_cmd_map); } kmem_cache_free(se_sess_cache, se_sess); } From e33a29a5ae711162c6b6fefc0a2ef18f4a4254bf Mon Sep 17 00:00:00 2001 From: Tom Gundersen Date: Tue, 1 Oct 2013 18:18:40 +0200 Subject: [PATCH 464/523] x86/simplefb: Fix overflow causing bogus fall-back On my MacBook Air lfb_size is 4M, which makes the bitshit overflow (to 256GB - larger than 32 bits), meaning we fall back to efifb unnecessarily. Cast to u64 to avoid the overflow. Signed-off-by: Tom Gundersen Reviewed-by: David Herrmann Cc: Geert Uytterhoeven Cc: Stephen Warren Cc: Stephen Warren Link: http://lkml.kernel.org/r/1380644320-1026-1-git-send-email-teg@jklm.no Signed-off-by: Ingo Molnar --- arch/x86/kernel/sysfb_simplefb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/sysfb_simplefb.c b/arch/x86/kernel/sysfb_simplefb.c index 22513e96b012..4ebd636b04b8 100644 --- a/arch/x86/kernel/sysfb_simplefb.c +++ b/arch/x86/kernel/sysfb_simplefb.c @@ -72,7 +72,7 @@ __init int create_simplefb(const struct screen_info *si, * the part that is occupied by the framebuffer */ len = mode->height * mode->stride; len = PAGE_ALIGN(len); - if (len > si->lfb_size << 16) { + if (len > (u64)si->lfb_size << 16) { printk(KERN_WARNING "sysfb: VRAM smaller than advertised\n"); return -EINVAL; } From 5596b0b245fb9d2cefb5023b11061050351c1398 Mon Sep 17 00:00:00 2001 From: Yoichi Yuasa Date: Wed, 2 Oct 2013 15:03:03 +0900 Subject: [PATCH 465/523] MIPS: Fix forgotten preempt_enable() when CPU has inclusive pcaches [ 1.904000] BUG: scheduling while atomic: swapper/1/0x00000002 [ 1.908000] Modules linked in: [ 1.916000] CPU: 0 PID: 1 Comm: swapper Not tainted 3.12.0-rc2-lemote-los.git-5318619-dirty #1 [ 1.920000] Stack : 0000000031aac000 ffffffff810d0000 0000000000000052 ffffffff802730a4 0000000000000000 0000000000000001 ffffffff810cdf90 ffffffff810d0000 ffffffff8068b968 ffffffff806f5537 ffffffff810cdf90 980000009f0782e8 0000000000000001 ffffffff80720000 ffffffff806b0000 980000009f078000 980000009f290000 ffffffff805f312c 980000009f05b5d8 ffffffff80233518 980000009f05b5e8 ffffffff80274b7c 980000009f078000 ffffffff8068b968 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 980000009f05b520 0000000000000000 ffffffff805f2f6c 0000000000000000 ffffffff80700000 ffffffff80700000 ffffffff806fc758 ffffffff80700000 ffffffff8020be98 ffffffff806fceb0 ffffffff805f2f6c ... [ 2.028000] Call Trace: [ 2.032000] [] show_stack+0x80/0x98 [ 2.036000] [] __schedule_bug+0x44/0x6c [ 2.040000] [] __schedule+0x518/0x5b0 [ 2.044000] [] schedule_timeout+0x128/0x1f0 [ 2.048000] [] msleep+0x3c/0x60 [ 2.052000] [] do_probe+0x238/0x3a8 [ 2.056000] [] ide_probe_port+0x340/0x7e8 [ 2.060000] [] ide_host_register+0x2d0/0x7a8 [ 2.064000] [] ide_pci_init_two+0x4e4/0x790 [ 2.068000] [] amd74xx_probe+0x148/0x2c8 [ 2.072000] [] pci_device_probe+0xc4/0x130 [ 2.076000] [] driver_probe_device+0x98/0x270 [ 2.080000] [] __driver_attach+0xe0/0xe8 [ 2.084000] [] bus_for_each_dev+0x78/0xe0 [ 2.088000] [] bus_add_driver+0x230/0x310 [ 2.092000] [] driver_register+0x84/0x158 [ 2.096000] [] do_one_initcall+0x104/0x160 Signed-off-by: Yoichi Yuasa Reported-by: Aaro Koskinen Tested-by: Aaro Koskinen Cc: linux-mips@linux-mips.org Cc: Linux Kernel Mailing List Patchwork: https://patchwork.linux-mips.org/patch/5941/ Signed-off-by: Ralf Baechle --- arch/mips/mm/c-r4k.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c index 627883bc6d5f..bc6f96fcb529 100644 --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -609,6 +609,7 @@ static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size) r4k_blast_scache(); else blast_scache_range(addr, addr + size); + preempt_enable(); __sync(); return; } @@ -650,6 +651,7 @@ static void r4k_dma_cache_inv(unsigned long addr, unsigned long size) */ blast_inv_scache_range(addr, addr + size); } + preempt_enable(); __sync(); return; } From 09d3ce74d7d60f37d1b030886ec659bbfe2e73bf Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Tue, 1 Oct 2013 21:48:43 +0100 Subject: [PATCH 466/523] arm64: Remove duplicate DEBUG_STACK_USAGE config This config item already exists generically in lib/Kconfig.debug. Remove the duplicate config in arm64. Signed-off-by: Stephen Boyd Signed-off-by: Catalin Marinas --- arch/arm64/Kconfig.debug | 7 ------- 1 file changed, 7 deletions(-) diff --git a/arch/arm64/Kconfig.debug b/arch/arm64/Kconfig.debug index 1a6bfe954d49..835c559786bd 100644 --- a/arch/arm64/Kconfig.debug +++ b/arch/arm64/Kconfig.debug @@ -6,13 +6,6 @@ config FRAME_POINTER bool default y -config DEBUG_STACK_USAGE - bool "Enable stack utilization instrumentation" - depends on DEBUG_KERNEL - help - Enables the display of the minimum amount of free stack which each - task has ever had available in the sysrq-T output. - config EARLY_PRINTK bool "Early printk support" default y From 20928bd3f08afb036c096d9559d581926b895918 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 1 Oct 2013 22:13:34 -0700 Subject: [PATCH 467/523] sparc: fix ldom_reboot buffer overflow harder The length argument to strlcpy was still wrong. It could overflow the end of full_boot_str by 5 bytes. Instead of strcat and strlcpy, just use snprint. Reported-by: Brad Spengler Signed-off-by: Kees Cook Signed-off-by: David S. Miller --- arch/sparc/kernel/ds.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/sparc/kernel/ds.c b/arch/sparc/kernel/ds.c index 4d9ac8406f32..dff60abbea01 100644 --- a/arch/sparc/kernel/ds.c +++ b/arch/sparc/kernel/ds.c @@ -849,9 +849,8 @@ void ldom_reboot(const char *boot_command) if (boot_command && strlen(boot_command)) { unsigned long len; - strcpy(full_boot_str, "boot "); - strlcpy(full_boot_str + strlen("boot "), boot_command, - sizeof(full_boot_str)); + snprintf(full_boot_str, sizeof(full_boot_str), "boot %s", + boot_command); len = strlen(full_boot_str); if (reboot_data_supported) { From 26794942461f438a6bc725ec7294b08a6bd782c4 Mon Sep 17 00:00:00 2001 From: David Miller Date: Wed, 2 Oct 2013 14:25:09 -0400 Subject: [PATCH 468/523] mm: Fix generic hugetlb pte check return type. The include/asm-generic/hugetlb.h stubs that just vector huge_pte_*() calls to the pte_*() implementations won't work in certain situations. x86 and sparc, for example, return "unsigned long" from the bit checks, and just go "return pte_val(pte) & PTE_BIT_FOO;" But since huge_pte_*() returns 'int', if any high bits on 64-bit are relevant, they get chopped off. The net effect is that we can loop forever trying to COW a huge page, because the huge_pte_write() check signals false all the time. Reported-by: Gurudas Pai Tested-by: Gurudas Pai Signed-off-by: David S. Miller Acked-by: David Rientjes --- include/asm-generic/hugetlb.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h index d06079c774a0..99b490b4d05a 100644 --- a/include/asm-generic/hugetlb.h +++ b/include/asm-generic/hugetlb.h @@ -6,12 +6,12 @@ static inline pte_t mk_huge_pte(struct page *page, pgprot_t pgprot) return mk_pte(page, pgprot); } -static inline int huge_pte_write(pte_t pte) +static inline unsigned long huge_pte_write(pte_t pte) { return pte_write(pte); } -static inline int huge_pte_dirty(pte_t pte) +static inline unsigned long huge_pte_dirty(pte_t pte) { return pte_dirty(pte); } From d2f09b1c17158fa870fb4f78babf1b307cd2685b Mon Sep 17 00:00:00 2001 From: Michael Opdenacker Date: Sat, 7 Sep 2013 09:38:09 +0200 Subject: [PATCH 469/523] sparc: remove deprecated IRQF_DISABLED This patch proposes to remove the IRQF_DISABLED flag from sparc architecture code. It's a NOOP since 2.6.35 and it will be removed one day. Signed-off-by: Michael Opdenacker Signed-off-by: David S. Miller --- arch/sparc/include/asm/floppy_64.h | 2 +- arch/sparc/kernel/ldc.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/sparc/include/asm/floppy_64.h b/arch/sparc/include/asm/floppy_64.h index e204f902e6c9..7c90c50c200d 100644 --- a/arch/sparc/include/asm/floppy_64.h +++ b/arch/sparc/include/asm/floppy_64.h @@ -254,7 +254,7 @@ static int sun_fd_request_irq(void) once = 1; error = request_irq(FLOPPY_IRQ, sparc_floppy_irq, - IRQF_DISABLED, "floppy", NULL); + 0, "floppy", NULL); return ((error == 0) ? 0 : -1); } diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c index 54df554b82d9..e01d75d40329 100644 --- a/arch/sparc/kernel/ldc.c +++ b/arch/sparc/kernel/ldc.c @@ -1249,12 +1249,12 @@ int ldc_bind(struct ldc_channel *lp, const char *name) snprintf(lp->rx_irq_name, LDC_IRQ_NAME_MAX, "%s RX", name); snprintf(lp->tx_irq_name, LDC_IRQ_NAME_MAX, "%s TX", name); - err = request_irq(lp->cfg.rx_irq, ldc_rx, IRQF_DISABLED, + err = request_irq(lp->cfg.rx_irq, ldc_rx, 0, lp->rx_irq_name, lp); if (err) return err; - err = request_irq(lp->cfg.tx_irq, ldc_tx, IRQF_DISABLED, + err = request_irq(lp->cfg.tx_irq, ldc_tx, 0, lp->tx_irq_name, lp); if (err) { free_irq(lp->cfg.rx_irq, lp); From a988fb806d72d4e3a0edbeaece3f2f1172ce44b8 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Wed, 11 Sep 2013 12:32:05 +0200 Subject: [PATCH 470/523] sparc: fix MSI build failure on Sparc32 Commit ebd97be635 ('PCI: remove ARCH_SUPPORTS_MSI kconfig option') removes the ARCH_SUPPORTS_MSI Kconfig option that allowed architectures to indicate whether they support PCI MSI or not. Now, PCI MSI support can be compiled in on any architecture thanks to the use of weak functions thanks to 4287d824f265 ('PCI: use weak functions for MSI arch-specific functions'). So, architecture specific code is now responsible to ensure that its PCI MSI code builds in all cases, or be appropriately conditionally compiled. On Sparc, the MSI support is only provided for Sparc64, so the ARCH_SUPPORTS_MSI kconfig option was only selected for SPARC64, and not for the Sparc architecture as a whole. Therefore, removing ARCH_SUPPORTS_MSI broke Sparc32 configurations with CONFIG_PCI_MSI=y, because the Sparc-specific MSI code is not designed to be built on Sparc32. To solve this, this commit ensures that the Sparc MSI code is only built on Sparc64. This is done thanks to a new Kconfig Makefile helper option SPARC64_PCI_MSI, modeled after the existing SPARC64_PCI. The SPARC64_PCI_MSI option is an hidden option that is true when both Sparc64 PCI support is enabled and MSI is enabled. The arch/sparc/kernel/pci_msi.c file is now only built when SPARC64_PCI_MSI is true. Signed-off-by: Thomas Petazzoni Reported-by: Guenter Roeck Tested-by: Guenter Roeck Signed-off-by: David S. Miller --- arch/sparc/Kconfig | 7 ++++++- arch/sparc/kernel/Makefile | 3 ++- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 2137ad667438..78c4fdb91bc5 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -506,12 +506,17 @@ config SUN_OPENPROMFS Only choose N if you know in advance that you will not need to modify OpenPROM settings on the running system. -# Makefile helper +# Makefile helpers config SPARC64_PCI bool default y depends on SPARC64 && PCI +config SPARC64_PCI_MSI + bool + default y + depends on SPARC64_PCI && PCI_MSI + endmenu menu "Executable file formats" diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile index d432fb20358e..d15cc1794b0e 100644 --- a/arch/sparc/kernel/Makefile +++ b/arch/sparc/kernel/Makefile @@ -1,3 +1,4 @@ + # # Makefile for the linux kernel. # @@ -99,7 +100,7 @@ obj-$(CONFIG_STACKTRACE) += stacktrace.o obj-$(CONFIG_SPARC64_PCI) += pci.o pci_common.o psycho_common.o obj-$(CONFIG_SPARC64_PCI) += pci_psycho.o pci_sabre.o pci_schizo.o obj-$(CONFIG_SPARC64_PCI) += pci_sun4v.o pci_sun4v_asm.o pci_fire.o -obj-$(CONFIG_PCI_MSI) += pci_msi.o +obj-$(CONFIG_SPARC64_PCI_MSI) += pci_msi.o obj-$(CONFIG_COMPAT) += sys32.o sys_sparc32.o signal32.o From 4f76d37cdb6523ad42ba666f0e5560e26b4c3749 Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Sun, 29 Sep 2013 17:34:45 -0700 Subject: [PATCH 471/523] ARM: multi_v7_defconfig: add SDHCI for i.MX Turn on SDHCI for i.MX support so machines can boot with local rootfs on SD. Tested on a Wandboard Quad. Signed-off-by: Olof Johansson Reviewed-by: Fabio Estevam --- arch/arm/configs/multi_v7_defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig index f3935b46df29..119fc378fc52 100644 --- a/arch/arm/configs/multi_v7_defconfig +++ b/arch/arm/configs/multi_v7_defconfig @@ -135,6 +135,7 @@ CONFIG_MMC=y CONFIG_MMC_ARMMMCI=y CONFIG_MMC_SDHCI=y CONFIG_MMC_SDHCI_PLTFM=y +CONFIG_MMC_SDHCI_ESDHC_IMX=y CONFIG_MMC_SDHCI_TEGRA=y CONFIG_MMC_SDHCI_SPEAR=y CONFIG_MMC_OMAP=y From 10469350e345599dfef3fa78a7c19fb230e674c1 Mon Sep 17 00:00:00 2001 From: Christian Ruppert Date: Wed, 2 Oct 2013 11:13:38 +0200 Subject: [PATCH 472/523] ARC: Fix signal frame management for SA_SIGINFO Previously, when a signal was registered with SA_SIGINFO, parameters 2 and 3 of the signal handler were written to registers r1 and r2 before the register set was saved. This led to corruption of these two registers after returning from the signal handler (the wrong values were restored). With this patch, registers are now saved before any parameters are passed, thus maintaining the processor state from before signal entry. Signed-off-by: Christian Ruppert Signed-off-by: Vineet Gupta --- arch/arc/kernel/signal.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) diff --git a/arch/arc/kernel/signal.c b/arch/arc/kernel/signal.c index ee6ef2f60a28..7e95e1a86510 100644 --- a/arch/arc/kernel/signal.c +++ b/arch/arc/kernel/signal.c @@ -101,7 +101,6 @@ SYSCALL_DEFINE0(rt_sigreturn) { struct rt_sigframe __user *sf; unsigned int magic; - int err; struct pt_regs *regs = current_pt_regs(); /* Always make any pending restarted system calls return -EINTR */ @@ -119,15 +118,16 @@ SYSCALL_DEFINE0(rt_sigreturn) if (!access_ok(VERIFY_READ, sf, sizeof(*sf))) goto badframe; - err = restore_usr_regs(regs, sf); - err |= __get_user(magic, &sf->sigret_magic); - if (err) + if (__get_user(magic, &sf->sigret_magic)) goto badframe; if (unlikely(is_do_ss_needed(magic))) if (restore_altstack(&sf->uc.uc_stack)) goto badframe; + if (restore_usr_regs(regs, sf)) + goto badframe; + /* Don't restart from sigreturn */ syscall_wont_restart(regs); @@ -190,6 +190,15 @@ setup_rt_frame(int signo, struct k_sigaction *ka, siginfo_t *info, if (!sf) return 1; + /* + * w/o SA_SIGINFO, struct ucontext is partially populated (only + * uc_mcontext/uc_sigmask) for kernel's normal user state preservation + * during signal handler execution. This works for SA_SIGINFO as well + * although the semantics are now overloaded (the same reg state can be + * inspected by userland: but are they allowed to fiddle with it ? + */ + err |= stash_usr_regs(sf, regs, set); + /* * SA_SIGINFO requires 3 args to signal handler: * #1: sig-no (common to any handler) @@ -213,14 +222,6 @@ setup_rt_frame(int signo, struct k_sigaction *ka, siginfo_t *info, magic = MAGIC_SIGALTSTK; } - /* - * w/o SA_SIGINFO, struct ucontext is partially populated (only - * uc_mcontext/uc_sigmask) for kernel's normal user state preservation - * during signal handler execution. This works for SA_SIGINFO as well - * although the semantics are now overloaded (the same reg state can be - * inspected by userland: but are they allowed to fiddle with it ? - */ - err |= stash_usr_regs(sf, regs, set); err |= __put_user(magic, &sf->sigret_magic); if (err) return err; From 29d274b8d3e2404cd1832b3a999b12f9d1e1d895 Mon Sep 17 00:00:00 2001 From: David Herrmann Date: Wed, 2 Oct 2013 16:41:04 +0200 Subject: [PATCH 473/523] x86/simplefb: Mark framebuffer mem-resources as IORESOURCE_BUSY to avoid bootup warning IORESOURCE_BUSY is used to mark temporary driver mem-resources instead of global regions. This suppresses warnings if regions overlap with a region marked as BUSY. This was always the case for VESA/VGA/EFI framebuffer regions so do the same for simplefb regions. The reason we do this is to allow device handover to real GPU drivers like i915/radeon/nouveau which get the same regions via PCI BARs. Maybe at some point we will be able to unregister platform devices properly during the handover. In this case the simplefb region would get removed before the new region is created. However, this is currently not the case and would require rather huge changes in remove_conflicting_framebuffers(). Add the BUSY marker now and try to eventually rewrite the handover for a next release. Also see kernel/resource.c for more information: /* * if a resource is "BUSY", it's not a hardware resource * but a driver mapping of such a resource; we don't want * to warn for those; some drivers legitimately map only * partial hardware resources. (example: vesafb) */ This suppresses warnings like: ------------[ cut here ]------------ WARNING: CPU: 2 PID: 199 at arch/x86/mm/ioremap.c:171 __ioremap_caller+0x2e3/0x390() Info: mapping multiple BARs. Your kernel is fine. Call Trace: dump_stack+0x54/0x8d warn_slowpath_common+0x7d/0xa0 warn_slowpath_fmt+0x4c/0x50 iomem_map_sanity_check+0xac/0xe0 __ioremap_caller+0x2e3/0x390 ioremap_wc+0x32/0x40 i915_driver_load+0x670/0xf50 [i915] ... Reported-by: Tom Gundersen Tested-by: Tom Gundersen Tested-by: Pavel Roskin Signed-off-by: David Herrmann Link: http://lkml.kernel.org/r/1380724864-1757-1-git-send-email-dh.herrmann@gmail.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/sysfb_simplefb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/sysfb_simplefb.c b/arch/x86/kernel/sysfb_simplefb.c index 4ebd636b04b8..86179d409893 100644 --- a/arch/x86/kernel/sysfb_simplefb.c +++ b/arch/x86/kernel/sysfb_simplefb.c @@ -79,7 +79,7 @@ __init int create_simplefb(const struct screen_info *si, /* setup IORESOURCE_MEM as framebuffer memory */ memset(&res, 0, sizeof(res)); - res.flags = IORESOURCE_MEM; + res.flags = IORESOURCE_MEM | IORESOURCE_BUSY; res.name = simplefb_resname; res.start = si->lfb_base; res.end = si->lfb_base + len - 1; From a2ac07fe292ea41296049dfdbfeed203e2467ee7 Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Tue, 1 Oct 2013 19:58:36 +0300 Subject: [PATCH 474/523] Fix NULL dereference in gfn_to_hva_prot() gfn_to_memslot() can return NULL or invalid slot. We need to check slot validity before accessing it. Reviewed-by: Paolo Bonzini Signed-off-by: Gleb Natapov --- virt/kvm/kvm_main.