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[media] vb2: Fix an off by one error in 'vb2_plane_vaddr'

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We should ensure that 'plane_no' is '< vb->num_planes' as done in
'vb2_plane_cookie' just a few lines below.

Fixes: e23ccc0ad9 ("[media] v4l: add videobuf2 Video for Linux 2 driver framework")

Cc: stable@vger.kernel.org
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Christophe JAILLET 2017-04-28 01:51:40 -03:00 committed by Mauro Carvalho Chehab
parent e0f2e5eb14
commit 5ebb6dd36c
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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@ -868,7 +868,7 @@ EXPORT_SYMBOL_GPL(vb2_core_create_bufs);
void *vb2_plane_vaddr(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, vaddr, vb->planes[plane_no].mem_priv);