media: uvcvideo: Move video_device under video_queue

It is more natural that the "struct video_device" belongs to
uvc_video_queue instead of uvc_streaming.

This is an aesthetic change. No functional change expected.

Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans de Goede <hansg@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

Author: ribalda

drivers/media/usb/uvc/uvc_driver.c

@@ -1954,11 +1954,11 @@ static void uvc_unregister_video(struct uvc_device *dev)
 
 	list_for_each_entry(stream, &dev->streams, list) {
 		/* Nothing to do here, continue. */
-		if (!video_is_registered(&stream->vdev))
+		if (!video_is_registered(&stream->queue.vdev))
 			continue;
 
-		vb2_video_unregister_device(&stream->vdev);
-		vb2_video_unregister_device(&stream->meta.vdev);
+		vb2_video_unregister_device(&stream->queue.vdev);
+		vb2_video_unregister_device(&stream->meta.queue.vdev);
 
 		/*
 		 * Now both vdevs are not streaming and all the ioctls will
@@ -1980,12 +1980,12 @@ static void uvc_unregister_video(struct uvc_device *dev)
 
 int uvc_register_video_device(struct uvc_device *dev,
 			      struct uvc_streaming *stream,
-			      struct video_device *vdev,
 			      struct uvc_video_queue *queue,
 			      enum v4l2_buf_type type,
 			      const struct v4l2_file_operations *fops,
 			      const struct v4l2_ioctl_ops *ioctl_ops)
 {
+	struct video_device *vdev = &queue->vdev;
 	int ret;
 
 	/* Initialize the video buffers queue. */
@@ -2067,9 +2067,9 @@ static int uvc_register_video(struct uvc_device *dev,
 	uvc_debugfs_init_stream(stream);
 
 	/* Register the device with V4L. */
-	return uvc_register_video_device(dev, stream, &stream->vdev,
-					 &stream->queue, stream->type,
-					 &uvc_fops, &uvc_ioctl_ops);
+	return uvc_register_video_device(dev, stream, &stream->queue,
+					 stream->type, &uvc_fops,
+					 &uvc_ioctl_ops);
 }
 
 /*
@@ -2105,7 +2105,7 @@ static int uvc_register_terms(struct uvc_device *dev,
 		 */
 		uvc_meta_register(stream);
 
-		term->vdev = &stream->vdev;
+		term->vdev = &stream->queue.vdev;
 	}
 
 	return 0;

drivers/media/usb/uvc/uvc_metadata.c

@@ -226,12 +226,11 @@ static int uvc_meta_detect_msxu(struct uvc_device *dev)
 int uvc_meta_register(struct uvc_streaming *stream)
 {
 	struct uvc_device *dev = stream->dev;
-	struct video_device *vdev = &stream->meta.vdev;
 	struct uvc_video_queue *queue = &stream->meta.queue;
 
 	stream->meta.format = V4L2_META_FMT_UVC;
 
-	return uvc_register_video_device(dev, stream, vdev, queue,
+	return uvc_register_video_device(dev, stream, queue,
 					 V4L2_BUF_TYPE_META_CAPTURE,
 					 &uvc_meta_fops, &uvc_meta_ioctl_ops);
 }

drivers/media/usb/uvc/uvc_v4l2.c

@@ -576,7 +576,7 @@ static int uvc_v4l2_open(struct file *file)
 	if (!handle)
 		return -ENOMEM;
 
-	v4l2_fh_init(&handle->vfh, &stream->vdev);
+	v4l2_fh_init(&handle->vfh, &stream->queue.vdev);
 	v4l2_fh_add(&handle->vfh, file);
 	handle->chain = stream->chain;
 	handle->stream = stream;

drivers/media/usb/uvc/uvc_video.c

@@ -1691,7 +1691,7 @@ static void uvc_video_complete(struct urb *urb)
 	struct uvc_streaming *stream = uvc_urb->stream;
 	struct uvc_video_queue *queue = &stream->queue;
 	struct uvc_video_queue *qmeta = &stream->meta.queue;
-	struct vb2_queue *vb2_qmeta = stream->meta.vdev.queue;
+	struct vb2_queue *vb2_qmeta = stream->meta.queue.vdev.queue;
 	struct uvc_buffer *buf = NULL;
 	struct uvc_buffer *buf_meta = NULL;
 	unsigned long flags;

drivers/media/usb/uvc/uvcvideo.h

@@ -328,6 +328,7 @@ struct uvc_buffer {
 #define UVC_QUEUE_DISCONNECTED		(1 << 0)
 
 struct uvc_video_queue {
+	struct video_device vdev;
 	struct vb2_queue queue;
 	struct mutex mutex;			/*
 						 * Serializes vb2_queue and
@@ -450,7 +451,6 @@ struct uvc_urb {
 struct uvc_streaming {
 	struct list_head list;
 	struct uvc_device *dev;
-	struct video_device vdev;
 	struct uvc_video_chain *chain;
 	atomic_t active;
 
@@ -477,7 +477,6 @@ struct uvc_streaming {
 		       struct uvc_buffer *meta_buf);
 
 	struct {
-		struct video_device vdev;
 		struct uvc_video_queue queue;
 		u32 format;
 	} meta;
@@ -732,7 +731,6 @@ int uvc_meta_register(struct uvc_streaming *stream);
 
 int uvc_register_video_device(struct uvc_device *dev,
 			      struct uvc_streaming *stream,
-			      struct video_device *vdev,
 			      struct uvc_video_queue *queue,
 			      enum v4l2_buf_type type,
 			      const struct v4l2_file_operations *fops,