[PATCH net v2 5/5] net: qcom/emac: fix of_node and phydev leaks

[Johan Hovold]

Make sure to drop the reference taken by of_phy_find_device() during
probe on probe errors and on driver unbind.

Also drop the of_node reference taken by of_parse_phandle() in the same
path.

Fixes: b9b17debc69d ("net: emac: emac gigabit ethernet controller driver")
Signed-off-by: Johan Hovold <jo...@kernel.org>
---
 drivers/net/ethernet/qualcomm/emac/emac-phy.c | 1 +
 drivers/net/ethernet/qualcomm/emac/emac.c     | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/drivers/net/ethernet/qualcomm/emac/emac-phy.c 
b/drivers/net/ethernet/qualcomm/emac/emac-phy.c
index da4e90db4d98..99a14df28b96 100644
--- a/drivers/net/ethernet/qualcomm/emac/emac-phy.c
+++ b/drivers/net/ethernet/qualcomm/emac/emac-phy.c
@@ -212,6 +212,7 @@ int emac_phy_config(struct platform_device *pdev, struct 
emac_adapter *adpt)
 
                phy_np = of_parse_phandle(np, "phy-handle", 0);
                adpt->phydev = of_phy_find_device(phy_np);
+               of_node_put(phy_np);
        }
 
        if (!adpt->phydev) {
diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c 
b/drivers/net/ethernet/qualcomm/emac/emac.c
index 4fede4b86538..57b35aeac51a 100644
--- a/drivers/net/ethernet/qualcomm/emac/emac.c
+++ b/drivers/net/ethernet/qualcomm/emac/emac.c
@@ -711,6 +711,8 @@ static int emac_probe(struct platform_device *pdev)
 err_undo_napi:
        netif_napi_del(&adpt->rx_q.napi);
 err_undo_mdiobus:
+       if (!has_acpi_companion(&pdev->dev))
+               put_device(&adpt->phydev->mdio.dev);
        mdiobus_unregister(adpt->mii_bus);
 err_undo_clocks:
        emac_clks_teardown(adpt);
@@ -730,6 +732,8 @@ static int emac_remove(struct platform_device *pdev)
 
        emac_clks_teardown(adpt);
 
+       if (!has_acpi_companion(&pdev->dev))
+               put_device(&adpt->phydev->mdio.dev);
        mdiobus_unregister(adpt->mii_bus);
        free_netdev(netdev);
 
-- 
2.7.3