linux-kernel - Re: [PATCH] drivers: net: ethernet: broadcom: bcm63xx: use devm_ioremap

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Message-ID: <518FE1AD.3090602@cogentembedded.com>
Date:	Sun, 12 May 2013 22:38:37 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Laurent Navet <laurent.navet@...il.com>
CC:	davem@...emloft.net, cernekee@...il.com, jogo@...nwrt.org,
	joe@...ches.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org
Subject: Re: [PATCH] drivers: net: ethernet: broadcom: bcm63xx: use devm_ioremap_resource()

Hello.

On 05/12/2013 07:56 PM, Laurent Navet wrote:

> Replace a call to deprecated devm_request_and_ioremap by devm_ioremap_resource.
>
> Found with coccicheck and this semantic patch:
>   scripts/coccinelle/api/devm_ioremap_resource.cocci
>
> Signed-off-by: Laurent Navet <laurent.navet@...il.com>
> ---
>   drivers/net/ethernet/broadcom/bcm63xx_enet.c |    6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.c b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
> index 0b3e23e..9de4217 100644
> --- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
> +++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
> @@ -1641,9 +1641,9 @@ static int bcm_enet_probe(struct platform_device *pdev)
>   	if (ret)
>   		goto out;
>   
> -	priv->base = devm_request_and_ioremap(&pdev->dev, res_mem);
> -	if (priv->base == NULL) {
> -		ret = -ENOMEM;
> +	priv->base = devm_ioremap_resource(&pdev->dev, res_mem);
> +	if (IS_ERR(priv->base)) {
> +		ret = PTR_ERR(priv->base);
>   		goto out;
>   	}
>

    You may as well delete a check for 'res_mem' being NULL above 
alloc_etherdev()
call since devm_ioremap_resource() checks for that too.

WBR, Sergei

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