netdev - Re: [PATCH v2] ethernet: lantiq_xrx200: Use devm_platform_ioremap_resource() in xrx200

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Date:   Fri, 20 Sep 2019 21:23:58 +0200
From:   Hauke Mehrtens <hauke@...ke-m.de>
To:     Markus Elfring <Markus.Elfring@....de>, netdev@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Radhey Shyam Pandey <radheys@...inx.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH v2] ethernet: lantiq_xrx200: Use
 devm_platform_ioremap_resource() in xrx200_probe()

On 9/20/19 12:57 PM, Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Fri, 20 Sep 2019 11:48:33 +0200
> 
> Simplify this function implementation by using the wrapper function
> “devm_platform_ioremap_resource” instead of calling the functions
> “platform_get_resource” and “devm_ioremap_resource” directly.
> 
> * Thus reduce also a bit of exception handling code here.
> * Delete the local variable “res”.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>

Acked-by: Hauke Mehrtens <hauke@...ke-m.de>

But this can also wait till kernel 5.5.

> ---
> 
> v2:
> Further changes were requested by Radhey Shyam Pandey.
> 
> https://lore.kernel.org/r/CH2PR02MB700047AFFFE08FE5FD563541C78E0@CH2PR02MB7000.namprd02.prod.outlook.com/
> 
> 
> 
> * Updates for three modules were split into a separate patch for each driver.
> 
> * The commit description was adjusted.
> 
> 
> 
> 
> 
>  drivers/net/ethernet/lantiq_xrx200.c | 11 +----------
>  1 file changed, 1 insertion(+), 10 deletions(-)
> 
> diff --git a/drivers/net/ethernet/lantiq_xrx200.c b/drivers/net/ethernet/lantiq_xrx200.c
> index 900affbdcc0e..0a7ea45b9e59 100644
> --- a/drivers/net/ethernet/lantiq_xrx200.c
> +++ b/drivers/net/ethernet/lantiq_xrx200.c
> @@ -424,7 +424,6 @@ static int xrx200_probe(struct platform_device *pdev)
>  {
>  	struct device *dev = &pdev->dev;
>  	struct device_node *np = dev->of_node;
> -	struct resource *res;
>  	struct xrx200_priv *priv;
>  	struct net_device *net_dev;
>  	const u8 *mac;
> @@ -443,15 +442,7 @@ static int xrx200_probe(struct platform_device *pdev)
>  	SET_NETDEV_DEV(net_dev, dev);
>  	net_dev->min_mtu = ETH_ZLEN;
>  	net_dev->max_mtu = XRX200_DMA_DATA_LEN;
> -
> -	/* load the memory ranges */
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	if (!res) {
> -		dev_err(dev, "failed to get resources\n");
> -		return -ENOENT;
> -	}
> -
> -	priv->pmac_reg = devm_ioremap_resource(dev, res);
> +	priv->pmac_reg = devm_platform_ioremap_resource(pdev, 0);
>  	if (IS_ERR(priv->pmac_reg)) {
>  		dev_err(dev, "failed to request and remap io ranges\n");
>  		return PTR_ERR(priv->pmac_reg);
> --
> 2.23.0
> 




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