PRB_CF_INTERRUPT_MASK
prb->prb_control |= htole16(PRB_CF_INTERRUPT_MASK);
prbp->prb_control |= htole16(PRB_CF_INTERRUPT_MASK);
htole16(PRB_CF_SOFT_RESET | PRB_CF_INTERRUPT_MASK);
prb->prb_control |= htole16(PRB_CF_INTERRUPT_MASK);