uvc_queue_streamon  800 drivers/media/usb/uvc/uvc_v4l2.c 	ret = uvc_queue_streamon(&stream->queue, type);
uvc_queue_streamon  763 drivers/media/usb/uvc/uvcvideo.h int uvc_queue_streamon(struct uvc_video_queue *queue, enum v4l2_buf_type type);