Gerhard Sittig 5df24ea63d spi: mpc512x: improve throughput in the RX/TX func ... change the MPC512x SPI controller's transmission routine to increase throughput: allow the RX byte counter to "lag behind" the TX byte counter while iterating over the transfer's data, only wait for the remaining RX bytes at the very end of the transfer this approach eliminates delays in the milliseconds range, transfer times for e.g. 16MB of SPI flash data dropped from 31s to 9s, correct operation was tested by continuously transferring and comparing data from an SPI flash (more than 200GB in some 45 hours) background information on the motivation: one might assume that all the RX data should have been received when the TX data was sent, given the fact that we are the SPI master and provide all of the clock, but in practise there's a difference the ISR is triggered when the TX FIFO became empty, while transmission of the last item still occurs (from the TX hold and shift registers), sampling RX data on the opposite clock edge compared to the TX data adds another delay (half a bit period), and RX data needs to propagate from the reception buffer to the RX FIFO depending on the specific SoC implementation to cut it short: a difference between TX and RX byte counters during transmission is not just acceptable but should be considered the regular case, only the very end of the transfer needs to make sure that all of the RX data was received before deasserting the chip select and telling the caller that transmission has completed Signed-off-by: Gerhard Sittig <gsi@denx.de> Signed-off-by: Mark Brown <broonie@linaro.org>		2013-06-04 18:22:47 +01:00
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accessibility	…
acpi	aerdrv: Move cper_print_aer() call out of interrupt context	2013-05-30 10:51:20 -07:00
amba	…
ata	drivers/ata: don't check resource with devm_ioremap_resource	2013-05-12 15:19:46 +02:00
atm	atm: he: use mdelay instead of large udelay constants	2013-04-29 13:26:48 -04:00
auxdisplay	…
base	Driver core fixes for 3.10-rc2	2013-05-23 09:27:08 -07:00
bcma	bcma: add more core IDs	2013-05-17 14:31:05 -04:00
block	drivers/block/brd.c: fix brd_lookup_page() race	2013-05-24 16:22:52 -07:00
bluetooth	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2013-05-01 14:08:52 -07:00
bus	…
cdrom	block_device_operations->release() should return void	2013-05-07 02:16:21 -04:00
char	random: fix accounting race condition with lockless irq entropy_count update	2013-05-24 16:22:52 -07:00
clk	clk: mxs: Include clk mxs header file	2013-05-30 18:27:24 -07:00
clocksource	ARM: late Exynos multiplatform changes	2013-05-07 11:28:42 -07:00
connector	…
cpufreq	Power management and ACPI fixes for 3.10-rc3	2013-05-25 20:32:00 -07:00
cpuidle	cpuidle: add maintainer entry	2013-04-26 22:30:25 +02:00
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2013-05-28 10:09:38 -07:00
dca	…
devfreq	…
dio	…
dma	Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma	2013-05-25 20:30:31 -07:00
edac	amd64_edac: Fix bogus sysfs file permissions	2013-05-21 09:13:11 +02:00
eisa	PCI changes for the v3.10 merge window:	2013-04-29 09:30:25 -07:00
extcon	Removal of GENERIC_GPIO for v3.10	2013-05-09 09:59:16 -07:00
firewire	IEEE 1394 (FireWire) subsystem changes:	2013-05-09 10:11:48 -07:00
firmware	efivar: fix oops in efivar_update_sysfs_entries() caused by memory reuse	2013-05-13 20:20:02 +01:00
gpio	GPIO fixes for the v3.10 series:	2013-05-23 18:24:10 -07:00
gpu	fbdev: fixes for 3.10-rc4	2013-06-01 19:53:41 +09:00
hid	HID: debug: fix RCU preemption issue	2013-05-06 13:07:33 +02:00
hsi	…
hv	Drivers: hv: Fix a bug in get_vp_index()	2013-05-21 09:56:55 -07:00
hwmon	hwmon: (tmp401) Drop redundant safety on cache lifetime	2013-05-19 08:19:29 -07:00
hwspinlock	A single patch from Vincent extending OMAP's hwspinlock support to OMAP5.	2013-05-07 14:01:27 -07:00
i2c	Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2013-05-21 11:11:45 -07:00
ide	block_device_operations->release() should return void	2013-05-07 02:16:21 -04:00
idle	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2013-05-11 15:23:17 -07:00
iio	iio: exynos_adc: fix wrong structure extration in suspend and resume	2013-05-22 22:15:20 +01:00
infiniband	ib_srpt: Call target_sess_cmd_list_set_waiting during shutdown_session	2013-05-29 21:30:46 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2013-05-23 13:50:03 -07:00
iommu	IOMMU Updates for Linux v3.10	2013-05-06 14:59:13 -07:00
