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Sylwester Nawrocki d2b903b442 [media] exynos4-is: Fix entity unregistration on error path 
This patch corrects media entities unregistration order to make sure
the fimc.N.capture and fimc-lite video nodes are unregistered with
fimc->lock mutex held. This prevents races between video device open()
and defered probing and NULL pointer dereference in open() callback
as follows:
[   77.645000] Unable to handle kernel NULL pointer dereference at virtual address 00000290t
[   77.655000] pgd = ee7a8000
[   77.660000] [00000290] *pgd=6e13c831, *pte=00000000, *ppte=00000000
[   77.665000] Internal error: Oops: 17 [#1] PREEMPT SMP ARM
[   77.670000] Modules linked in: s5p_fimc ipv6 exynos_fimc_is exynos_fimc_lite
 s5p_csis v4l2_mem2mem videobuf2_dma_contig videobuf2_memops exynos4_is_common videobuf2_core [last unloaded: s5p_fimc]
[   77.685000] CPU: 0 PID : 2998 Comm: v4l_id Tainted: G        W   3.10.0-next-20130709-00039-g39f491b-dirty #1548
[   77.695000] task: ee084000 ti: ee46e000 task.ti: ee46e000
[   77.700000] PC is at __mutex_lock_slowpath+0x54/0x368
[   77.705000] LR is at __mutex_lock_slowpath+0x24/0x368
[   77.710000] pc : [<c038dc10>]    lr : [<c038dbe0>]    psr: 60000093
[   77.710000] sp : ee46fd70  ip : 000008c8  fp : c054e34c
[   77.725000] r10: ee084000  r9 : 00000000  r8 : ee439480
[   77.730000] r7 : ee46e000  r6 : 60000013  r5 : 00000290  r4 : 0000028c
[   77.735000] r3 : 00000000  r2 : 00000000  r1 : 20000093  r0 : 00000001
[   77.740000] Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM Segment user
[   77.750000] Control: 10c5387d  Table: 6e7a804a  DAC: 00000015
[   77.755000] Process v4l_id (pid: 2998, stack limit = 0xee46e238)
[   77.760000] Stack: (0xee46fd70 to 0xee470000)
    	       ...
[   77.935000] [<c038dc10>] (__mutex_lock_slowpath+0x54/0x368) from [<c038df30>] (mutex_lock+0xc/0x24)
[   77.945000] [<c038df30>] (mutex_lock+0xc/0x24) from [<bf03fa90>] (fimc_lite_open+0x12c/0x2bc [exynos_fimc_lite])
[   77.955000] [<bf03fa90>] (fimc_lite_open+0x12c/0x2bc [exynos_fimc_lite]) from [<c02ab11c>] (v4l2_open+0xa0/0xe0)
[   77.965000] [<c02ab11c>] (v4l2_open+0xa0/0xe0) from [<c00b1de4>] (chrdev_open+0x88/0x170)
[   77.975000] [<c00b1de4>] (chrdev_open+0x88/0x170) from [<c00ac710>] (do_dentry_open.isra.14+0x1d8/0x258)
[   77.985000] [<c00ac710>] (do_dentry_open.isra.14+0x1d8/0x258) from [<c00ac860>] (finish_open+0x20/0x38)
[   77.995000] [<c00ac860>] (finish_open+0x20/0x38) from [<c00ba658>] (do_last.isra.43+0x538/0xb1c)
[   78.000000] [<c00ba658>] (do_last.isra.43+0x538/0xb1c) from [<c00bacf0>] (path_openat+0xb4/0x5c4)
[   78.010000] [<c00bacf0>] (path_openat+0xb4/0x5c4) from [<c00bb4b4>] (do_filp_open+0x2c/0x80)
[   78.020000] [<c00bb4b4>] (do_filp_open+0x2c/0x80) from [<c00ad744>] (do_sys_open+0xf4/0x1a8)
[   78.025000] [<c00ad744>] (do_sys_open+0xf4/0x1a8) from [<c000e320>] (ret_fast_syscall+0x0/0x30)
[   78.035000] Code: 1a000093 e10f6000 f10c0080 e2845004 (e1953f9f)

Reported-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Cc: stable@vger.kernel.org
 		2013-09-03 09:24:22 -03:00
..
