net: ethernet: bcmgenet: fix fixed-link phydev 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.

Note that we're still leaking any fixed-link PHY registered in the
non-OF probe path.

Fixes: 9abf0c2b717a ("net: bcmgenet: use the new fixed PHY helpers")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c
index 2e745bd51df4..e87607621e62 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmmii.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c
@@ -627,6 +627,7 @@ static int bcmgenet_mii_bus_init(struct bcmgenet_priv *priv)
 int bcmgenet_mii_init(struct net_device *dev)
 {
         struct bcmgenet_priv *priv = netdev_priv(dev);
+        struct device_node *dn = priv->pdev->dev.of_node;
         int ret;
 
         ret = bcmgenet_mii_alloc(priv);
@@ -640,6 +641,8 @@ int bcmgenet_mii_init(struct net_device *dev)
         return 0;
 
 out:
+        if (of_phy_is_fixed_link(dn))
+                of_phy_deregister_fixed_link(dn);
         of_node_put(priv->phy_dn);
         mdiobus_unregister(priv->mii_bus);
         mdiobus_free(priv->mii_bus);
@@ -649,7 +652,10 @@ out:
 void bcmgenet_mii_exit(struct net_device *dev)
 {
         struct bcmgenet_priv *priv = netdev_priv(dev);
+        struct device_node *dn = priv->pdev->dev.of_node;
 
+        if (of_phy_is_fixed_link(dn))
+                of_phy_deregister_fixed_link(dn);
         of_node_put(priv->phy_dn);
         mdiobus_unregister(priv->mii_bus);
         mdiobus_free(priv->mii_bus);