bridge: Allow set bridge ageing time when switchdev disabled

[ Upstream commit 5e263f7 ]

When NET_SWITCHDEV=n, switchdev_port_attr_set will return -EOPNOTSUPP,
we should ignore this error code and continue to set the ageing time.

Fixes: c62987b ("bridge: push bridge setting ageing_time down to switchdev")
Signed-off-by: Haishuang Yan <[email protected]>
Acked-by: Ido Schimmel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Haishuang Yan

net/bridge/br_stp.c

@@ -586,7 +586,7 @@ int br_set_ageing_time(struct net_bridge *br, u32 ageing_time)
 	int err;
 
 	err = switchdev_port_attr_set(br->dev, &attr);
-	if (err)
+	if (err && err != -EOPNOTSUPP)
 		return err;
 
 	br->ageing_time = t;