accessibility
…
acpi ACPI video support fixes for 3.11 2013-07-21 10:11:04 -07:00
amba
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ata Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-07-13 14:52:21 -07:00
atm
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auxdisplay
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base Driver core patches for 3.11-rc2 2013-07-18 12:48:40 -07:00
bcma bcma: add support for BCM43142 2013-06-27 13:42:16 -04:00
block Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze 2013-07-10 10:16:07 -07:00
bluetooth
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bus ARM SoC device tree changes 2013-07-02 14:23:01 -07:00
cdrom drivers/cdrom/cdrom.c: use kzalloc() for failing hardware 2013-07-03 16:07:25 -07:00
char Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-07-13 14:52:21 -07:00
clk Power management and ACPI updates for 3.11-rc1 2013-07-03 14:35:40 -07:00
clocksource clocksource+irqchip: delete __cpuinit usage from all related files 2013-07-14 19:36:57 -04:00
connector
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cpufreq Power management and ACPI fixes for 3.11-rc2 2013-07-19 09:59:06 -07:00
cpuidle Power management and ACPI updates for 3.11-rc1 2013-07-03 14:35:40 -07:00
crypto crypto: talitos: use sg_pcopy_to_buffer() 2013-07-09 10:33:30 -07:00
dca
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devfreq Merge branch 'akpm' (updates from Andrew Morton) 2013-07-03 17:12:13 -07:00
dio
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dma drivers/dma/iop-adma.c: fix new warnings 2013-07-09 10:33:19 -07:00
edac Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-07-13 14:52:21 -07:00
eisa
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extcon drivers: avoid format string in dev_set_name 2013-07-03 16:07:41 -07:00
firewire
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firmware efivars: check for EFI_RUNTIME_SERVICES 2013-07-11 11:00:31 +01:00
fmc
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gpio Power management and ACPI updates for 3.11-rc1 2013-07-03 14:35:40 -07:00
gpu ACPI video support fixes for 3.11 2013-07-21 10:11:04 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2013-07-04 15:35:08 -07:00
hsi drivers: avoid format string in dev_set_name 2013-07-03 16:07:41 -07:00
hv
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hwmon Single patch to staticize a local variable 2013-07-18 11:32:36 -07:00
hwspinlock
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i2c Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-07-13 14:52:21 -07:00
ide Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide 2013-07-10 18:15:41 -07:00
idle
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iio The first round of IIO fixes for the 3.11 cycle. 2013-07-16 22:41:38 -07:00
infiniband Main batch of InfiniBand/RDMA changes for 3.11 merge window: 2013-07-13 12:57:21 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2013-07-13 18:05:13 -07:00
iommu IOMMU Updates for Linux 3.11 2013-07-10 14:46:40 -07:00
ipack
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irqchip clocksource+irqchip: delete __cpuinit usage from all related files 2013-07-14 19:36:57 -04:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-07-09 18:24:39 -07:00
leds leds: mc13783: Fix "uninitialized variable" warning 2013-07-02 08:44:02 -07:00
lguest Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-07-04 11:40:58 -07:00
macintosh macintosh/windfarm: Remove obsolete cleanup for clientdata 2013-07-01 11:46:56 +10:00
mailbox
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md md/raid1: fix bio handling problems in process_checks() 2013-07-18 14:18:04 +10:00
media [media] exynos4-is: Fix entity unregistration on error path 2013-09-03 09:24:22 -03:00
memory
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memstick drivers/memstick/host/r592.c: convert to module_pci_driver 2013-07-03 16:08:06 -07:00
message drivers: avoid format strings in names passed to alloc_workqueue() 2013-07-03 16:07:41 -07:00
mfd For the 3.11 merge we only have one new MFD driver for the Kontron PLD. 2013-07-10 11:10:27 -07:00
misc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-07-04 11:40:58 -07:00
mmc MMC highlights for 3.11: 2013-07-10 11:16:00 -07:00
