diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 543fa488d049ec90498e43127faf547c13d9f323..f2ec853e356d9cb27b331ae3880155cf1758e732 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -2334,8 +2334,8 @@ static int efx_set_features(struct net_device *net_dev, netdev_features_t data)
 	return 0;
 }
 
-int efx_get_phys_port_id(struct net_device *net_dev,
-			 struct netdev_phys_item_id *ppid)
+static int efx_get_phys_port_id(struct net_device *net_dev,
+				struct netdev_phys_item_id *ppid)
 {
 	struct efx_nic *efx = netdev_priv(net_dev);