__qbuf_dmabuf checks whether size of provided dmabuf is large
enough, and it returns error without any log. So this patch adds
error log in the case.

Signed-off-by: Seung-Woo Kim <sw0312....@samsung.com>
---
 drivers/media/v4l2-core/videobuf2-core.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/media/v4l2-core/videobuf2-core.c 
b/drivers/media/v4l2-core/videobuf2-core.c
index b19b306..5faf10c 100644
--- a/drivers/media/v4l2-core/videobuf2-core.c
+++ b/drivers/media/v4l2-core/videobuf2-core.c
@@ -1116,6 +1116,8 @@ static int __qbuf_dmabuf(struct vb2_buffer *vb, const 
struct v4l2_buffer *b)
 
                if (planes[plane].length < planes[plane].data_offset +
                    q->plane_sizes[plane]) {
+                       dprintk(1, "qbuf: invalid dmabuf length for plane %d\n",
+                               plane);
                        ret = -EINVAL;
                        goto err;
                }
-- 
1.7.4.1

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