A_ESPI_INTR_STATUS
t1_write_reg_4(espi->adapter, A_ESPI_INTR_STATUS, 0xffffffff);
u32 status = t1_read_reg_4(espi->adapter, A_ESPI_INTR_STATUS);
t1_write_reg_4(espi->adapter, A_ESPI_INTR_STATUS, status);