RCAR_CAN_EIFR_EWIF
if (eifr & (RCAR_CAN_EIFR_EWIF | RCAR_CAN_EIFR_EPIF)) {
if (eifr & RCAR_CAN_EIFR_EWIF) {
writeb((u8)~RCAR_CAN_EIFR_EWIF, &priv->regs->eifr);