1 files changed, 32 insertions, 12 deletions

diff --git a/drivers/net/ethernet/ni/nixge.c b/drivers/net/ethernet/ni/nixge.c
index 73a98bd2fcd2..96f7a9818294 100644
--- a/drivers/net/ethernet/ni/nixge.c
+++ b/drivers/net/ethernet/ni/nixge.c
@@ -1282,6 +1282,7 @@ static int nixge_of_get_resources(struct platform_device *pdev)
 
 static int nixge_probe(struct platform_device *pdev)
 {
+	struct device_node *mn, *phy_node;
 	struct nixge_priv *priv;
 	struct net_device *ndev;
 	const u8 *mac_addr;
@@ -1335,10 +1336,14 @@ static int nixge_probe(struct platform_device *pdev)
 	priv->coalesce_count_rx = XAXIDMA_DFT_RX_THRESHOLD;
 	priv->coalesce_count_tx = XAXIDMA_DFT_TX_THRESHOLD;
 
-	err = nixge_mdio_setup(priv, pdev->dev.of_node);
-	if (err) {
-		netdev_err(ndev, "error registering mdio bus");
-		goto free_netdev;
+	mn = of_get_child_by_name(pdev->dev.of_node, "mdio");
+	if (mn) {
+		err = nixge_mdio_setup(priv, mn);
+		of_node_put(mn);
+		if (err) {
+			netdev_err(ndev, "error registering mdio bus");
+			goto free_netdev;
+		}
 	}
 
 	priv->phy_mode = of_get_phy_mode(pdev->dev.of_node);
@@ -1348,23 +1353,33 @@ static int nixge_probe(struct platform_device *pdev)
 		goto unregister_mdio;
 	}
 
-	priv->phy_node = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
-	if (!priv->phy_node) {
-		netdev_err(ndev, "not find \"phy-handle\" property\n");
-		err = -EINVAL;
-		goto unregister_mdio;
+	phy_node = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
+	if (!phy_node && of_phy_is_fixed_link(pdev->dev.of_node)) {
+		err = of_phy_register_fixed_link(pdev->dev.of_node);
+		if (err < 0) {
+			netdev_err(ndev, "broken fixed-link specification\n");
+			goto unregister_mdio;
+		}
+		phy_node = of_node_get(pdev->dev.of_node);
 	}
+	priv->phy_node = phy_node;
 
 	err = register_netdev(priv->ndev);
 	if (err) {
 		netdev_err(ndev, "register_netdev() error (%i)\n", err);
-		goto unregister_mdio;
+		goto free_phy;
 	}
 
 	return 0;
 
+free_phy:
+	if (of_phy_is_fixed_link(pdev->dev.of_node))
+		of_phy_deregister_fixed_link(pdev->dev.of_node);
+	of_node_put(phy_node);
+
 unregister_mdio:
-	mdiobus_unregister(priv->mii_bus);
+	if (priv->mii_bus)
+		mdiobus_unregister(priv->mii_bus);
 
 free_netdev:
 	free_netdev(ndev);
@@ -1379,7 +1394,12 @@ static int nixge_remove(struct platform_device *pdev)
 
 	unregister_netdev(ndev);
 
-	mdiobus_unregister(priv->mii_bus);
+	if (of_phy_is_fixed_link(pdev->dev.of_node))
+		of_phy_deregister_fixed_link(pdev->dev.of_node);
+	of_node_put(priv->phy_node);
+
+	if (priv->mii_bus)
+		mdiobus_unregister(priv->mii_bus);
 
 	free_netdev(ndev);