RIO_EM_PW_TX_CTRL
rio_write_config_32(rdev, rdev->em_efptr + RIO_EM_PW_TX_CTRL,
rio_write_config_32(rdev, rdev->em_efptr + RIO_EM_PW_TX_CTRL, 0);
rdev->em_efptr + RIO_EM_PW_TX_CTRL, 0);