ipack	…
irqchip	ARM: late Exynos multiplatform changes	2013-05-07 11:28:42 -07:00
isdn	isdn/kcapi: fix a small underflow	2013-05-20 13:38:14 -07:00
leds	drivers/leds/leds-ot200.c: fix error caused by shifted mask	2013-05-24 16:22:51 -07:00
lguest	lguest: clear cached last cpu when guest_set_pgd() called.	2013-05-08 10:49:18 +09:30
macintosh	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2013-05-02 10:16:16 -07:00
mailbox	…
md	dm thin: fix metadata dev resize detection	2013-05-19 18:57:50 +01:00
media	fbdev: fixes for 3.10-rc4	2013-06-01 19:53:41 +09:00
memory	drivers/memory: don't check resource with devm_ioremap_resource	2013-05-18 11:55:52 +02:00
memstick	block_device_operations->release() should return void	2013-05-07 02:16:21 -04:00
message	Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block	2013-05-08 10:13:35 -07:00
mfd	This is the first batch of MFD fixes for 3.10.	2013-05-22 07:18:41 -07:00
misc	char/misc driver fixes for 3.10-rc2	2013-05-23 09:26:32 -07:00
mmc	Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm	2013-05-15 13:37:54 -07:00
mtd	drivers/mtd/nand: don't check resource with devm_ioremap_resource	2013-05-18 11:55:55 +02:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-05-24 08:27:32 -07:00
nfc	…
ntb	NTB: Multiple NTB client fix	2013-05-15 10:58:22 -07:00
nubus	nubus: Kill nubus_proc_detach_device()	2013-05-04 14:47:26 -04:00
of	Device tree bug fixes and documentation updates for v3.10	2013-05-18 10:46:50 -07:00
oprofile	…
parisc	parisc/PCI: lba: fix: convert to pci_create_root_bus() for correct root bus resources (v2)	2013-06-01 14:44:25 +02:00
parport	parisc: parport0: fix this legacy no-device port driver!	2013-06-01 14:46:42 +02:00
pci	aerdrv: Move cper_print_aer() call out of interrupt context	2013-05-30 10:51:20 -07:00
pcmcia	…
pinctrl	pinctrl: pinconf: take the right mutex	2013-05-27 15:53:32 +02:00
platform	- Artem's removal of dead code continues (RPX, MBX860)	2013-05-10 09:09:47 -07:00
pnp	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2013-05-02 10:16:16 -07:00
power	Last minute one-liners: wrong kfree usage fix, module alias fixup and	2013-05-25 20:32:49 -07:00
pps	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-05-01 17:51:54 -07:00
ps3	…
ptp	…
pwm	drivers/pwm: don't check resource with devm_ioremap_resource	2013-05-18 11:55:58 +02:00
rapidio	rapidio/tsi721: fix bug in MSI interrupt handling	2013-05-24 16:22:51 -07:00
regulator	Removal of GENERIC_GPIO for v3.10	2013-05-09 09:59:16 -07:00
remoteproc	This pull request contains:	2013-05-07 14:04:56 -07:00
reset	…
rpmsg	A small pull request consisting of:	2013-05-07 14:02:00 -07:00
rtc	drivers/rtc/rtc-max8998.c: check for pdata presence before dereferencing	2013-05-24 16:22:53 -07:00
s390	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2013-05-21 09:36:46 -07:00
sbus	…
scsi	Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2013-06-01 20:05:20 +09:00
sfi	…
sh	…
sn	…
spi	spi: mpc512x: improve throughput in the RX/TX func	2013-06-04 18:22:47 +01:00
ssb	- Lots of cleanups from Artem, including deletion of some obsolete drivers	2013-05-09 10:15:46 -07:00
ssbi	…
staging	Merge remote-tracking branch 'pfdo/drm-fixes' into drm-next	2013-05-24 10:12:22 +10:00
target	iscsi-target: Fix iscsit_free_cmd() se_cmd->cmd_kref shutdown handling	2013-05-31 01:21:28 -07:00
tc	…
thermal	drivers/thermal: don't check resource with devm_ioremap_resource	2013-05-18 11:57:30 +02:00
tty	ARM: SoC fixes for 3.10-rc	2013-05-24 16:27:37 -07:00
uio	uio: UIO_DMEM_GENIRQ should depend on HAS_DMA	2013-05-21 10:13:23 -07:00
usb	USB fixes for 3.10-rc2	2013-05-23 09:23:32 -07:00
uwb	uwb: rename random32() to prandom_u32()	2013-04-29 18:28:43 -07:00
vfio	vfio updates for v3.10	2013-05-02 14:02:32 -07:00
vhost	Add missing module license tag to vring helpers.	2013-05-08 10:49:03 +09:30
video	atmel_lcdfb: blank the backlight on remove	2013-06-01 03:18:55 +08:00
virt	…
virtio	…
vlynq	…
vme	…
w1	drivers/w1/masters: don't check resource with devm_ioremap_resource	2013-05-18 11:58:03 +02:00
watchdog	drivers/watchdog: don't check resource with devm_ioremap_resource	2013-05-18 11:58:04 +02:00
xen	xenbus_client.c: correct exit path for xenbus_map_ring_valloc_hvm	2013-05-29 15:24:55 -04:00
zorro	proc: Supply PDE attribute setting accessor functions	2013-05-01 17:29:18 -04:00
Kconfig	ARM: arm-soc driver changes for 3.10	2013-05-04 12:31:18 -07:00
Makefile	ARM: arm-soc driver changes for 3.10	2013-05-04 12:31:18 -07:00