TWE_STATE_FRZN
if (sc->twe_state & (TWE_STATE_CTLR_BUSY | TWE_STATE_FRZN))
if (sc->twe_state & (TWE_STATE_CTLR_BUSY | TWE_STATE_FRZN)) {
sc->twe_state |= TWE_STATE_FRZN;
sc->twe_state &= ~TWE_STATE_FRZN;