netdev - Re: [PATCH net-next 7/9] net: lantiq

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Message-ID: <20241001153323.GT1310185@kernel.org>
Date: Tue, 1 Oct 2024 16:33:23 +0100
From: Simon Horman <horms@...nel.org>
To: Rosen Penev <rosenp@...il.com>
Cc: netdev@...r.kernel.org, andrew@...n.ch, davem@...emloft.net,
	edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
	linux-kernel@...r.kernel.org, olek2@...pl, shannon.nelson@....com
Subject: Re: [PATCH net-next 7/9] net: lantiq_etop: remove struct resource

On Mon, Sep 30, 2024 at 01:24:32PM -0700, Rosen Penev wrote:
> All of this can be simplified with devm_platformn_ioremap_resource. No
> need for extra code.
> 
> Signed-off-by: Rosen Penev <rosenp@...il.com>
> ---
>  drivers/net/ethernet/lantiq_etop.c | 23 +++--------------------
>  1 file changed, 3 insertions(+), 20 deletions(-)
> 
> diff --git a/drivers/net/ethernet/lantiq_etop.c b/drivers/net/ethernet/lantiq_etop.c
> index bc97b189785e..0cb5d536f351 100644
> --- a/drivers/net/ethernet/lantiq_etop.c
> +++ b/drivers/net/ethernet/lantiq_etop.c
> @@ -90,7 +90,6 @@ struct ltq_etop_priv {
>  	struct net_device *netdev;
>  	struct platform_device *pdev;
>  	struct ltq_eth_data *pldata;
> -	struct resource *res;
>  
>  	struct mii_bus *mii_bus;
>  
> @@ -620,28 +619,13 @@ ltq_etop_probe(struct platform_device *pdev)
>  {
>  	struct net_device *dev;
>  	struct ltq_etop_priv *priv;
> -	struct resource *res;
>  	int err;
>  	int i;
>  
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	if (!res) {
> -		dev_err(&pdev->dev, "failed to get etop resource");
> -		return -ENOENT;
> -	}
> -
> -	res = devm_request_mem_region(&pdev->dev, res->start,
> -				      resource_size(res), dev_name(&pdev->dev));
> -	if (!res) {
> -		dev_err(&pdev->dev, "failed to request etop resource");
> -		return -EBUSY;
> -	}
> -
> -	ltq_etop_membase = devm_ioremap(&pdev->dev, res->start,
> -					resource_size(res));
> -	if (!ltq_etop_membase) {
> +	ltq_etop_membase = devm_platformn_ioremap_resource(pdev, 0);

Hi Rosen,

I believe this should be devm_platform_ioremap_resource()

> +	if (IS_ERR(ltq_etop_membase)) {
>  		dev_err(&pdev->dev, "failed to remap etop engine %d", pdev->id);
> -		return -ENOMEM;
> +		return PTR_ERR(ltq_etop_membase);
>  	}
>  
>  	dev = devm_alloc_etherdev_mqs(&pdev->dev, sizeof(struct ltq_etop_priv),
> @@ -651,7 +635,6 @@ ltq_etop_probe(struct platform_device *pdev)
>  	dev->netdev_ops = &ltq_eth_netdev_ops;
>  	dev->ethtool_ops = &ltq_etop_ethtool_ops;
>  	priv = netdev_priv(dev);
> -	priv->res = res;
>  	priv->pdev = pdev;
>  	priv->pldata = dev_get_platdata(&pdev->dev);
>  	priv->netdev = dev;

-- 
pw-bot: changes-requested