[PATCH V2] vb2: fix plane index sanity check in vb2_plane_cookie()

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It's also invalid that plane_no equals to vb->num_planes

Signed-off-by: Zhaowei Yuan <zhaowei.yuan@xxxxxxxxxxx>
---
 drivers/media/v4l2-core/videobuf2-core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c
index c359006..1ae4e57 100644
--- a/drivers/media/v4l2-core/videobuf2-core.c
+++ b/drivers/media/v4l2-core/videobuf2-core.c
@@ -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);
--
1.7.9.5

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