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bbfebeea76
linux/drivers/media/usb
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Russell King bbfebeea76 [media] em28xx: fix em28xx-input removal 
Removing the em28xx-rc module results in the following lockdep splat,
which is caused by trying to call cancel_delayed_work_sync() on an
uninitialised delayed work.  Fix this by ensuring we always initialise
the work.

INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 2183 Comm: rmmod Not tainted 3.18.0+ #1464
Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
Backtrace:
[<c0012228>] (dump_backtrace) from [<c00123c0>] (show_stack+0x18/0x1c)
 r6:c1419d2c r5:00000000 r4:00000000 r3:00000000
[<c00123a8>] (show_stack) from [<c06e2550>] (dump_stack+0x7c/0x98)
[<c06e24d4>] (dump_stack) from [<c0061c94>] (__lock_acquire+0x16d4/0x1bb0)
 r4:edf19f74 r3:df049380
[<c00605c0>] (__lock_acquire) from [<c00626d4>] (lock_acquire+0xb0/0x124)
 r10:00000000 r9:c003ba90 r8:00000000 r7:00000000 r6:00000000 r5:edf19f74
 r4:00000000
[<c0062624>] (lock_acquire) from [<c003bad4>] (flush_work+0x44/0x264)
 r10:00000000 r9:eaa86000 r8:edf190b0 r7:edf19f74 r6:00000001 r5:edf19f64
 r4:00000000
[<c003ba90>] (flush_work) from [<c003d8f0>] (__cancel_work_timer+0x8c/0x124)
 r7:00000000 r6:00000001 r5:00000000 r4:edf19f64
[<c003d864>] (__cancel_work_timer) from [<c003d99c>] (cancel_delayed_work_sync+0x14/0x18)
 r7:00000000 r6:eccc3600 r5:00000000 r4:edf19000
[<c003d988>] (cancel_delayed_work_sync) from [<bf0b5c10>] (em28xx_ir_fini+0x48/0xd8 [em28xx_rc])
[<bf0b5bc8>] (em28xx_ir_fini [em28xx_rc]) from [<bf08a0a8>] (em28xx_unregister_extension+0x40/0x94 [em28xx])
 r8:c000edc4 r7:00000081 r6:bf092bf4 r5:bf0b6a2c r4:edf19000 r3:bf0b5bc8
[<bf08a068>] (em28xx_unregister_extension [em28xx]) from [<bf0b64dc>] (em28xx_rc_unregister+0x14/0x1c [em28xx_rc])
 r6:00000800 r5:00000000 r4:bf0b6a50 r3:bf0b64c8
[<bf0b64c8>] (em28xx_rc_unregister [em28xx_rc]) from [<c0096710>] (SyS_delete_module+0x11c/0x180)
[<c00965f4>] (SyS_delete_module) from [<c000ec00>] (ret_fast_syscall+0x0/0x48)
 r6:00000001 r5:beb0f813 r4:b8b17d00

Fixes: f522260993 ("[media] em28xx: extend the support for device buttons")

Cc: <stable@vger.kernel.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2014-12-23 14:46:03 -02:00
..
airspy [media] airspy: enhance sample rate debug calculation precision 2014-09-21 16:42:33 -03:00
as102 [media] as102: fix endiannes casts 2014-09-26 06:47:52 -03:00
au0828 [media] media: au0828 VBI support comment cleanup 2014-12-23 10:47:43 -02:00
b2c2 [media] drivers: media: usb: b2c2: use usb_*_coherent() instead of pci_*_consistent() in flexcop-usb.c 2013-10-17 11:26:41 -03:00
cpia2 [media] media: remove the setting of the flag V4L2_FL_USE_FH_PRIO 2014-07-04 16:14:59 -03:00
cx231xx [media] media: drivers shouldn't touch debug field in video_device 2014-12-23 10:29:04 -02:00
dvb-usb [media] media: remove emacs editor variables 2014-12-22 17:52:20 -02:00
dvb-usb-v2 [media] mn88472: calculate the IF register values 2014-12-23 14:46:02 -02:00
em28xx [media] em28xx: fix em28xx-input removal 2014-12-23 14:46:03 -02:00
go7007 [media] usb: Make use of media_bus_format enum 2014-11-14 17:54:28 -02:00
gspca media updates for v3.18-rc1 2014-10-10 22:04:49 -04:00
hackrf [media] hackrf: harmless off by one in debug code 2014-10-21 08:56:52 -02:00
hdpvr [media] hdpvr: reduce memory footprint when debugging 2014-09-23 16:13:36 -03:00
msi2500 [media] msi2500: remove unneeded spinlock irq flags initialization 2014-09-21 16:42:35 -03:00
pvrusb2 [media] media: remove emacs editor variables 2014-12-22 17:52:20 -02:00
pwc [media] pwc: fix sparse warning 2014-09-03 09:55:43 -03:00
s2255 media updates for v3.19-rc1 2014-12-11 11:49:23 -08:00
siano [media] usb drivers: use %zu instead of %zd 2014-09-26 06:51:00 -03:00
stk1160 [media] media: drivers shouldn't touch debug field in video_device 2014-12-23 10:29:04 -02:00
stkwebcam [media] media: drivers shouldn't touch debug field in video_device 2014-12-23 10:29:04 -02:00
tm6000 [media] media: drivers shouldn't touch debug field in video_device 2014-12-23 10:29:04 -02:00
ttusb-budget media: use pci_zalloc_consistent 2014-08-08 15:57:28 -07:00
ttusb-dec [media] ttusb-dec: buffer overflow in ioctl 2014-09-23 16:13:37 -03:00
usbtv [media] Media: USB: usbtv: Fixed all coding style issues in usbtv source files 2014-09-23 16:13:44 -03:00
usbvision [media] media: remove emacs editor variables 2014-12-22 17:52:20 -02:00
uvc [media] uvcvideo: Add GUID for BGR 8:8:8 2014-12-23 09:08:26 -02:00
zr364xx [media] media: drivers shouldn't touch debug field in video_device 2014-12-23 10:29:04 -02:00
Kconfig [media] tlg2300: move to staging in preparation for removal 2014-12-16 23:21:43 -02:00
Makefile [media] tlg2300: move to staging in preparation for removal 2014-12-16 23:21:43 -02:00