wext: unregister_pernet_subsys() on notifier registration failure

If register_netdevice_notifier() fails (which in practice it can't
right now), we should call unregister_pernet_subsys(). Do that.

Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/wireless/wext-core.c b/net/wireless/wext-core.c
index b50ee5d622e14d4fb486ce0c533757e958702f54..6250b1cfcde58758bb480758d1c61217d37a7cd1 100644 (file)
--- a/net/wireless/wext-core.c
+++ b/net/wireless/wext-core.c
@@ -399,7 +399,10 @@ static int __init wireless_nlevent_init(void)
        if (err)
                return err;
 
-       return register_netdevice_notifier(&wext_netdev_notifier);
+       err = register_netdevice_notifier(&wext_netdev_notifier);
+       if (err)
+               unregister_pernet_subsys(&wext_pernet_ops);
+       return err;
 }
 
 subsys_initcall(wireless_nlevent_init);