static int __init ib_uverbs_init(void)
{
	int ret;

	ret = register_chrdev_region(IB_UVERBS_BASE_DEV, IB_UVERBS_MAX_DEVICES,
				     "infiniband_verbs");
	if (ret) {
		pr_err("user_verbs: couldn't register device number\n");
		goto out;
	}

	uverbs_class = class_create(THIS_MODULE, "infiniband_verbs");
	if (IS_ERR(uverbs_class)) {
		ret = PTR_ERR(uverbs_class);
		pr_err("user_verbs: couldn't create class infiniband_verbs\n");
		goto out_chrdev;
	}

	uverbs_class->devnode = uverbs_devnode;

	ret = class_create_file(uverbs_class, &class_attr_abi_version.attr);
	if (ret) {
		pr_err("user_verbs: couldn't create abi_version attribute\n");
		goto out_class;
	}

	ret = ib_register_client(&uverbs_client);
	if (ret) {
		pr_err("user_verbs: couldn't register client\n");
		goto out_class;
	}

	return 0;

out_class:
	class_destroy(uverbs_class);

out_chrdev:
	unregister_chrdev_region(IB_UVERBS_BASE_DEV, IB_UVERBS_MAX_DEVICES);

out:
	return ret;
}
static int __init ib_uverbs_init(void)
{
	int ret;

	ret = register_chrdev_region(IB_UVERBS_BASE_DEV, IB_UVERBS_MAX_DEVICES,
				     "infiniband_verbs");
	if (ret) {
		pr_err("user_verbs: couldn't register device number\n");
		goto out;
	}

	uverbs_class = class_create(THIS_MODULE, "infiniband_verbs");
	if (IS_ERR(uverbs_class)) {
		ret = PTR_ERR(uverbs_class);
		pr_err("user_verbs: couldn't create class infiniband_verbs\n");
		goto out_chrdev;
	}

	uverbs_class->devnode = uverbs_devnode;

	ret = class_create_file(uverbs_class, &class_attr_abi_version.attr);
	if (ret) {
		pr_err("user_verbs: couldn't create abi_version attribute\n");
		goto out_class;
	}

	ret = ib_register_client(&uverbs_client);
	if (ret) {
		pr_err("user_verbs: couldn't register client\n");
		goto out_class;
	}

	return 0;

out_class:
	class_destroy(uverbs_class);

out_chrdev:
	unregister_chrdev_region(IB_UVERBS_BASE_DEV, IB_UVERBS_MAX_DEVICES);

out:
	return ret;
}