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[media] uvcvideo: Add function to convert from queue to stream 

Factorize the container_of() call into an inline function and update
callers.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Laurent Pinchart 2014-10-21 12:58:35 -03:00 committed by Mauro Carvalho Chehab
parent b83bba24a2
commit bc75d5a009
1 changed files with 8 additions and 4 deletions
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12
drivers/media/usb/uvc/uvc_queue.c
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@ -36,6 +36,12 @@
* the driver.
*/
static inline struct uvc_streaming *
uvc_queue_to_stream(struct uvc_video_queue *queue)
{
return container_of(queue, struct uvc_streaming, queue);
}
/* -----------------------------------------------------------------------------
* videobuf2 queue operations
*/
@ -45,8 +51,7 @@ static int uvc_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
unsigned int sizes[], void *alloc_ctxs[])
{
struct uvc_video_queue *queue = vb2_get_drv_priv(vq);
struct uvc_streaming *stream =
container_of(queue, struct uvc_streaming, queue);
struct uvc_streaming *stream = uvc_queue_to_stream(queue);
/* Make sure the image size is large enough. */
if (fmt && fmt->fmt.pix.sizeimage < stream->ctrl.dwMaxVideoFrameSize)
@ -109,8 +114,7 @@ static void uvc_buffer_queue(struct vb2_buffer *vb)
static void uvc_buffer_finish(struct vb2_buffer *vb)
{
struct uvc_video_queue *queue = vb2_get_drv_priv(vb->vb2_queue);
struct uvc_streaming *stream =
container_of(queue, struct uvc_streaming, queue);
struct uvc_streaming *stream = uvc_queue_to_stream(queue);
struct uvc_buffer *buf = container_of(vb, struct uvc_buffer, buf);
if (vb->state == VB2_BUF_STATE_DONE)