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Michael Grzeschik edc530fe7e 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:
[<c000b98c>] (dump_backtrace+0x0/0x10c) from [<c000bb28>] (show_stack+0x18/0x1c)
 r6:c004c090 r5:00000009 r4:c2e0bd18 r3:00404000
[<c000bb10>] (show_stack+0x0/0x1c) from [<c02f397c>] (dump_stack+0x20/0x28)
[<c02f395c>] (dump_stack+0x0/0x28) from [<c001531c>] (warn_slowpath_common+0x54/0x70)
[<c00152c8>] (warn_slowpath_common+0x0/0x70) from [<c00153dc>] (warn_slowpath_fmt+0x38/0x40)
 r8:00004000 r7:a3b90000 r6:000080d0 r5:60000093 r4:c2e0a000 r3:00000009
[<c00153a4>] (warn_slowpath_fmt+0x0/0x40) from [<c004c090>] (lockdep_trace_alloc+0xcc/0x114)
 r3:c03955d8 r2:c03907db
[<c004bfc4>] (lockdep_trace_alloc+0x0/0x114) from [<c008f16c>] (__kmalloc+0x34/0x118)
 r6:000080d0 r5:c3800120 r4:000080d0 r3:c040a0f8
[<c008f138>] (__kmalloc+0x0/0x118) from [<c019c95c>] (imxdma_prep_dma_cyclic+0x64/0x168)
 r7:a3b90000 r6:00000004 r5:c39d8420 r4:c3847150
[<c019c8f8>] (imxdma_prep_dma_cyclic+0x0/0x168) from [<c024618c>] (snd_dmaengine_pcm_trigger+0xa8/0x160)
[<c02460e4>] (snd_dmaengine_pcm_trigger+0x0/0x160) from [<c0241fa8>] (soc_pcm_trigger+0x90/0xb4)
 r8:c058c7b0 r7:c3b8140c r6:c39da560 r5:00000001 r4:c3b81000
[<c0241f18>] (soc_pcm_trigger+0x0/0xb4) from [<c022ece4>] (snd_pcm_do_start+0x2c/0x38)
 r7:00000000 r6:00000003 r5:c058c7b0 r4:c3b81000
[<c022ecb8>] (snd_pcm_do_start+0x0/0x38) from [<c022e958>] (snd_pcm_action_single+0x40/0x6c)
[<c022e918>] (snd_pcm_action_single+0x0/0x6c) from [<c022ea64>] (snd_pcm_action_lock_irq+0x7c/0x9c)
 r7:00000003 r6:c3b810f0 r5:c3b810f0 r4:c3b81000
[<c022e9e8>] (snd_pcm_action_lock_irq+0x0/0x9c) from [<c023009c>] (snd_pcm_common_ioctl1+0x7f8/0xfd0)
 r8:c3b7f888 r7:005407b8 r6:c2c991c0 r5:c3b81000 r4:c3b81000 r3:00004142
[<c022f8a4>] (snd_pcm_common_ioctl1+0x0/0xfd0) from [<c023117c>] (snd_pcm_playback_ioctl1+0x464/0x488)
[<c0230d18>] (snd_pcm_playback_ioctl1+0x0/0x488) from [<c02311d4>] (snd_pcm_playback_ioctl+0x34/0x40)
 r8:c3b7f888 r7:00004142 r6:00000004 r5:c2c991c0 r4:005407b8
[<c02311a0>] (snd_pcm_playback_ioctl+0x0/0x40) from [<c00a14a4>] (vfs_ioctl+0x30/0x44)
[<c00a1474>] (vfs_ioctl+0x0/0x44) from [<c00a1fe8>] (do_vfs_ioctl+0x55c/0x5c0)
[<c00a1a8c>] (do_vfs_ioctl+0x0/0x5c0) from [<c00a208c>] (SyS_ioctl+0x40/0x68)
[<c00a204c>] (SyS_ioctl+0x0/0x68) from [<c0009380>] (ret_fast_syscall+0x0/0x44)
 r8:c0009544 r7:00000036 r6:bedeaa58 r5:00000000 r4:000000c0

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-04 14:34:47 +05:30
..
