Javier Martin f6ad0a4813 mmc: mxcmmc: fix bug that may block a data transfer forever ... The problem can be easily reproduced using a script that loops copying a file in an SD card to another place in the same SD card and its related to read transfers. This only happens with DMA enabled. This is related to the fact that, when reading, an MMC irq signals the fact that all data from the SD card has been copied to the internal buffers. However, it doesn't signal whether the DMA transfer that is in charge of moving data from these internal buffers to RAM has finished or not. Thus, calling dmaengine_terminate_all() in the MMC irq routine can cancel an ongoing DMA transfer leaving some data in the internal buffers that produces an accumulative effect which, in the end, blocks a read data transfer forever. The following patch watches DMA irq for reading and MMC irqs for writing transfers. The 'dangerous' usage of dmaengine_terminate_all() is removed and a timeout of 10 seconds is added so that the MMC won't block forever anymore. Signed-off-by: Javier Martin <javier.martin@vista-silicon.com> Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Chris Ball <cjb@laptop.org>		2012-10-03 10:05:24 -04:00
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accessibility
acpi	Merge branch 'linux-next' of git://cavan.codon.org.uk/platform-drivers-x86	2012-07-30 11:54:53 -07:00
amba	Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm	2012-07-27 15:14:26 -07:00
ata	ARM: arm-soc Marvell Orion device-tree updates	2012-08-02 11:50:24 -07:00
atm
auxdisplay
base	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2012-08-01 10:26:23 -07:00
bcma	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem	2012-07-27 11:15:03 -04:00
block	Merge branch 'for-3.6/drivers' of git://git.kernel.dk/linux-block	2012-08-01 09:06:47 -07:00
bluetooth
cdrom
char	This patch series contains a major revamp of how we collect entropy	2012-07-31 19:07:42 -07:00
clk	clk: validate pointer in __clk_disable()	2012-07-30 17:25:13 -07:00
clocksource	arm-soc: new SoC support	2012-07-23 16:31:31 -07:00
connector
cpufreq	ARM: arm-soc soc updates, take 2	2012-07-30 09:45:53 -07:00
cpuidle	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2012-07-26 14:28:55 -07:00
crypto	This patch series contains a major revamp of how we collect entropy	2012-07-31 19:07:42 -07:00
dca
devfreq
dio
dma	SuperH fixes for 3.6-rc1 merge window	2012-08-02 11:45:42 -07:00
edac	Merge branch 'devel'	2012-07-29 21:11:05 -03:00
eisa
extcon	MFD bits for the 3.6 merge window.	2012-07-30 12:41:17 -07:00
firewire	- Small fixes and optimizations.	2012-07-30 09:32:39 -07:00
firmware	This patch series contains a major revamp of how we collect entropy	2012-07-31 19:07:42 -07:00
gpio	MFD bits for the 3.6 merge window.	2012-07-30 12:41:17 -07:00
gpu	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2012-07-30 10:06:23 -07:00
hid	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2012-07-31 18:47:44 -07:00
hsi
hv	This patch series contains a major revamp of how we collect entropy	2012-07-31 19:07:42 -07:00
hwmon	Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging	2012-07-30 10:10:26 -07:00
hwspinlock
i2c	This patch series contains a major revamp of how we collect entropy	2012-07-31 19:07:42 -07:00
ide
idle	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2012-07-26 14:28:55 -07:00
ieee802154
iio
infiniband	Merge branches 'cma', 'ipoib', 'ocrdma' and 'qib' into for-next	2012-07-30 07:47:27 -07:00