mtd A couple of fixes and clean-ups, allow for assigning user-defined 2013-07-05 12:09:48 -07:00
net macvtap: do not zerocopy if iov needs more pages than MAX_SKB_FRAGS 2013-07-18 13:04:25 -07:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-07-09 18:24:39 -07:00
ntb
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nubus
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of Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-07-09 18:24:39 -07:00
oprofile drivers: delete __cpuinit usage from all remaining drivers files 2013-07-14 19:36:59 -04:00
parisc parisc: fix LMMIO mismatch between PAT length and MASK register 2013-07-09 22:09:16 +02:00
parport Merge branch 'akpm' (updates from Andrew Morton) 2013-07-03 17:12:13 -07:00
pci Merge branch 'akpm' (updates from Andrew Morton) 2013-07-03 17:12:13 -07:00
pcmcia Driver core patches for 3.11-rc1 2013-07-02 11:44:19 -07:00
pinctrl Pin control changes for the v3.11 kernel cycle: 2013-07-03 11:48:03 -07:00
platform x86 platform drivers: fix gpio leak 2013-07-10 15:42:51 -04:00
pnp PNP / ACPI: avoid garbage in resource name 2013-07-18 01:38:59 +02:00
power Nothing exciting this time, just assorted fixes and cleanups. 2013-07-10 11:13:00 -07:00
pps pps-gpio: add device-tree binding and support 2013-07-03 16:08:06 -07:00
ps3
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ptp
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pwm pwm: pwm-tiehrpwm: Use clk_enable/disable instead clk_prepare/unprepare. 2013-06-26 23:23:54 +02:00
rapidio Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-07-13 14:52:21 -07:00
regulator For the 3.11 merge we only have one new MFD driver for the Kontron PLD. 2013-07-10 11:10:27 -07:00
remoteproc Trivial remoteproc fixes by Suman Anna, Wei Yongjun and Thomas Meyer. 2013-07-11 12:35:09 -07:00
reset
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rpmsg
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rtc For the 3.11 merge we only have one new MFD driver for the Kontron PLD. 2013-07-10 11:10:27 -07:00
s390 s390/zcrypt: Alias for new zcrypt device driver base module 2013-07-19 08:37:39 +02:00
sbus
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scsi SCSI for-linus on 20130713 2013-07-13 17:41:21 -07:00
sfi
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sh Merge branch 'pm-assorted' 2013-06-28 13:01:40 +02:00
sn
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spi Merge remote-tracking branch 'spi/fix/xilinx' into spi-linus 2013-07-15 11:46:16 +01:00
ssb Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-07-13 14:52:21 -07:00
staging [media] msi3101: Fix compilation on i386 2013-08-24 13:35:14 -03:00
target Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2013-07-11 12:57:19 -07:00
tc
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thermal Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2013-07-11 12:26:08 -07:00
tty Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-07-13 14:52:21 -07:00
uio uio: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT 2013-07-03 16:07:26 -07:00
usb Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-07-13 14:52:21 -07:00
uwb drivers: avoid format string in dev_set_name 2013-07-03 16:07:41 -07:00
vfio vfio Updates for v3.11 2013-07-10 14:50:08 -07:00
vhost Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2013-07-11 12:57:19 -07:00
video uvesafb: Really allow mtrr being 0, as documented and warn()ed 2013-07-16 10:24:28 +10:00
virt
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virtio No real surprises. 2013-07-10 14:50:58 -07:00
vlynq
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vme
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w1 drivers/w1/slaves/w1_ds2408.c: add magic sequence to disable P0 test mode 2013-07-03 16:08:06 -07:00
watchdog Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-07-13 14:52:21 -07:00
xen drivers: delete __cpuinit usage from all remaining drivers files 2013-07-14 19:36:59 -04:00
zorro zorro: switch to fixed_size_llseek() 2013-06-29 12:57:28 +04:00
Kconfig For the 3.11 merge we only have one new MFD driver for the Kontron PLD. 2013-07-10 11:10:27 -07:00
Makefile For the 3.11 merge we only have one new MFD driver for the Kontron PLD. 2013-07-10 11:10:27 -07:00