From: Nikolay Aleksandrov Date: Tue, 8 Sep 2020 07:17:13 +0000 (+0300) Subject: net: bridge: mcast: fix unused br var when lockdep isn't defined X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=071445c6051f71e98d0fa9bbbb0ae575c677cb20;p=linux.git net: bridge: mcast: fix unused br var when lockdep isn't defined Stephen reported the following warning: net/bridge/br_multicast.c: In function 'br_multicast_find_port': net/bridge/br_multicast.c:1818:21: warning: unused variable 'br' [-Wunused-variable] 1818 | struct net_bridge *br = mp->br; | ^~ It happens due to bridge's mlock_dereference() when lockdep isn't defined. Silence the warning by annotating the variable as __maybe_unused. Fixes: 0436862e417e ("net: bridge: mcast: support for IGMPv3/MLDv2 ALLOW_NEW_SOURCES report") Reported-by: Stephen Rothwell Signed-off-by: Nikolay Aleksandrov Signed-off-by: David S. Miller --- diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index b83f11228948d..33adf44ef7ecb 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -1814,8 +1814,8 @@ br_multicast_find_port(struct net_bridge_mdb_entry *mp, struct net_bridge_port *p, const unsigned char *src) { + struct net_bridge *br __maybe_unused = mp->br; struct net_bridge_port_group *pg; - struct net_bridge *br = mp->br; for (pg = mlock_dereference(mp->ports, br); pg;