Граф коммитов

588701 Коммитов

Автор SHA1 Сообщение Дата
Bob Copeland 749329594b mac80211: mesh: fix crash in mesh_path_timer
The mesh_path_reclaim() function, called from an rcu callback, cancels
the mesh_path_timer associated with a mesh path.  Unfortunately, this
call can happen much later, perhaps after the hash table itself is
destroyed.

Such a situation led to the following crash in mesh_path_send_to_gates()
when dereferencing the tbl pointer:

[   23.901661] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
[   23.905516] IP: [<ffffffff814c910b>] mesh_path_send_to_gates+0x2b/0x740
[   23.908757] PGD 99ca067 PUD 99c4067 PMD 0
[   23.910789] Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
[   23.913485] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.5.0-rc6-wt+ #43
[   23.916675] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[   23.920471] task: ffffffff81685500 ti: ffffffff81678000 task.ti: ffffffff81678000
[   23.922619] RIP: 0010:[<ffffffff814c910b>]  [<ffffffff814c910b>] mesh_path_send_to_gates+0x2b/0x740
[   23.925237] RSP: 0018:ffff88000b403d30  EFLAGS: 00010286
[   23.926739] RAX: 0000000000000000 RBX: ffff880009bc0d20 RCX: 0000000000000102
[   23.928796] RDX: 000000000000002e RSI: 0000000000000001 RDI: ffff880009bc0d20
[   23.930895] RBP: ffff88000b403e18 R08: 0000000000000001 R09: 0000000000000001
[   23.932917] R10: 0000000000000000 R11: 0000000000000001 R12: ffff880009c20940
[   23.936370] R13: ffff880009bc0e70 R14: ffff880009c21c40 R15: ffff880009bc0d20
[   23.939823] FS:  0000000000000000(0000) GS:ffff88000b400000(0000) knlGS:0000000000000000
[   23.943688] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[   23.946429] CR2: 0000000000000008 CR3: 00000000099c5000 CR4: 00000000000006b0
[   23.949861] Stack:
[   23.950840]  000000000000002e ffff880009c20940 ffff88000b403da8 ffffffff8109e551
[   23.954467]  ffffffff82711be2 000000000000002e 0000000000000000 ffffffff8166a5f5
[   23.958141]  0000000000685ce8 0000000000000246 ffff880009bc0d20 ffff880009c20940
[   23.961801] Call Trace:
[   23.962987]  <IRQ>
[   23.963963]  [<ffffffff8109e551>] ? vprintk_emit+0x351/0x5e0
[   23.966782]  [<ffffffff8109e8ff>] ? vprintk_default+0x1f/0x30
[   23.969529]  [<ffffffff810ffa41>] ? printk+0x48/0x50
[   23.971956]  [<ffffffff814ceef3>] mesh_path_timer+0x133/0x160
[   23.974707]  [<ffffffff814cedc0>] ? mesh_nexthop_resolve+0x230/0x230
[   23.977775]  [<ffffffff810b04ee>] call_timer_fn+0xce/0x330
[   23.980448]  [<ffffffff810b0425>] ? call_timer_fn+0x5/0x330
[   23.983126]  [<ffffffff814cedc0>] ? mesh_nexthop_resolve+0x230/0x230
[   23.986091]  [<ffffffff810b097c>] run_timer_softirq+0x22c/0x390

Instead of cancelling in the RCU callback, set a new flag to prevent the
timer from being rearmed, and then cancel the timer synchronously when
freeing the mesh path.  This leaves mesh_path_reclaim() doing nothing
but kfree, so switch to kfree_rcu().

Fixes: 3b302ada7f0a ("mac80211: mesh: move path tables into if_mesh")
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 21:34:49 +02:00
Ayala Beker 52cfa1d614 mac80211: track and tell driver about GO client P2P PS abilities
Legacy clients don't support P2P power save mechanism, and thus if a P2P GO
has a legacy client connected to it, it should disable P2P PS mechanisms.
Let the driver know about this with a new bss_conf parameter.

Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 21:34:49 +02:00
Ayala Beker 17b9424786 cfg80211: allow userspace to specify client P2P PS support
Legacy clients don't support P2P power save mechanisms, and thus
if a P2P GO has a legacy client connected to it, it has to make
some changes in the PS behavior.

To handle this, add an attribute to specify whether a station supports
P2P PS or not. If the attribute was not specified cfg80211 will assume
that station supports it for P2P GO interface, and does NOT support it
for AP interface, matching the current assumptions in the code.

Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 21:34:47 +02:00
Johannes Berg b100e5d622 mac80211: avoid useless memory write on each frame RX
In the likely case that probe_count is 0, don't write to the
memory there.

Also use ifmgd consistently in the function, instead of using
sdata->u.mgd as well.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 21:34:21 +02:00
Johannes Berg 2c61cf9c56 mac80211: fix cipher scheme function name
The code is only used with iwlwifi, but still should have proper
mac80211 naming scheme; fix that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 12:12:41 +02:00
Johannes Berg c84387d2f2 mac80211: clean up station flags debugfs
Avoid the really strange %s%s%s expression, use an array
of flag names and check that all flags are present.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 12:12:26 +02:00
Avraham Stern 3c5bcb2e19 ieee80211: support parsing Fine Timing Measurement action frame
Add definition for Fine Timing Measurement (FTM) frame format
as defined in IEEE802.11-REVmcD5.0 section 9.6.8.33

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 12:12:12 +02:00
Johannes Berg 602fae425c mac80211: don't start dynamic PS timer if not needed
If the device implements dynamic PS itself, there's no need
to ever start the dynamic powersave timer on RX.

While at it, fix up some indentation in this code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 12:11:54 +02:00
Johannes Berg fc4a25c5b7 mac80211: remove sta_info debugfs sub-struct
Since the previous patch, the struct only has a single member,
so remove the struct and leave just the single member.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 11:59:05 +02:00
Mohammed Shafi Shajakhan 96f321c9d4 mac80211: Remove unused variable in per STA debugfs struct
Remove unused variable in per STA debugfs structure, 'commit 34e895075e
("mac80211: allow station add/remove to sleep")' removed the only user of
'add_has_run'.

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 11:57:11 +02:00
Sara Sharon 1e0bbebaae mac80211: enable starting BA session with custom timeout
Currently the debugfs entry for starting aggregation session
starts it with timeout of 5 seconds. Allow opening a session
with a custom timeout (according to spec 0 is no timeout).
while at it, refactor the function and remove the magic numbers.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 11:46:05 +02:00
Sara Sharon e03521232d mac80211: add NETIF_F_RXCSUM to features white list
NETIF_F_RXCSUM is not in the white list, though some
drivers may want to set it in order to enable seeing the
actual RX checksum status in ethtool.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 11:45:51 +02:00
Emmanuel Grumbach f278ce4ffa mac80211: Set global RRM capability
Allow publishing RRM capabilities for features that are not
HW dependent.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 11:44:46 +02:00
Akira Moroo 2aa4d45635 cfg80211: fix kernel-doc struct name
This patch fix a structure name mismatch in cfg80211.h.

Signed-off-by: Moroo Akira <retrage01@gmail.com>
Reviewed-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 11:40:52 +02:00
Felix Fietkau 06171e9c0b mac80211: minstrel_ht: improve sample rate skip logic
There were a few issues that were slowing down the process of finding
the optimal rate, especially on devices with multi-rate retry
limitations:

When max_tp_rate[0] was slower than max_tp_rate[1], the code did not
sample max_tp_rate[1], which would often allow it to switch places with
max_tp_rate[0] (e.g. if only the first sampling attempts were bad, but the
rate is otherwise good).

Also, sample attempts of rates between max_tp_rate[0] and [1] were being
ignored in this case, because the code only checked if the rate was
slower than [1].

