linux-kernel - [PATCH 12/12] media: usb: uvc: use vb2_ops_wait

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Date:	Tue, 18 Nov 2014 11:23:41 +0000
From:	"Lad, Prabhakar" <prabhakar.csengg@...il.com>
To:	Hans Verkuil <hans.verkuil@...co.com>,
	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	LMML <linux-media@...r.kernel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	"Lad, Prabhakar" <prabhakar.csengg@...il.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>
Subject: [PATCH 12/12] media: usb: uvc: use vb2_ops_wait_prepare/finish helper

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@...il.com>
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.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 6e92d20..9c42ac6f 100644
--- a/drivers/media/usb/uvc/uvc_queue.c
+++ b/drivers/media/usb/uvc/uvc_queue.c
@@ -117,27 +117,13 @@ 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 struct vb2_ops uvc_queue_qops = {
 	.queue_setup = uvc_queue_setup,
 	.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,
 };
 
 int uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type,
@@ -153,6 +139,7 @@ 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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