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Commit d1e16428 authored by Sakari Ailus's avatar Sakari Ailus Committed by Mauro Carvalho Chehab
Browse files

media: v4l2-async: Safely clean up an uninitialised notifier 



Make the V4L2 async framework a bit more robust by allowing to clean up an
uninitialised notifier. Otherwise the result would be a (close to) NULL
pointer dereference.

Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: default avatarNiklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
parent 2ea4cfc9

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

+1 −1
Original line number Original line Diff line number Diff line
@@ -534,7 +534,7 @@ static void __v4l2_async_notifier_cleanup(struct v4l2_async_notifier *notifier) 
{

{

	struct v4l2_async_subdev *asd, *tmp;

	struct v4l2_async_subdev *asd, *tmp;





	if (!notifier)

	if (!notifier || !notifier->asd_list.next)

		return;

		return;





	list_for_each_entry_safe(asd, tmp, &notifier->asd_list, asd_list) {

	list_for_each_entry_safe(asd, tmp, &notifier->asd_list, asd_list) {