vport.c: Use built-in RCU list checking

hlist_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@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/openvswitch/vport.c

@@ -96,7 +96,8 @@ struct vport *ovs_vport_locate(const struct net *net, const char *name)
 	struct hlist_head *bucket = hash_bucket(net, name);
 	struct vport *vport;
 
-	hlist_for_each_entry_rcu(vport, bucket, hash_node)
+	hlist_for_each_entry_rcu(vport, bucket, hash_node,
+				lockdep_ovsl_is_held())
 		if (!strcmp(name, ovs_vport_name(vport)) &&
 		    net_eq(ovs_dp_get_net(vport->dp), net))
 			return vport;