Fix this by checking against the fastest / second fastest max_tp_rate
instead of assuming a specific order between the two.

In my tests this patch significantly reduces the time until minstrel_ht
finds the optimal rate right after assoc

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 11:40:06 +02:00
Felix Fietkau 07310a6314 mac80211: do not pass injected frames without a valid rate to the driver
Fall back to rate control if the requested bitrate was not found.

Fixes: dfdfc2beb0 ("mac80211: Parse legacy and HT rate in injected frames")
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:58:21 +02:00
Sven Eckelmann f66b60f652 mac80211: fix parsing of 40Mhz in injected radiotap header
The MCS bandwidth part of the radiotap header is 2 bits wide. The full 2
bit have to compared against IEEE80211_RADIOTAP_MCS_BW_40 and not only if
the first bit is set. Otherwise IEEE80211_RADIOTAP_MCS_BW_40 can be
confused with IEEE80211_RADIOTAP_MCS_BW_20U.

Fixes: dfdfc2beb0 ("mac80211: Parse legacy and HT rate in injected frames")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:58:16 +02:00
Arend van Spriel 38de03d2a2 nl80211: add feature for BSS selection support
Introducing a new feature that the driver can use to
indicate the driver/firmware supports configuration of BSS
selection criteria upon CONNECT command. This can be useful
when multiple BSS-es are found belonging to the same ESS,
ie. Infra-BSS with same SSID. The criteria can then be used to
offload selection of a preferred BSS.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Lei Zhang <leizh@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
[move wiphy support check into parse_bss_select()]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:56:34 +02:00
Sara Sharon f59374eb42 mac80211: synchronize driver rx queues before removing a station
Some devices, like iwlwifi, have RSS queues. This may cause a
situation where a disassociation is handled in control path and
results in station removal while there are prior RX frames
that were still not processed in other queues. When they will
be processed the station will be gone, and the frames will be
dropped.
Add a synchronization interface to avoid that. When driver returns
from the synchronization mac80211 may remove the station.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:56:34 +02:00
Bob Copeland 60854fd945 mac80211: mesh: convert path table to rhashtable
In the time since the mesh path table was implemented as an
RCU-traversable, dynamically growing hash table, a generic RCU
hashtable implementation was added to the kernel.

Switch the mesh path table over to rhashtable to remove some code
and also gain some features like automatic shrinking.

Cc: Thomas Graf <tgraf@suug.ch>
Cc: netdev@vger.kernel.org
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:56:33 +02:00
Bob Copeland 8f6fd83c6c rhashtable: accept GFP flags in rhashtable_walk_init
In certain cases, the 802.11 mesh pathtable code wants to
iterate over all of the entries in the forwarding table from
the receive path, which is inside an RCU read-side critical
section.  Enable walks inside atomic sections by allowing
GFP_ATOMIC allocations for the walker state.

Change all existing callsites to pass in GFP_KERNEL.

Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
[also adjust gfs2/glock.c and rhashtable tests]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:56:32 +02:00
Bob Copeland 947c2a0ecc mac80211: mesh: embed known gates list in struct mesh_path
The mesh path table uses a struct mesh_node in its hlists in
order to support a resizable hash table: the mesh_node provides
an indirection to the actual mesh path so that two different
bucket lists can point to the same path entry.

However, for the known gates list, we don't need this indirection
because there is ever only one list.  So we can just embed the
hlist_node in the mesh path itself, which simplifies things a bit
and saves a linear search whenever we need to find an item in
the list.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:56:32 +02:00
Bob Copeland b15dc38b98 mac80211: mesh: factor out common mesh path allocation code
Remove duplicate code to allocate and initialize a mesh
path or mesh proxy path.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:56:31 +02:00
Bob Copeland 443954815b mac80211: mesh: don't hash sdata in mpath tables
Now that the sdata pointer is the same for all entries of a
path table, hashing it is pointless, so hash only the address.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:56:31 +02:00
Bob Copeland 2bdaf386f9 mac80211: mesh: move path tables into if_mesh
The mesh path and mesh gate hashtables are global, containing
all of the mpaths for every mesh interface, but the paths are
all tied logically to a single interface.  The common case is
just a single mesh interface, so optimize for that by moving
the global hashtable into the per-interface struct.