input	This patch series contains a major revamp of how we collect entropy	2012-07-31 19:07:42 -07:00
iommu	IOMMU Updates for Linux v3.6-rc1	2012-07-24 16:24:11 -07:00
isdn	mISDN: Bugfix only few bytes are transfered on a connection	2012-07-29 23:18:30 -07:00
leds	leds-lp8788: forgotten unlock at lp8788_led_work	2012-07-27 08:16:07 +08:00
lguest
macintosh
md	Additional md update for 3.6	2012-08-02 11:34:40 -07:00
media	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2012-07-31 18:47:44 -07:00
memory
memstick
message	drivers/message/i2o/i2o_config.c: bound allocation	2012-07-30 17:25:17 -07:00
mfd	This patch series contains a major revamp of how we collect entropy	2012-07-31 19:07:42 -07:00
misc	Merge branch 'akpm' (Andrew's patch-bomb)	2012-07-30 17:25:34 -07:00
mmc	mmc: mxcmmc: fix bug that may block a data transfer forever	2012-10-03 10:05:24 -04:00
mtd	Merge branch 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm	2012-08-01 16:41:07 -07:00
net	Merge branch 'for-linus-3.6' of git://dev.laptop.org/users/dilinger/linux-olpc	2012-08-02 11:52:39 -07:00
nfc
nubus
of	Devicetree updates for 3.6	2012-07-24 14:07:22 -07:00
oprofile
parisc	PCI changes for the 3.6 merge window:	2012-07-24 16:17:07 -07:00
parport
pci	PCI changes for the 3.6 merge window:	2012-07-24 16:17:07 -07:00
pcmcia	Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm	2012-07-27 15:14:26 -07:00
pinctrl	Pin control changes for v3.6:	2012-07-24 14:05:46 -07:00
platform	Platform: OLPC: move global variables into priv struct	2012-07-31 23:27:31 -04:00
pnp
power	Merge branch 'for-linus-3.6' of git://dev.laptop.org/users/dilinger/linux-olpc	2012-08-02 11:52:39 -07:00
pps	pps: return PTR_ERR on error in device_create	2012-07-30 17:25:21 -07:00
ps3
ptp
pwm	pwm: pwm-tiehrpwm: PWM driver support for EHRPWM	2012-07-26 07:45:20 +02:00
rapidio
regulator	regulator: Fix an s5m8767 build failure	2012-07-31 00:51:09 +02:00
remoteproc	A batch of remoteproc patches for 3.6:	2012-07-26 16:19:08 -07:00
rpmsg	A batch of remoteproc patches for 3.6:	2012-07-26 16:19:08 -07:00
rtc	Merge branch 'akpm' (Andrew's patch-bomb)	2012-07-31 19:25:39 -07:00
s390	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-07-26 18:09:01 -07:00
sbus
scsi	Merge branch 'for-3.6/core' of git://git.kernel.dk/linux-block	2012-08-01 09:02:41 -07:00
sfi
sh	Merge branch 'common/irqdomain' into sh-latest	2012-08-01 17:14:52 +09:00
sn
spi	Merge branch 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm	2012-08-01 16:41:07 -07:00
ssb
staging	Merge branch 'for-linus-3.6' of git://dev.laptop.org/users/dilinger/linux-olpc	2012-08-02 11:52:39 -07:00
target	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2012-08-01 10:26:23 -07:00
tc
thermal	The tag contains just a few battery-related changes for v3.6. It's is	2012-07-31 18:08:25 -07:00
tty	serial: sh-sci: fix compilation breakage, when DMA is enabled	2012-08-01 13:48:54 +09:00
uio
usb	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2012-08-01 10:26:23 -07:00
uwb
vfio	vfio: Add PCI device driver	2012-07-31 08:16:24 -06:00
vhost
video	fbdev updates for 3.6	2012-08-01 10:45:12 -07:00
virt
virtio
vlynq
vme
w1	Driver core merge for 3.6-rc1	2012-07-26 11:25:33 -07:00
watchdog	ARM: arm-soc Marvell Orion device-tree updates	2012-08-02 11:50:24 -07:00
xen	PCI changes for the 3.6 merge window:	2012-07-24 16:17:07 -07:00
zorro
Kconfig	vfio: VFIO core	2012-07-31 08:16:22 -06:00
Makefile	vfio: VFIO core	2012-07-31 08:16:22 -06:00