SER_CTS
msr |= SER_CTS;
*p_msr |= SER_CTS;
sc->sc_msr |= SER_CTS;
if (ISSET(bits, SER_CTS)) {
SET(rbits, SER_CTS);
if (sc->sc_msr & SER_CTS) {
sigon |= SER_CTS;
(msr_delta & SER_CTS)) {
pps_event(&sc->sc_pps, (sc->sc_msr & SER_CTS) ?
msr |= SER_CTS;
sc->sc_msr |= SER_CTS;
#define SER_DCTS SER_DELTA(SER_CTS)