netdev - RE: [PATCH net-next 1/1] sxgbe: fix driver probe error path and driver removal leaks

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Date:	Wed, 02 Apr 2014 18:04:55 -0700
From:	Byungho An <bh74.an@...sung.com>
To:	'Francois Romieu' <romieu@...zoreil.com>
Cc:	'David Miller' <davem@...emloft.net>, dan.carpenter@...cle.com,
	ks.giri@...sung.com, siva.kallam@...sung.com,
	vipul.pandya@...sung.com, netdev@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: RE: [PATCH net-next 1/1] sxgbe: fix driver probe error path and driver
 removal leaks

Francois Romieu <romieu@...zoreil.com> :
> sxgbe_drv_probe:  mdio and priv->hw leaks
> sxgbe_drv_remove: clk and priv->hw leaks
> 
> Signed-off-by: Francois Romieu <romieu@...zoreil.com>
> ---

Acked-by: Byungho An <bh74.an@...sung.com>

> 
>  Compiled, untested.
> 
>  drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c | 27
> ++++++++++++++++---------
>  1 file 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 a72688e..27e8c82 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);
> 
> --
> 1.9.0
> 
> --
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