sxgbe: fix driver probe error path and driver removal leaks

sxgbe_drv_probe:  mdio and priv->hw leaks
sxgbe_drv_remove: clk and priv->hw leaks

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Acked-by: Byungho An <bh74.an@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 17 insertions, 10 deletions

diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
index a72688e8dc6c..27e8c824b204 100644
--- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
+++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
@@ -2113,11 +2113,11 @@ struct sxgbe_priv_data *sxgbe_drv_probe(struct device *device,
         /* allocate memory resources for Descriptor rings */
         ret = txring_mem_alloc(priv);
         if (ret)
-                goto error_free_netdev;
+                goto error_free_hw;
 
         ret = rxring_mem_alloc(priv);
         if (ret)
-                goto error_free_netdev;
+                goto error_free_hw;
 
         ndev->netdev_ops = &sxgbe_netdev_ops;
 
@@ -2163,7 +2163,7 @@ struct sxgbe_priv_data *sxgbe_drv_probe(struct device *device,
         if (IS_ERR(priv->sxgbe_clk)) {
                 netdev_warn(ndev, "%s: warning: cannot get CSR clock\n",
                             __func__);
-                goto error_clk_get;
+                goto error_napi_del;
         }
 
         /* If a specific clk_csr value is passed from the platform
@@ -2182,24 +2182,27 @@ struct sxgbe_priv_data *sxgbe_drv_probe(struct device *device,
         if (ret < 0) {
                 netdev_dbg(ndev, "%s: MDIO bus (id: %d) registration failed\n",
                            __func__, priv->plat->bus_id);
-                goto error_mdio_register;
+                goto error_clk_put;
         }
 
         ret = register_netdev(ndev);
         if (ret) {
                 pr_err("%s: ERROR %i registering the device\n", __func__, ret);
-                goto error_netdev_register;
+                goto error_mdio_unregister;
         }
 
         sxgbe_check_ether_addr(priv);
 
         return priv;
 
-error_mdio_register:
+error_mdio_unregister:
+        sxgbe_mdio_unregister(ndev);
+error_clk_put:
         clk_put(priv->sxgbe_clk);
-error_clk_get:
-error_netdev_register:
+error_napi_del:
         netif_napi_del(&priv->napi);
+error_free_hw:
+        kfree(priv->hw);
 error_free_netdev:
         free_netdev(ndev);
 
@@ -2224,11 +2227,15 @@ int sxgbe_drv_remove(struct net_device *ndev)
         priv->hw->mac->enable_tx(priv->ioaddr, false);
         priv->hw->mac->enable_rx(priv->ioaddr, false);
 
-        netif_napi_del(&priv->napi);
+        unregister_netdev(ndev);
 
         sxgbe_mdio_unregister(ndev);
 
-        unregister_netdev(ndev);
+        clk_put(priv->sxgbe_clk);
+
+        netif_napi_del(&priv->napi);
+
+        kfree(priv->hw);
 
         free_netdev(ndev);