UART_PPS_NARROW_PULSE
if (sc->sc_pps_mode & UART_PPS_NARROW_PULSE)
if (sc->sc_pps_mode & UART_PPS_NARROW_PULSE) {
if ((opt & ~(UART_PPS_INVERT_PULSE | UART_PPS_NARROW_PULSE)) != 0)
if (sc->sc_pps_mode & UART_PPS_NARROW_PULSE) {