uvc_ctrl_begin 962 drivers/media/usb/uvc/uvc_v4l2.c ret = uvc_ctrl_begin(chain); uvc_ctrl_begin 987 drivers/media/usb/uvc/uvc_v4l2.c ret = uvc_ctrl_begin(chain); uvc_ctrl_begin 1030 drivers/media/usb/uvc/uvc_v4l2.c ret = uvc_ctrl_begin(chain); uvc_ctrl_begin 1061 drivers/media/usb/uvc/uvc_v4l2.c ret = uvc_ctrl_begin(chain); uvc_ctrl_begin 838 drivers/media/usb/uvc/uvcvideo.h int uvc_ctrl_begin(struct uvc_video_chain *chain);