uvc_xu_ctrl_query 1288 drivers/media/usb/uvc/uvc_v4l2.c 		return uvc_xu_ctrl_query(chain, arg);
uvc_xu_ctrl_query 1411 drivers/media/usb/uvc/uvc_v4l2.c 		ret = uvc_xu_ctrl_query(handle->chain, &karg.xqry);
uvc_xu_ctrl_query  856 drivers/media/usb/uvc/uvcvideo.h int uvc_xu_ctrl_query(struct uvc_video_chain *chain,