Doing so allows us to drop sdata pointer comparisons inside
the lookups and also saves a few bytes of BSS and data.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:56:30 +02:00
Jouni Malinen 12880d1694 mac80211_hwsim: Support a hw scan request for a specific BSSID
If the hw scan request specifies a single BSSID, use that value instead
of the wildcard BSSID in the Probe Request frames.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:56:29 +02:00
Jouni Malinen e345f44f2b mac80211: Support a scan request for a specific BSSID
If the cfg80211 scan trigger operation specifies a single BSSID, use
that value instead of the wildcard BSSID in the Probe Request frames.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:56:28 +02:00
Jouni Malinen 818965d391 cfg80211: Allow a scan request for a specific BSSID
This allows scans for a specific BSSID to be optimized by the user space
application by requesting the driver to set the Probe Request frame
BSSID field (Address 3) to the specified BSSID instead of the wildcard
BSSID. This prevents other APs from replying which reduces airtime need
and latency in getting the response from the target AP through.

This is an optimization and as such, it is acceptable for some of the
drivers not to support the mechanism. If not supported, the wildcard
BSSID will be used and more responses may be received.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:56:28 +02:00
Sven Eckelmann 5c05803a3e mac80211: document only injected *_RADIOTAP_* flags
Not the internal flags but the radiotap flags are parsed when the monitor
injected frames are prepared for transmission. Thus the documentation
should only document these.

Reported-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Reported-by: Johannes Berg <johannes@sipsolutions.net>
Fixes: dfdfc2beb0 ("mac80211: Parse legacy and HT rate in injected frames")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:48:57 +02:00
Sara Sharon f980ebc058 mac80211: allow not sending MIC up from driver for HW crypto
When HW crypto is used, there's no need for the CCMP/GCMP MIC to
be available to mac80211, and the hardware might have removed it
already after checking. The MIC is also useless to have when the
frame is already decrypted, so allow indicating that it's not
present.

Since we are running out of bits in mac80211_rx_flags, make
the flags field a u64.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:48:56 +02:00
Johannes Berg 162dd6a725 mac80211: allow drivers to report CLOCK_BOOTTIME for scan results
This was requested by Android, and the appropriate cfg80211 API
had been added by Dmitry. Support it in mac80211, allowing drivers
to provide the timestamp.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:48:55 +02:00
Lorenzo Bianconi 646e76bb5d mac80211: parse VHT info in injected frames
Add VHT radiotap parsing support to ieee80211_parse_tx_radiotap().
That capability has been tested using a d-link dir-860l rev b1 running
OpenWrt trunk and mt76 driver

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:48:54 +02:00
João Paulo Rechi Vita 1948b2a2ec rfkill: Use switch to demux userspace operations
Using a switch to handle different ev.op values in rfkill_fop_write()
makes the code easier to extend, as out-of-range values can always be
handled by the default case.

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
[roll in fix for RFKILL_OP_CHANGE from Jouni]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:48:53 +02:00
Johannes Berg 98bd147d79 wext: unregister_pernet_subsys() on notifier registration failure
If register_netdevice_notifier() fails (which in practice it can't
right now), we should call unregister_pernet_subsys(). Do that.

Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:48:44 +02:00
Linus Torvalds 05cf8077e5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Missing device reference in IPSEC input path results in crashes
    during device unregistration.  From Subash Abhinov Kasiviswanathan.

 2) Per-queue ISR register writes not being done properly in macb
    driver, from Cyrille Pitchen.

