BUS_FREE_PHASE
hs->sc_phase = BUS_FREE_PHASE;
hs->sc_phase = BUS_FREE_PHASE;
if (hs->sc_phase == BUS_FREE_PHASE) {
hs->sc_phase = BUS_FREE_PHASE;
if (hs->sc_phase == BUS_FREE_PHASE)
hs->sc_phase = BUS_FREE_PHASE;