WI_EV_INFO_DROP
if (status & WI_EV_INFO_DROP) {
CSR_WRITE_2(sc, WI_EVENT_ACK, WI_EV_INFO_DROP);
(WI_EV_RX|WI_EV_TX|WI_EV_TX_EXC|WI_EV_ALLOC|WI_EV_INFO|WI_EV_INFO_DROP)