This patch drops driver specific wait_prepare() and
wait_finish() callbacks from vb2_ops and instead uses
the the helpers vb2_ops_wait_prepare/finish() provided
by the vb2 core, the lock member of the queue needs
to be initalized to a mutex so that vb2 helpers
vb2_ops_wait_prepare/finish() can make use of it.
Signed-off-by: Lad, Prabhakar <prabhakar.cse...@gmail.com>
Cc: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
---
drivers/media/usb/uvc/uvc_queue.c | 19 +++----------------
1 file changed, 3 insertions(+), 16 deletions(-)
diff --git a/drivers/media/usb/uvc/uvc_queue.c
b/drivers/media/usb/uvc/uvc_queue.c
index cc96072..10c554e 100644
--- a/drivers/media/usb/uvc/uvc_queue.c
+++ b/drivers/media/usb/uvc/uvc_queue.c
@@ -143,20 +143,6 @@ static void uvc_buffer_finish(struct vb2_buffer *vb)
uvc_video_clock_update(stream, &vb->v4l2_buf, buf);
}
-static void uvc_wait_prepare(struct vb2_queue *vq)
-{
- struct uvc_video_queue *queue = vb2_get_drv_priv(vq);
-
- mutex_unlock(&queue->mutex);
-}
-
-static void uvc_wait_finish(struct vb2_queue *vq)
-{
- struct uvc_video_queue *queue = vb2_get_drv_priv(vq);
-
- mutex_lock(&queue->mutex);
-}
-
static int uvc_start_streaming(struct vb2_queue *vq, unsigned int count)
{
struct uvc_video_queue *queue = vb2_get_drv_priv(vq);
@@ -195,8 +181,8 @@ static struct vb2_ops uvc_queue_qops = {
.buf_prepare = uvc_buffer_prepare,
.buf_queue = uvc_buffer_queue,
.buf_finish = uvc_buffer_finish,
- .wait_prepare = uvc_wait_prepare,
- .wait_finish = uvc_wait_finish,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
.start_streaming = uvc_start_streaming,
.stop_streaming = uvc_stop_streaming,
};
@@ -214,6 +200,7 @@ int uvc_queue_init(struct uvc_video_queue *queue, enum
v4l2_buf_type type,
queue->queue.mem_ops = &vb2_vmalloc_memops;
queue->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC
| V4L2_BUF_FLAG_TSTAMP_SRC_SOE;
+ queue->queue.lock = &queue->mutex;
ret = vb2_queue_init(&queue->queue);
if (ret)
return ret;
--
1.9.1
--
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