[PATCH net-next 2/3] net: nixge: Add support for fixed-link configurations

[Moritz Fischer]

From: Moritz Fischer <m...@kernel.org>

Add support for fixed-link configurations to nixge driver.

Signed-off-by: Moritz Fischer <m...@kernel.org>
---
 drivers/net/ethernet/ni/nixge.c | 27 ++++++++++++++++++++-------
 1 file changed, 20 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/ni/nixge.c b/drivers/net/ethernet/ni/nixge.c
index c8dd1e4c759d..96f7a9818294 100644
--- a/drivers/net/ethernet/ni/nixge.c
+++ b/drivers/net/ethernet/ni/nixge.c
@@ -1282,9 +1282,9 @@ 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;
-       struct device_node *mn;
        const u8 *mac_addr;
        int err;
 
@@ -1353,21 +1353,30 @@ 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:
        if (priv->mii_bus)
                mdiobus_unregister(priv->mii_bus);
@@ -1385,6 +1394,10 @@ static int nixge_remove(struct platform_device *pdev)
 
        unregister_netdev(ndev);
 
+       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);
 
-- 
2.20.1