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 979bff485fb0..a9dd682cf5e3 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1064,10 +1064,12 @@ EXPORT_SYMBOL_GPL(gfn_to_hva); unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable) { struct kvm_memory_slot *slot = gfn_to_memslot(kvm, gfn); - if (writable) + unsigned long hva = __gfn_to_hva_many(slot, gfn, NULL, false); + + if (!kvm_is_error_hva(hva) && writable) *writable = !memslot_is_readonly(slot); - return __gfn_to_hva_many(gfn_to_memslot(kvm, gfn), gfn, NULL, false); + return hva; } static int kvm_read_hva(void *data, void __user *hva, int len) From f7e3334a6bcb42e7295a9bd9cb36ca4e6e4e66b4 Mon Sep 17 00:00:00 2001 From: Nathan Fontenot Date: Fri, 27 Sep 2013 10:18:09 -0500 Subject: [PATCH 475/523] powerpc: Fix memory hotplug with sparse vmemmap Previous commit 46723bfa540... introduced a new config option HAVE_BOOTMEM_INFO_NODE that ended up breaking memory hot-remove for ppc when sparse vmemmap is not defined. This patch defines HAVE_BOOTMEM_INFO_NODE for ppc and adds the call to register_page_bootmem_info_node. Without this we get a BUG_ON for memory hot remove in put_page_bootmem(). This also adds a stub for register_page_bootmem_memmap to allow ppc to build with sparse vmemmap defined. Leaving this as a stub is fine since the same vmemmap addresses are also handled in vmemmap_populate and as such are properly mapped. Signed-off-by: Nathan Fontenot Signed-off-by: Benjamin Herrenschmidt CC: [v3.9+] --- arch/powerpc/mm/init_64.c | 4 ++++ arch/powerpc/mm/mem.c | 9 +++++++++ mm/Kconfig | 2 +- 3 files changed, 14 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index d0cd9e4c6837..8ed035d2edb5 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -300,5 +300,9 @@ void vmemmap_free(unsigned long start, unsigned long end) { } +void register_page_bootmem_memmap(unsigned long section_nr, + struct page *start_page, unsigned long size) +{ +} #endif /* CONFIG_SPARSEMEM_VMEMMAP */ diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 1cf9c5b67f24..3fa93dc7fe75 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -297,12 +297,21 @@ void __init paging_init(void) } #endif /* ! CONFIG_NEED_MULTIPLE_NODES */ +static void __init register_page_bootmem_info(void) +{ + int i; + + for_each_online_node(i) + register_page_bootmem_info_node(NODE_DATA(i)); +} + void __init mem_init(void) { #ifdef CONFIG_SWIOTLB swiotlb_init(0); #endif + register_page_bootmem_info(); high_memory = (void *) __va(max_low_pfn * PAGE_SIZE); set_max_mapnr(max_pfn); free_all_bootmem(); diff --git a/mm/Kconfig b/mm/Kconfig index 026771a9b097..394838f489eb 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -183,7 +183,7 @@ config MEMORY_HOTPLUG_SPARSE config MEMORY_HOTREMOVE bool "Allow for memory hot remove" select MEMORY_ISOLATION - select HAVE_BOOTMEM_INFO_NODE if X86_64 + select HAVE_BOOTMEM_INFO_NODE if (X86_64 || PPC64) depends on MEMORY_HOTPLUG && ARCH_ENABLE_MEMORY_HOTREMOVE depends on MIGRATION From d9813c3681a36774b254c0cdc9cce53c9e22c756 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Tue, 1 Oct 2013 16:54:05 +1000 Subject: [PATCH 476/523] powerpc: Fix parameter clobber in csum_partial_copy_generic() The csum_partial_copy_generic() uses register r7 to adjust the remaining bytes to process. Unfortunately, r7 also holds a parameter, namely the address of the flag to set in case of access exceptions while reading the source buffer. Lacking a quantum implementation of PowerPC, this commit instead uses register r9 to do the adjusting, leaving r7's pointer uncorrupted. Signed-off-by: Paul E. McKenney Signed-off-by: Anton Blanchard Cc: stable@vger.kernel.org Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/lib/checksum_64.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/lib/checksum_64.S b/arch/powerpc/lib/checksum_64.S index 167f72555d60..609665aede75 100644 --- a/arch/powerpc/lib/checksum_64.S +++ b/arch/powerpc/lib/checksum_64.S @@ -269,8 +269,8 @@ _GLOBAL(csum_partial_copy_generic) rldicl. r6,r3,64-1,64-2 /* r6 = (r3 & 0x3) >> 1 */ beq .Lcopy_aligned - li r7,4 - sub r6,r7,r6 + li r9,4 + sub r6,r9,r6 mtctr r6 1: From 8f21bd0090052e740944f9397e2be5ac7957ded7 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Tue, 1 Oct 2013 17:11:35 +1000 Subject: [PATCH 477/523] powerpc: Restore registers on error exit from csum_partial_copy_generic() The csum_partial_copy_generic() function saves the PowerPC non-volatile r14, r15, and r16 registers for the main checksum-and-copy loop. Unfortunately, it fails to restore them upon error exit from this loop, which results in silent corruption of these registers in the presumably rare event of an access exception within that loop. This commit therefore restores these register on error exit from the loop. Signed-off-by: Paul E. McKenney Signed-off-by: Anton Blanchard Cc: stable@vger.kernel.org Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/lib/checksum_64.S | 54 +++++++++++++++++++++++++--------- 1 file changed, 40 insertions(+), 14 deletions(-) diff --git a/arch/powerpc/lib/checksum_64.S b/arch/powerpc/lib/checksum_64.S index 609665aede75..57a072065057 100644 --- a/arch/powerpc/lib/checksum_64.S +++ b/arch/powerpc/lib/checksum_64.S @@ -226,19 +226,35 @@ _GLOBAL(csum_partial) blr - .macro source + .macro srcnr 100: .section __ex_table,"a" .align 3 - .llong 100b,.Lsrc_error + .llong 100b,.Lsrc_error_nr + .previous + .endm + + .macro source +150: + .section __ex_table,"a" + .align 3 + .llong 150b,.Lsrc_error + .previous + .endm + + .macro dstnr +200: + .section __ex_table,"a" + .align 3 + .llong 200b,.Ldest_error_nr .previous .endm .macro dest -200: +250: .section __ex_table,"a" .align 3 - .llong 200b,.Ldest_error + .llong 250b,.Ldest_error .previous .endm @@ -274,11 +290,11 @@ _GLOBAL(csum_partial_copy_generic) mtctr r6 1: -source; lhz r6,0(r3) /* align to doubleword */ +srcnr; lhz r6,0(r3) /* align to doubleword */ subi r5,r5,2 addi r3,r3,2 adde r0,r0,r6 -dest; sth r6,0(r4) +dstnr; sth r6,0(r4) addi r4,r4,2 bdnz 1b @@ -392,10 +408,10 @@ dest; std r16,56(r4) mtctr r6 3: -source; ld r6,0(r3) +srcnr; ld r6,0(r3) addi r3,r3,8 adde r0,r0,r6 -dest; std r6,0(r4) +dstnr; std r6,0(r4) addi r4,r4,8 bdnz 3b @@ -405,10 +421,10 @@ dest; std r6,0(r4) srdi. r6,r5,2 beq .Lcopy_tail_halfword -source; lwz r6,0(r3) +srcnr; lwz r6,0(r3) addi r3,r3,4 adde r0,r0,r6 -dest; stw r6,0(r4) +dstnr; stw r6,0(r4) addi r4,r4,4 subi r5,r5,4 @@ -416,10 +432,10 @@ dest; stw r6,0(r4) srdi. r6,r5,1 beq .Lcopy_tail_byte -source; lhz r6,0(r3) +srcnr; lhz r6,0(r3) addi r3,r3,2 adde r0,r0,r6 -dest; sth r6,0(r4) +dstnr; sth r6,0(r4) addi r4,r4,2 subi r5,r5,2 @@ -427,10 +443,10 @@ dest; sth r6,0(r4) andi. r6,r5,1 beq .Lcopy_finish -source; lbz r6,0(r3) +srcnr; lbz r6,0(r3) sldi r9,r6,8 /* Pad the byte out to 16 bits */ adde r0,r0,r9 -dest; stb r6,0(r4) +dstnr; stb r6,0(r4) .Lcopy_finish: addze r0,r0 /* add in final carry */ @@ -440,6 +456,11 @@ dest; stb r6,0(r4) blr .Lsrc_error: + ld r14,STK_REG(R14)(r1) + ld r15,STK_REG(R15)(r1) + ld r16,STK_REG(R16)(r1) + addi r1,r1,STACKFRAMESIZE +.Lsrc_error_nr: cmpdi 0,r7,0 beqlr li r6,-EFAULT @@ -447,6 +468,11 @@ dest; stb r6,0(r4) blr .Ldest_error: + ld r14,STK_REG(R14)(r1) + ld r15,STK_REG(R15)(r1) + ld r16,STK_REG(R16)(r1) + addi r1,r1,STACKFRAMESIZE +.Ldest_error_nr: cmpdi 0,r8,0 beqlr li r6,-EFAULT From d1211af3049f4c9c1d8d4eb8f8098cc4f4f0d0c7 Mon Sep 17 00:00:00 2001 From: Madhavan Srinivasan Date: Wed, 2 Oct 2013 00:34:10 +0530 Subject: [PATCH 478/523] powerpc/sysfs: Disable writing to PURR in guest mode arch/powerpc/kernel/sysfs.c exports PURR with write permission. This may be valid for kernel in phyp mode. But writing to the file in guest mode causes crash due to a priviledge violation Signed-off-by: Madhavan Srinivasan Signed-off-by: Benjamin Herrenschmidt CC: --- arch/powerpc/kernel/sysfs.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c index 27a90b99ef67..b4e667663d9b 100644 --- a/arch/powerpc/kernel/sysfs.c +++ b/arch/powerpc/kernel/sysfs.c @@ -17,6 +17,7 @@ #include #include #include +#include #include "cacheinfo.h" @@ -179,15 +180,25 @@ SYSFS_PMCSETUP(spurr, SPRN_SPURR); SYSFS_PMCSETUP(dscr, SPRN_DSCR); SYSFS_PMCSETUP(pir, SPRN_PIR); +/* + Lets only enable read for phyp resources and + enable write when needed with a separate function. + Lets be conservative and default to pseries. +*/ static DEVICE_ATTR(mmcra, 0600, show_mmcra, store_mmcra); static DEVICE_ATTR(spurr, 0400, show_spurr, NULL); static DEVICE_ATTR(dscr, 0600, show_dscr, store_dscr); -static DEVICE_ATTR(purr, 0600, show_purr, store_purr); +static DEVICE_ATTR(purr, 0400, show_purr, store_purr); static DEVICE_ATTR(pir, 0400, show_pir, NULL); unsigned long dscr_default = 0; EXPORT_SYMBOL(dscr_default); +static void add_write_permission_dev_attr(struct device_attribute *attr) +{ + attr->attr.mode |= 0200; +} + static ssize_t show_dscr_default(struct device *dev, struct device_attribute *attr, char *buf) { @@ -394,8 +405,11 @@ static void register_cpu_online(unsigned int cpu) if (cpu_has_feature(CPU_FTR_MMCRA)) device_create_file(s, &dev_attr_mmcra); - if (cpu_has_feature(CPU_FTR_PURR)) + if (cpu_has_feature(CPU_FTR_PURR)) { + if (!firmware_has_feature(FW_FEATURE_LPAR)) + add_write_permission_dev_attr(&dev_attr_purr); device_create_file(s, &dev_attr_purr); + } if (cpu_has_feature(CPU_FTR_SPURR)) device_create_file(s, &dev_attr_spurr); From 1cf389df090194a0976dc867b7fffe99d9d490cb Mon Sep 17 00:00:00 2001 From: Nishanth Aravamudan Date: Tue, 1 Oct 2013 14:04:53 -0700 Subject: [PATCH 479/523] powerpc/iommu: Use GFP_KERNEL instead of GFP_ATOMIC in iommu_init_table() Under heavy (DLPAR?) stress, we tripped this panic() in arch/powerpc/kernel/iommu.c::iommu_init_table(): page = alloc_pages_node(nid, GFP_ATOMIC, get_order(sz)); if (!page) panic("iommu_init_table: Can't allocate %ld bytes\n", sz); Before the panic() we got a page allocation failure for an order-2 allocation. There appears to be memory free, but perhaps not in the ATOMIC context. I looked through all the call-sites of iommu_init_table() and didn't see any obvious reason to need an ATOMIC allocation. Most call-sites in fact have an explicit GFP_KERNEL allocation shortly before the call to iommu_init_table(), indicating we are not in an atomic context. There is some indirection for some paths, but I didn't see any locks indicating that GFP_KERNEL is inappropriate. With this change under the same conditions, we have not been able to reproduce the panic. Signed-off-by: Nishanth Aravamudan Signed-off-by: Benjamin Herrenschmidt CC: --- arch/powerpc/kernel/iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c index 0adab06ce5c0..572bb5b95f35 100644 --- a/arch/powerpc/kernel/iommu.c +++ b/arch/powerpc/kernel/iommu.c @@ -661,7 +661,7 @@ struct iommu_table *iommu_init_table(struct iommu_table *tbl, int nid) /* number of bytes needed for the bitmap */ sz = BITS_TO_LONGS(tbl->it_size) * sizeof(unsigned long); - page = alloc_pages_node(nid, GFP_ATOMIC, get_order(sz)); + page = alloc_pages_node(nid, GFP_KERNEL, get_order(sz)); if (!page) panic("iommu_init_table: Can't allocate %ld bytes\n", sz); tbl->it_map = page_address(page); From e82b89a6f19bae73fb064d1b3dd91fcefbb478f4 Mon Sep 17 00:00:00 2001 From: Prarit Bhargava Date: Mon, 23 Sep 2013 09:33:36 -0400 Subject: [PATCH 480/523] powerpc/vio: Fix modalias_show return values modalias_show() should return an empty string on error, not -ENODEV. This causes the following false and annoying error: > find /sys/devices -name modalias -print0 | xargs -0 cat >/dev/null cat: /sys/devices/vio/4000/modalias: No such device cat: /sys/devices/vio/4001/modalias: No such device cat: /sys/devices/vio/4002/modalias: No such device cat: /sys/devices/vio/4004/modalias: No such device cat: /sys/devices/vio/modalias: No such device Signed-off-by: Prarit Bhargava Signed-off-by: Benjamin Herrenschmidt CC: --- arch/powerpc/kernel/vio.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index 78a350670de3..d38cc08b16c7 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -1530,11 +1530,15 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, const char *cp; dn = dev->of_node; - if (!dn) - return -ENODEV; + if (!dn) { + strcat(buf, "\n"); + return strlen(buf); + } cp = of_get_property(dn, "compatible", NULL); - if (!cp) - return -ENODEV; + if (!cp) { + strcat(buf, "\n"); + return strlen(buf); + } return sprintf(buf, "vio:T%sS%s\n", vio_dev->type, cp); } From a53b27b3abeef406de92a2bb0ceb6fb4c3fb8fc4 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Wed, 2 Oct 2013 18:04:06 +1000 Subject: [PATCH 481/523] powerpc/perf: Fix handling of FAB events Commit 4df4899 "Add power8 EBB support" included a bug in the handling of the FAB_CRESP_MATCH and FAB_TYPE_MATCH fields. These values are pulled out of the event code using EVENT_THR_CTL_SHIFT, however we were then or'ing that value directly into MMCR1. This meant we were failing to set the FAB fields correctly, and also potentially corrupting the value for PMC4SEL. Leading to no counts for the FAB events and incorrect counts for PMC4. The fix is simply to shift left the FAB value correctly before or'ing it with MMCR1. Reported-by: Sooraj Ravindran Nair Signed-off-by: Michael Ellerman Cc: # 3.10+ Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/perf/power8-pmu.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/perf/power8-pmu.c b/arch/powerpc/perf/power8-pmu.c index 2ee4a707f0df..a3f7abd2f13f 100644 --- a/arch/powerpc/perf/power8-pmu.c +++ b/arch/powerpc/perf/power8-pmu.c @@ -199,6 +199,7 @@ #define MMCR1_UNIT_SHIFT(pmc) (60 - (4 * ((pmc) - 1))) #define MMCR1_COMBINE_SHIFT(pmc) (35 - ((pmc) - 1)) #define MMCR1_PMCSEL_SHIFT(pmc) (24 - (((pmc) - 1)) * 8) +#define MMCR1_FAB_SHIFT 36 #define MMCR1_DC_QUAL_SHIFT 47 #define MMCR1_IC_QUAL_SHIFT 46 @@ -388,8 +389,8 @@ static int power8_compute_mmcr(u64 event[], int n_ev, * the threshold bits are used for the match value. */ if (event_is_fab_match(event[i])) { - mmcr1 |= (event[i] >> EVENT_THR_CTL_SHIFT) & - EVENT_THR_CTL_MASK; + mmcr1 |= ((event[i] >> EVENT_THR_CTL_SHIFT) & + EVENT_THR_CTL_MASK) << MMCR1_FAB_SHIFT; } else { val = (event[i] >> EVENT_THR_CTL_SHIFT) & EVENT_THR_CTL_MASK; mmcra |= val << MMCRA_THR_CTL_SHIFT; From c69e63b0f135fa51d6e1c38b5ac8a1def15ea3fa Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Wed, 2 Oct 2013 17:15:15 +1000 Subject: [PATCH 482/523] powerpc/tm: Turn interrupts hard off in tm_reclaim() We can't take IRQs in tm_reclaim as we might have a bogus r13 and r1. This turns IRQs hard off in this function. Signed-off-by: Michael Neuling Cc: # 3.9+ Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/tm.S | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S index 7b60b9851469..8ece1908be1a 100644 --- a/arch/powerpc/kernel/tm.S +++ b/arch/powerpc/kernel/tm.S @@ -123,6 +123,7 @@ _GLOBAL(tm_reclaim) mr r15, r14 ori r15, r15, MSR_FP li r16, MSR_RI + ori r16, r16, MSR_EE /* IRQs hard off */ andc r15, r15, r16 oris r15, r15, MSR_VEC@h #ifdef CONFIG_VSX From e9bdc3d6143d1c4b8d8ce5231fc958268331f983 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Thu, 26 Sep 2013 13:29:09 +1000 Subject: [PATCH 483/523] powerpc/tm: Switch out userspace PPR and DSCR sooner When we do a treclaim or trecheckpoint we end up running with userspace PPR and DSCR values. Currently we don't do anything special to avoid running with user values which could cause a severe performance degradation. This patch moves the PPR and DSCR save and restore around treclaim and trecheckpoint so that we run with user values for a much shorter period. More care is taken with the PPR as it's impact is greater than the DSCR. This is similar to user exceptions, where we run HTM_MEDIUM early to ensure that we don't run with a userspace PPR values in the kernel. Signed-off-by: Michael Neuling Cc: # 3.9+ Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/tm.S | 96 ++++++++++++++++++++++++++-------------- 1 file changed, 64 insertions(+), 32 deletions(-) diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S index 8ece1908be1a..cd809eaa8b5c 100644 --- a/arch/powerpc/kernel/tm.S +++ b/arch/powerpc/kernel/tm.S @@ -79,6 +79,11 @@ _GLOBAL(tm_abort) TABORT(R3) blr + .section ".toc","aw" +DSCR_DEFAULT: + .tc dscr_default[TC],dscr_default + + .section ".text" /* void tm_reclaim(struct thread_struct *thread, * unsigned long orig_msr, @@ -188,11 +193,18 @@ dont_backup_fp: std r1, PACATMSCRATCH(r13) ld r1, PACAR1(r13) + /* Store the PPR in r11 and reset to decent value */ + std r11, GPR11(r1) /* Temporary stash */ + mfspr r11, SPRN_PPR + HMT_MEDIUM + /* Now get some more GPRS free */ std r7, GPR7(r1) /* Temporary stash */ std r12, GPR12(r1) /* '' '' '' */ ld r12, STACK_PARAM(0)(r1) /* Param 0, thread_struct * */ + std r11, THREAD_TM_PPR(r12) /* Store PPR and free r11 */ + addi r7, r12, PT_CKPT_REGS /* Thread's ckpt_regs */ /* Make r7 look like an exception frame so that we @@ -204,15 +216,19 @@ dont_backup_fp: SAVE_GPR(0, r7) /* user r0 */ SAVE_GPR(2, r7) /* user r2 */ SAVE_4GPRS(3, r7) /* user r3-r6 */ - SAVE_4GPRS(8, r7) /* user r8-r11 */ + SAVE_GPR(8, r7) /* user r8 */ + SAVE_GPR(9, r7) /* user r9 */ + SAVE_GPR(10, r7) /* user r10 */ ld r3, PACATMSCRATCH(r13) /* user r1 */ ld r4, GPR7(r1) /* user r7 */ - ld r5, GPR12(r1) /* user r12 */ - GET_SCRATCH0(6) /* user r13 */ + ld r5, GPR11(r1) /* user r11 */ + ld r6, GPR12(r1) /* user r12 */ + GET_SCRATCH0(8) /* user r13 */ std r3, GPR1(r7) std r4, GPR7(r7) - std r5, GPR12(r7) - std r6, GPR13(r7) + std r5, GPR11(r7) + std r6, GPR12(r7) + std r8, GPR13(r7) SAVE_NVGPRS(r7) /* user r14-r31 */ @@ -235,14 +251,12 @@ dont_backup_fp: std r6, _XER(r7) - /* ******************** TAR, PPR, DSCR ********** */ + /* ******************** TAR, DSCR ********** */ mfspr r3, SPRN_TAR - mfspr r4, SPRN_PPR - mfspr r5, SPRN_DSCR + mfspr r4, SPRN_DSCR std r3, THREAD_TM_TAR(r12) - std r4, THREAD_TM_PPR(r12) - std r5, THREAD_TM_DSCR(r12) + std r4, THREAD_TM_DSCR(r12) /* MSR and flags: We don't change CRs, and we don't need to alter * MSR. @@ -259,7 +273,7 @@ dont_backup_fp: std r3, THREAD_TM_TFHAR(r12) std r4, THREAD_TM_TFIAR(r12) - /* AMR and PPR are checkpointed too, but are unsupported by Linux. */ + /* AMR is checkpointed too, but is unsupported by Linux. */ /* Restore original MSR/IRQ state & clear TM mode */ ld r14, TM_FRAME_L0(r1) /* Orig MSR */ @@ -275,6 +289,12 @@ dont_backup_fp: mtcr r4 mtlr r0 ld r2, 40(r1) + + /* Load system default DSCR */ + ld r4, DSCR_DEFAULT@toc(r2) + ld r0, 0(r4) + mtspr SPRN_DSCR, r0 + blr @@ -359,25 +379,24 @@ dont_restore_fp: restore_gprs: - /* ******************** TAR, PPR, DSCR ********** */ - ld r4, THREAD_TM_TAR(r3) - ld r5, THREAD_TM_PPR(r3) - ld r6, THREAD_TM_DSCR(r3) - - mtspr SPRN_TAR, r4 - mtspr SPRN_PPR, r5 - mtspr SPRN_DSCR, r6 - /* ******************** CR,LR,CCR,MSR ********** */ - ld r3, _CTR(r7) - ld r4, _LINK(r7) - ld r5, _CCR(r7) - ld r6, _XER(r7) + ld r4, _CTR(r7) + ld r5, _LINK(r7) + ld r6, _CCR(r7) + ld r8, _XER(r7) - mtctr r3 - mtlr r4 - mtcr r5 - mtxer r6 + mtctr r4 + mtlr r5 + mtcr r6 + mtxer r8 + + /* ******************** TAR ******************** */ + ld r4, THREAD_TM_TAR(r3) + mtspr SPRN_TAR, r4 + + /* Load up the PPR and DSCR in GPRs only at this stage */ + ld r5, THREAD_TM_DSCR(r3) + ld r6, THREAD_TM_PPR(r3) /* Clear the MSR RI since we are about to change R1. EE is already off */ @@ -385,19 +404,26 @@ restore_gprs: mtmsrd r4, 1 REST_4GPRS(0, r7) /* GPR0-3 */ - REST_GPR(4, r7) /* GPR4-6 */ - REST_GPR(5, r7) - REST_GPR(6, r7) + REST_GPR(4, r7) /* GPR4 */ REST_4GPRS(8, r7) /* GPR8-11 */ REST_2GPRS(12, r7) /* GPR12-13 */ REST_NVGPRS(r7) /* GPR14-31 */ - ld r7, GPR7(r7) /* GPR7 */ + /* Load up PPR and DSCR here so we don't run with user values for long + */ + mtspr SPRN_DSCR, r5 + mtspr SPRN_PPR, r6 + + REST_GPR(5, r7) /* GPR5-7 */ + REST_GPR(6, r7) + ld r7, GPR7(r7) /* Commit register state as checkpointed state: */ TRECHKPT + HMT_MEDIUM + /* Our transactional state has now changed. * * Now just get out of here. Transactional (current) state will be @@ -420,6 +446,12 @@ restore_gprs: mtcr r4 mtlr r0 ld r2, 40(r1) + + /* Load system default DSCR */ + ld r4, DSCR_DEFAULT@toc(r2) + ld r0, 0(r4) + mtspr SPRN_DSCR, r0 + blr /* ****************************************************************** */ From c807f64340932e19f0d2ac9b30c8381e1f60663a Mon Sep 17 00:00:00 2001 From: Jack Wang Date: Mon, 30 Sep 2013 10:09:05 +0200 Subject: [PATCH 484/523] ib_srpt: always set response for task management The SRP specification requires: "Response data shall be provided in any SRP_RSP response that is sent in response to an SRP_TSK_MGMT request (see 6.7). The information in the RSP_CODE field (see table 24) shall indicate the completion status of the task management function." So fix this to avoid the SRP initiator interprets task management functions that succeeded as failed. Signed-off-by: Jack Wang Cc: stable@vger.kernel.org # 3.3+ Signed-off-by: Nicholas Bellinger --- drivers/infiniband/ulp/srpt/ib_srpt.