diff options
| -rw-r--r-- | net/ipv6/mcast.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c index 0f389603283..a51fb33e686 100644 --- a/net/ipv6/mcast.c +++ b/net/ipv6/mcast.c @@ -303,20 +303,23 @@ static struct inet6_dev *ip6_mc_find_dev(struct net *net, dev = dev_get_by_index(net, ifindex); if (!dev) - return NULL; + goto nodev; idev = in6_dev_get(dev); - if (!idev) { - dev_put(dev); - return NULL; - } + if (!idev) + goto release; read_lock_bh(&idev->lock); - if (idev->dead) { - read_unlock_bh(&idev->lock); - in6_dev_put(idev); - dev_put(dev); - return NULL; - } + if (idev->dead) + goto unlock_release; + return idev; + +unlock_release: + read_unlock_bh(&idev->lock); + in6_dev_put(idev); +release: + dev_put(dev); +nodev: + return NULL; } void ipv6_sock_mc_close(struct sock *sk) |