PS_WAIT_FOR_TX_ACK
PS_WAIT_FOR_TX_ACK);
PS_WAIT_FOR_TX_ACK |
sc->ps_flags |= PS_WAIT_FOR_TX_ACK;
PS_WAIT_FOR_TX_ACK));
if ((sc->ps_flags & PS_WAIT_FOR_TX_ACK) && !txq->axq_depth) {
sc->ps_flags &= ~PS_WAIT_FOR_TX_ACK;
PS_WAIT_FOR_TX_ACK));