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c index 9ea7727a2825..6c923c7039a1 100644 --- a/drivers/infiniband/ulp/srpt/ib_srpt.c +++ b/drivers/infiniband/ulp/srpt/ib_srpt.c @@ -1588,7 +1588,7 @@ static int srpt_build_tskmgmt_rsp(struct srpt_rdma_ch *ch, int resp_data_len; int resp_len; - resp_data_len = (rsp_code == SRP_TSK_MGMT_SUCCESS) ? 0 : 4; + resp_data_len = 4; resp_len = sizeof(*srp_rsp) + resp_data_len; srp_rsp = ioctx->ioctx.buf; @@ -1600,11 +1600,9 @@ static int srpt_build_tskmgmt_rsp(struct srpt_rdma_ch *ch, + atomic_xchg(&ch->req_lim_delta, 0)); srp_rsp->tag = tag; - if (rsp_code != SRP_TSK_MGMT_SUCCESS) { - srp_rsp->flags |= SRP_RSP_FLAG_RSPVALID; - srp_rsp->resp_data_len = cpu_to_be32(resp_data_len); - srp_rsp->data[3] = rsp_code; - } + srp_rsp->flags |= SRP_RSP_FLAG_RSPVALID; + srp_rsp->resp_data_len = cpu_to_be32(resp_data_len); + srp_rsp->data[3] = rsp_code; return resp_len; } From b7191253b302a9b98758c3616761ae111b6264b9 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Tue, 1 Oct 2013 16:46:37 -0700 Subject: [PATCH 485/523] target: Reset data_length for COMPARE_AND_WRITE to NoLB * block_size This patch resets se_cmd->data_length for COMPARE_AND_WRITE emulation within sbc_compare_and_write() to NoLB * block_size in order to address a bug with FILEIO backends where a I/O failure will occur when data_length does not match the I/O size being actually dispatched for the individual per block READs + WRITEs. This is done late enough in sbc_compare_and_write() after the memory allocations have occured in transport_generic_new_cmd() to not cause any unwanted side-effects. Reported-by: Thomas Glanzmann Tested-by: Thomas Glanzmann Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_sbc.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c index 6c17295e8d7c..a9dca116011e 100644 --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -508,6 +508,12 @@ sbc_compare_and_write(struct se_cmd *cmd) cmd->transport_complete_callback = NULL; return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } + /* + * Reset cmd->data_length to individual block_size in order to not + * confuse backend drivers that depend on this value matching the + * size of the I/O being submitted. + */ + cmd->data_length = cmd->t_task_nolb * dev->dev_attrib.block_size; ret = cmd->execute_rw(cmd, cmd->t_bidi_data_sg, cmd->t_bidi_data_nents, DMA_FROM_DEVICE); From d8855c154e748c9ccd7c78e6478560ed61438e7d Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Tue, 1 Oct 2013 16:53:10 -0700 Subject: [PATCH 486/523] target: Fix recursive COMPARE_AND_WRITE callback failure This patch addresses a bug when compare_and_write_callback() invoked from target_complete_ok_work() hits an failure from __target_execute_cmd() -> cmd->execute_cmd(), that ends up calling transport_generic_request_failure() -> compare_and_write_post(), thus causing SCF_COMPARE_AND_WRITE_POST to incorrectly be set. The result of this bug is that target_complete_ok_work() no longer hits the if (!rc && !(cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE_POST) check that forces an immediate return, and instead double completes the se_cmd in question, triggering an OOPs in the process. This patch changes compare_and_write_post() to only set this bit when a failure has not already occured to ensure the immediate return from within target_complete_ok_work(), and thus allow transport_generic_request_failure() to handle the sending of the CHECK_CONDITION exception status. Reported-by: Thomas Glanzmann Tested-by: Thomas Glanzmann Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_sbc.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c index a9dca116011e..1393d0ed746a 100644 --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -349,7 +349,16 @@ static sense_reason_t compare_and_write_post(struct se_cmd *cmd) { struct se_device *dev = cmd->se_dev; - cmd->se_cmd_flags |= SCF_COMPARE_AND_WRITE_POST; + /* + * Only set SCF_COMPARE_AND_WRITE_POST to force a response fall-through + * within target_complete_ok_work() if the command was successfully + * sent to the backend driver. + */ + spin_lock_irq(&cmd->t_state_lock); + if ((cmd->transport_state & CMD_T_SENT) && !cmd->scsi_status) + cmd->se_cmd_flags |= SCF_COMPARE_AND_WRITE_POST; + spin_unlock_irq(&cmd->t_state_lock); + /* * Unlock ->caw_sem originally obtained during sbc_compare_and_write() * before the original READ I/O submission. From db60df88ec39715fc3fb2a846cf35837e074c11d Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Tue, 1 Oct 2013 17:04:40 -0700 Subject: [PATCH 487/523] target: Fail on non zero scsi_status in compare_and_write_callback This patch addresses a bug for backends such as IBLOCK that perform asynchronous completion via transport_complete_cmd(), that will call target_complete_failure_work() -> transport_generic_request_failure(), upon exception status and invoke cmd->transport_complete_callback() -> compare_and_write_callback() incorrectly during the failure case. It adds a check for a non zero se_cmd->scsi_status within the first invocation of compare_and_write_callback(), and will jump to out plus up se_device->caw_sem before exiting the callback. Reported-by: Thomas Glanzmann Tested-by: Thomas Glanzmann Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_sbc.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c index 1393d0ed746a..4714c6f8da4b 100644 --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -372,7 +372,7 @@ static sense_reason_t compare_and_write_callback(struct se_cmd *cmd) { struct se_device *dev = cmd->se_dev; struct scatterlist *write_sg = NULL, *sg; - unsigned char *buf, *addr; + unsigned char *buf = NULL, *addr; struct sg_mapping_iter m; unsigned int offset = 0, len; unsigned int nlbas = cmd->t_task_nolb; @@ -387,6 +387,15 @@ static sense_reason_t compare_and_write_callback(struct se_cmd *cmd) */ if (!cmd->t_data_sg || !cmd->t_bidi_data_sg) return TCM_NO_SENSE; + /* + * Immediately exit + release dev->caw_sem if command has already + * been failed with a non-zero SCSI status. + */ + if (cmd->scsi_status) { + pr_err("compare_and_write_callback: non zero scsi_status:" + " 0x%02x\n", cmd->scsi_status); + goto out; + } buf = kzalloc(cmd->data_length, GFP_KERNEL); if (!buf) { From e255a28598e8e63070322fc89bd34189dd660a89 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Thu, 3 Oct 2013 13:37:21 -0700 Subject: [PATCH 488/523] iscsi-target: Only perform wait_for_tasks when performing shutdown This patch changes transport_generic_free_cmd() to only wait_for_tasks when shutdown=true is passed to iscsit_free_cmd(). With the advent of >= v3.10 iscsi-target code using se_cmd->cmd_kref, the extra wait_for_tasks with shutdown=false is unnecessary, and may end up causing an extra context switch when releasing WRITEs. Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Nicholas Bellinger --- drivers/target/iscsi/iscsi_target_util.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c index f2de28e178fd..b0cac0c342e1 100644 --- a/drivers/target/iscsi/iscsi_target_util.c +++ b/drivers/target/iscsi/iscsi_target_util.c @@ -736,7 +736,7 @@ void iscsit_free_cmd(struct iscsi_cmd *cmd, bool shutdown) * Fallthrough */ case ISCSI_OP_SCSI_TMFUNC: - rc = transport_generic_free_cmd(&cmd->se_cmd, 1); + rc = transport_generic_free_cmd(&cmd->se_cmd, shutdown); if (!rc && shutdown && se_cmd && se_cmd->se_sess) { __iscsit_free_cmd(cmd, true, shutdown); target_put_sess_cmd(se_cmd->se_sess, se_cmd); @@ -752,7 +752,7 @@ void iscsit_free_cmd(struct iscsi_cmd *cmd, bool shutdown) se_cmd = &cmd->se_cmd; __iscsit_free_cmd(cmd, true, shutdown); - rc = transport_generic_free_cmd(&cmd->se_cmd, 1); + rc = transport_generic_free_cmd(&cmd->se_cmd, shutdown); if (!rc && shutdown && se_cmd->se_sess) { __iscsit_free_cmd(cmd, true, shutdown); target_put_sess_cmd(se_cmd->se_sess, se_cmd); From f56cbbb4b5871e5bc2838ddeeba5b29debc2a734 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Thu, 3 Oct 2013 13:56:14 -0700 Subject: [PATCH 489/523] iscsi-target: Perform release of acknowledged tags from RX context This patch converts iscsit_ack_from_expstatsn() to populate a local ack_list of commands, and call iscsit_free_cmd() directly from RX thread context, instead of using iscsit_add_cmd_to_immediate_queue() to queue the acknowledged commands to be released from TX thread context. It is helpful to release the acknowledge commands as quickly as possible, along with the associated percpu_ida tags, in order to prevent percpu_ida_alloc() from having to steal tags from other CPUs while waiting for iscsit_free_cmd() to happen from TX thread context. Signed-off-by: Nicholas Bellinger --- drivers/target/iscsi/iscsi_target.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 35b61f7d6c63..38e44b9abf0f 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -753,7 +753,8 @@ static void iscsit_unmap_iovec(struct iscsi_cmd *cmd) static void iscsit_ack_from_expstatsn(struct iscsi_conn *conn, u32 exp_statsn) { - struct iscsi_cmd *cmd; + LIST_HEAD(ack_list); + struct iscsi_cmd *cmd, *cmd_p; conn->exp_statsn = exp_statsn; @@ -761,19 +762,23 @@ static void iscsit_ack_from_expstatsn(struct iscsi_conn *conn, u32 exp_statsn) return; spin_lock_bh(&conn->cmd_lock); - list_for_each_entry(cmd, &conn->conn_cmd_list, i_conn_node) { + list_for_each_entry_safe(cmd, cmd_p, &conn->conn_cmd_list, i_conn_node) { spin_lock(&cmd->istate_lock); if ((cmd->i_state == ISTATE_SENT_STATUS) && iscsi_sna_lt(cmd->stat_sn, exp_statsn)) { cmd->i_state = ISTATE_REMOVE; spin_unlock(&cmd->istate_lock); - iscsit_add_cmd_to_immediate_queue(cmd, conn, - cmd->i_state); + list_move_tail(&cmd->i_conn_node, &ack_list); continue; } spin_unlock(&cmd->istate_lock); } spin_unlock_bh(&conn->cmd_lock); + + list_for_each_entry_safe(cmd, cmd_p, &ack_list, i_conn_node) { + list_del(&cmd->i_conn_node); + iscsit_free_cmd(cmd, false); + } } static int iscsit_allocate_iovecs(struct iscsi_cmd *cmd) From 9e20ae339721d614a1b0768c48bd73b456ff7905 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Thu, 3 Oct 2013 14:03:59 -0700 Subject: [PATCH 490/523] iscsi-target; Allow an extra tag_num / 2 number of percpu_ida tags This patch bumps the default number of tags allocated per session by iscsi-target via transport_alloc_session_tags() -> percpu_ida_init() by another (tag_num / 2). This is done to take into account the tags waiting to be acknowledged and released in iscsit_ack_from_expstatsn(), but who's number are not directly limited by the CmdSN Window queue_depth being enforced by the target. Using a larger value here is also useful to prevent percpu_ida_alloc() from having to steal tags from other CPUs when no tags are available on the local CPU, while waiting for unacknowledged tags to be released. Signed-off-by: Nicholas Bellinger --- drivers/target/iscsi/iscsi_target_nego.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/target/iscsi/iscsi_target_nego.c b/drivers/target/iscsi/iscsi_target_nego.c index 14d1aed5af1d..ef6d836a4d09 100644 --- a/drivers/target/iscsi/iscsi_target_nego.c +++ b/drivers/target/iscsi/iscsi_target_nego.c @@ -1192,7 +1192,7 @@ get_target: */ alloc_tags: tag_num = max_t(u32, ISCSIT_MIN_TAGS, queue_depth); - tag_num += ISCSIT_EXTRA_TAGS; + tag_num += (tag_num / 2) + ISCSIT_EXTRA_TAGS; tag_size = sizeof(struct iscsi_cmd) + conn->conn_transport->priv_size; ret = transport_alloc_session_tags(sess->se_sess, tag_num, tag_size); From 677a31565692d596ef42ea589b53ba289abf4713 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Wed, 2 Oct 2013 14:57:51 +0100 Subject: [PATCH 491/523] staging: comedi: ni_65xx: (bug fix) confine insn_bits to one subdevice The `insn_bits` handler `ni_65xx_dio_insn_bits()` has a `for` loop that currently writes (optionally) and reads back up to 5 "ports" consisting of 8 channels each. It reads up to 32 1-bit channels but can only read and write a whole port at once - it needs to handle up to 5 ports as the first channel it reads might not be aligned on a port boundary. It breaks out of the loop early if the next port it handles is beyond the final port on the card. It also breaks out early on the 5th port in the loop if the first channel was aligned. Unfortunately, it doesn't check that the current port it is dealing with belongs to the comedi subdevice the `insn_bits` handler is acting on. That's a bug. Redo the `for` loop to terminate after the final port belonging to the subdevice, changing the loop variable in the process to simplify things a bit. The `for` loop could now try and handle more than 5 ports if the subdevice has more than 40 channels, but the test `if (bitshift >= 32)` ensures it will break out early after 4 or 5 ports (depending on whether the first channel is aligned on a port boundary). (`bitshift` will be between -7 and 7 inclusive on the first iteration, increasing by 8 for each subsequent operation.) Signed-off-by: Ian Abbott Cc: # 3.10.y 3.11.y 3.12.y Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/ni_65xx.c | 25 ++++++++++-------------- 1 file changed, 10 insertions(+), 15 deletions(-) diff --git a/drivers/staging/comedi/drivers/ni_65xx.c b/drivers/staging/comedi/drivers/ni_65xx.c index 3ba4c5712dff..853f62b2b1a9 100644 --- a/drivers/staging/comedi/drivers/ni_65xx.c +++ b/drivers/staging/comedi/drivers/ni_65xx.c @@ -369,28 +369,23 @@ static int ni_65xx_dio_insn_bits(struct comedi_device *dev, { const struct ni_65xx_board *board = comedi_board(dev); struct ni_65xx_private *devpriv = dev->private; - unsigned base_bitfield_channel; - const unsigned max_ports_per_bitfield = 5; + int base_bitfield_channel; unsigned read_bits = 0; - unsigned j; + int last_port_offset = ni_65xx_port_by_channel(s->n_chan - 1); + int port_offset; base_bitfield_channel = CR_CHAN(insn->chanspec); - for (j = 0; j < max_ports_per_bitfield; ++j) { - const unsigned port_offset = - ni_65xx_port_by_channel(base_bitfield_channel) + j; - const unsigned port = - sprivate(s)->base_port + port_offset; - unsigned base_port_channel; + for (port_offset = ni_65xx_port_by_channel(base_bitfield_channel); + port_offset <= last_port_offset; port_offset++) { + unsigned port = sprivate(s)->base_port + port_offset; + int base_port_channel = port_offset * ni_65xx_channels_per_port; unsigned port_mask, port_data, port_read_bits; - int bitshift; - if (port >= ni_65xx_total_num_ports(board)) + int bitshift = base_port_channel - base_bitfield_channel; + + if (bitshift >= 32) break; - base_port_channel = port_offset * ni_65xx_channels_per_port; port_mask = data[0]; port_data = data[1]; - bitshift = base_port_channel - base_bitfield_channel; - if (bitshift >= 32 || bitshift <= -32) - break; if (bitshift > 0) { port_mask >>= bitshift; port_data >>= bitshift; From a214339d764a07b99dc0418685d6cc8a0a1970d5 Mon Sep 17 00:00:00 2001 From: David Cohen Date: Tue, 1 Oct 2013 14:32:58 -0700 Subject: [PATCH 492/523] usb: chipidea: add Intel Clovertrail pci id Also clean up the last item of the pci id list to be "cleaner". Signed-off-by: David Cohen Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci_hdrc_pci.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/usb/chipidea/ci_hdrc_pci.c b/drivers/usb/chipidea/ci_hdrc_pci.c index 042320a6c6c7..d514332ac081 100644 --- a/drivers/usb/chipidea/ci_hdrc_pci.c +++ b/drivers/usb/chipidea/ci_hdrc_pci.c @@ -129,7 +129,12 @@ static DEFINE_PCI_DEVICE_TABLE(ci_hdrc_pci_id_table) = { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0829), .driver_data = (kernel_ulong_t)&penwell_pci_platdata, }, - { 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ } + { + /* Intel Clovertrail */ + PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xe006), + .driver_data = (kernel_ulong_t)&penwell_pci_platdata, + }, + { 0 } /* end: all zeroes */ }; MODULE_DEVICE_TABLE(pci, ci_hdrc_pci_id_table); From a9fbf4d591da6cd1d3eaab826c7c15f77fc8f6a3 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Tue, 1 Oct 2013 19:00:49 +0100 Subject: [PATCH 493/523] xen/hvc: allow xenboot console to be used again Commit d0380e6c3c0f6edb986d8798a23acfaf33d5df23 (early_printk: consolidate random copies of identical code) added in 3.10 introduced a check for con->index == -1 in early_console_register(). Initialize index to -1 for the xenboot console so earlyprintk=xen works again. Signed-off-by: David Vrabel Cc: Greg Kroah-Hartman Cc: Jiri Slaby Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/tty/hvc/hvc_xen.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c index e61c36cbb866..c193af6a628f 100644 --- a/drivers/tty/hvc/hvc_xen.c +++ b/drivers/tty/hvc/hvc_xen.c @@ -636,6 +636,7 @@ struct console xenboot_console = { .name = "xenboot", .write = xenboot_write_console, .flags = CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME, + .index = -1, }; #endif /* CONFIG_EARLY_PRINTK */ From edc530fe7ee5a562680615d2e7cd205879c751a7 Mon Sep 17 00:00:00 2001 From: Michael Grzeschik Date: Tue, 17 Sep 2013 15:56:06 +0200 Subject: [PATCH 494/523] dmaengine: imx-dma: fix slow path issue in prep_dma_cyclic When perparing cyclic_dma buffers by the sound layer, it will dump the following lockdep trace. The leading snd_pcm_action_single get called with read_lock_irq called. To fix this, we change the kcalloc call from GFP_KERNEL to GFP_ATOMIC. WARNING: at kernel/lockdep.c:2740 lockdep_trace_alloc+0xcc/0x114() DEBUG_LOCKS_WARN_ON(irqs_disabled_flags(flags)) Modules linked in: CPU: 0 PID: 832 Comm: aplay Not tainted 3.11.0-20130823+ #903 Backtrace: [] (dump_backtrace+0x0/0x10c) from [] (show_stack+0x18/0x1c) r6:c004c090 r5:00000009 r4:c2e0bd18 r3:00404000 [] (show_stack+0x0/0x1c) from [] (dump_stack+0x20/0x28) [] (dump_stack+0x0/0x28) from [] (warn_slowpath_common+0x54/0x70) [] (warn_slowpath_common+0x0/0x70) from [] (warn_slowpath_fmt+0x38/0x40) r8:00004000 r7:a3b90000 r6:000080d0 r5:60000093 r4:c2e0a000 r3:00000009 [] (warn_slowpath_fmt+0x0/0x40) from [] (lockdep_trace_alloc+0xcc/0x114) r3:c03955d8 r2:c03907db [] (lockdep_trace_alloc+0x0/0x114) from [] (__kmalloc+0x34/0x118) r6:000080d0 r5:c3800120 r4:000080d0 r3:c040a0f8 [] (__kmalloc+0x0/0x118) from [] (imxdma_prep_dma_cyclic+0x64/0x168) r7:a3b90000 r6:00000004 r5:c39d8420 r4:c3847150 [] (imxdma_prep_dma_cyclic+0x0/0x168) from [] (snd_dmaengine_pcm_trigger+0xa8/0x160) [] (snd_dmaengine_pcm_trigger+0x0/0x160) from [] (soc_pcm_trigger+0x90/0xb4) r8:c058c7b0 r7:c3b8140c r6:c39da560 r5:00000001 r4:c3b81000 [] (soc_pcm_trigger+0x0/0xb4) from [] (snd_pcm_do_start+0x2c/0x38) r7:00000000 r6:00000003 r5:c058c7b0 r4:c3b81000 [] (snd_pcm_do_start+0x0/0x38) from [] (snd_pcm_action_single+0x40/0x6c) [] (snd_pcm_action_single+0x0/0x6c) from [] (snd_pcm_action_lock_irq+0x7c/0x9c) r7:00000003 r6:c3b810f0 r5:c3b810f0 r4:c3b81000 [] (snd_pcm_action_lock_irq+0x0/0x9c) from [] (snd_pcm_common_ioctl1+0x7f8/0xfd0) r8:c3b7f888 r7:005407b8 r6:c2c991c0 r5:c3b81000 r4:c3b81000 r3:00004142 [] (snd_pcm_common_ioctl1+0x0/0xfd0) from [] (snd_pcm_playback_ioctl1+0x464/0x488) [] (snd_pcm_playback_ioctl1+0x0/0x488) from [] (snd_pcm_playback_ioctl+0x34/0x40) r8:c3b7f888 r7:00004142 r6:00000004 r5:c2c991c0 r4:005407b8 [] (snd_pcm_playback_ioctl+0x0/0x40) from [] (vfs_ioctl+0x30/0x44) [] (vfs_ioctl+0x0/0x44) from [] (do_vfs_ioctl+0x55c/0x5c0) [] (do_vfs_ioctl+0x0/0x5c0) from [] (SyS_ioctl+0x40/0x68) [] (SyS_ioctl+0x0/0x68) from [] (ret_fast_syscall+0x0/0x44) r8:c0009544 r7:00000036 r6:bedeaa58 r5:00000000 r4:000000c0 Signed-off-by: Michael Grzeschik Signed-off-by: Vinod Koul --- drivers/dma/imx-dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c index 78f8ca5fccee..442af6189cbc 100644 --- a/drivers/dma/imx-dma.c +++ b/drivers/dma/imx-dma.c @@ -883,7 +883,7 @@ static struct dma_async_tx_descriptor *imxdma_prep_dma_cyclic( kfree(imxdmac->sg_list); imxdmac->sg_list = kcalloc(periods + 1, - sizeof(struct scatterlist), GFP_KERNEL); + sizeof(struct scatterlist), GFP_ATOMIC); if (!imxdmac->sg_list) return NULL; From 5a276fa6bdf82fd442046969603968c83626ce0b Mon Sep 17 00:00:00 2001 From: Michael Grzeschik Date: Tue, 17 Sep 2013 15:56:07 +0200 Subject: [PATCH 495/523] dmaengine: imx-dma: fix lockdep issue between irqhandler and tasklet The tasklet and irqhandler are using spin_lock while other routines are using spin_lock_irqsave/restore. This leads to lockdep issues as described bellow. This patch is changing the code to use spinlock_irq_save/restore in both code pathes. As imxdma_xfer_desc always gets called with spin_lock_irqsave lock held, this patch also removes the spare call inside the routine to avoid double locking. [ 403.358162] ================================= [ 403.362549] [ INFO: inconsistent lock state ] [ 403.366945] 3.10.0-20130823+ #904 Not tainted [ 403.371331] --------------------------------- [ 403.375721] inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage. [ 403.381769] swapper/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 403.386762] (&(&imxdma->lock)->rlock){?.