Add a sanity check to make sure drivers do not adjust the number of buffers
or planes above the supported limit on reqbufs.
Signed-off-by: Pawel Osciak <pa...@osciak.com>
---
drivers/media/video/videobuf2-core.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/media/video/videobuf2-core.c
b/drivers/media/video/videobuf2-core.c
index 6698c77..6e69584 100644
--- a/drivers/media/video/videobuf2-core.c
+++ b/drivers/media/video/videobuf2-core.c
@@ -529,6 +529,11 @@ int vb2_reqbufs(struct vb2_queue *q, struct
v4l2_requestbuffers *req)
if (ret)
return ret;
+ /*
+ * Make sure driver did not request more buffers/planes than we can
handle.
+ */
+ BUG_ON (num_buffers > VIDEO_MAX_FRAME || num_planes > VIDEO_MAX_PLANES);
+
/* Finally, allocate buffers and video memory */
ret = __vb2_queue_alloc(q, req->memory, num_buffers, num_planes,
plane_sizes);
--
1.7.4.2
--
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