rdma_set_device_sysfs_group(&ibdev->ib_dev, &mlx4_attr_group);
ibdev->ib_dev.driver_id = RDMA_DRIVER_MLX4;
- if (ib_register_device(&ibdev->ib_dev, "mlx4_%d", NULL))
+ if (ib_register_device(&ibdev->ib_dev, "mlx4_%d"))
goto err_diag_counters;
if (mlx4_ib_mad_init(ibdev))