UCDC_BREAK_ON     334 dev/usb/uipaq.c 	USETW(req.wValue, onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF);
UCDC_BREAK_ON     644 dev/usb/umodem.c 	USETW(req.wValue, onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF);
UCDC_BREAK_ON     566 dev/usb/uplcom.c 	USETW(req.wValue, onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF);