linux-kernel - Re: [PATCH] drivers: mtd: nand: davinci: use devm_ioremap

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Date:	Thu, 02 May 2013 17:30:24 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Laurent Navet <laurent.navet@...il.com>
CC:	dwmw2@...radead.org, artem.bityutskiy@...ux.intel.com,
	m-karicheri2@...com, mturquette@...aro.org,
	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers: mtd: nand: davinci: use devm_ioremap_resource()

Hello.

On 02-05-2013 17:22, 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_request_and_ioremap.cocci.

> Signed-off-by: Laurent Navet <laurent.navet@...il.com>
> ---
>   drivers/mtd/nand/davinci_nand.c |   13 ++++++++-----
>   1 file changed, 8 insertions(+), 5 deletions(-)

> diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c
> index 94e17af..4a96e58 100644
> --- a/drivers/mtd/nand/davinci_nand.c
> +++ b/drivers/mtd/nand/davinci_nand.c
> @@ -623,11 +623,14 @@ static int __init nand_davinci_probe(struct platform_device *pdev)
>   		goto err_nomem;
>   	}
>
> -	vaddr = devm_request_and_ioremap(&pdev->dev, res1);
> -	base = devm_request_and_ioremap(&pdev->dev, res2);
> -	if (!vaddr || !base) {
> -		dev_err(&pdev->dev, "ioremap failed\n");
> -		ret = -EADDRNOTAVAIL;
> +	vaddr = devm_ioremap_resource(&pdev->dev, res1);
> +	base = devm_ioremap_resource(&pdev->dev, res2);

    I'd rather put this line before its corresponding error check.

> +	if (IS_ERR(vaddr)) {
> +		ret = PTR_ERR(vaddr);
> +		goto err_ioremap;
> +	}
> +	if (IS_ERR(base)) {
> +		ret = PTR_ERR(base);
>   		goto err_ioremap;
>   	}

WBR, Sergei

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