FR_AZ_FATAL_INTR_KER
ef4_reado(efx, &fatal_intr, FR_AZ_FATAL_INTR_KER);
ef4_writeo(efx, &temp, FR_AZ_FATAL_INTR_KER);
efx_reado(efx, &fatal_intr, FR_AZ_FATAL_INTR_KER);
efx_writeo(efx, &temp, FR_AZ_FATAL_INTR_KER);