linux_dsm_epyc7002/include
Guennadi Liakhovetski 7d051b35d5 [media] soc-camera: properly fix camera probing races
The recently introduced host_lock causes lockdep warnings, besides, list
enumeration in scan_add_host() must be protected by holdint the list_lock.
OTOH, holding .video_lock in soc_camera_open() isn't enough to protect
the host during its building of the pipeline, because .video_lock is per
soc-camera device. If, e.g. more than one sensor can be attached to a host
and the user tries to open both device nodes simultaneously, host's .add()
method can be called simultaneously for both sensors. Fix these problems
by holding list_lock instead of .host_lock in scan_add_host() and taking
it shortly at the beginning of soc_camera_open(), and using .host_lock to
protect host's .add() and .remove() operations only.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-05 01:35:35 -02:00
..
acpi
asm-generic These are a few cleanups for asm-generic: 2012-12-21 16:39:08 -08:00
clocksource
crypto
drm Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-next 2012-12-16 06:05:03 +00:00
keys
linux Merge git://www.linux-watchdog.org/linux-watchdog 2012-12-21 17:10:29 -08:00
math-emu
media [media] soc-camera: properly fix camera probing races 2013-01-05 01:35:35 -02:00
memory
misc
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-12-19 20:29:15 -08:00
pcmcia
ras
rdma
rxrpc
scsi SCSI misc on 20121212 2012-12-13 19:20:31 -08:00
sound ASoC: More updates for v3.8 2012-12-17 15:40:55 +01:00
target
trace mm: add a __GFP_KMEMCG flag 2012-12-18 15:02:12 -08:00
uapi Linux 3.8-rc1 2012-12-27 12:44:11 -02:00
video Merge branch 'omap-for-v3.8/fixes-for-merge-window' into omap-for-v3.8/fixes-for-merge-window-v2 2012-12-16 11:28:10 -08:00
xen Bugfixes: 2012-12-18 12:26:54 -08:00
Kbuild