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[media] vb2: fix plane index sanity check in vb2_plane_cookie() 

It's also invalid when plane_no is equal to vb->num_planes

Signed-off-by: Zhaowei Yuan <zhaowei.yuan@samsung.com>
Cc: stable@vger.kernel.org      # for v3.7 and up
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Zhaowei Yuan 2014-08-21 23:28:21 -03:00 committed by Mauro Carvalho Chehab
parent 983ed75564
commit a9ae4692ed
1 changed files with 1 additions and 1 deletions
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2
drivers/media/v4l2-core/videobuf2-core.c
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@ -1130,7 +1130,7 @@ EXPORT_SYMBOL_GPL(vb2_plane_vaddr);
*/
void *vb2_plane_cookie(struct vb2_buffer *vb, unsigned int plane_no)
{
if (plane_no > vb->num_planes || !vb->planes[plane_no].mem_priv)
if (plane_no >= vb->num_planes || !vb->planes[plane_no].mem_priv)
return NULL;
return call_ptr_memop(vb, cookie, vb->planes[plane_no].mem_priv);