[media] v4l: async: Make it safe to unregister unregistered notifier

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Calling v4l2_async_notifier_unregister() on a notifier that hasn't been
registered leads to a crash. To simplify drivers, make it safe to
unregister a notifier that has not been registered.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

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Laurent Pinchart 2013-07-03 07:49:06 -03:00 • committed by Mauro Carvalho Chehab

parent 3f359a7cb1

commit 8e3fbfee23

1 changed files with 6 additions and 0 deletions

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drivers/media/v4l2-core/v4l2-async.c

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