-...}, at: [] imxdma_tasklet+0x20/0x134 [ 403.395201] {IN-HARDIRQ-W} state was registered at: [ 403.400108] [] mark_lock+0x2a0/0x6b4 [ 403.404798] [] __lock_acquire+0x650/0x1a64 [ 403.410004] [] lock_acquire+0x94/0xa8 [ 403.414773] [] _raw_spin_lock+0x54/0x8c [ 403.419720] [] dma_irq_handler+0x78/0x254 [ 403.424845] [] handle_irq_event_percpu+0x38/0x1b4 [ 403.430670] [] handle_irq_event+0x44/0x64 [ 403.435789] [] handle_level_irq+0xd8/0xf0 [ 403.440903] [] generic_handle_irq+0x28/0x38 [ 403.446194] [] handle_IRQ+0x68/0x8c [ 403.450789] [] avic_handle_irq+0x3c/0x48 [ 403.455811] [] __irq_svc+0x44/0x74 [ 403.460314] [] cpu_startup_entry+0x88/0xf4 [ 403.465525] [] rest_init+0xb8/0xe0 [ 403.470045] [] start_kernel+0x28c/0x2d4 [ 403.474986] [] 0xa0008040 [ 403.478709] irq event stamp: 50854 [ 403.482140] hardirqs last enabled at (50854): [] tasklet_action+0x38/0xdc [ 403.489954] hardirqs last disabled at (50853): [] tasklet_action+0x20/0xdc [ 403.497761] softirqs last enabled at (50850): [] _local_bh_enable+0x14/0x18 [ 403.505741] softirqs last disabled at (50851): [] irq_exit+0x88/0xdc [ 403.513026] [ 403.513026] other info that might help us debug this: [ 403.519593] Possible unsafe locking scenario: [ 403.519593] [ 403.525548] CPU0 [ 403.528020] ---- [ 403.530491] lock(&(&imxdma->lock)->rlock); [ 403.534828] [ 403.537474] lock(&(&imxdma->lock)->rlock); [ 403.541983] [ 403.541983] *** DEADLOCK *** [ 403.541983] [ 403.547951] no locks held by swapper/0. [ 403.551813] [ 403.551813] stack backtrace: [ 403.556222] CPU: 0 PID: 0 Comm: swapper Not tainted 3.10.0-20130823+ #904 [ 403.563039] Backtrace: [ 403.565581] [] (dump_backtrace+0x0/0x10c) from [] (show_stack+0x18/0x1c) [ 403.574054] r6:00000000 r5:c05c51d8 r4:c040bd58 r3:00200000 [ 403.579872] [] (show_stack+0x0/0x1c) from [] (dump_stack+0x20/0x28) [ 403.587955] [] (dump_stack+0x0/0x28) from [] (print_usage_bug.part.28+0x224/0x28c) [ 403.597340] [] (print_usage_bug.part.28+0x0/0x28c) from [] (mark_lock+0x440/0x6b4) [ 403.606682] r8:c004a41c r7:00000000 r6:c040bd58 r5:c040c040 r4:00000002 [ 403.613566] [] (mark_lock+0x0/0x6b4) from [] (__lock_acquire+0x6cc/0x1a64) [ 403.622244] [] (__lock_acquire+0x0/0x1a64) from [] (lock_acquire+0x94/0xa8) [ 403.631010] [] (lock_acquire+0x0/0xa8) from [] (_raw_spin_lock+0x54/0x8c) [ 403.639614] [] (_raw_spin_lock+0x0/0x8c) from [] (imxdma_tasklet+0x20/0x134) [ 403.648434] r6:c3847010 r5:c040e890 r4:c38470d4 [ 403.653194] [] (imxdma_tasklet+0x0/0x134) from [] (tasklet_action+0x8c/0xdc) [ 403.662013] r8:c0599160 r7:00000000 r6:00000000 r5:c040e890 r4:c3847114 r3:c019d75c [ 403.670042] [] (tasklet_action+0x0/0xdc) from [] (__do_softirq+0xe4/0x1f0) [ 403.678687] r7:00000101 r6:c0402000 r5:c059919c r4:00000001 [ 403.684498] [] (__do_softirq+0x0/0x1f0) from [] (irq_exit+0x88/0xdc) [ 403.692652] [] (irq_exit+0x0/0xdc) from [] (handle_IRQ+0x6c/0x8c) [ 403.700514] r4:00000030 r3:00000110 [ 403.704192] [] (handle_IRQ+0x0/0x8c) from [] (avic_handle_irq+0x3c/0x48) [ 403.712664] r5:c0403f28 r4:c0593ebc [ 403.716343] [] (avic_handle_irq+0x0/0x48) from [] (__irq_svc+0x44/0x74) [ 403.724733] Exception stack(0xc0403f28 to 0xc0403f70) [ 403.729841] 3f20: 00000001 00000004 00000000 20000013 c0402000 c04104a8 [ 403.738078] 3f40: 00000002 c0b69620 a0004000 41069264 a03fb5f4 c0403f7c c0403f40 c0403f70 [ 403.746301] 3f60: c004b92c c0009e74 20000013 ffffffff [ 403.751383] r6:ffffffff r5:20000013 r4:c0009e74 r3:c004b92c [ 403.757210] [] (arch_cpu_idle+0x0/0x4c) from [] (cpu_startup_entry+0x88/0xf4) [ 403.766161] [] (cpu_startup_entry+0x0/0xf4) from [] (rest_init+0xb8/0xe0) [ 403.774753] [] (rest_init+0x0/0xe0) from [] (start_kernel+0x28c/0x2d4) [ 403.783051] r6:c03fc484 r5:ffffffff r4:c040a0e0 [ 403.787797] [] (start_kernel+0x0/0x2d4) from [] (0xa0008040) Signed-off-by: Michael Grzeschik Signed-off-by: Vinod Koul --- drivers/dma/imx-dma.c | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c index 442af6189cbc..247aa7cae37c 100644 --- a/drivers/dma/imx-dma.c +++ b/drivers/dma/imx-dma.c @@ -437,17 +437,18 @@ static void dma_irq_handle_channel(struct imxdma_channel *imxdmac) struct imxdma_engine *imxdma = imxdmac->imxdma; int chno = imxdmac->channel; struct imxdma_desc *desc; + unsigned long flags; - spin_lock(&imxdma->lock); + spin_lock_irqsave(&imxdma->lock, flags); if (list_empty(&imxdmac->ld_active)) { - spin_unlock(&imxdma->lock); + spin_unlock_irqrestore(&imxdma->lock, flags); goto out; } desc = list_first_entry(&imxdmac->ld_active, struct imxdma_desc, node); - spin_unlock(&imxdma->lock); + spin_unlock_irqrestore(&imxdma->lock, flags); if (desc->sg) { u32 tmp; @@ -519,7 +520,6 @@ static int imxdma_xfer_desc(struct imxdma_desc *d) { struct imxdma_channel *imxdmac = to_imxdma_chan(d->desc.chan); struct imxdma_engine *imxdma = imxdmac->imxdma; - unsigned long flags; int slot = -1; int i; @@ -527,7 +527,6 @@ static int imxdma_xfer_desc(struct imxdma_desc *d) switch (d->type) { case IMXDMA_DESC_INTERLEAVED: /* Try to get a free 2D slot */ - spin_lock_irqsave(&imxdma->lock, flags); for (i = 0; i < IMX_DMA_2D_SLOTS; i++) { if ((imxdma->slots_2d[i].count > 0) && ((imxdma->slots_2d[i].xsr != d->x) || @@ -537,10 +536,8 @@ static int imxdma_xfer_desc(struct imxdma_desc *d) slot = i; break; } - if (slot < 0) { - spin_unlock_irqrestore(&imxdma->lock, flags); + if (slot < 0) return -EBUSY; - } imxdma->slots_2d[slot].xsr = d->x; imxdma->slots_2d[slot].ysr = d->y; @@ -549,7 +546,6 @@ static int imxdma_xfer_desc(struct imxdma_desc *d) imxdmac->slot_2d = slot; imxdmac->enabled_2d = true; - spin_unlock_irqrestore(&imxdma->lock, flags); if (slot == IMX_DMA_2D_SLOT_A) { d->config_mem &= ~CCR_MSEL_B; @@ -625,8 +621,9 @@ static void imxdma_tasklet(unsigned long data) struct imxdma_channel *imxdmac = (void *)data; struct imxdma_engine *imxdma = imxdmac->imxdma; struct imxdma_desc *desc; + unsigned long flags; - spin_lock(&imxdma->lock); + spin_lock_irqsave(&imxdma->lock, flags); if (list_empty(&imxdmac->ld_active)) { /* Someone might have called terminate all */ @@ -663,7 +660,7 @@ static void imxdma_tasklet(unsigned long data) __func__, imxdmac->channel); } out: - spin_unlock(&imxdma->lock); + spin_unlock_irqrestore(&imxdma->lock, flags); } static int imxdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, From fcaaba6c7136fe47e5a13352f99a64b019b6d2c5 Mon Sep 17 00:00:00 2001 From: Michael Grzeschik Date: Tue, 17 Sep 2013 15:56:08 +0200 Subject: [PATCH 496/523] dmaengine: imx-dma: fix callback path in tasklet We need to free the ld_active list head before jumping into the callback routine. Otherwise the callback could run into issue_pending and change our ld_active list head we just going to free. This will run the channel list into an currupted and undefined state. Signed-off-by: Michael Grzeschik Signed-off-by: Vinod Koul --- drivers/dma/imx-dma.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c index 247aa7cae37c..55852c026791 100644 --- a/drivers/dma/imx-dma.c +++ b/drivers/dma/imx-dma.c @@ -627,13 +627,11 @@ static void imxdma_tasklet(unsigned long data) if (list_empty(&imxdmac->ld_active)) { /* Someone might have called terminate all */ - goto out; + spin_unlock_irqrestore(&imxdma->lock, flags); + return; } desc = list_first_entry(&imxdmac->ld_active, struct imxdma_desc, node); - if (desc->desc.callback) - desc->desc.callback(desc->desc.callback_param); - /* If we are dealing with a cyclic descriptor, keep it on ld_active * and dont mark the descriptor as complete. * Only in non-cyclic cases it would be marked as complete @@ -661,6 +659,10 @@ static void imxdma_tasklet(unsigned long data) } out: spin_unlock_irqrestore(&imxdma->lock, flags); + + if (desc->desc.callback) + desc->desc.callback(desc->desc.callback_param); + } static int imxdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, From 89c6c89af2ef41cb127c9694ef7783e585e96337 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Mon, 30 Sep 2013 09:37:03 +1000 Subject: [PATCH 497/523] xfs: lockdep needs to know about 3 dquot-deep nesting Michael Semon reported that xfs/299 generated this lockdep warning: ============================================= [ INFO: possible recursive locking detected ] 3.12.0-rc2+ #2 Not tainted --------------------------------------------- touch/21072 is trying to acquire lock: (&xfs_dquot_other_class){+.+...}, at: [] xfs_trans_dqlockedjoin+0x57/0x64 but task is already holding lock: (&xfs_dquot_other_class){+.+...}, at: [] xfs_trans_dqlockedjoin+0x57/0x64 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&xfs_dquot_other_class); lock(&xfs_dquot_other_class); *** DEADLOCK *** May be due to missing lock nesting notation 7 locks held by touch/21072: #0: (sb_writers#10){++++.+}, at: [] mnt_want_write+0x1e/0x3e #1: (&type->i_mutex_dir_key#4){+.+.+.}, at: [] do_last+0x245/0xe40 #2: (sb_internal#2){++++.+}, at: [] xfs_trans_alloc+0x1f/0x35 #3: (&(&ip->i_lock)->mr_lock/1){+.+...}, at: [] xfs_ilock+0x100/0x1f1 #4: (&(&ip->i_lock)->mr_lock){++++-.}, at: [] xfs_ilock_nowait+0x105/0x22f #5: (&dqp->q_qlock){+.+...}, at: [] xfs_trans_dqlockedjoin+0x57/0x64 #6: (&xfs_dquot_other_class){+.+...}, at: [] xfs_trans_dqlockedjoin+0x57/0x64 The lockdep annotation for dquot lock nesting only understands locking for user and "other" dquots, not user, group and quota dquots. Fix the annotations to match the locking heirarchy we now have. Reported-by: Michael L. Semon Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers (cherry picked from commit f112a049712a5c07de25d511c3c6587a2b1a015e) --- fs/xfs/xfs_dquot.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index 71520e6e5d65..1ee776d477c3 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -64,7 +64,8 @@ int xfs_dqerror_mod = 33; struct kmem_zone *xfs_qm_dqtrxzone; static struct kmem_zone *xfs_qm_dqzone; -static struct lock_class_key xfs_dquot_other_class; +static struct lock_class_key xfs_dquot_group_class; +static struct lock_class_key xfs_dquot_project_class; /* * This is called to free all the memory associated with a dquot @@ -703,8 +704,20 @@ xfs_qm_dqread( * Make sure group quotas have a different lock class than user * quotas. */ - if (!(type & XFS_DQ_USER)) - lockdep_set_class(&dqp->q_qlock, &xfs_dquot_other_class); + switch (type) { + case XFS_DQ_USER: + /* uses the default lock class */ + break; + case XFS_DQ_GROUP: + lockdep_set_class(&dqp->q_qlock, &xfs_dquot_group_class); + break; + case XFS_DQ_PROJ: + lockdep_set_class(&dqp->q_qlock, &xfs_dquot_project_class); + break; + default: + ASSERT(0); + break; + } XFS_STATS_INC(xs_qm_dquot); From 6d313498f035abc9d8ad3a1b3295f133bfab9638 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Mon, 30 Sep 2013 09:37:04 +1000 Subject: [PATCH 498/523] xfs: dirent dtype presence is dependent on directory magic numbers The determination of whether a directory entry contains a dtype field originally was dependent on the filesystem having CRCs enabled. This meant that the format for dtype beign enabled could be determined by checking the directory block magic number rather than doing a feature bit check. This was useful in that it meant that we didn't need to pass a struct xfs_mount around to functions that were already supplied with a directory block header. Unfortunately, the introduction of dtype fields into the v4 structure via a feature bit meant this "use the directory block magic number" method of discriminating the dirent entry sizes is broken. Hence we need to convert the places that use magic number checks to use feature bit checks so that they work correctly and not by chance. The current code works on v4 filesystems only because the dirent size roundup covers the extra byte needed by the dtype field in the places where this problem occurs. Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers (cherry picked from commit 367993e7c6428cb7617ab7653d61dca54e2fdede) --- fs/xfs/xfs_dir2_block.c | 6 ++--- fs/xfs/xfs_dir2_format.h | 51 +++++++++++++++------------------------ fs/xfs/xfs_dir2_readdir.c | 4 +-- fs/xfs/xfs_dir2_sf.c | 6 ++--- 4 files changed, 28 insertions(+), 39 deletions(-) diff --git a/fs/xfs/xfs_dir2_block.c b/fs/xfs/xfs_dir2_block.c index 0957aa98b6c0..12dad188939d 100644 --- a/fs/xfs/xfs_dir2_block.c +++ b/fs/xfs/xfs_dir2_block.c @@ -1158,7 +1158,7 @@ xfs_dir2_sf_to_block( /* * Create entry for . */ - dep = xfs_dir3_data_dot_entry_p(hdr); + dep = xfs_dir3_data_dot_entry_p(mp, hdr); dep->inumber = cpu_to_be64(dp->i_ino); dep->namelen = 1; dep->name[0] = '.'; @@ -1172,7 +1172,7 @@ xfs_dir2_sf_to_block( /* * Create entry for .. */ - dep = xfs_dir3_data_dotdot_entry_p(hdr); + dep = xfs_dir3_data_dotdot_entry_p(mp, hdr); dep->inumber = cpu_to_be64(xfs_dir2_sf_get_parent_ino(sfp)); dep->namelen = 2; dep->name[0] = dep->name[1] = '.'; @@ -1183,7 +1183,7 @@ xfs_dir2_sf_to_block( blp[1].hashval = cpu_to_be32(xfs_dir_hash_dotdot); blp[1].address = cpu_to_be32(xfs_dir2_byte_to_dataptr(mp, (char *)dep - (char *)hdr)); - offset = xfs_dir3_data_first_offset(hdr); + offset = xfs_dir3_data_first_offset(mp); /* * Loop over existing entries, stuff them in. */ diff --git a/fs/xfs/xfs_dir2_format.h b/fs/xfs/xfs_dir2_format.h index a0961a61ac1a..9cf67381adf6 100644 --- a/fs/xfs/xfs_dir2_format.h +++ b/fs/xfs/xfs_dir2_format.h @@ -497,69 +497,58 @@ xfs_dir3_data_unused_p(struct xfs_dir2_data_hdr *hdr) /* * Offsets of . and .. in data space (always block 0) * - * The macros are used for shortform directories as they have no headers to read - * the magic number out of. Shortform directories need to know the size of the - * data block header because the sfe embeds the block offset of the entry into - * it so that it doesn't change when format conversion occurs. Bad Things Happen - * if we don't follow this rule. - * * XXX: there is scope for significant optimisation of the logic here. Right * now we are checking for "dir3 format" over and over again. Ideally we should * only do it once for each operation. */ -#define XFS_DIR3_DATA_DOT_OFFSET(mp) \ - xfs_dir3_data_hdr_size(xfs_sb_version_hascrc(&(mp)->m_sb)) -#define XFS_DIR3_DATA_DOTDOT_OFFSET(mp) \ - (XFS_DIR3_DATA_DOT_OFFSET(mp) + xfs_dir3_data_entsize(mp, 1)) -#define XFS_DIR3_DATA_FIRST_OFFSET(mp) \ - (XFS_DIR3_DATA_DOTDOT_OFFSET(mp) + xfs_dir3_data_entsize(mp, 2)) - static inline xfs_dir2_data_aoff_t -xfs_dir3_data_dot_offset(struct xfs_dir2_data_hdr *hdr) +xfs_dir3_data_dot_offset(struct xfs_mount *mp) { - return xfs_dir3_data_entry_offset(hdr); + return xfs_dir3_data_hdr_size(xfs_sb_version_hascrc(&mp->m_sb)); } static inline xfs_dir2_data_aoff_t -xfs_dir3_data_dotdot_offset(struct xfs_dir2_data_hdr *hdr) +xfs_dir3_data_dotdot_offset(struct xfs_mount *mp) { - bool dir3 = hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC) || - hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC); - return xfs_dir3_data_dot_offset(hdr) + - __xfs_dir3_data_entsize(dir3, 1); + return xfs_dir3_data_dot_offset(mp) + + xfs_dir3_data_entsize(mp, 1); } static inline xfs_dir2_data_aoff_t -xfs_dir3_data_first_offset(struct xfs_dir2_data_hdr *hdr) +xfs_dir3_data_first_offset(struct xfs_mount *mp) { - bool dir3 = hdr->magic == cpu_to_be32(XFS_DIR3_DATA_MAGIC) || - hdr->magic == cpu_to_be32(XFS_DIR3_BLOCK_MAGIC); - return xfs_dir3_data_dotdot_offset(hdr) + - __xfs_dir3_data_entsize(dir3, 2); + return xfs_dir3_data_dotdot_offset(mp) + + xfs_dir3_data_entsize(mp, 2); } /* * location of . and .. in data space (always block 0) */ static inline struct xfs_dir2_data_entry * -xfs_dir3_data_dot_entry_p(struct xfs_dir2_data_hdr *hdr) +xfs_dir3_data_dot_entry_p( + struct xfs_mount *mp, + struct xfs_dir2_data_hdr *hdr) { return (struct xfs_dir2_data_entry *) - ((char *)hdr + xfs_dir3_data_dot_offset(hdr)); + ((char *)hdr + xfs_dir3_data_dot_offset(mp)); } static inline struct xfs_dir2_data_entry * -xfs_dir3_data_dotdot_entry_p(struct xfs_dir2_data_hdr *hdr) +xfs_dir3_data_dotdot_entry_p( + struct xfs_mount *mp, + struct xfs_dir2_data_hdr *hdr) { return (struct xfs_dir2_data_entry *) - ((char *)hdr + xfs_dir3_data_dotdot_offset(hdr)); + ((char *)hdr + xfs_dir3_data_dotdot_offset(mp)); } static inline struct xfs_dir2_data_entry * -xfs_dir3_data_first_entry_p(struct xfs_dir2_data_hdr *hdr) +xfs_dir3_data_first_entry_p( + struct xfs_mount *mp, + struct xfs_dir2_data_hdr *hdr) { return (struct xfs_dir2_data_entry *) - ((char *)hdr + xfs_dir3_data_first_offset(hdr)); + ((char *)hdr + xfs_dir3_data_first_offset(mp)); } /* diff --git a/fs/xfs/xfs_dir2_readdir.c b/fs/xfs/xfs_dir2_readdir.c index 8993ec17452c..8f84153e98a8 100644 --- a/fs/xfs/xfs_dir2_readdir.c +++ b/fs/xfs/xfs_dir2_readdir.c @@ -119,9 +119,9 @@ xfs_dir2_sf_getdents( * mp->m_dirdatablk. */ dot_offset = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk, - XFS_DIR3_DATA_DOT_OFFSET(mp)); + xfs_dir3_data_dot_offset(mp)); dotdot_offset = xfs_dir2_db_off_to_dataptr(mp, mp->m_dirdatablk, - XFS_DIR3_DATA_DOTDOT_OFFSET(mp)); + xfs_dir3_data_dotdot_offset(mp)); /* * Put . entry unless we're starting past it. diff --git a/fs/xfs/xfs_dir2_sf.c b/fs/xfs/xfs_dir2_sf.c index bb6e2848f473..3ef6d402084c 100644 --- a/fs/xfs/xfs_dir2_sf.c +++ b/fs/xfs/xfs_dir2_sf.c @@ -557,7 +557,7 @@ xfs_dir2_sf_addname_hard( * to insert the new entry. * If it's going to end up at the end then oldsfep will point there. */ - for (offset = XFS_DIR3_DATA_FIRST_OFFSET(mp), + for (offset = xfs_dir3_data_first_offset(mp), oldsfep = xfs_dir2_sf_firstentry(oldsfp), add_datasize = xfs_dir3_data_entsize(mp, args->namelen), eof = (char *)oldsfep == &buf[old_isize]; @@ -640,7 +640,7 @@ xfs_dir2_sf_addname_pick( sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; size = xfs_dir3_data_entsize(mp, args->namelen); - offset = XFS_DIR3_DATA_FIRST_OFFSET(mp); + offset = xfs_dir3_data_first_offset(mp); sfep = xfs_dir2_sf_firstentry(sfp); holefit = 0; /* @@ -713,7 +713,7 @@ xfs_dir2_sf_check( mp = dp->i_mount; sfp = (xfs_dir2_sf_hdr_t *)dp->i_df.if_u1.if_data; - offset = XFS_DIR3_DATA_FIRST_OFFSET(mp); + offset = xfs_dir3_data_first_offset(mp); ino = xfs_dir2_sf_get_parent_ino(sfp); i8count = ino > XFS_DIR2_MAX_SHORT_INUM; From 9b3b77fe661875f19ed748b67fb1eeb57d602b7e Mon Sep 17 00:00:00 2001 From: "tinguely@sgi.com" Date: Fri, 27 Sep 2013 09:00:55 -0500 Subject: [PATCH 499/523] xfs: fix memory leak in xlog_recover_add_to_trans Free the memory in error path of xlog_recover_add_to_trans(). Normally this memory is freed in recovery pass2, but is leaked in the error path. Signed-off-by: Mark Tinguely Reviewed-by: Eric Sandeen Signed-off-by: Ben Myers (cherry picked from commit 519ccb81ac1c8e3e4eed294acf93be00b43dcad6) --- fs/xfs/xfs_log_recover.