__video_device_pipeline_start
ret = __video_device_pipeline_start(csi->vdev, &csi->pipe);
ret = __video_device_pipeline_start(&video->vdev, pipe);
ret = __video_device_pipeline_start(&video->video, &pipe->pipe);
EXPORT_SYMBOL_GPL(__video_device_pipeline_start);
__must_check int __video_device_pipeline_start(struct video_device *vdev,