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[media] vb2: Allow queuing OUTPUT buffers with zeroed 'bytesused'

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Modify the bytesused/data_offset check to not fail if both bytesused
and data_offset is set to 0. This should minimize possible issues in
existing applications which worked before we enforced the plane lengths
for output buffers checks introduced in commit 8023ed09cb
"videobuf2-core: Verify planes lengths for output buffers"

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Sylwester Nawrocki 2013-08-26 11:47:09 -03:00 committed by Mauro Carvalho Chehab
parent a7a69197a7
commit 3c5c23c577
1 changed files with 3 additions and 1 deletions
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4
drivers/media/v4l2-core/videobuf2-core.c
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@ -353,7 +353,9 @@ static int __verify_length(struct vb2_buffer *vb, const struct v4l2_buffer *b)
if (b->m.planes[plane].bytesused > length)
return -EINVAL;
if (b->m.planes[plane].data_offset >=
if (b->m.planes[plane].data_offset > 0 &&
b->m.planes[plane].data_offset >=
b->m.planes[plane].bytesused)
return -EINVAL;
}