[media] videobuf2-core: add comments before the WARN_ON
authorHans Verkuil <hans.verkuil@cisco.com>
Mon, 4 Aug 2014 05:33:53 +0000 (02:33 -0300)
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>
Sun, 21 Sep 2014 23:45:03 +0000 (20:45 -0300)
commit23cd08c8f72405359862aff2ad2a8be1c232198c
treeb507112fcc5548e723690be4aff1e3772c7c6df9
parent47bc59c52b005f546343c373370a7eec6a2b0f84
[media] videobuf2-core: add comments before the WARN_ON

Recently WARN_ON() calls have been added to warn if the driver is not
properly returning buffers to vb2 in start_streaming (if it fails) or
stop_streaming(). Add comments before those WARN_ON calls that refer
to the videobuf2-core.h header that explains what drivers are supposed
to do in these situations. That should help point developers in the
right direction if they see these warnings.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Pawel Osciak <pawel@osciak.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
drivers/media/v4l2-core/videobuf2-core.c