cfg80211: change return value of notifier function

Return NOTIFY_DONE if we don't care this time's notification, return
NOTIFY_OK if we successfully handled this time's notification. That's
the formal way to do it.
Signed-off-by: NZhao, Gang <gamerh2o@gmail.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

net/wireless/core.c

@@ -1002,9 +1002,11 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
 		if (rfkill_blocked(rdev->rfkill))
 			return notifier_from_errno(-ERFKILL);
 		break;
+	default:
+		return NOTIFY_DONE;
 	}
 
-	return NOTIFY_DONE;
+	return NOTIFY_OK;
 }
 
 static struct notifier_block cfg80211_netdev_notifier = {

net/wireless/nl80211.c

@@ -11672,7 +11672,7 @@ static int nl80211_netlink_notify(struct notifier_block * nb,
 
 	rcu_read_unlock();
 
-	return NOTIFY_DONE;
+	return NOTIFY_OK;
 }
 
 static struct notifier_block nl80211_netlink_notifier = {