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index cc179878fe41..43240583fd5b 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -1585,6 +1585,7 @@ xlog_recover_add_to_trans( "bad number of regions (%d) in inode log format", in_f->ilf_size); ASSERT(0); + free(ptr); return XFS_ERROR(EIO); } From b2a42f78ab475f4730300b0e9568bc3b2587d112 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Tue, 1 Oct 2013 16:47:53 +0200 Subject: [PATCH 500/523] xfs: Use kmem_free() instead of free() This fixes a build failure caused by calling the free() function which does not exist in the Linux kernel. Signed-off-by: Thierry Reding Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers (cherry picked from commit aaaae98022efa4f3c31042f1fdf9e7a0c5f04663) --- fs/xfs/xfs_log_recover.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 43240583fd5b..39797490a1f1 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -1585,7 +1585,7 @@ xlog_recover_add_to_trans( "bad number of regions (%d) in inode log format", in_f->ilf_size); ASSERT(0); - free(ptr); + kmem_free(ptr); return XFS_ERROR(EIO); } From 19e49834d22c2271ed1f4a03aaa4b74986447fb4 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 4 Oct 2013 12:54:11 -0700 Subject: [PATCH 501/523] selinux: remove 'flags' parameter from inode_has_perm Every single user passes in '0'. I think we had non-zero users back in some stone age when selinux_inode_permission() was implemented in terms of inode_has_perm(), but that complicated case got split up into a totally separate code-path so that we could optimize the much simpler special cases. See commit 2e33405785d3 ("SELinux: delay initialization of audit data in selinux_inode_permission") for example. Signed-off-by: Linus Torvalds --- security/selinux/hooks.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index a5091ec06aa6..967823212d7d 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -1525,8 +1525,7 @@ static int task_has_system(struct task_struct *tsk, static int inode_has_perm(const struct cred *cred, struct inode *inode, u32 perms, - struct common_audit_data *adp, - unsigned flags) + struct common_audit_data *adp) { struct inode_security_struct *isec; u32 sid; @@ -1539,7 +1538,7 @@ static int inode_has_perm(const struct cred *cred, sid = cred_sid(cred); isec = inode->i_security; - return avc_has_perm_flags(sid, isec->sid, isec->sclass, perms, adp, flags); + return avc_has_perm(sid, isec->sid, isec->sclass, perms, adp); } /* Same as inode_has_perm, but pass explicit audit data containing @@ -1554,7 +1553,7 @@ static inline int dentry_has_perm(const struct cred *cred, ad.type = LSM_AUDIT_DATA_DENTRY; ad.u.dentry = dentry; - return inode_has_perm(cred, inode, av, &ad, 0); + return inode_has_perm(cred, inode, av, &ad); } /* Same as inode_has_perm, but pass explicit audit data containing @@ -1569,7 +1568,7 @@ static inline int path_has_perm(const struct cred *cred, ad.type = LSM_AUDIT_DATA_PATH; ad.u.path = *path; - return inode_has_perm(cred, inode, av, &ad, 0); + return inode_has_perm(cred, inode, av, &ad); } /* Same as path_has_perm, but uses the inode from the file struct. */ @@ -1581,7 +1580,7 @@ static inline int file_path_has_perm(const struct cred *cred, ad.type = LSM_AUDIT_DATA_PATH; ad.u.path = file->f_path; - return inode_has_perm(cred, file_inode(file), av, &ad, 0); + return inode_has_perm(cred, file_inode(file), av, &ad); } /* Check whether a task can use an open file descriptor to @@ -1617,7 +1616,7 @@ static int file_has_perm(const struct cred *cred, /* av is zero if only checking access to the descriptor. */ rc = 0; if (av) - rc = inode_has_perm(cred, inode, av, &ad, 0); + rc = inode_has_perm(cred, inode, av, &ad); out: return rc; From 60e7cd3a4ba6049ef590921e84454e6cfd9e2589 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Mon, 30 Sep 2013 14:10:43 -0400 Subject: [PATCH 502/523] Btrfs: fix transid verify errors when recovering log tree If we crash with a log, remount and recover that log, and then crash before we can commit another transaction we will get transid verify errors on the next mount. This is because we were not zero'ing out the log when we committed the transaction after recovery. This is ok as long as we commit another transaction at some point in the future, but if you abort or something else goes wrong you can end up in this weird state because the recovery stuff says that the tree log should have a generation+1 of the super generation, which won't be the case of the transaction that was started for recovery. Fix this by removing the check and _always_ zero out the log portion of the super when we commit a transaction. This fixes the transid verify issues I was seeing with my force errors tests. Thanks, Signed-off-by: Josef Bacik --- fs/btrfs/transaction.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index e7a95356df83..8c81bdc1ef9b 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -1838,11 +1838,8 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, assert_qgroups_uptodate(trans); update_super_roots(root); - if (!root->fs_info->log_root_recovering) { - btrfs_set_super_log_root(root->fs_info->super_copy, 0); - btrfs_set_super_log_root_level(root->fs_info->super_copy, 0); - } - + btrfs_set_super_log_root(root->fs_info->super_copy, 0); + btrfs_set_super_log_root_level(root->fs_info->super_copy, 0); memcpy(root->fs_info->super_for_commit, root->fs_info->super_copy, sizeof(*root->fs_info->super_copy)); From 385fe0bede52a45cd960f30c7eb8d20ad8e1e05b Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Tue, 1 Oct 2013 23:49:49 +0800 Subject: [PATCH 503/523] Btrfs: fix crash of compressed writes The crash[1] is found by xfstests/generic/208 with "-o compress", it's not reproduced everytime, but it does panic. The bug is quite interesting, it's actually introduced by a recent commit (573aecafca1cf7a974231b759197a1aebcf39c2a, Btrfs: actually limit the size of delalloc range). Btrfs implements delay allocation, so during writeback, we (1) get a page A and lock it (2) search the state tree for delalloc bytes and lock all pages within the range (3) process the delalloc range, including find disk space and create ordered extent and so on. (4) submit the page A. It runs well in normal cases, but if we're in a racy case, eg. buffered compressed writes and aio-dio writes, sometimes we may fail to lock all pages in the 'delalloc' range, in which case, we need to fall back to search the state tree again with a smaller range limit(max_bytes = PAGE_CACHE_SIZE - offset). The mentioned commit has a side effect, that is, in the fallback case, we can find delalloc bytes before the index of the page we already have locked, so we're in the case of (delalloc_end <= *start) and return with (found > 0). This ends with not locking delalloc pages but making ->writepage still process them, and the crash happens. This fixes it by just thinking that we find nothing and returning to caller as the caller knows how to deal with it properly. [1]: ------------[ cut here ]------------ kernel BUG at mm/page-writeback.c:2170! [...] CPU: 2 PID: 11755 Comm: btrfs-delalloc- Tainted: G O 3.11.0+ #8 [...] RIP: 0010:[] [] clear_page_dirty_for_io+0x1e/0x83 [...] [ 4934.248731] Stack: [ 4934.248731] ffff8801477e5dc8 ffffea00049b9f00 ffff8801869f9ce8 ffffffffa02b841a [ 4934.248731] 0000000000000000 0000000000000000 0000000000000fff 0000000000000620 [ 4934.248731] ffff88018db59c78 ffffea0005da8d40 ffffffffa02ff860 00000001810016c0 [ 4934.248731] Call Trace: [ 4934.248731] [] extent_range_clear_dirty_for_io+0xcf/0xf5 [btrfs] [ 4934.248731] [] compress_file_range+0x1dc/0x4cb [btrfs] [ 4934.248731] [] ? detach_if_pending+0x22/0x4b [ 4934.248731] [] async_cow_start+0x35/0x53 [btrfs] [ 4934.248731] [] worker_loop+0x14b/0x48c [btrfs] [ 4934.248731] [] ? btrfs_queue_worker+0x25c/0x25c [btrfs] [ 4934.248731] [] kthread+0x8d/0x95 [ 4934.248731] [] ? kthread_freezable_should_stop+0x43/0x43 [ 4934.248731] [] ret_from_fork+0x7c/0xb0 [ 4934.248731] [] ? kthread_freezable_should_stop+0x43/0x43 [ 4934.248731] Code: ff 85 c0 0f 94 c0 0f b6 c0 59 5b 5d c3 0f 1f 44 00 00 55 48 89 e5 41 54 53 48 89 fb e8 2c de 00 00 49 89 c4 48 8b 03 a8 01 75 02 <0f> 0b 4d 85 e4 74 52 49 8b 84 24 80 00 00 00 f6 40 20 01 75 44 [ 4934.248731] RIP [] clear_page_dirty_for_io+0x1e/0x83 [ 4934.248731] RSP [ 4934.280307] ---[ end trace 36f06d3f8750236a ]--- Signed-off-by: Liu Bo Signed-off-by: Josef Bacik --- fs/btrfs/extent_io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index c09a40db53db..43feb4663f5b 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -1614,7 +1614,7 @@ again: *start = delalloc_start; *end = delalloc_end; free_extent_state(cached_state); - return found; + return 0; } /* From 964fb15acfcd672ac691f04879b71f07ccc21e0c Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Wed, 2 Oct 2013 19:39:50 +0300 Subject: [PATCH 504/523] Btrfs: eliminate races in worker stopping code The current implementation of worker threads in Btrfs has races in worker stopping code, which cause all kinds of panics and lockups when running btrfs/011 xfstest in a loop. The problem is that btrfs_stop_workers is unsynchronized with respect to check_idle_worker, check_busy_worker and __btrfs_start_workers. E.g., check_idle_worker race flow: btrfs_stop_workers(): check_idle_worker(aworker): - grabs the lock - splices the idle list into the working list - removes the first worker from the working list - releases the lock to wait for its kthread's completion - grabs the lock - if aworker is on the working list, moves aworker from the working list to the idle list - releases the lock - grabs the lock - puts the worker - removes the second worker from the working list ...... btrfs_stop_workers returns, aworker is on the idle list FS is umounted, memory is freed ...... aworker is waken up, fireworks ensue With this applied, I wasn't able to trigger the problem in 48 hours, whereas previously I could reliably reproduce at least one of these races within an hour. Reported-by: David Sterba Signed-off-by: Ilya Dryomov Signed-off-by: Josef Bacik --- fs/btrfs/async-thread.c | 25 +++++++++++++++++++------ fs/btrfs/async-thread.h | 2 ++ 2 files changed, 21 insertions(+), 6 deletions(-) diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c index 58b7d14b08ee..08cc08f037a6 100644 --- a/fs/btrfs/async-thread.c +++ b/fs/btrfs/async-thread.c @@ -107,7 +107,8 @@ static void check_idle_worker(struct btrfs_worker_thread *worker) worker->idle = 1; /* the list may be empty if the worker is just starting */ - if (!list_empty(&worker->worker_list)) { + if (!list_empty(&worker->worker_list) && + !worker->workers->stopping) { list_move(&worker->worker_list, &worker->workers->idle_list); } @@ -127,7 +128,8 @@ static void check_busy_worker(struct btrfs_worker_thread *worker) spin_lock_irqsave(&worker->workers->lock, flags); worker->idle = 0; - if (!list_empty(&worker->worker_list)) { + if (!list_empty(&worker->worker_list) && + !worker->workers->stopping) { list_move_tail(&worker->worker_list, &worker->workers->worker_list); } @@ -412,6 +414,7 @@ void btrfs_stop_workers(struct btrfs_workers *workers) int can_stop; spin_lock_irq(&workers->lock); + workers->stopping = 1; list_splice_init(&workers->idle_list, &workers->worker_list); while (!list_empty(&workers->worker_list)) { cur = workers->worker_list.next; @@ -455,6 +458,7 @@ void btrfs_init_workers(struct btrfs_workers *workers, char *name, int max, workers->ordered = 0; workers->atomic_start_pending = 0; workers->atomic_worker_start = async_helper; + workers->stopping = 0; } /* @@ -480,15 +484,19 @@ static int __btrfs_start_workers(struct btrfs_workers *workers) atomic_set(&worker->num_pending, 0); atomic_set(&worker->refs, 1); worker->workers = workers; - worker->task = kthread_run(worker_loop, worker, - "btrfs-%s-%d", workers->name, - workers->num_workers + 1); + worker->task = kthread_create(worker_loop, worker, + "btrfs-%s-%d", workers->name, + workers->num_workers + 1); if (IS_ERR(worker->task)) { ret = PTR_ERR(worker->task); - kfree(worker); goto fail; } + spin_lock_irq(&workers->lock); + if (workers->stopping) { + spin_unlock_irq(&workers->lock); + goto fail_kthread; + } list_add_tail(&worker->worker_list, &workers->idle_list); worker->idle = 1; workers->num_workers++; @@ -496,8 +504,13 @@ static int __btrfs_start_workers(struct btrfs_workers *workers) WARN_ON(workers->num_workers_starting < 0); spin_unlock_irq(&workers->lock); + wake_up_process(worker->task); return 0; + +fail_kthread: + kthread_stop(worker->task); fail: + kfree(worker); spin_lock_irq(&workers->lock); workers->num_workers_starting--; spin_unlock_irq(&workers->lock); diff --git a/fs/btrfs/async-thread.h b/fs/btrfs/async-thread.h index 063698b90ce2..1f26792683ed 100644 --- a/fs/btrfs/async-thread.h +++ b/fs/btrfs/async-thread.h @@ -107,6 +107,8 @@ struct btrfs_workers { /* extra name for this worker, used for current->name */ char *name; + + int stopping; }; void btrfs_queue_worker(struct btrfs_workers *workers, struct btrfs_work *work); From 1357272fc7deeebb7b3c5d1a071562edc273cdaf Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Wed, 2 Oct 2013 20:41:01 +0300 Subject: [PATCH 505/523] Btrfs: fix a use-after-free bug in btrfs_dev_replace_finishing free_device rcu callback, scheduled from btrfs_rm_dev_replace_srcdev, can be processed before btrfs_scratch_superblock is called, which would result in a use-after-free on btrfs_device contents. Fix this by zeroing the superblock before the rcu callback is registered. Cc: Stefan Behrens Signed-off-by: Ilya Dryomov Signed-off-by: Josef Bacik --- fs/btrfs/dev-replace.c | 5 +---- fs/btrfs/volumes.c | 7 ++++++- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c index 5d844438b2d4..2a9bd5bd24c3 100644 --- a/fs/btrfs/dev-replace.c +++ b/fs/btrfs/dev-replace.c @@ -535,10 +535,7 @@ static int btrfs_dev_replace_finishing(struct btrfs_fs_info *fs_info, list_add(&tgt_device->dev_alloc_list, &fs_info->fs_devices->alloc_list); btrfs_rm_dev_replace_srcdev(fs_info, src_device); - if (src_device->bdev) { - /* zero out the old super */ - btrfs_scratch_superblock(src_device); - } + /* * this is again a consistent state where no dev_replace procedure * is running, the target device is part of the filesystem, the diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 043114749516..b0203b1322ac 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1716,6 +1716,7 @@ void btrfs_rm_dev_replace_srcdev(struct btrfs_fs_info *fs_info, struct btrfs_device *srcdev) { WARN_ON(!mutex_is_locked(&fs_info->fs_devices->device_list_mutex)); + list_del_rcu(&srcdev->dev_list); list_del_rcu(&srcdev->dev_alloc_list); fs_info->fs_devices->num_devices--; @@ -1725,9 +1726,13 @@ void btrfs_rm_dev_replace_srcdev(struct btrfs_fs_info *fs_info, } if (srcdev->can_discard) fs_info->fs_devices->num_can_discard--; - if (srcdev->bdev) + if (srcdev->bdev) { fs_info->fs_devices->open_devices--; + /* zero out the old super */ + btrfs_scratch_superblock(srcdev); + } + call_rcu(&srcdev->rcu, free_device); } From cb4fbe5703be51f8a2dff4052b1901941ab99e12 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 4 Oct 2013 12:57:22 -0700 Subject: [PATCH 506/523] selinux: avc_has_perm_flags has no more users .. so get rid of it. The only indirect users were all the avc_has_perm() callers which just expanded to have a zero flags argument. Signed-off-by: Linus Torvalds --- security/selinux/avc.c | 9 +++------ security/selinux/include/avc.h | 14 +++----------- 2 files changed, 6 insertions(+), 17 deletions(-) diff --git a/security/selinux/avc.c b/security/selinux/avc.c index dad36a6ab45f..e720f72fcb87 100644 --- a/security/selinux/avc.c +++ b/security/selinux/avc.c @@ -746,7 +746,6 @@ inline int avc_has_perm_noaudit(u32 ssid, u32 tsid, * @tclass: target security class * @requested: requested permissions, interpreted based on @tclass * @auditdata: auxiliary audit data - * @flags: VFS walk flags * * Check the AVC to determine whether the @requested permissions are granted * for the SID pair (@ssid, @tsid), interpreting the permissions @@ -756,17 +755,15 @@ inline int avc_has_perm_noaudit(u32 ssid, u32 tsid, * permissions are granted, -%EACCES if any permissions are denied, or * another -errno upon other errors. */ -int avc_has_perm_flags(u32 ssid, u32 tsid, u16 tclass, - u32 requested, struct common_audit_data *auditdata, - unsigned flags) +int avc_has_perm(u32 ssid, u32 tsid, u16 tclass, + u32 requested, struct common_audit_data *auditdata) { struct av_decision avd; int rc, rc2; rc = avc_has_perm_noaudit(ssid, tsid, tclass, requested, 0, &avd); - rc2 = avc_audit(ssid, tsid, tclass, requested, &avd, rc, auditdata, - flags); + rc2 = avc_audit(ssid, tsid, tclass, requested, &avd, rc, auditdata, 0); if (rc2) return rc2; return rc; diff --git a/security/selinux/include/avc.h b/security/selinux/include/avc.h index 92d0ab561db8..e30657b59cb3 100644 --- a/security/selinux/include/avc.h +++ b/security/selinux/include/avc.h @@ -147,17 +147,9 @@ int avc_has_perm_noaudit(u32 ssid, u32 tsid, unsigned flags, struct av_decision *avd); -int avc_has_perm_flags(u32 ssid, u32 tsid, - u16 tclass, u32 requested, - struct common_audit_data *auditdata, - unsigned); - -static inline int avc_has_perm(u32 ssid, u32 tsid, - u16 tclass, u32 requested, - struct common_audit_data *auditdata) -{ - return avc_has_perm_flags(ssid, tsid, tclass, requested, auditdata, 0); -} +int avc_has_perm(u32 ssid, u32 tsid, + u16 tclass, u32 requested, + struct common_audit_data *auditdata); u32 avc_policy_seqno(void); From ab3540626435c01e08fe58ce544311a78430f112 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 4 Oct 2013 14:05:38 -0700 Subject: [PATCH 507/523] selinux: remove 'flags' parameter from avc_audit() Now avc_audit() has no more users with that parameter. Remove it. Signed-off-by: Linus Torvalds --- security/selinux/avc.c | 2 +- security/selinux/hooks.c | 2 +- security/selinux/include/avc.h | 4 ++-- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/security/selinux/avc.c b/security/selinux/avc.c index e720f72fcb87..fc3e6628a864 100644 --- a/security/selinux/avc.c +++ b/security/selinux/avc.c @@ -763,7 +763,7 @@ int avc_has_perm(u32 ssid, u32 tsid, u16 tclass, rc = avc_has_perm_noaudit(ssid, tsid, tclass, requested, 0, &avd); - rc2 = avc_audit(ssid, tsid, tclass, requested, &avd, rc, auditdata, 0); + rc2 = avc_audit(ssid, tsid, tclass, requested, &avd, rc, auditdata); if (rc2) return rc2; return rc; diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 967823212d7d..5b5231068516 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -1502,7 +1502,7 @@ static int cred_has_capability(const struct cred *cred, rc = avc_has_perm_noaudit(sid, sid, sclass, av, 0, &avd); if (audit == SECURITY_CAP_AUDIT) { - int rc2 = avc_audit(sid, sid, sclass, av, &avd, rc, &ad, 0); + int rc2 = avc_audit(sid, sid, sclass, av, &avd, rc, &ad); if (rc2) return rc2; } diff --git a/security/selinux/include/avc.h b/security/selinux/include/avc.h index e30657b59cb3..f53ee3c58d0f 100644 --- a/security/selinux/include/avc.h +++ b/security/selinux/include/avc.h @@ -130,7 +130,7 @@ static inline int avc_audit(u32 ssid, u32 tsid, u16 tclass, u32 requested, struct av_decision *avd, int result, - struct common_audit_data *a, unsigned flags) + struct common_audit_data *a) { u32 audited, denied; audited = avc_audit_required(requested, avd, result, 0, &denied); @@ -138,7 +138,7 @@ static inline int avc_audit(u32 ssid, u32 tsid, return 0; return slow_avc_audit(ssid, tsid, tclass, requested, audited, denied, - a, flags); + a, 0); } #define AVC_STRICT 1 /* Ignore permissive mode. */ From 67d470e0e1711ca4a4c3a0e5524e0d580654053e Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Fri, 4 Oct 2013 16:14:30 -0600 Subject: [PATCH 508/523] Revert "x86/PCI: MMCONFIG: Check earlier for MMCONFIG region at address zero" This reverts commit 07f9b61c3915e8eb156cb4461b3946736356ad02. 