 3) Stats accounting bugs in bcmgenet, from Patri Gynther.

 4) Lightweight tunnel's TTL and TOS were swapped in netlink dumps, from
    Quentin Armitage.

 5) SXGBE driver has off-by-one in probe error paths, from Rasmus
    Villemoes.

 6) Fix race in save/swap/delete options in netfilter ipset, from
    Vishwanath Pai.

 7) Ageing time of bridge not set properly when not operating over a
    switchdev device.  Fix from Haishuang Yan.

 8) Fix GRO regression wrt nested FOU/GUE based tunnels, from Alexander
    Duyck.

 9) IPV6 UDP code bumps wrong stats, from Eric Dumazet.

10) FEC driver should only access registers that actually exist on the
    given chipset, fix from Fabio Estevam.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (73 commits)
  net: mvneta: fix changing MTU when using per-cpu processing
  stmmac: fix MDIO settings
  Revert "stmmac: Fix 'eth0: No PHY found' regression"
  stmmac: fix TX normal DESC
  net: mvneta: use cache_line_size() to get cacheline size
  net: mvpp2: use cache_line_size() to get cacheline size
  net: mvpp2: fix maybe-uninitialized warning
  tun, bpf: fix suspicious RCU usage in tun_{attach, detach}_filter
  net: usb: cdc_ncm: adding Telit LE910 V2 mobile broadband card
  rtnl: fix msg size calculation in if_nlmsg_size()
  fec: Do not access unexisting register in Coldfire
  net: mvneta: replace MVNETA_CPU_D_CACHE_LINE_SIZE with L1_CACHE_BYTES
  net: mvpp2: replace MVPP2_CPU_D_CACHE_LINE_SIZE with L1_CACHE_BYTES
  net: dsa: mv88e6xxx: Clear the PDOWN bit on setup
  net: dsa: mv88e6xxx: Introduce _mv88e6xxx_phy_page_{read, write}
  bpf: make padding in bpf_tunnel_key explicit
  ipv6: udp: fix UDP_MIB_IGNOREDMULTI updates
  bnxt_en: Fix ethtool -a reporting.
  bnxt_en: Fix typo in bnxt_hwrm_set_pause_common().
  bnxt_en: Implement proper firmware message padding.
  ...
2016-04-01 20:03:33 -05:00
Linus Torvalds cf78031a65 A handful of const updates for reset ops and a couple fixes to the
newly introduced IPQ4019 clock driver.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "A handful of const updates for reset ops and a couple fixes to the
  newly introduced IPQ4019 clock driver"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: qcom: ipq4019: add some fixed clocks for ddrppl and fepll
  clk: qcom: ipq4019: switch remaining defines to enums
  clk: qcom: Make reset_control_ops const
  clk: tegra: Make reset_control_ops const
  clk: sunxi: Make reset_control_ops const
  clk: atlas7: Make reset_control_ops const
  clk: rockchip: Make reset_control_ops const
  clk: mmp: Make reset_control_ops const
  clk: mediatek: Make reset_control_ops const
2016-04-01 19:57:13 -05:00
Linus Torvalds 1826907c1f Power management and ACPI material for v4.6-rc2
Just one fix for a nasty boot failure on some systems based on
 Intel Skylake that shipped with broken firmware where enabling
 hardware-coordinated P-states management (HWP) causes a faulty
 interrupt handler in SMM to be invoked and crash the system
 (Srinivas Pandruvada).
 
