UCBSND_IDLE
return (sc->sa_state != UCBSND_IDLE);
case UCBSND_IDLE:
sc->sa_state = UCBSND_IDLE;
sc->sa_state = UCBSND_IDLE;
sc->sa_state = UCBSND_IDLE;
if (!sc->sc_mute && sc->sa_state == UCBSND_IDLE) {
if (sc->sa_state == UCBSND_IDLE && ringbuf_full(&sc->sc_rb)) {