[media] exynos4-is: Add locking at fimc(-lite) subdev unregistered handler

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Protect the fimc/fimc-lite video nodes unregistration with their video
lock. This prevents a kernel crash when e.g. udev opens a video node
right after the driver registers it and then the driver tries to
unregister it and defers its probing. Using video_is_unregistered()
together with the video mutex allows safe unregistration of the video
nodes at any time.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

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Sylwester Nawrocki 2013-05-31 11:37:25 -03:00 • committed by Mauro Carvalho Chehab

parent 52917bcbe0

commit 26d63d13da

2 changed files with 8 additions and 0 deletions

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4

drivers/media/platform/exynos4-is/fimc-capture.c

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4

drivers/media/platform/exynos4-is/fimc-lite.c

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