07f9b61c was intended to be a cleanup that didn't change anything, but in fact, for systems without _CBA (which is almost everything), it broke extended config space for domain 0 and all config space for other domains. Reference: http://lkml.kernel.org/r/20131004011806.GE20450@dangermouse.emea.sgi.com Reported-by: Hedi Berriche Signed-off-by: Bjorn Helgaas --- arch/x86/pci/mmconfig-shared.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c index 5596c7bdd327..082e88129712 100644 --- a/arch/x86/pci/mmconfig-shared.c +++ b/arch/x86/pci/mmconfig-shared.c @@ -700,7 +700,7 @@ int pci_mmconfig_insert(struct device *dev, u16 seg, u8 start, u8 end, if (!(pci_probe & PCI_PROBE_MMCONF) || pci_mmcfg_arch_init_failed) return -ENODEV; - if (start > end || !addr) + if (start > end) return -EINVAL; mutex_lock(&pci_mmcfg_lock); @@ -716,6 +716,11 @@ int pci_mmconfig_insert(struct device *dev, u16 seg, u8 start, u8 end, return -EEXIST; } + if (!addr) { + mutex_unlock(&pci_mmcfg_lock); + return -EINVAL; + } + rc = -EBUSY; cfg = pci_mmconfig_alloc(seg, start, end, addr); if (cfg == NULL) { From b208c2f7ceafacbc44f13d1b5a9fbada98226183 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Thu, 19 Sep 2013 20:37:07 -0700 Subject: [PATCH 509/523] btrfs: Fix crash due to not allocating integrity data for a bioset When btrfs creates a bioset, we must also allocate the integrity data pool. Otherwise btrfs will crash when it tries to submit a bio to a checksumming disk: BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 IP: [] mempool_alloc+0x4a/0x150 PGD 2305e4067 PUD 23063d067 PMD 0 Oops: 0000 [#1] PREEMPT SMP Modules linked in: btrfs scsi_debug xfs ext4 jbd2 ext3 jbd mbcache sch_fq_codel eeprom lpc_ich mfd_core nfsd exportfs auth_rpcgss af_packet raid6_pq xor zlib_deflate libcrc32c [last unloaded: scsi_debug] CPU: 1 PID: 4486 Comm: mount Not tainted 3.12.0-rc1-mcsum #2 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 task: ffff8802451c9720 ti: ffff880230698000 task.ti: ffff880230698000 RIP: 0010:[] [] mempool_alloc+0x4a/0x150 RSP: 0018:ffff880230699688 EFLAGS: 00010286 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 00000000005f8445 RDX: 0000000000000001 RSI: 0000000000000010 RDI: 0000000000000000 RBP: ffff8802306996f8 R08: 0000000000011200 R09: 0000000000000008 R10: 0000000000000020 R11: ffff88009d6e8000 R12: 0000000000011210 R13: 0000000000000030 R14: ffff8802306996b8 R15: ffff8802451c9720 FS: 00007f25b8a16800(0000) GS:ffff88024fc80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000018 CR3: 0000000230576000 CR4: 00000000000007e0 Stack: ffff8802451c9720 0000000000000002 ffffffff81a97100 0000000000281250 ffffffff81a96480 ffff88024fc99150 ffff880228d18200 0000000000000000 0000000000000000 0000000000000040 ffff880230e8c2e8 ffff8802459dc900 Call Trace: [] bio_integrity_alloc+0x48/0x1b0 [] bio_integrity_prep+0xac/0x360 [] ? mempool_alloc+0x58/0x150 [] ? alloc_extent_state+0x31/0x110 [btrfs] [] blk_queue_bio+0x1c9/0x460 [] generic_make_request+0xca/0x100 [] submit_bio+0x79/0x160 [] btrfs_map_bio+0x48e/0x5b0 [btrfs] [] btree_submit_bio_hook+0xda/0x110 [btrfs] [] submit_one_bio+0x6a/0xa0 [btrfs] [] read_extent_buffer_pages+0x250/0x310 [btrfs] [] ? __radix_tree_preload+0x66/0xf0 [] ? radix_tree_insert+0x95/0x260 [] btree_read_extent_buffer_pages.constprop.128+0xb6/0x120 [btrfs] [] read_tree_block+0x3a/0x60 [btrfs] [] open_ctree+0x139d/0x2030 [btrfs] [] btrfs_mount+0x53a/0x7d0 [btrfs] [] ? pcpu_alloc+0x8eb/0x9f0 [] ? __kmalloc_track_caller+0x35/0x1e0 [] mount_fs+0x20/0xd0 [] vfs_kern_mount+0x76/0x120 [] do_mount+0x200/0xa40 [] ? strndup_user+0x5b/0x80 [] SyS_mount+0x90/0xe0 [] system_call_fastpath+0x1a/0x1f Code: 4c 8d 75 a8 4c 89 6d e8 45 89 e0 4c 8d 6f 30 48 89 5d d8 41 83 e0 af 48 89 fb 49 83 c6 18 4c 89 7d f8 65 4c 8b 3c 25 c0 b8 00 00 <48> 8b 73 18 44 89 c7 44 89 45 98 ff 53 20 48 85 c0 48 89 c2 74 RIP [] mempool_alloc+0x4a/0x150 RSP CR2: 0000000000000018 ---[ end trace 7a96042017ed21e2 ]--- Signed-off-by: Darrick J. Wong Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/extent_io.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 43feb4663f5b..22bda32acb89 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -145,8 +145,16 @@ int __init extent_io_init(void) offsetof(struct btrfs_io_bio, bio)); if (!btrfs_bioset) goto free_buffer_cache; + + if (bioset_integrity_create(btrfs_bioset, BIO_POOL_SIZE)) + goto free_bioset; + return 0; +free_bioset: + bioset_free(btrfs_bioset); + btrfs_bioset = NULL; + free_buffer_cache: kmem_cache_destroy(extent_buffer_cache); extent_buffer_cache = NULL; From 2433c8f094a008895e66f25bd1773cdb01c91d01 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sat, 5 Oct 2013 13:15:30 -0700 Subject: [PATCH 510/523] net: Update the sysctl permissions handler to test effective uid/gid Modify the code to use current_euid(), and in_egroup_p, as in done in fs/proc/proc_sysctl.c:test_perm() Cc: stable@vger.kernel.org Reviewed-by: Eric Sandeen Reported-by: Eric Sandeen Signed-off-by: "Eric W. Biederman" Signed-off-by: Linus Torvalds --- net/sysctl_net.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/sysctl_net.c b/net/sysctl_net.c index 9bc6db04be3e..e7000be321b0 100644 --- a/net/sysctl_net.c +++ b/net/sysctl_net.c @@ -47,12 +47,12 @@ static int net_ctl_permissions(struct ctl_table_header *head, /* Allow network administrator to have same access as root. */ if (ns_capable(net->user_ns, CAP_NET_ADMIN) || - uid_eq(root_uid, current_uid())) { + uid_eq(root_uid, current_euid())) { int mode = (table->mode >> 6) & 7; return (mode << 6) | (mode << 3) | mode; } /* Allow netns root group to have the same access as the root group */ - if (gid_eq(root_gid, current_gid())) { + if (in_egroup_p(root_gid)) { int mode = (table->mode >> 3) & 7; return (mode << 3) | mode; } From d0e639c9e06d44e713170031fe05fb60ebe680af Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 6 Oct 2013 14:00:20 -0700 Subject: [PATCH 511/523] Linux 3.12-rc4 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 2ae108d4f2af..9de9aba21bf9 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 12 SUBLEVEL = 0 -EXTRAVERSION = -rc3 +EXTRAVERSION = -rc4 NAME = One Giant Leap for Frogkind # *DOCUMENTATION* From 15c9887e15e874f3c15342a897577e914a781738 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Wed, 9 Oct 2013 11:19:18 +0200 Subject: [PATCH 512/523] ARM: OMAP2+: pdata-quirks: add legacy display init for IGEPv2 board IGEPv2 board has both an DVI and TFP410 video interfaces but DSS support for DeviceTree has not yet landed in mainline so is necessary to init the displays using legacy platform code. Signed-off-by: Javier Martinez Canillas Acked-by: Tomi Valkeinen Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/dss-common.c | 44 ++++++++++++++++++++++++++++++ arch/arm/mach-omap2/dss-common.h | 1 + arch/arm/mach-omap2/pdata-quirks.c | 6 ++++ 3 files changed, 51 insertions(+) diff --git a/arch/arm/mach-omap2/dss-common.c b/arch/arm/mach-omap2/dss-common.c index bf89effa4c99..365bfd3d9c68 100644 --- a/arch/arm/mach-omap2/dss-common.c +++ b/arch/arm/mach-omap2/dss-common.c @@ -213,3 +213,47 @@ void __init omap_4430sdp_display_init_of(void) platform_device_register(&sdp4430_tpd_device); platform_device_register(&sdp4430_hdmi_connector_device); } + + +/* OMAP3 IGEPv2 data */ + +#define IGEP2_DVI_TFP410_POWER_DOWN_GPIO 170 + +/* DVI Connector */ +static struct connector_dvi_platform_data omap3_igep2_dvi_connector_pdata = { + .name = "dvi", + .source = "tfp410.0", + .i2c_bus_num = 3, +}; + +static struct platform_device omap3_igep2_dvi_connector_device = { + .name = "connector-dvi", + .id = 0, + .dev.platform_data = &omap3_igep2_dvi_connector_pdata, +}; + +/* TFP410 DPI-to-DVI chip */ +static struct encoder_tfp410_platform_data omap3_igep2_tfp410_pdata = { + .name = "tfp410.0", + .source = "dpi.0", + .data_lines = 24, + .power_down_gpio = IGEP2_DVI_TFP410_POWER_DOWN_GPIO, +}; + +static struct platform_device omap3_igep2_tfp410_device = { + .name = "tfp410", + .id = 0, + .dev.platform_data = &omap3_igep2_tfp410_pdata, +}; + +static struct omap_dss_board_info igep2_dss_data = { + .default_display_name = "dvi", +}; + +void __init omap3_igep2_display_init_of(void) +{ + omap_display_init(&igep2_dss_data); + + platform_device_register(&omap3_igep2_tfp410_device); + platform_device_register(&omap3_igep2_dvi_connector_device); +} diff --git a/arch/arm/mach-omap2/dss-common.h b/arch/arm/mach-omap2/dss-common.h index c28fe3c03588..a9becf0d5be8 100644 --- a/arch/arm/mach-omap2/dss-common.h +++ b/arch/arm/mach-omap2/dss-common.h @@ -8,5 +8,6 @@ void __init omap4_panda_display_init_of(void); void __init omap_4430sdp_display_init_of(void); +void __init omap3_igep2_display_init_of(void); #endif diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index 3d472dbb9205..9113e7037ae5 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -74,6 +74,11 @@ static void __init hsmmc2_internal_input_clk(void) reg |= OMAP2_MMCSDIO2ADPCLKISEL; omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1); } + +static void __init omap3_igep0020_legacy_init(void) +{ + omap3_igep2_display_init_of(); +} #endif /* CONFIG_ARCH_OMAP3 */ #ifdef CONFIG_ARCH_OMAP4 @@ -103,6 +108,7 @@ static struct pdata_init pdata_quirks[] __initdata = { #ifdef CONFIG_ARCH_OMAP3 { "nokia,omap3-n9", hsmmc2_internal_input_clk, }, { "nokia,omap3-n950", hsmmc2_internal_input_clk, }, + { "isee,omap3-igep0020", omap3_igep0020_legacy_init, }, #endif #ifdef CONFIG_ARCH_OMAP4 { "ti,omap4-sdp", omap4_sdp_legacy_init, }, From 68a531a1dec12708817552dad4eefc5968dd333f Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Wed, 9 Oct 2013 11:19:19 +0200 Subject: [PATCH 513/523] ARM: OMAP2+: igep0020: use display init from dss-common Now that display information and setup is made from dss-common there is no need to have this code in the board file. Signed-off-by: Javier Martinez Canillas Acked-by: Tomi Valkeinen Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/board-igep0020.c | 41 ++-------------------------- 1 file changed, 3 insertions(+), 38 deletions(-) diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c index 06dbb2d3d38b..d648d50d9d24 100644 --- a/arch/arm/mach-omap2/board-igep0020.c +++ b/arch/arm/mach-omap2/board-igep0020.c @@ -43,6 +43,7 @@ #include "board-flash.h" #include "control.h" #include "gpmc-onenand.h" +#include "dss-common.h" #define IGEP2_SMSC911X_CS 5 #define IGEP2_SMSC911X_GPIO 176 @@ -50,7 +51,6 @@ #define IGEP2_GPIO_LED0_GREEN 26 #define IGEP2_GPIO_LED0_RED 27 #define IGEP2_GPIO_LED1_RED 28 -#define IGEP2_GPIO_DVI_PUP 170 #define IGEP2_RB_GPIO_WIFI_NPD 94 #define IGEP2_RB_GPIO_WIFI_NRESET 95 @@ -429,41 +429,6 @@ static struct twl4030_gpio_platform_data igep_twl4030_gpio_pdata = { .setup = igep_twl_gpio_setup, }; -static struct connector_dvi_platform_data omap3stalker_dvi_connector_pdata = { - .name = "dvi", - .source = "tfp410.0", - .i2c_bus_num = 3, -}; - -static struct platform_device omap3stalker_dvi_connector_device = { - .name = "connector-dvi", - .id = 0, - .dev.platform_data = &omap3stalker_dvi_connector_pdata, -}; - -static struct encoder_tfp410_platform_data omap3stalker_tfp410_pdata = { - .name = "tfp410.0", - .source = "dpi.0", - .data_lines = 24, - .power_down_gpio = IGEP2_GPIO_DVI_PUP, -}; - -static struct platform_device omap3stalker_tfp410_device = { - .name = "tfp410", - .id = 0, - .dev.platform_data = &omap3stalker_tfp410_pdata, -}; - -static struct omap_dss_board_info igep2_dss_data = { - .default_display_name = "dvi", -}; - -static struct platform_device *igep_devices[] __initdata = { - &igep_vwlan_device, - &omap3stalker_tfp410_device, - &omap3stalker_dvi_connector_device, -}; - static int igep2_keymap[] = { KEY(0, 0, KEY_LEFT), KEY(0, 1, KEY_RIGHT), @@ -663,7 +628,8 @@ static void __init igep_init(void) /* Register I2C busses and drivers */ igep_i2c_init(); - platform_add_devices(igep_devices, ARRAY_SIZE(igep_devices)); + platform_device_register(&igep_vwlan_device); + omap3_igep2_display_init_of(); omap_serial_init(); omap_sdrc_init(m65kxxxxam_sdrc_params, m65kxxxxam_sdrc_params); @@ -681,7 +647,6 @@ static void __init igep_init(void) igep_wlan_bt_init(); if (machine_is_igep0020()) { - omap_display_init(&igep2_dss_data); igep2_init_smsc911x(); usbhs_init_phys(igep2_phy_data, ARRAY_SIZE(igep2_phy_data)); usbhs_init(&igep2_usbhs_bdata); From 02e483f66deb6bd8df6af450726574614eb53be3 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Wed, 2 Oct 2013 21:39:39 -0700 Subject: [PATCH 514/523] pinctrl: single: Prepare for supporting SoC specific features Let's replace is_pinconf with flags and add struct pcs_soc_data so we can support SoC specific features like pin wake-up events. Done in collaboration with Roger Quadros . Cc: Peter Ujfalusi Cc: Grygorii Strashko Cc: Prakash Manjunathappa Cc: linux-kernel@vger.kernel.org Acked-by: Linus Walleij Acked-by: Haojian Zhuang Reviewed-by: Kevin Hilman Tested-by: Kevin Hilman Signed-off-by: Roger Quadros Signed-off-by: Tony Lindgren --- drivers/pinctrl/pinctrl-single.c | 38 ++++++++++++++++++++++++-------- 1 file changed, 29 insertions(+), 9 deletions(-) diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c index a82ace4d9a20..f88d3d1b2b99 100644 --- a/drivers/pinctrl/pinctrl-single.c +++ b/drivers/pinctrl/pinctrl-single.c @@ -149,6 +149,14 @@ struct pcs_name { char name[PCS_REG_NAME_LEN]; }; +/** + * struct pcs_soc_data - SoC specific settings + * @flags: initial SoC specific PCS_FEAT_xxx values + */ +struct pcs_soc_data { + unsigned flags; +}; + /** * struct pcs_device - pinctrl device instance * @res: resources @@ -156,13 +164,13 @@ struct pcs_name { * @size: size of the ioremapped area * @dev: device entry * @pctl: pin controller device + * @flags: mask of PCS_FEAT_xxx values * @mutex: mutex protecting the lists * @width: bits per mux register * @fmask: function register mask * @fshift: function register shift * @foff: value to turn mux off * @fmax: max number of functions in fmask - * @is_pinconf: whether supports pinconf * @bits_per_pin:number of bits per pin * @names: array of register names for pins * @pins: physical pins on the SoC @@ -183,6 +191,8 @@ struct pcs_device { unsigned size; struct device *dev; struct pinctrl_dev *pctl; + unsigned flags; +#define PCS_FEAT_PINCONF (1 << 0) struct mutex mutex; unsigned width; unsigned fmask; @@ -190,7 +200,6 @@ struct pcs_device { unsigned foff; unsigned fmax; bool bits_per_mux; - bool is_pinconf; unsigned bits_per_pin; struct pcs_name *names; struct pcs_data pins; @@ -206,6 +215,8 @@ struct pcs_device { void (*write)(unsigned val, void __iomem *reg); }; +#define PCS_HAS_PINCONF (pcs->flags & PCS_FEAT_PINCONF) + static int pcs_pinconf_get(struct pinctrl_dev *pctldev, unsigned pin, unsigned long *config); static int pcs_pinconf_set(struct pinctrl_dev *pctldev, unsigned pin, @@ -1060,7 +1071,7 @@ static int pcs_parse_pinconf(struct pcs_device *pcs, struct device_node *np, }; /* If pinconf isn't supported, don't parse properties in below. */ - if (!pcs->is_pinconf) + if (!PCS_HAS_PINCONF) return 0; /* cacluate how much properties are supported in current node */ @@ -1184,7 +1195,7 @@ static int pcs_parse_one_pinctrl_entry(struct pcs_device *pcs, (*map)->data.mux.group = np->name; (*map)->data.mux.function = np->name; - if (pcs->is_pinconf) { + if (PCS_HAS_PINCONF) { res = pcs_parse_pinconf(pcs, np, function, map); if (res) goto free_pingroups; @@ -1305,7 +1316,7 @@ static int pcs_parse_bits_in_pinctrl_entry(struct pcs_device *pcs, (*map)->data.mux.group = np->name; (*map)->data.mux.function = np->name; - if (pcs->is_pinconf) { + if (PCS_HAS_PINCONF) { dev_err(pcs->dev, "pinconf not supported\n"); goto free_pingroups; } @@ -1525,6 +1536,7 @@ static int pcs_probe(struct platform_device *pdev) const struct of_device_id *match; struct resource *res; struct pcs_device *pcs; + const struct pcs_soc_data *soc; int ret; match = of_match_device(pcs_of_match, &pdev->dev); @@ -1541,7 +1553,8 @@ static int pcs_probe(struct platform_device *pdev) INIT_LIST_HEAD(&pcs->pingroups); INIT_LIST_HEAD(&pcs->functions); INIT_LIST_HEAD(&pcs->gpiofuncs); - pcs->is_pinconf = match->data; + soc = match->data; + pcs->flags = soc->flags; PCS_GET_PROP_U32("pinctrl-single,register-width", &pcs->width, "register width not specified\n"); @@ -1610,7 +1623,7 @@ static int pcs_probe(struct platform_device *pdev) pcs->desc.name = DRIVER_NAME; pcs->desc.pctlops = &pcs_pinctrl_ops; pcs->desc.pmxops = &pcs_pinmux_ops; - if (pcs->is_pinconf) + if (PCS_HAS_PINCONF) pcs->desc.confops = &pcs_pinconf_ops; pcs->desc.owner = THIS_MODULE; @@ -1652,9 +1665,16 @@ static int pcs_remove(struct platform_device *pdev) return 0; } +static const struct pcs_soc_data pinctrl_single = { +}; + +static const struct pcs_soc_data pinconf_single = { + .flags = PCS_FEAT_PINCONF, +}; + static struct of_device_id pcs_of_match[] = { - { .compatible = "pinctrl-single", .data = (void *)false }, - { .compatible = "pinconf-single", .data = (void *)true }, + { .compatible = "pinctrl-single", .data = &pinctrl_single }, + { .compatible = "pinconf-single", .data = &pinconf_single }, { }, }; MODULE_DEVICE_TABLE(of, pcs_of_match); From 3e6cee1786a13cb2308609b5f8c020e1754e37cf Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Wed, 2 Oct 2013 21:39:40 -0700 Subject: [PATCH 515/523] pinctrl: single: Add support for wake-up interrupts MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The pin control registers can have interrupts for example for device wake-up. These interrupts can be treated as a chained interrupt controller as suggested earlier by Linus Walleij . This patch adds support for interrupts in a way that should be pretty generic, and works for the omaps that support wake-up interrupts. On omaps, there's an interrupt enable and interrupt status bit for each pin. The two pinctrl domains on omaps share a single interrupt from the PRM chained interrupt handler. Support for other similar hardware should be easy to add. Note that this patch does not attempt to handle the wake-up interrupts automatically unlike the earlier patches. This patch allows the device drivers to do a request_irq() on the wake-up pins as needed. I'll try to do also a separate generic patch for handling the wake-up events automatically. Also note that as this patch makes the pinctrl-single an irq controller, the current bindings need some extra trickery to use interrupts from two different interrupt controllers for the same driver. So it might be worth waiting a little on the patches enabling the wake-up interrupts from drivers as there should be a generic way to handle it coming. And also there's been discussion of interrupts-extended binding for using interrupts from multiple interrupt controllers. In any case, this patch should be ready to go allowing