V4L/DVB: v4l: videobuf: qbuf now uses relevant v4l2_buffer fields for OUTPUT types

According to the V4L2 specification, applications set bytesused, field and
timestamp fields of struct v4l2_buffer when the buffer is intended for
output and memory type is MMAP. This adds proper copying of those values
to videobuf_buffer so drivers can use them.

Signed-off-by: Pawel Osciak <p.osciak@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/media/video/videobuf-core.c b/drivers/media/video/videobuf-core.c
index dc2f6a8c0225..9f99e3bf5392 100644
--- a/drivers/media/video/videobuf-core.c
+++ b/drivers/media/video/videobuf-core.c
@@ -544,6 +544,13 @@ int videobuf_qbuf(struct videobuf_queue *q, struct v4l2_buffer *b)
                                    "but buffer addr is zero!\n");
                         goto done;
                 }
+                if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT
+                    || q->type == V4L2_BUF_TYPE_VBI_OUTPUT
+                    || q->type == V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) {
+                        buf->size = b->bytesused;
+                        buf->field = b->field;
+                        buf->ts = b->timestamp;
+                }
                 break;
         case V4L2_MEMORY_USERPTR:
                 if (b->length < buf->bsize) {