accessibility
acpi ACPI and power management fixes for 3.12-rc1 2013-09-12 11:22:45 -07:00
amba
ata
atm atm: he: print MAC via %pM 2013-09-04 14:41:55 -04:00
auxdisplay
base thp: account anon transparent huge pages into NR_ANON_PAGES 2013-09-12 15:38:03 -07:00
bcma
block Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
bluetooth
bus ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
cdrom
char Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
clk The common clk framework changes for 3.12 are dominated by clock driver 2013-09-09 15:49:04 -07:00
clocksource Merge branch 'timers/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-09-16 16:10:26 -04:00
connector
cpufreq Merge branch 'pm-cpufreq' 2013-09-12 13:04:11 +02:00
cpuidle ACPI and power management fixes for 3.12-rc1 2013-09-12 11:22:45 -07:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux 2013-09-07 12:53:35 +10:00
dca
devfreq
dio
dma dmaengine: imx-dma: fix slow path issue in prep_dma_cyclic 2013-10-04 14:34:47 +05:30
edac Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile 2013-09-06 11:14:33 -07:00
eisa
extcon
firewire
firmware firmware/dmi_scan: drop OOM messages 2013-09-11 15:58:51 -07:00
fmc
gpio Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
gpu Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-09-12 15:01:38 -07:00
hid Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
hsi
hv
hwmon hwmon: (k10temp) remove unnecessary pci_set_drvdata() 2013-09-12 08:17:40 -07:00
hwspinlock
i2c Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
ide ide: sgiioc4: Staticize ioc4_ide_attach_one() 2013-09-05 15:21:30 -04:00
idle
iio Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
infiniband Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2013-09-15 07:13:39 -04:00
iommu IOMMU Updates for Linux v3.12 2013-09-12 11:29:26 -07:00
ipack
irqchip ARM: SoC late changes for v3.12 2013-09-09 16:35:29 -07:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-09-05 14:54:29 -07:00
leds Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds 2013-09-12 11:35:33 -07:00
lguest lguest: fix guest kernel stack overflow when TF bit set. 2013-09-06 08:09:27 +09:30
macintosh
mailbox
md Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-09-12 15:01:38 -07:00
media Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
memory ARM: SoC platform changes for 3.12 2013-09-06 13:30:06 -07:00
memstick memstick: add support for legacy memorysticks 2013-09-11 15:59:35 -07:00
message
mfd Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
misc Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
mmc Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
mtd Just a single fastmap fix plus a regression fix. 2013-09-16 15:37:52 -04:00
net Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-09-15 17:45:52 -04:00
nfc
ntb ntb: clean up unnecessary MSI/MSI-X capability find 2013-09-05 11:08:01 -07:00
nubus
of Merge branch 'for-v3.12-fix' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping 2013-09-11 19:11:59 -07:00
oprofile oprofile: get rid of pointless forward declarations of struct super_block 2013-09-03 22:52:48 -04:00
parisc
parport
pci Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
pcmcia
pinctrl PTR_RET() is a weird name, and led to some confusing usage. We ended 2013-09-04 17:31:11 -07:00
platform Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86 2013-09-15 17:42:59 -04:00
pnp pnp: change pnp bus pm_ops to invoke pnp driver dev_pm_ops if specified 2013-09-11 15:58:15 -07:00
power Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
pps Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
ps3
ptp
pwm ARM: SoC cleanups for 3.12 2013-09-06 13:21:16 -07:00
rapidio
regulator PTR_RET() is a weird name, and led to some confusing usage. We ended 2013-09-04 17:31:11 -07:00
remoteproc
reset
rpmsg
rtc rtc: simplify devm_request_mem_region/devm_ioremap 2013-09-11 15:58:59 -07:00
s390 s390/vmcore: use vmcore for zfcpdump 2013-09-11 15:59:15 -07:00
sbus
scsi SCSI misc on 20130915 2013-09-15 17:41:30 -04:00
sfi
sh
sn
spi Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
ssb
staging Merge git://git.kvack.org/~bcrl/aio-next 2013-09-13 10:55:58 -07:00
target Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2013-09-12 16:11:45 -07:00
tc
thermal
tty Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
uio
usb Merge git://git.kvack.org/~bcrl/aio-next 2013-09-13 10:55:58 -07:00
uwb
vfio vfio-pci: PCI hot reset interface 2013-09-04 11:28:04 -06:00
vhost Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2013-09-12 16:11:45 -07:00
video Bye, bye, WfW flag 2013-09-11 19:55:12 -07:00
virt
virtio virtio_pci: pm: Use CONFIG_PM_SLEEP instead of CONFIG_PM 2013-09-09 10:02:53 +09:30
vlynq
vme
w1 Remove GENERIC_HARDIRQ config option 2013-09-13 15:09:52 +02:00
watchdog Merge git://www.linux-watchdog.org/linux-watchdog 2013-09-12 08:45:53 -07:00
xen Bug-fixes: 2013-09-12 11:28:24 -07:00
zorro
Kconfig
Makefile