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Christian Gmeiner ff1ba3dac0 spi: imx: wait_for_completion_timeout(..) for PIO transfers 
In some rare cases I see the following 'task blocked' information. It
looks like the PIO transfer has some problems and never succeeds. Make
use of wait_for_completion_timeout(..) to detect this case and
return -ETIMEDOUT.

[ 240.246067] INFO: task hexdump:1660 blocked for more than 120 seconds.
[ 240.246089] Not tainted 4.1.17 0000001
[ 240.246099] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 240.246109] hexdump D c0575548 0 1660 1 0x00000000
[ 240.246132] Backtrace:
[ 240.246166] [<c057524c>] (__schedule) from [<c0575a84>] (schedule+0x40/0xa4)
[ 240.246176] r10:00000000 r9:c07f1300 r8:c07b8408 r7:c0576518 r6:7fffffff r5:7fffffff
[ 240.246210] r4:ee972e7c
[ 240.246233] [<c0575a44>] (schedule) from [<c0578544>] (schedule_timeout+0x174/0x274)
[ 240.246254] [<c05783d0>] (schedule_timeout) from [<c0576518>] (wait_for_common+0xc0/0x164)
[ 240.246263] r10:00000000 r9:c07f1300 r8:00000002 r7:00000000 r6:7fffffff r5:ee972e78
[ 240.246294] r4:ee972e7c
[ 240.246314] [<c0576458>] (wait_for_common) from [<c05765dc>] (wait_for_completion+0x20/0x24)
[ 240.246324] r10:ee972e50 r8:00000001 r7:c3976200 r6:ee972c00 r5:ee972e50 r4:c2c87d28
[ 240.246367] [<c05765bc>] (wait_for_completion) from [<c03f6b04>] (spi_imx_transfer+0xe8/0x3cc)
[ 240.246393] [<c03f6a1c>] (spi_imx_transfer) from [<c03f50e4>] (spi_bitbang_transfer_one+0xb4/0x250)
[ 240.246403] r10:ee972e50 r8:00000001 r7:00000000 r6:c2c87da0 r5:00000000 r4:c2c87d28
[ 240.246443] [<c03f5030>] (spi_bitbang_transfer_one) from [<c03f36e8>] (__spi_pump_messages+0x36c/0x6b4)
[ 240.246452] r10:ee9e5010 r9:00000001 r8:ee9e5010 r7:00000000 r6:c2c87da0 r5:c2c87d6c
[ 240.246483] r4:ee972c00
[ 240.246503] [<c03f337c>] (__spi_pump_messages) from [<c03f3b68>] (__spi_sync+0x138/0x1e4)
[ 240.246512] r10:00000000 r9:00000000 r8:c03f25a8 r7:00000000 r6:ee972c00 r5:c3976200
[ 240.246542] r4:c2c87da0
[ 240.246562] [<c03f3a30>] (__spi_sync) from [<c03f3c50>] (spi_sync+0x1c/0x20)
[ 240.246571] r10:00040000 r9:00000000 r8:c3976200 r7:00000000 r6:ee973300 r5:c2c87da0
[ 240.246602] r4:ee973014
[ 240.246623] [<c03f3c34>] (spi_sync) from [<c03f0210>] (m25p80_read+0xf8/0x124)
[ 240.246641] [<c03f0118>] (m25p80_read) from [<c03f1528>] (spi_nor_read+0x64/0x80)
[ 240.246651] r10:00004000 r8:00004000 r7:00000000 r6:00040000 r5:00000000 r4:ee973014
[ 240.246698] [<c03f14c4>] (spi_nor_read) from [<c03cdcb4>] (mtd_read+0x98/0xcc)
[ 240.246708] r7:c2c87ea0 r6:ee973098 r5:00000000 r4:001c0000
[ 240.246740] [<c03cdc1c>] (mtd_read) from [<c03d300c>] (mtdchar_read+0xcc/0x204)
[ 240.246750] r9:ed424000 r8:00000000 r7:b495d018 r6:c2c87f78 r5:00000000 r4:00040000
[ 240.246793] [<c03d2f40>] (mtdchar_read) from [<c013b1c4>] (__vfs_read+0x3c/0xe0)
[ 240.246803] r10:00004000 r9:00000000 r8:c2c87f78 r7:b495d018 r6:c2c87f78 r5:c05c8104
[ 240.246833] r4:c32fe600
[ 240.246852] [<c013b188>] (__vfs_read) from [<c013befc>] (vfs_read+0x98/0x154)
[ 240.246861] r10:00000000 r8:00040000 r7:00004000 r6:c2c87f78 r5:b495d018 r4:c32fe600
[ 240.246899] [<c013be64>] (vfs_read) from [<c013c008>] (SyS_read+0x50/0x90)
[ 240.246908] r10:00000000 r8:00040000 r7:b495d018 r6:00004000 r5:c32fe601 r4:c32fe600
[ 240.246953] [<c013bfb8>] (SyS_read) from [<c000fa60>] (ret_fast_syscall+0x0/0x3c)
[ 240.246962] r9:c2c86000 r8:c000fc04 r7:00000003 r6:00004000 r5:00000000 r4:b495d018

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-06-21 19:52:15 +01:00
..
