net: ethernet: ti: davinci_emac: fix fixed-link phydev and of-node leaks

Make sure to deregister and free any fixed-link PHY registered using
of_phy_register_fixed_link() on probe errors and on driver unbind.

Also remember to put the of-node reference on probe errors.

Fixes: 1bb6aa56bb38 ("net: davinci_emac: Add support for fixed-link
PHY")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index 84fbe5714f8b50edd3902223b02cc42511b20244..481c7bf0395bfcdc3add56da8b01b61432415d81 100644 (file)
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -1767,6 +1767,7 @@ static int davinci_emac_try_get_mac(struct platform_device *pdev,
  */
 static int davinci_emac_probe(struct platform_device *pdev)
 {
+       struct device_node *np = pdev->dev.of_node;
        int rc = 0;
        struct resource *res, *res_ctrl;
        struct net_device *ndev;
@@ -1805,7 +1806,7 @@ static int davinci_emac_probe(struct platform_device *pdev)
        if (!pdata) {
                dev_err(&pdev->dev, "no platform data\n");
                rc = -ENODEV;
-               goto no_pdata;
+               goto err_free_netdev;
        }
 
        /* MAC addr and PHY mask , RMII enable info from platform_data */
@@ -1941,6 +1942,10 @@ no_cpdma_chan:
                cpdma_chan_destroy(priv->rxchan);
        cpdma_ctlr_destroy(priv->dma);
 no_pdata:
+       if (of_phy_is_fixed_link(np))
+               of_phy_deregister_fixed_link(np);
+       of_node_put(priv->phy_node);
+err_free_netdev:
        free_netdev(ndev);
        return rc;
 }
@@ -1956,6 +1961,7 @@ static int davinci_emac_remove(struct platform_device *pdev)
 {
        struct net_device *ndev = platform_get_drvdata(pdev);
        struct emac_priv *priv = netdev_priv(ndev);
+       struct device_node *np = pdev->dev.of_node;
 
        dev_notice(&ndev->dev, "DaVinci EMAC: davinci_emac_remove()\n");
 
@@ -1968,6 +1974,8 @@ static int davinci_emac_remove(struct platform_device *pdev)
        unregister_netdev(ndev);
        of_node_put(priv->phy_node);
        pm_runtime_disable(&pdev->dev);
+       if (of_phy_is_fixed_link(np))
+               of_phy_deregister_fixed_link(np);
        free_netdev(ndev);
 
        return 0;