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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: 1bb6aa56bb ("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>
This commit is contained in:
Johan Hovold 2016-11-28 19:25:08 +01:00 committed by David S. Miller
parent c41a47678d
commit 14cab6f651
1 changed files with 9 additions and 1 deletions
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10
drivers/net/ethernet/ti/davinci_emac.c
View File

@ -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 @@ static int davinci_emac_probe(struct platform_device *pdev)
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;