accessibility
acpi remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
amba
android
ata remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
atm
auxdisplay
base More power management updates for v4.7-rc1 2016-05-25 15:29:21 -07:00
bcma MTD updates for v4.7: 2016-05-24 11:00:20 -07:00
block DAX error handling for 4.7 2016-05-26 19:34:26 -07:00
bluetooth Bluetooth: Add USB ID 13D3:3487 to ath3k 2016-05-13 16:54:59 +02:00
bus Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-05-19 10:02:26 -07:00
cdrom
char Merge branch 'akpm' (patches from Andrew) 2016-05-20 22:31:33 -07:00
clk remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
clocksource Small release overall. 2016-05-19 11:27:09 -07:00
connector
cpufreq remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
cpuidle cpuidle: Fix cpuidle_state_is_coupled() argument in cpuidle_enter() 2016-05-18 02:48:37 +02:00
crypto remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
dax /dev/dax, core: file operations and dax-mmap 2016-05-20 22:02:55 -07:00
dca
devfreq
dio
dma remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
dma-buf
edac Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2016-05-17 17:05:30 -07:00
eisa
extcon
firewire
firmware driver core update for 4.7-rc1 2016-05-20 21:26:15 -07:00
fmc
fpga
gpio remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
gpu remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
hid Merge branch 'for-4.7/wacom' into for-linus 2016-05-17 12:42:27 +02:00
hsi
hv
hwmon Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2016-05-26 09:48:23 -07:00
hwspinlock drivers/hwspinlock: use correct radix tree API 2016-05-20 17:58:30 -07:00
hwtracing Char / Misc driver update for 4.7-rc1 2016-05-20 21:20:31 -07:00
i2c i2c: dev: use after free in detach 2016-05-28 17:37:42 +02:00
ide
idle
iio Staging and IIO driver update for 4.7-rc1 2016-05-20 22:20:48 -07:00
infiniband Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2016-05-28 12:04:17 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2016-05-27 19:14:35 -07:00
iommu remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
ipack
irqchip Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-05-28 16:41:39 -07:00
isdn TTY and Serial driver update for 4.7-rc1 2016-05-20 20:57:27 -07:00
leds pwm: Changes for v4.7-rc1 2016-05-25 10:40:15 -07:00
lguest
lightnvm
macintosh
mailbox
mcb
md Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2016-05-27 14:28:09 -07:00
media Merge branch 'hash' of git://ftp.sciencehorizons.net/linux 2016-05-28 16:15:25 -07:00
memory MTD updates for v4.7: 2016-05-24 11:00:20 -07:00
memstick drivers/memstick/core/mspro_block: use kmemdup 2016-05-23 17:04:14 -07:00
message SCSI misc on 20160517 2016-05-18 16:38:59 -07:00
mfd remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
misc Char / Misc driver update for 4.7-rc1 2016-05-20 21:20:31 -07:00
mmc remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
mtd This pull request contains mostly cleanups and minor 2016-05-27 18:49:29 -07:00
net remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
nfc
ntb
nubus
nvdimm DAX error handling for 4.7 2016-05-26 19:34:26 -07:00
nvme nvme/host: Add missing blk_integrity tag_size + flags assignments 2016-05-17 17:14:21 -06:00
nvmem remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
of MTD updates for v4.7: 2016-05-24 11:00:20 -07:00
oprofile
parisc
parport
pci Char / Misc driver update for 4.7-rc1 2016-05-20 21:20:31 -07:00
pcmcia
perf
phy USB patches for 4.7-rc1 2016-05-20 21:12:25 -07:00
pinctrl drivers/pinctrl/intel/pinctrl-baytrail.c: fix build with gcc-4.4 2016-05-26 15:35:44 -07:00
platform platform/chrome: Driver and binding changes for 4.7 2016-05-28 12:32:01 -07:00
pnp driver core update for 4.7-rc1 2016-05-20 21:26:15 -07:00
power power supply and reset changes for the v4.7 series 2016-05-20 14:06:21 -07:00
powercap Power management material for v4.7-rc1 2016-05-16 19:17:22 -07:00
pps
ps3
ptp
pwm pwm: Changes for v4.7-rc1 2016-05-25 10:40:15 -07:00
rapidio
ras
regulator regulator: pwm: Use pwm_get_args() where appropriate 2016-05-17 14:45:02 +02:00
remoteproc
reset
rpmsg
rtc rtc: tps6586x: rename so module can be autoloaded 2016-05-21 17:07:17 +02:00
s390 DAX error handling for 4.7 2016-05-26 19:34:26 -07:00
sbus openprom: fix warning 2016-05-20 18:33:37 -07:00
scsi Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2016-05-28 12:04:17 -07:00
sfi
sh
sn
soc soc: mtk-pmic-wrap: avoid integer overflow warning 2016-05-19 15:20:24 +02:00
spi spi: imx: wait_for_completion_timeout(..) for PIO transfers 2016-06-21 19:52:15 +01:00
spmi
ssb
staging Round two of 4.7 merge window patches 2016-05-28 11:04:16 -07:00
target Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2016-05-28 12:04:17 -07:00
tc
thermal Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2016-05-26 09:23:43 -07:00
thunderbolt
tty remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
uio
usb Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2016-05-28 12:04:17 -07:00
uwb
vfio VFIO updates for v4.7-rc1 2016-05-25 09:47:26 -07:00
vhost
video remove lots of IS_ERR_VALUE abuses 2016-05-27 15:26:11 -07:00
virt
virtio virtio_balloon: fix PFN format for virtio-1 2016-05-22 19:44:13 +03:00
vlynq
vme
w1
watchdog Merge git://www.linux-watchdog.org/linux-watchdog 2016-05-25 10:19:17 -07:00
xen Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2016-05-28 12:04:17 -07:00
zorro
Kconfig libnvdimm for 4.7 2016-05-23 11:18:01 -07:00
Makefile /dev/dax, pmem: direct access to persistent memory 2016-05-20 22:02:53 -07:00