RTW_INTR_RDU
if ((isr & (RTW_INTR_RDU|RTW_INTR_RXFOVW)) != 0) {
PRINTINTR(RTW_INTR_RDU);
#define RTW_INTR_IOERROR (RTW_INTR_TXFOVW|RTW_INTR_RXFOVW|RTW_INTR_RDU)