UHSO_PORT_MUXREADY
SET(hp->hp_flags, UHSO_PORT_MUXREADY);
CLR(hp->hp_flags, UHSO_PORT_MUXBUSY | UHSO_PORT_MUXREADY);
CLR(hp->hp_flags, UHSO_PORT_MUXREADY);
if (hp->hp_rlen == 0 && !ISSET(hp->hp_flags, UHSO_PORT_MUXREADY))
CLR(hp->hp_flags, UHSO_PORT_MUXREADY);