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 <[email protected]>
Signed-off-by: Nikolay Aleksandrov <[email protected]>
---
net/bridge/br_multicast.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index b83f11228948..33adf44ef7ec 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;
--
2.25.4
