Commit 5edfbd3c authored Jul 20, 2017 by Tonghao Zhang Committed by David S. Miller Jul 24, 2017

tun/tap: Add the missed return value check of register_netdevice_notifier



There is some codes of tun/tap module which did not check the return
value of register_netdevice_notifier. Add the check now.

Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 6c7fce6f

drivers/net/tun.c

+9 −1

Original line number	Diff line number	Diff line
		@@ -2598,8 +2598,16 @@ static int __init tun_init(void)
		goto err_misc;
		}

		register_netdevice_notifier(&tun_notifier_block);
		ret = register_netdevice_notifier(&tun_notifier_block);
		if (ret) {
		pr_err("Can't register netdevice notifier\n");
		goto err_notifier;
		}

		return 0;

		err_notifier:
		misc_deregister(&tun_miscdev);
		err_misc:
		rtnl_link_unregister(&tun_link_ops);
		err_linkops: