[Bridge] [PATCH] bridge: br_stp: Use built-in RCU list checking

[madhuparnabhowmik10 at gmail.com]

From: Madhuparna Bhowmik <madhuparnabhowmik10 at gmail.com>

list_for_each_entry_rcu() has built-in RCU and lock checking.

Pass cond argument to list_for_each_entry_rcu() to silence
false lockdep warning when CONFIG_PROVE_RCU_LIST is enabled
by default.

Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10 at gmail.com>
---
 net/bridge/br_stp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/bridge/br_stp.c b/net/bridge/br_stp.c
index 1f1410f8d312..8be12452071b 100644
--- a/net/bridge/br_stp.c
+++ b/net/bridge/br_stp.c
@@ -52,7 +52,8 @@ struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no)
 {
 	struct net_bridge_port *p;
 
-	list_for_each_entry_rcu(p, &br->port_list, list) {
+	list_for_each_entry_rcu(p, &br->port_list, list,
+				lockdep_is_held(&br->lock)) {
 		if (p->port_no == port_no)
 			return p;
 	}
-- 
2.17.1