[PATCH] videobuf2: Use buffer length for DMABUF in non-planar mode

[Laurent Pinchart]

When using DMABUF streaming in non-planar mode, the v4l2_buffer::length
field holds the length of the buffer as required by userspace. Copy it
to the length of the first plane at QBUF time, as the plane length is
later checked against the dma-buf size.

Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
---
 drivers/media/video/videobuf2-core.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/media/video/videobuf2-core.c 
b/drivers/media/video/videobuf2-core.c
index 29cf6ed..8eb4d08 100644
--- a/drivers/media/video/videobuf2-core.c
+++ b/drivers/media/video/videobuf2-core.c
@@ -927,6 +927,7 @@ static int __fill_vb2_buffer(struct vb2_buffer *vb, const 
struct v4l2_buffer *b,
                }
                if (b->memory == V4L2_MEMORY_DMABUF) {
                        v4l2_planes[0].m.fd = b->m.fd;
+                       v4l2_planes[0].length = b->length;
                }
 
        }
-- 
1.7.3.4

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