Instead of initializing the vb2_queue in open (and freeing in release) do this in probe/remove instead. And as a bonus use the vb2 helper functions to greatly simplify the driver. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>