handling the wake-up interrupts in a generic way, or separately from the device drivers. Cc: Peter Ujfalusi Cc: Grygorii Strashko Cc: Prakash Manjunathappa Cc: Roger Quadros Cc: linux-kernel@vger.kernel.org Cc: Benoît Cousson Cc: devicetree@vger.kernel.org Acked-by: Linus Walleij Acked-by: Haojian Zhuang Reviewed-by: Kevin Hilman Tested-by: Kevin Hilman Signed-off-by: Tony Lindgren --- .../bindings/pinctrl/pinctrl-single.txt | 11 + drivers/pinctrl/pinctrl-single.c | 322 ++++++++++++++++++ 2 files changed, 333 insertions(+) diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt index 5a02e30dd262..7069a0b84e3a 100644 --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt @@ -72,6 +72,13 @@ Optional properties: /* pin base, nr pins & gpio function */ pinctrl-single,gpio-range = <&range 0 3 0 &range 3 9 1>; +- interrupt-controller : standard interrupt controller binding if using + interrupts for wake-up events for example. In this case pinctrl-single + is set up as a chained interrupt controller and the wake-up interrupts + can be requested by the drivers using request_irq(). + +- #interrupt-cells : standard interrupt binding if using interrupts + This driver assumes that there is only one register for each pin (unless the pinctrl-single,bit-per-mux is set), and uses the common pinctrl bindings as specified in the pinctrl-bindings.txt document in this directory. @@ -121,6 +128,8 @@ pmx_core: pinmux@4a100040 { reg = <0x4a100040 0x0196>; #address-cells = <1>; #size-cells = <0>; + #interrupt-cells = <1>; + interrupt-controller; pinctrl-single,register-width = <16>; pinctrl-single,function-mask = <0xffff>; }; @@ -131,6 +140,8 @@ pmx_wkup: pinmux@4a31e040 { reg = <0x4a31e040 0x0038>; #address-cells = <1>; #size-cells = <0>; + #interrupt-cells = <1>; + interrupt-controller; pinctrl-single,register-width = <16>; pinctrl-single,function-mask = <0xffff>; }; diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c index f88d3d1b2b99..dad65df36f4b 100644 --- a/drivers/pinctrl/pinctrl-single.c +++ b/drivers/pinctrl/pinctrl-single.c @@ -15,10 +15,14 @@ #include #include #include +#include + +#include #include #include #include +#include #include #include @@ -152,9 +156,15 @@ struct pcs_name { /** * struct pcs_soc_data - SoC specific settings * @flags: initial SoC specific PCS_FEAT_xxx values + * @irq: optional interrupt for the controller + * @irq_enable_mask: optional SoC specific interrupt enable mask + * @irq_status_mask: optional SoC specific interrupt status mask */ struct pcs_soc_data { unsigned flags; + int irq; + unsigned irq_enable_mask; + unsigned irq_status_mask; }; /** @@ -165,6 +175,7 @@ struct pcs_soc_data { * @dev: device entry * @pctl: pin controller device * @flags: mask of PCS_FEAT_xxx values + * @lock: spinlock for register access * @mutex: mutex protecting the lists * @width: bits per mux register * @fmask: function register mask @@ -179,6 +190,9 @@ struct pcs_soc_data { * @pingroups: list of pingroups * @functions: list of functions * @gpiofuncs: list of gpio functions + * @irqs: list of interrupt registers + * @chip: chip container for this instance + * @domain: IRQ domain for this instance * @ngroups: number of pingroups * @nfuncs: number of functions * @desc: pin controller descriptor @@ -192,7 +206,11 @@ struct pcs_device { struct device *dev; struct pinctrl_dev *pctl; unsigned flags; +#define PCS_QUIRK_SHARED_IRQ (1 << 2) +#define PCS_FEAT_IRQ (1 << 1) #define PCS_FEAT_PINCONF (1 << 0) + struct pcs_soc_data socdata; + raw_spinlock_t lock; struct mutex mutex; unsigned width; unsigned fmask; @@ -208,6 +226,9 @@ struct pcs_device { struct list_head pingroups; struct list_head functions; struct list_head gpiofuncs; + struct list_head irqs; + struct irq_chip chip; + struct irq_domain *domain; unsigned ngroups; unsigned nfuncs; struct pinctrl_desc desc; @@ -215,6 +236,8 @@ struct pcs_device { void (*write)(unsigned val, void __iomem *reg); }; +#define PCS_QUIRK_HAS_SHARED_IRQ (pcs->flags & PCS_QUIRK_SHARED_IRQ) +#define PCS_HAS_IRQ (pcs->flags & PCS_FEAT_IRQ) #define PCS_HAS_PINCONF (pcs->flags & PCS_FEAT_PINCONF) static int pcs_pinconf_get(struct pinctrl_dev *pctldev, unsigned pin, @@ -440,9 +463,11 @@ static int pcs_enable(struct pinctrl_dev *pctldev, unsigned fselector, for (i = 0; i < func->nvals; i++) { struct pcs_func_vals *vals; + unsigned long flags; unsigned val, mask; vals = &func->vals[i]; + raw_spin_lock_irqsave(&pcs->lock, flags); val = pcs->read(vals->reg); if (pcs->bits_per_mux) @@ -453,6 +478,7 @@ static int pcs_enable(struct pinctrl_dev *pctldev, unsigned fselector, val &= ~mask; val |= (vals->val & mask); pcs->write(val, vals->reg); + raw_spin_unlock_irqrestore(&pcs->lock, flags); } return 0; @@ -494,13 +520,16 @@ static void pcs_disable(struct pinctrl_dev *pctldev, unsigned fselector, for (i = 0; i < func->nvals; i++) { struct pcs_func_vals *vals; + unsigned long flags; unsigned val; vals = &func->vals[i]; + raw_spin_lock_irqsave(&pcs->lock, flags); val = pcs->read(vals->reg); val &= ~pcs->fmask; val |= pcs->foff << pcs->fshift; pcs->write(val, vals->reg); + raw_spin_unlock_irqrestore(&pcs->lock, flags); } } @@ -1450,12 +1479,34 @@ static void pcs_free_pingroups(struct pcs_device *pcs) mutex_unlock(&pcs->mutex); } +/** + * pcs_irq_free() - free interrupt + * @pcs: pcs driver instance + */ +static void pcs_irq_free(struct pcs_device *pcs) +{ + struct pcs_soc_data *pcs_soc = &pcs->socdata; + + if (pcs_soc->irq < 0) + return; + + if (pcs->domain) + irq_domain_remove(pcs->domain); + + if (PCS_QUIRK_HAS_SHARED_IRQ) + free_irq(pcs_soc->irq, pcs_soc); + else + irq_set_chained_handler(pcs_soc->irq, NULL); +} + /** * pcs_free_resources() - free memory used by this driver * @pcs: pcs driver instance */ static void pcs_free_resources(struct pcs_device *pcs) { + pcs_irq_free(pcs); + if (pcs->pctl) pinctrl_unregister(pcs->pctl); @@ -1504,6 +1555,256 @@ static int pcs_add_gpio_func(struct device_node *node, struct pcs_device *pcs) } return ret; } +/** + * @reg: virtual address of interrupt register + * @hwirq: hardware irq number + * @irq: virtual irq number + * @node: list node + */ +struct pcs_interrupt { + void __iomem *reg; + irq_hw_number_t hwirq; + unsigned int irq; + struct list_head node; +}; + +/** + * pcs_irq_set() - enables or disables an interrupt + * + * Note that this currently assumes one interrupt per pinctrl + * register that is typically used for wake-up events. + */ +static inline void pcs_irq_set(struct pcs_soc_data *pcs_soc, + int irq, const bool enable) +{ + struct pcs_device *pcs; + struct list_head *pos; + unsigned mask; + + pcs = container_of(pcs_soc, struct pcs_device, socdata); + list_for_each(pos, &pcs->irqs) { + struct pcs_interrupt *pcswi; + unsigned soc_mask; + + pcswi = list_entry(pos, struct pcs_interrupt, node); + if (irq != pcswi->irq) + continue; + + soc_mask = pcs_soc->irq_enable_mask; + raw_spin_lock(&pcs->lock); + mask = pcs->read(pcswi->reg); + if (enable) + mask |= soc_mask; + else + mask &= ~soc_mask; + pcs->write(mask, pcswi->reg); + raw_spin_unlock(&pcs->lock); + } +} + +/** + * pcs_irq_mask() - mask pinctrl interrupt + * @d: interrupt data + */ +static void pcs_irq_mask(struct irq_data *d) +{ + struct pcs_soc_data *pcs_soc = irq_data_get_irq_chip_data(d); + + pcs_irq_set(pcs_soc, d->irq, false); +} + +/** + * pcs_irq_unmask() - unmask pinctrl interrupt + * @d: interrupt data + */ +static void pcs_irq_unmask(struct irq_data *d) +{ + struct pcs_soc_data *pcs_soc = irq_data_get_irq_chip_data(d); + + pcs_irq_set(pcs_soc, d->irq, true); +} + +/** + * pcs_irq_set_wake() - toggle the suspend and resume wake up + * @d: interrupt data + * @state: wake-up state + * + * Note that this should be called only for suspend and resume. + * For runtime PM, the wake-up events should be enabled by default. + */ +static int pcs_irq_set_wake(struct irq_data *d, unsigned int state) +{ + if (state) + pcs_irq_unmask(d); + else + pcs_irq_mask(d); + + return 0; +} + +/** + * pcs_irq_handle() - common interrupt handler + * @pcs_irq: interrupt data + * + * Note that this currently assumes we have one interrupt bit per + * mux register. This interrupt is typically used for wake-up events. + * For more complex interrupts different handlers can be specified. + */ +static int pcs_irq_handle(struct pcs_soc_data *pcs_soc) +{ + struct pcs_device *pcs; + struct list_head *pos; + int count = 0; + + pcs = container_of(pcs_soc, struct pcs_device, socdata); + list_for_each(pos, &pcs->irqs) { + struct pcs_interrupt *pcswi; + unsigned mask; + + pcswi = list_entry(pos, struct pcs_interrupt, node); + raw_spin_lock(&pcs->lock); + mask = pcs->read(pcswi->reg); + raw_spin_unlock(&pcs->lock); + if (mask & pcs_soc->irq_status_mask) { + generic_handle_irq(irq_find_mapping(pcs->domain, + pcswi->hwirq)); + count++; + } + } + + return count; +} + +/** + * pcs_irq_handler() - handler for the shared interrupt case + * @irq: interrupt + * @d: data + * + * Use this for cases where multiple instances of + * pinctrl-single share a single interrupt like on omaps. + */ +static irqreturn_t pcs_irq_handler(int irq, void *d) +{ + struct pcs_soc_data *pcs_soc = d; + + return pcs_irq_handle(pcs_soc) ? IRQ_HANDLED : IRQ_NONE; +} + +/** + * pcs_irq_handle() - handler for the dedicated chained interrupt case + * @irq: interrupt + * @desc: interrupt descriptor + * + * Use this if you have a separate interrupt for each + * pinctrl-single instance. + */ +static void pcs_irq_chain_handler(unsigned int irq, struct irq_desc *desc) +{ + struct pcs_soc_data *pcs_soc = irq_desc_get_handler_data(desc); + struct irq_chip *chip; + int res; + + chip = irq_get_chip(irq); + chained_irq_enter(chip, desc); + res = pcs_irq_handle(pcs_soc); + /* REVISIT: export and add handle_bad_irq(irq, desc)? */ + chained_irq_exit(chip, desc); + + return; +} + +static int pcs_irqdomain_map(struct irq_domain *d, unsigned int irq, + irq_hw_number_t hwirq) +{ + struct pcs_soc_data *pcs_soc = d->host_data; + struct pcs_device *pcs; + struct pcs_interrupt *pcswi; + + pcs = container_of(pcs_soc, struct pcs_device, socdata); + pcswi = devm_kzalloc(pcs->dev, sizeof(*pcswi), GFP_KERNEL); + if (!pcswi) + return -ENOMEM; + + pcswi->reg = pcs->base + hwirq; + pcswi->hwirq = hwirq; + pcswi->irq = irq; + + mutex_lock(&pcs->mutex); + list_add_tail(&pcswi->node, &pcs->irqs); + mutex_unlock(&pcs->mutex); + + irq_set_chip_data(irq, pcs_soc); + irq_set_chip_and_handler(irq, &pcs->chip, + handle_level_irq); + set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); + + return 0; +} + +static struct irq_domain_ops pcs_irqdomain_ops = { + .map = pcs_irqdomain_map, + .xlate = irq_domain_xlate_onecell, +}; + +/** + * pcs_irq_init_chained_handler() - set up a chained interrupt handler + * @pcs: pcs driver instance + * @np: device node pointer + */ +static int pcs_irq_init_chained_handler(struct pcs_device *pcs, + struct device_node *np) +{ + struct pcs_soc_data *pcs_soc = &pcs->socdata; + const char *name = "pinctrl"; + int num_irqs; + + if (!pcs_soc->irq_enable_mask || + !pcs_soc->irq_status_mask) { + pcs_soc->irq = -1; + return -EINVAL; + } + + INIT_LIST_HEAD(&pcs->irqs); + pcs->chip.name = name; + pcs->chip.irq_ack = pcs_irq_mask; + pcs->chip.irq_mask = pcs_irq_mask; + pcs->chip.irq_unmask = pcs_irq_unmask; + pcs->chip.irq_set_wake = pcs_irq_set_wake; + + if (PCS_QUIRK_HAS_SHARED_IRQ) { + int res; + + res = request_irq(pcs_soc->irq, pcs_irq_handler, + IRQF_SHARED | IRQF_NO_SUSPEND, + name, pcs_soc); + if (res) { + pcs_soc->irq = -1; + return res; + } + } else { + irq_set_handler_data(pcs_soc->irq, pcs_soc); + irq_set_chained_handler(pcs_soc->irq, + pcs_irq_chain_handler); + } + + /* + * We can use the register offset as the hardirq + * number as irq_domain_add_simple maps them lazily. + * This way we can easily support more than one + * interrupt per function if needed. + */ + num_irqs = pcs->size; + + pcs->domain = irq_domain_add_simple(np, num_irqs, 0, + &pcs_irqdomain_ops, + pcs_soc); + if (!pcs->domain) { + irq_set_chained_handler(pcs_soc->irq, NULL); + return -EINVAL; + } + + return 0; +} #ifdef CONFIG_PM static int pinctrl_single_suspend(struct platform_device *pdev, @@ -1549,12 +1850,14 @@ static int pcs_probe(struct platform_device *pdev) return -ENOMEM; } pcs->dev = &pdev->dev; + raw_spin_lock_init(&pcs->lock); mutex_init(&pcs->mutex); INIT_LIST_HEAD(&pcs->pingroups); INIT_LIST_HEAD(&pcs->functions); INIT_LIST_HEAD(&pcs->gpiofuncs); soc = match->data; pcs->flags = soc->flags; + memcpy(&pcs->socdata, soc, sizeof(*soc)); PCS_GET_PROP_U32("pinctrl-single,register-width", &pcs->width, "register width not specified\n"); @@ -1642,6 +1945,16 @@ static int pcs_probe(struct platform_device *pdev) if (ret < 0) goto free; + pcs->socdata.irq = irq_of_parse_and_map(np, 0); + if (pcs->socdata.irq) + pcs->flags |= PCS_FEAT_IRQ; + + if (PCS_HAS_IRQ) { + ret = pcs_irq_init_chained_handler(pcs, np); + if (ret < 0) + dev_warn(pcs->dev, "initialized with no interrupts\n"); + } + dev_info(pcs->dev, "%i pins at pa %p size %u\n", pcs->desc.npins, pcs->base, pcs->size); @@ -1665,6 +1978,12 @@ static int pcs_remove(struct platform_device *pdev) return 0; } +static const struct pcs_soc_data pinctrl_single_omap_wkup = { + .flags = PCS_QUIRK_SHARED_IRQ, + .irq_enable_mask = (1 << 14), /* OMAP_WAKEUP_EN */ + .irq_status_mask = (1 << 15), /* OMAP_WAKEUP_EVENT */ +}; + static const struct pcs_soc_data pinctrl_single = { }; @@ -1673,6 +1992,9 @@ static const struct pcs_soc_data pinconf_single = { }; static struct of_device_id pcs_of_match[] = { + { .compatible = "ti,omap3-padconf", .data = &pinctrl_single_omap_wkup }, + { .compatible = "ti,omap4-padconf", .data = &pinctrl_single_omap_wkup }, + { .compatible = "ti,omap5-padconf", .data = &pinctrl_single_omap_wkup }, { .compatible = "pinctrl-single", .data = &pinctrl_single }, { .compatible = "pinconf-single", .data = &pinconf_single }, { }, From dc7743aa3c49fabbc6dc9edbcf7df74d776ac32e Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Wed, 2 Oct 2013 21:39:40 -0700 Subject: [PATCH 516/523] pinctrl: single: Add support for auxdata For omaps, we still have dependencies to the legacy code for handling the PRM (Power Reset Management) interrupts, and also for reconfiguring the io wake-up chain after changes. Let's pass the PRM interrupt and the rearm functions via auxdata. Then when at some point we have a proper PRM driver, we can get the interrupt via device tree and set up the rearm function as exported function in the PRM driver. By using auxdata we can remove a dependency to the wake-up events for converting omap3 to be device tree only. Cc: Peter Ujfalusi Cc: Grygorii Strashko Cc: Prakash Manjunathappa Cc: Roger Quadros Cc: Haojian Zhuang Cc: linux-kernel@vger.kernel.org Reviewed-by: Kevin Hilman Tested-by: Kevin Hilman Acked-by: Linus Walleij Signed-off-by: Tony Lindgren --- drivers/pinctrl/pinctrl-single.c | 23 ++++++++++++++++++++ include/linux/platform_data/pinctrl-single.h | 12 ++++++++++ 2 files changed, 35 insertions(+) create mode 100644 include/linux/platform_data/pinctrl-single.h diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c index dad65df36f4b..c2aada71c915 100644 --- a/drivers/pinctrl/pinctrl-single.c +++ b/drivers/pinctrl/pinctrl-single.c @@ -28,6 +28,8 @@ #include #include +#include + #include "core.h" #include "pinconf.h" @@ -159,12 +161,14 @@ struct pcs_name { * @irq: optional interrupt for the controller * @irq_enable_mask: optional SoC specific interrupt enable mask * @irq_status_mask: optional SoC specific interrupt status mask + * @rearm: optional SoC specific wake-up rearm function */ struct pcs_soc_data { unsigned flags; int irq; unsigned irq_enable_mask; unsigned irq_status_mask; + void (*rearm)(void); }; /** @@ -1622,6 +1626,8 @@ static void pcs_irq_unmask(struct irq_data *d) struct pcs_soc_data *pcs_soc = irq_data_get_irq_chip_data(d); pcs_irq_set(pcs_soc, d->irq, true); + if (pcs_soc->rearm) + pcs_soc->rearm(); } /** @@ -1672,6 +1678,11 @@ static int pcs_irq_handle(struct pcs_soc_data *pcs_soc) } } + /* + * For debugging on omaps, you may want to call pcs_soc->rearm() + * here to see wake-up interrupts during runtime also. + */ + return count; } @@ -1835,6 +1846,7 @@ static int pcs_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; const struct of_device_id *match; + struct pcs_pdata *pdata; struct resource *res; struct pcs_device *pcs; const struct pcs_soc_data *soc; @@ -1949,6 +1961,17 @@ static int pcs_probe(struct platform_device *pdev) if (pcs->socdata.irq) pcs->flags |= PCS_FEAT_IRQ; + /* We still need auxdata for some omaps for PRM interrupts */ + pdata = dev_get_platdata(&pdev->dev); + if (pdata) { + if (pdata->rearm) + pcs->socdata.rearm = pdata->rearm; + if (pdata->irq) { + pcs->socdata.irq = pdata->irq; + pcs->flags |= PCS_FEAT_IRQ; + } + } + if (PCS_HAS_IRQ) { ret = pcs_irq_init_chained_handler(pcs, np); if (ret < 0) diff --git a/include/linux/platform_data/pinctrl-single.h b/include/linux/platform_data/pinctrl-single.h new file mode 100644 index 000000000000..72eacda9b360 --- /dev/null +++ b/include/linux/platform_data/pinctrl-single.h @@ -0,0 +1,12 @@ +/** + * irq: optional wake-up interrupt + * rearm: optional soc specific rearm function + * + * Note that the irq and rearm setup should come from device + * tree except for omap where there are still some dependencies + * to the legacy PRM code. + */ +struct pcs_pdata { + int irq; + void (*rearm)(void); +}; From 8651bd8ce36fb324c218167c970d6734dc825f2c Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 10 Oct 2013 15:45:12 -0700 Subject: [PATCH 517/523] ARM: OMAP2+: Add support for auxdata For few things we're still going to be needing platform data for device tree based drivers. Let's set up auxdata handling and do it in pdata-quirks.c so we have all the legacy calls in one place. Reviewed-by: Kevin Hilman Tested-by: Kevin Hilman Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/board-generic.c | 5 +---- arch/arm/mach-omap2/common.h | 3 ++- arch/arm/mach-omap2/pdata-quirks.c | 11 ++++++++++- 3 files changed, 13 insertions(+), 6 deletions(-) diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c index a66575f33973..3017a9d67ac8 100644 --- a/arch/arm/mach-omap2/board-generic.c +++ b/arch/arm/mach-omap2/board-generic.c @@ -35,10 +35,7 @@ static struct of_device_id omap_dt_match_table[] __initdata = { static void __init omap_generic_init(void) { - omap_sdrc_init(NULL, NULL); - - of_platform_populate(NULL, omap_dt_match_table, NULL, NULL); - pdata_quirks_init(); + pdata_quirks_init(omap_dt_match_table); } #ifdef CONFIG_SOC_OMAP2420 diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h index fd059e02574d..c6aebf0b42d8 100644 --- a/arch/arm/mach-omap2/common.h +++ b/arch/arm/mach-omap2/common.h @@ -288,7 +288,8 @@ static inline void omap4_cpu_resume(void) #endif -void pdata_quirks_init(void); +void pdata_quirks_init(struct of_device_id *); +void omap_pcs_legacy_init(int irq, void (*rearm)(void)); struct omap_sdrc_params; extern void omap_sdrc_init(struct omap_sdrc_params *sdrc_cs0, diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index 9113e7037ae5..76abc5b63d6d 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include "common.h" @@ -104,6 +105,10 @@ static void __init omap5_uevm_legacy_init(void) } #endif +struct of_dev_auxdata omap_auxdata_lookup[] __initdata = { + { /* sentinel */ }, +}; + static struct pdata_init pdata_quirks[] __initdata = { #ifdef CONFIG_ARCH_OMAP3 { "nokia,omap3-n9", hsmmc2_internal_input_clk, }, @@ -120,10 +125,14 @@ static struct pdata_init pdata_quirks[] __initdata = { { /* sentinel */ }, }; -void __init pdata_quirks_init(void) +void __init pdata_quirks_init(struct of_device_id *omap_dt_match_table) { struct pdata_init *quirks = pdata_quirks; + omap_sdrc_init(NULL, NULL); + of_platform_populate(NULL, omap_dt_match_table, + omap_auxdata_lookup, NULL); + while (quirks->compatible) { if (of_machine_is_compatible(quirks->compatible)) { if (quirks->fn) From 30a69ef785e87c791aab0b4dae76709a7baa3e85 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 10 Oct 2013 15:45:13 -0700 Subject: [PATCH 518/523] ARM: OMAP: Move DT wake-up event handling over to use pinctrl-single-omap Now pinctrl-single-omap can handle the wake-up events for us now as long as the events are configured in the .dts files. Done in collaboration with Roger Quadros . Cc: Peter Ujfalusi Cc: Grygorii Strashko Cc: Prakash Manjunathappa Cc: Roger Quadros Cc: Haojian Zhuang Cc: Linus Walleij Reviewed-by: Kevin Hilman Tested-by: Kevin Hilman Signed-off-by: Roger Quadros Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/omap3.dtsi | 4 ++++ arch/arm/boot/dts/omap4.dtsi | 4 ++++ arch/arm/mach-omap2/mux.c | 8 ++++++-- arch/arm/mach-omap2/pdata-quirks.c | 18 ++++++++++++++++++ arch/arm/mach-omap2/prm3xxx.h | 8 +++++++- arch/arm/mach-omap2/prm44xx_54xx.h | 8 +++++++- arch/arm/mach-omap2/prm_common.c | 11 +++++++++++ 7 files changed, 57 insertions(+), 4 deletions(-) diff --git a/arch/arm/boot/dts/omap3.dtsi b/arch/arm/boot/dts/omap3.dtsi index 7d95cda1fae4..695e2d34c9c6 100644 --- a/arch/arm/boot/dts/omap3.dtsi +++ b/arch/arm/boot/dts/omap3.dtsi @@ -107,6 +107,8 @@ reg = <0x48002030 0x05cc>; #address-cells = <1>; #size-cells = <0>; + #interrupt-cells = <1>; + interrupt-controller; pinctrl-single,register-width = <16>; pinctrl-single,function-mask = <0x7f1f>; }; @@ -116,6 +118,8 @@ reg = <0x48002a00 0x5c>; #address-cells = <1>; #size-cells = <0>; + #interrupt-cells = <1>; + interrupt-controller; pinctrl-single,register-width = <16>; pinctrl-single,function-mask = <0x7f1f>; }; diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi index 22d9f2b593d4..0415d5ed6014 100644 --- a/arch/arm/boot/dts/omap4.dtsi +++ b/arch/arm/boot/dts/omap4.dtsi @@ -114,6 +114,8 @@ reg = <0x4a100040 0x0196>; #address-cells = <1>; #size-cells = <0>; + #interrupt-cells = <1>; + interrupt-controller; pinctrl-single,register-width = <16>; pinctrl-single,function-mask = <0x7fff>; }; @@ -122,6 +124,8 @@ reg = <0x4a31e040 0x0038>; #address-cells = <1>; #size-cells = <0>; + #interrupt-cells = <1>; + interrupt-controller; pinctrl-single,register-width = <16>; pinctrl-single,function-mask = <0x7fff>; }; diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c index f82cf878d6af..48094b58c88f 100644 --- a/arch/arm/mach-omap2/mux.c +++ b/arch/arm/mach-omap2/mux.c @@ -811,6 +811,12 @@ int __init omap_mux_late_init(void) } } + omap_mux_dbg_init(); + + /* see pinctrl-single-omap for the wake-up interrupt handling */ + if (of_have_populated_dt()) + return 0; + ret = request_irq(omap_prcm_event_to_irq("io"), omap_hwmod_mux_handle_irq, IRQF_SHARED | IRQF_NO_SUSPEND, "hwmod_io", omap_mux_late_init); @@ -818,8 +824,6 @@ int __init omap_mux_late_init(void) if (ret) pr_warning("mux: Failed to setup hwmod io irq %d\n", ret); - omap_mux_dbg_init(); - return 0; } diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index 76abc5b63d6d..18afbde020f7 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -14,6 +14,8 @@ #include #include +#include + #include "common.h" #include "common-board-devices.h" #include "dss-common.h" @@ -105,7 +107,23 @@ static void __init omap5_uevm_legacy_init(void) } #endif +static struct pcs_pdata pcs_pdata; + +void omap_pcs_legacy_init(int irq, void (*rearm)(void)) +{ + pcs_pdata.irq = irq; + pcs_pdata.rearm = rearm; +} + struct of_dev_auxdata omap_auxdata_lookup[] __initdata = { +#ifdef CONFIG_ARCH_OMAP3 + OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata), + OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata), +#endif +#ifdef CONFIG_ARCH_OMAP4 + OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata), + OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata), +#endif { /* sentinel */ }, }; diff --git a/arch/arm/mach-omap2/prm3xxx.h b/arch/arm/mach-omap2/prm3xxx.h index 277f71794e61..f8eb83323b1a 100644 --- a/arch/arm/mach-omap2/prm3xxx.h +++ b/arch/arm/mach-omap2/prm3xxx.h @@ -144,7 +144,13 @@ extern u32 omap3_prm_vcvp_read(u8 offset); extern void omap3_prm_vcvp_write(u32 val, u8 offset); extern u32 omap3_prm_vcvp_rmw(u32 mask, u32 bits, u8 offset); -extern void omap3xxx_prm_reconfigure_io_chain(void); +#ifdef CONFIG_ARCH_OMAP3 +void omap3xxx_prm_reconfigure_io_chain(void); +#else +static inline void omap3xxx_prm_reconfigure_io_chain(void) +{ +} +#endif /* PRM interrupt-related functions */ extern void omap3xxx_prm_read_pending_irqs(unsigned long *events); diff --git a/arch/arm/mach-omap2/prm44xx_54xx.h b/arch/arm/mach-omap2/prm44xx_54xx.h index 7cd22abb8f15..a085d9cc1f5d 100644 --- a/arch/arm/mach-omap2/prm44xx_54xx.h +++ b/arch/arm/mach-omap2/prm44xx_54xx.h @@ -42,7 +42,13 @@ extern u32 omap4_prm_vcvp_read(u8 offset); extern void omap4_prm_vcvp_write(u32 val, u8 offset); extern u32 omap4_prm_vcvp_rmw(u32 mask, u32 bits, u8 offset); -extern void omap44xx_prm_reconfigure_io_chain(void); +#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5) +void omap44xx_prm_reconfigure_io_chain(void); +#else +static inline void omap44xx_prm_reconfigure_io_chain(void) +{ +} +#endif /* PRM interrupt-related functions */ extern void omap44xx_prm_read_pending_irqs(unsigned long *events); diff --git a/arch/arm/mach-omap2/prm_common.c b/arch/arm/mach-omap2/prm_common.c index 228b850e632f..a2e1174ad1b6 100644 --- a/arch/arm/mach-omap2/prm_common.c +++ b/arch/arm/mach-omap2/prm_common.c @@ -24,6 +24,7 @@ #include #include +#include "soc.h" #include "prm2xxx_3xxx.h" #include "prm2xxx.h" #include "prm3xxx.h" @@ -322,6 +323,16 @@ int omap_prcm_register_chain_handler(struct omap_prcm_irq_setup *irq_setup) prcm_irq_chips[i] = gc; } + if (of_have_populated_dt()) { + int irq = omap_prcm_event_to_irq("io"); + if (cpu_is_omap34xx()) + omap_pcs_legacy_init(irq, + omap3xxx_prm_reconfigure_io_chain); + else + omap_pcs_legacy_init(irq, + omap44xx_prm_reconfigure_io_chain); + } + return 0; err: From 79b39f7918559da88be9463fc8b6674dd1ca2896 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 11 Oct 2013 09:20:54 -0700 Subject: [PATCH 519/523] ARM: OMAP2+: Use pdata quirks for wl12xx for omap3 evm and zoom3 As the wl12xx bindings are still pending, this way we can get things working for omap3 evm and zoom platforms. Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/pdata-quirks.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index 18afbde020f7..10c71450cf63 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -82,6 +82,16 @@ static void __init omap3_igep0020_legacy_init(void) { omap3_igep2_display_init_of(); } + +static void __init omap3_evm_legacy_init(void) +{ + legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 149); +} + +static void __init omap3_zoom_legacy_init(void) +{ + legacy_init_wl12xx(WL12XX_REFCLOCK_26, 0, 162); +} #endif /* CONFIG_ARCH_OMAP3 */ #ifdef CONFIG_ARCH_OMAP4 @@ -132,6 +142,8 @@ static struct pdata_init pdata_quirks[] __initdata = { { "nokia,omap3-n9", hsmmc2_internal_input_clk, }, { "nokia,omap3-n950", hsmmc2_internal_input_clk, }, { "isee,omap3-igep0020", omap3_igep0020_legacy_init, }, + { "ti,omap3-evm-37xx", omap3_evm_legacy_init, }, + { "ti,omap3-zoom3", omap3_zoom_legacy_init, }, #endif #ifdef CONFIG_ARCH_OMAP4 { "ti,omap4-sdp", omap4_sdp_legacy_init, }, From f2bf0e72d000e76c4a9904cc8230cb2e659a2db4 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 11 Oct 2013 09:21:26 -0700 Subject: [PATCH 520/523] ARM: OMAP2+: Add minimal 8250 support for GPMC Just initialize things using the bootloader timings like we've been doing for the legacy booting too. It should be possible to patch in the GPMC timings for the based on the TL16CP743C/TL16C754C manual at: http://www.ti.com/lit/ds/slls644g/slls644g.pdf Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/gpmc.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c index 579697adaae7..51525faa0aec 100644 --- a/arch/arm/mach-omap2/gpmc.c +++ b/arch/arm/mach-omap2/gpmc.c @@ -1521,6 +1521,42 @@ err: return ret; } +/* + * REVISIT: Add timing support from slls644g.pdf + */ +static int gpmc_probe_8250(struct platform_device *pdev, + struct device_node *child) +{ + struct resource res; + unsigned long base; + int ret, cs; + + if (of_property_read_u32(child, "reg", &cs) < 0) { + dev_err(&pdev->dev, "%s has no 'reg' property\n", + child->full_name); + return -ENODEV; + } + + if (of_address_to_resource(child, 0, &res) < 0) { + dev_err(&pdev->dev, "%s has malformed 'reg' property\n", + child->full_name); + return -ENODEV; + } + + ret = gpmc_cs_request(cs, resource_size(&res), &base); + if (ret < 0) { + dev_err(&pdev->dev, "cannot request GPMC CS %d\n", cs); + return ret; + } + + if (of_platform_device_create(child, NULL, &pdev->dev)) + return 0; + + dev_err(&pdev->dev, "failed to create gpmc child %s\n", child->name); + + return -ENODEV; +} + static int gpmc_probe_dt(struct platform_device *pdev) { int ret; @@ -1564,6 +1600,8 @@ static int gpmc_probe_dt(struct platform_device *pdev) else if (of_node_cmp(child->name, "ethernet") == 0 || of_node_cmp(child->name, "nor") == 0) ret = gpmc_probe_generic_child(pdev, child); + else if (of_node_cmp(child->name, "8250") == 0) + ret = gpmc_probe_8250(pdev, child); if (WARN(ret < 0, "%s: probing gpmc child %s failed\n", __func__, child->full_name)) From fb23ba55eaa603279744565caf26a7f64e370517 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 11 Oct 2013 09:18:20 -0700 Subject: [PATCH 521/523] ARM: OMAP2+: Run make savedefconfig on omap2plus_defconfig to shrink it We can save few tens of lines this way, and it is easier to generate minimal patches against omap2plus_defconfig. Signed-off-by: Tony Lindgren --- arch/arm/configs/omap2plus_defconfig | 92 +++++++++------------------- 1 file changed, 30 insertions(+), 62 deletions(-) diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig index 254cf0539439..9549d6f29b50 100644 --- a/arch/arm/configs/omap2plus_defconfig +++ b/arch/arm/configs/omap2plus_defconfig @@ -1,14 +1,13 @@ -CONFIG_EXPERIMENTAL=y CONFIG_SYSVIPC=y CONFIG_POSIX_MQUEUE=y +CONFIG_NO_HZ=y +CONFIG_HIGH_RES_TIMERS=y CONFIG_BSD_PROCESS_ACCT=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_LOG_BUF_SHIFT=16 CONFIG_BLK_DEV_INITRD=y CONFIG_EXPERT=y -# CONFIG_SYSCTL_SYSCALL is not set -CONFIG_KALLSYMS_EXTRA_PASS=y CONFIG_SLAB=y CONFIG_PROFILING=y CONFIG_OPROFILE=y @@ -20,22 +19,21 @@ CONFIG_MODULE_FORCE_UNLOAD=y CONFIG_MODVERSIONS=y CONFIG_MODULE_SRCVERSION_ALL=y # CONFIG_BLK_DEV_BSG is not set +CONFIG_PARTITION_ADVANCED=y CONFIG_ARCH_MULTI_V6=y -CONFIG_ARCH_OMAP2PLUS=y +CONFIG_OMAP_RESET_CLOCKS=y +CONFIG_OMAP_MUX_DEBUG=y CONFIG_ARCH_OMAP2=y CONFIG_ARCH_OMAP3=y CONFIG_ARCH_OMAP4=y +CONFIG_SOC_OMAP5=y CONFIG_SOC_AM33XX=y -CONFIG_OMAP_RESET_CLOCKS=y -CONFIG_OMAP_MUX_DEBUG=y -CONFIG_ARCH_VEXPRESS_CA9X4=y +CONFIG_SOC_DRA7XX=y CONFIG_ARM_THUMBEE=y CONFIG_ARM_ERRATA_411920=y -CONFIG_NO_HZ=y -CONFIG_HIGH_RES_TIMERS=y CONFIG_SMP=y CONFIG_NR_CPUS=2 -CONFIG_LEDS=y +CONFIG_CMA=y CONFIG_ZBOOT_ROM_TEXT=0x0 CONFIG_ZBOOT_ROM_BSS=0x0 CONFIG_ARM_APPENDED_DTB=y @@ -61,8 +59,6 @@ CONFIG_IP_PNP_RARP=y # CONFIG_IPV6 is not set CONFIG_NETFILTER=y CONFIG_CAN=m -CONFIG_CAN_RAW=m -CONFIG_CAN_BCM=m CONFIG_CAN_C_CAN=m CONFIG_CAN_C_CAN_PLATFORM=m CONFIG_BT=m @@ -77,14 +73,12 @@ CONFIG_MAC80211=m CONFIG_MAC80211_RC_PID=y CONFIG_MAC80211_RC_DEFAULT_PID=y CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" -CONFIG_CMA=y -CONFIG_DMA_CMA=y -CONFIG_CONNECTOR=y CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y +CONFIG_DMA_CMA=y +CONFIG_CONNECTOR=y CONFIG_MTD=y CONFIG_MTD_CMDLINE_PARTS=y -CONFIG_MTD_CHAR=y CONFIG_MTD_BLOCK=y CONFIG_MTD_OOPS=y CONFIG_MTD_CFI=y @@ -98,32 +92,32 @@ CONFIG_MTD_UBI=y CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=16384 -CONFIG_SENSORS_LIS3LV02D=m CONFIG_SENSORS_TSL2550=m -CONFIG_SENSORS_LIS3_I2C=m CONFIG_BMP085_I2C=m +CONFIG_SENSORS_LIS3_I2C=m CONFIG_SCSI=y CONFIG_BLK_DEV_SD=y CONFIG_SCSI_MULTI_LUN=y CONFIG_SCSI_SCAN_ASYNC=y CONFIG_MD=y CONFIG_NETDEVICES=y -CONFIG_SMSC_PHY=y -CONFIG_NET_ETHERNET=y -CONFIG_SMC91X=y -CONFIG_SMSC911X=y CONFIG_KS8851=y CONFIG_KS8851_MLL=y -CONFIG_LIBERTAS=m -CONFIG_LIBERTAS_USB=m -CONFIG_LIBERTAS_SDIO=m -CONFIG_LIBERTAS_DEBUG=y +CONFIG_SMC91X=y +CONFIG_SMSC911X=y +CONFIG_TI_CPSW=y +CONFIG_AT803X_PHY=y +CONFIG_SMSC_PHY=y CONFIG_USB_USBNET=y CONFIG_USB_NET_SMSC95XX=y CONFIG_USB_ALI_M5632=y CONFIG_USB_AN2720=y CONFIG_USB_EPSON2888=y CONFIG_USB_KC2190=y +CONFIG_LIBERTAS=m +CONFIG_LIBERTAS_USB=m +CONFIG_LIBERTAS_SDIO=m +CONFIG_LIBERTAS_DEBUG=y CONFIG_INPUT_JOYDEV=y CONFIG_INPUT_EVDEV=y CONFIG_KEYBOARD_GPIO=y @@ -133,7 +127,6 @@ CONFIG_INPUT_TOUCHSCREEN=y CONFIG_TOUCHSCREEN_ADS7846=y CONFIG_INPUT_MISC=y CONFIG_INPUT_TWL4030_PWRBUTTON=y -CONFIG_VT_HW_CONSOLE_BINDING=y # CONFIG_LEGACY_PTYS is not set CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_CONSOLE=y @@ -143,8 +136,6 @@ CONFIG_SERIAL_8250_MANY_PORTS=y CONFIG_SERIAL_8250_SHARE_IRQ=y CONFIG_SERIAL_8250_DETECT_IRQ=y CONFIG_SERIAL_8250_RSA=y -CONFIG_SERIAL_AMBA_PL011=y -CONFIG_SERIAL_AMBA_PL011_CONSOLE=y CONFIG_SERIAL_OMAP=y CONFIG_SERIAL_OMAP_CONSOLE=y CONFIG_HW_RANDOM=y @@ -158,31 +149,29 @@ CONFIG_GPIO_TWL4030=y CONFIG_W1=y CONFIG_POWER_SUPPLY=y CONFIG_SENSORS_LM75=m -CONFIG_WATCHDOG=y CONFIG_THERMAL=y -CONFIG_THERMAL_HWMON=y -CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y CONFIG_THERMAL_GOV_FAIR_SHARE=y -CONFIG_THERMAL_GOV_STEP_WISE=y CONFIG_THERMAL_GOV_USER_SPACE=y -CONFIG_CPU_THERMAL=y +CONFIG_TI_SOC_THERMAL=y +CONFIG_OMAP4_THERMAL=y +CONFIG_OMAP5_THERMAL=y +CONFIG_DRA752_THERMAL=y +CONFIG_WATCHDOG=y CONFIG_OMAP_WATCHDOG=y CONFIG_TWL4030_WATCHDOG=y CONFIG_MFD_TPS65217=y CONFIG_MFD_TPS65910=y CONFIG_TWL6040_CORE=y -CONFIG_REGULATOR_TWL4030=y CONFIG_REGULATOR_TPS65023=y CONFIG_REGULATOR_TPS6507X=y CONFIG_REGULATOR_TPS65217=y CONFIG_REGULATOR_TPS65910=y +CONFIG_REGULATOR_TWL4030=y CONFIG_FB=y CONFIG_FIRMWARE_EDID=y CONFIG_FB_MODE_HELPERS=y CONFIG_FB_TILEBLITTING=y -CONFIG_FB_OMAP_LCD_VGA=y CONFIG_OMAP2_DSS=m -CONFIG_OMAP2_DSS_RFBI=y CONFIG_OMAP2_DSS_SDI=y CONFIG_OMAP2_DSS_DSI=y CONFIG_FB_OMAP2=m @@ -194,12 +183,8 @@ CONFIG_DISPLAY_PANEL_DPI=m CONFIG_BACKLIGHT_LCD_SUPPORT=y CONFIG_LCD_CLASS_DEVICE=y CONFIG_LCD_PLATFORM=y -CONFIG_DISPLAY_SUPPORT=y CONFIG_FRAMEBUFFER_CONSOLE=y CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y -CONFIG_FONTS=y -CONFIG_FONT_8x8=y -CONFIG_FONT_8x16=y CONFIG_LOGO=y CONFIG_SOUND=m CONFIG_SND=m @@ -216,13 +201,10 @@ CONFIG_SND_OMAP_SOC_OMAP3_PANDORA=m CONFIG_USB=y CONFIG_USB_DEBUG=y CONFIG_USB_ANNOUNCE_NEW_DEVICES=y -CONFIG_USB_DEVICEFS=y CONFIG_USB_MON=y CONFIG_USB_WDM=y CONFIG_USB_STORAGE=y -CONFIG_USB_LIBUSUAL=y CONFIG_USB_TEST=y -CONFIG_USB_PHY=y CONFIG_NOP_USB_XCEIV=y CONFIG_USB_GADGET=y CONFIG_USB_GADGET_DEBUG=y @@ -232,7 +214,6 @@ CONFIG_USB_ZERO=m CONFIG_MMC=y CONFIG_MMC_UNSAFE_RESUME=y CONFIG_SDIO_UART=y -CONFIG_MMC_ARMMMCI=y CONFIG_MMC_OMAP=y CONFIG_MMC_OMAP_HS=y CONFIG_NEW_LEDS=y @@ -252,11 +233,6 @@ CONFIG_RTC_DRV_OMAP=y CONFIG_DMADEVICES=y CONFIG_TI_EDMA=y CONFIG_DMA_OMAP=y -CONFIG_TI_SOC_THERMAL=y -CONFIG_TI_THERMAL=y -CONFIG_OMAP4_THERMAL=y -CONFIG_OMAP5_THERMAL=y -CONFIG_DRA752_THERMAL=y CONFIG_EXT2_FS=y CONFIG_EXT3_FS=y # CONFIG_EXT3_FS_XATTR is not set @@ -275,23 +251,18 @@ CONFIG_JFFS2_RUBIN=y CONFIG_UBIFS_FS=y CONFIG_CRAMFS=y CONFIG_NFS_FS=y -CONFIG_NFS_V3=y CONFIG_NFS_V3_ACL=y CONFIG_NFS_V4=y CONFIG_ROOT_NFS=y -CONFIG_PARTITION_ADVANCED=y CONFIG_NLS_CODEPAGE_437=y CONFIG_NLS_ISO8859_1=y CONFIG_PRINTK_TIME=y +CONFIG_DEBUG_INFO=y CONFIG_MAGIC_SYSRQ=y -CONFIG_DEBUG_KERNEL=y CONFIG_SCHEDSTATS=y CONFIG_TIMER_STATS=y CONFIG_PROVE_LOCKING=y -CONFIG_DEBUG_SPINLOCK_SLEEP=y # CONFIG_DEBUG_BUGVERBOSE is not set -CONFIG_DEBUG_INFO=y -# CONFIG_RCU_CPU_STALL_DETECTOR is not set CONFIG_SECURITY=y CONFIG_CRYPTO_MICHAEL_MIC=y # CONFIG_CRYPTO_ANSI_CPRNG is not set @@ -300,9 +271,6 @@ CONFIG_CRC_T10DIF=y CONFIG_CRC_ITU_T=y CONFIG_CRC7=y CONFIG_LIBCRC32C=y -CONFIG_SOC_OMAP5=y -CONFIG_TI_DAVINCI_MDIO=y -CONFIG_TI_DAVINCI_CPDMA=y -CONFIG_TI_CPSW=y -CONFIG_AT803X_PHY=y -CONFIG_SOC_DRA7XX=y +CONFIG_FONTS=y +CONFIG_FONT_8x8=y +CONFIG_FONT_8x16=y From 487e5f2868f16101eb0681ef4781e0c3dc0027b8 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 11 Oct 2013 09:18:21 -0700 Subject: [PATCH 522/523] ARM: OMAP2+: Add WLAN modules and of_serial to omap2plus_defconfig Many boards have either WL12XX or MWIFIEX, so let's build modules for those by default. This also makes it easier to test WLAN on pandaboard to avoid regressions like we had with the move to device tree based booting. And at least the zoom boards need the of_serial for the UARTs connected to the GPMC bus. Signed-off-by: Tony Lindgren --- arch/arm/configs/omap2plus_defconfig | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig index 9549d6f29b50..dad68166520f 100644 --- a/arch/arm/configs/omap2plus_defconfig +++ b/arch/arm/configs/omap2plus_defconfig @@ -118,6 +118,14 @@ CONFIG_LIBERTAS=m CONFIG_LIBERTAS_USB=m CONFIG_LIBERTAS_SDIO=m CONFIG_LIBERTAS_DEBUG=y +CONFIG_WL_TI=y +CONFIG_WL12XX=m +CONFIG_WL18XX=m +CONFIG_WLCORE_SPI=m +CONFIG_WLCORE_SDIO=m +CONFIG_MWIFIEX=m +CONFIG_MWIFIEX_SDIO=m +CONFIG_MWIFIEX_USB=m CONFIG_INPUT_JOYDEV=y CONFIG_INPUT_EVDEV=y CONFIG_KEYBOARD_GPIO=y @@ -136,6 +144,7 @@ CONFIG_SERIAL_8250_MANY_PORTS=y CONFIG_SERIAL_8250_SHARE_IRQ=y CONFIG_SERIAL_8250_DETECT_IRQ=y CONFIG_SERIAL_8250_RSA=y +CONFIG_SERIAL_OF_PLATFORM=y CONFIG_SERIAL_OMAP=y CONFIG_SERIAL_OMAP_CONSOLE=y CONFIG_HW_RANDOM=y From 8d71528343c69ce387bd5fdb4fd8dc2b9f69d97c Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 11 Oct 2013 15:41:25 -0700 Subject: [PATCH 523/523] ARM: configs: omap2plus_defconfig: enable dwc3 and dependencies DWC3 enables USB3 functionality for OMAP5 boards, it's safe to enable those drivers in omap2plus_defconfig. Signed-off-by: Felipe Balbi Acked-by: Tony Lindgren Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Benoit Cousson [tony@atomide.com: updated against other defconfig changes] Signed-off-by: Tony Lindgren --- arch/arm/configs/omap2plus_defconfig | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig index dad68166520f..98a50c309b90 100644 --- a/arch/arm/configs/omap2plus_defconfig +++ b/arch/arm/configs/omap2plus_defconfig @@ -76,6 +76,7 @@ CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y CONFIG_DMA_CMA=y +CONFIG_OMAP_OCP2SCP=y CONFIG_CONNECTOR=y CONFIG_MTD=y CONFIG_MTD_CMDLINE_PARTS=y @@ -168,9 +169,11 @@ CONFIG_DRA752_THERMAL=y CONFIG_WATCHDOG=y CONFIG_OMAP_WATCHDOG=y CONFIG_TWL4030_WATCHDOG=y +CONFIG_MFD_PALMAS=y CONFIG_MFD_TPS65217=y CONFIG_MFD_TPS65910=y CONFIG_TWL6040_CORE=y +CONFIG_REGULATOR_PALMAS=y CONFIG_REGULATOR_TPS65023=y CONFIG_REGULATOR_TPS6507X=y CONFIG_REGULATOR_TPS65217=y @@ -213,8 +216,11 @@ CONFIG_USB_ANNOUNCE_NEW_DEVICES=y CONFIG_USB_MON=y CONFIG_USB_WDM=y CONFIG_USB_STORAGE=y +CONFIG_USB_DWC3=m CONFIG_USB_TEST=y CONFIG_NOP_USB_XCEIV=y +CONFIG_OMAP_USB2=y +CONFIG_OMAP_USB3=y CONFIG_USB_GADGET=y CONFIG_USB_GADGET_DEBUG=y CONFIG_USB_GADGET_DEBUG_FILES=y @@ -242,6 +248,8 @@ CONFIG_RTC_DRV_OMAP=y CONFIG_DMADEVICES=y CONFIG_TI_EDMA=y CONFIG_DMA_OMAP=y +CONFIG_EXTCON=y +CONFIG_EXTCON_PALMAS=y CONFIG_EXT2_FS=y CONFIG_EXT3_FS=y # CONFIG_EXT3_FS_XATTR is not set