 /
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Merge tag 'pm+acpi-4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI fix from Rafael J. Wysocki:
 "Just one fix for a nasty boot failure on some systems based on Intel
  Skylake that shipped with broken firmware where enabling
  hardware-coordinated P-states management (HWP) causes a faulty
  interrupt handler in SMM to be invoked and crash the system (Srinivas
  Pandruvada)"

* tag 'pm+acpi-4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / processor: Request native thermal interrupt handling via _OSC
2016-04-01 19:52:10 -05:00
Linus Torvalds 4e19fd9395 Merge branch 'akpm' (patches from Andrew)
Merge fixes from Andrew Morton:
 "11 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  .mailmap: add Christophe Ricard
  Make CONFIG_FHANDLE default y
  mm/page_isolation.c: fix the function comments
  oom, oom_reaper: do not enqueue task if it is on the oom_reaper_list head
  mm/page_isolation: fix tracepoint to mirror check function behavior
  mm/rmap: batched invalidations should use existing api
  x86/mm: TLB_REMOTE_SEND_IPI should count pages
  mm: fix invalid node in alloc_migrate_target()
  include/linux/huge_mm.h: return NULL instead of false for pmd_trans_huge_lock()
  mm, kasan: fix compilation for CONFIG_SLAB
  MAINTAINERS: orangefs mailing list is subscribers-only
2016-04-01 19:31:19 -05:00
Rafael J. Wysocki 8fbd4ade93 Merge branch 'acpi-processor'
* acpi-processor:
  ACPI / processor: Request native thermal interrupt handling via _OSC
2016-04-02 01:17:36 +02:00
Linus Torvalds 82d2a348bb Merge branch 'for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
 "This has a few fixes Dave Sterba had queued up.  These are all pretty
  small, but since they were tested I decided against waiting for more"

* 'for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  btrfs: transaction_kthread() is not freezable
  btrfs: cleaner_kthread() doesn't need explicit freeze
  btrfs: do not write corrupted metadata blocks to disk
  btrfs: csum_tree_block: return proper errno value
2016-04-01 18:08:34 -05:00
Linus Torvalds 22fed39775 Two bugfixes for OrangeFS.
One is a reference counting bug and the other is a typo in client
 minimum version.
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Merge tag 'for-linus' of git://github.com/martinbrandenburg/linux

Pull OrangeFS fixes from Martin Brandenburg:
 "Two bugfixes for OrangeFS.

  One is a reference counting bug and the other is a typo in client
  minimum version"

* tag 'for-linus' of git://github.com/martinbrandenburg/linux:
  orangefs: minimum userspace version is 2.9.3
  orangefs: don't put readdir slot twice
2016-04-01 17:17:32 -05:00
Linus Torvalds 4fff505660 arm64 fixes:
- Fix oops when patching in alternative sequences on big-endian CPUs
 - Reconcile asm/perf_event.h after merge window fallout with KVM ARM
 - Defconfig updates
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:

 - fix oops when patching in alternative sequences on big-endian CPUs

 - reconcile asm/perf_event.h after merge window fallout with KVM ARM

 - defconfig updates

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: defconfig: updates for 4.6
  arm64: perf: Move PMU register related defines to asm/perf_event.h
  arm64: opcodes.h: Add arm big-endian config options before including arm header
2016-04-01 17:15:51 -05:00
Linus Torvalds 2708d17d07 sound fixes for 4.6-rc2
A collection of small fixes:
 - A fix in ALSA timer core to avoid possible BUG() trigger
 - A fix in ALSA timer core 32bit compat layer
 - A few HD-audio quirks for ASUS and HP machines
 - AMD HD-audio HDMI controller quirks
 - Fixes of USB-audio double-free at some error paths
 - A fix for memory leak in DICE driver at hotunplug
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Merge tag 'sound-4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A collection of small fixes:

   - a fix in ALSA timer core to avoid possible BUG() trigger
   - a fix in ALSA timer core 32bit compat layer
   - a few HD-audio quirks for ASUS and HP machines
   - AMD HD-audio HDMI controller quirks
   - fixes of USB-audio double-free at some error paths
   - a fix for memory leak in DICE driver at hotunplug"

