bridge: fix rcu check warning in multicast port group

Use of RCU here with out marked pointer and function doesn't match prototype
with sparse.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 3 insertions, 2 deletions

diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index 0daae3ec2355..e4d5cd43b7fb 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -61,7 +61,8 @@ static int br_mdb_fill_info(struct sk_buff *skb, struct netlink_callback *cb,
 
         for (i = 0; i < mdb->max; i++) {
                 struct net_bridge_mdb_entry *mp;
-                struct net_bridge_port_group *p, **pp;
+                struct net_bridge_port_group *p;
+                struct net_bridge_port_group __rcu **pp;
                 struct net_bridge_port *port;
 
                 hlist_for_each_entry_rcu(mp, &mdb->mhash[i], hlist[mdb->ver]) {
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 1514c9f4f102..d41283c57952 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -466,7 +466,7 @@ extern void br_multicast_free_pg(struct rcu_head *head);
 extern struct net_bridge_port_group *br_multicast_new_port_group(
                                 struct net_bridge_port *port,
                                 struct br_ip *group,
-                                struct net_bridge_port_group *next,
+                                struct net_bridge_port_group __rcu *next,
                                 unsigned char state);
 extern void br_mdb_init(void);
 extern void br_mdb_uninit(void);