* tag 'sound-4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: timer: Use mod_timer() for rearming the system timer
  ALSA: hda - fix front mic problem for a HP desktop
  ALSA: usb-audio: Fix double-free in error paths after snd_usb_add_audio_stream() call
  ALSA: hda: add AMD Polaris-10/11 AZ PCI IDs with proper driver caps
  ALSA: dice: fix memory leak when unplugging
  ALSA: hda - Apply fix for white noise on Asus N550JV, too
  ALSA: hda - Fix white noise on Asus N750JV headphone
  ALSA: hda - Asus N750JV external subwoofer fixup
  ALSA: timer: fix gparams ioctl compatibility for different architectures
2016-04-01 17:13:23 -05:00
Christophe Ricard 394532e4b6 .mailmap: add Christophe Ricard
Different computers had different settings in the mail client.  Some
contributions appear as Christophe Ricard, others as Christophe RICARD.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-01 17:03:37 -05:00
Andi Kleen f76be61755 Make CONFIG_FHANDLE default y
Newer Fedora and OpenSUSE didn't boot with my standard configuration.
It took me some time to figure out why, in fact I had to write a script
to try different config options systematically.

The problem is that something (systemd) in dracut depends on
CONFIG_FHANDLE, which adds open by file handle syscalls.

While it is set in defconfigs it is very easy to miss when updating
older configs because it is not default y.

Make it default y and also depend on EXPERT, as dracut use is likely
widespread.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Richard Weinberger <richard.weinberger@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-01 17:03:37 -05:00
Neil Zhang ec3b688250 mm/page_isolation.c: fix the function comments
Commit fea85cff11 ("mm/page_isolation.c: return last tested pfn rather
than failure indicator") changed the meaning of the return value.  Let's
change the function comments as well.

Signed-off-by: Neil Zhang <neilzhang1123@hotmail.com>
Cc: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-01 17:03:37 -05:00
Michal Hocko af8e15cc85 oom, oom_reaper: do not enqueue task if it is on the oom_reaper_list head
Commit bb29902a75 ("oom, oom_reaper: protect oom_reaper_list using
simpler way") has simplified the check for tasks already enqueued for
the oom reaper by checking tsk->oom_reaper_list != NULL.  This check is
not sufficient because the tsk might be the head of the queue without
any other tasks queued and then we would simply lockup looping on the
same task.  Fix the condition by checking for the head as well.

Fixes: bb29902a75 ("oom, oom_reaper: protect oom_reaper_list using simpler way")
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-01 17:03:37 -05:00
Lucas Stach bbe3de2560 mm/page_isolation: fix tracepoint to mirror check function behavior
Page isolation has not failed if the fin pfn extends beyond the end pfn
and test_pages_isolated checks this correctly.  Fix the tracepoint to
report the same result as the actual check function.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-01 17:03:37 -05:00
Nadav Amit 858eaaa711 mm/rmap: batched invalidations should use existing api
The recently introduced batched invalidations mechanism uses its own
mechanism for shootdown.  However, it does wrong accounting of
interrupts (e.g., inc_irq_stat is called for local invalidations),
trace-points (e.g., TLB_REMOTE_SHOOTDOWN for local invalidations) and
may break some platforms as it bypasses the invalidation mechanisms of
Xen and SGI UV.

This patch reuses the existing TLB flushing mechnaisms instead.  We use
NULL as mm to indicate a global invalidation is required.

Fixes 72b252aed5 ("mm: send one IPI per CPU to TLB flush all entries after unmapping pages")
Signed-off-by: Nadav Amit <namit@vmware.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-01 17:03:37 -05:00
Nadav Amit 18c98243dd x86/mm: TLB_REMOTE_SEND_IPI should count pages
TLB_REMOTE_SEND_IPI was recently introduced, but it counts bytes instead
of pages.  In addition, it does not report correctly the case in which
flush_tlb_page flushes a page.  Fix it to be consistent with other TLB
counters.

Fixes: 5b74283ab2 ("x86, mm: trace when an IPI is about to be sent")
Signed-off-by: Nadav Amit <namit@vmware.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-01 17:03:37 -05:00