linux-kernel - Re: [PATCH] pinctrl: pinctrl-single: Convert to devm_ioremap

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Date:	Tue, 27 Aug 2013 16:19:18 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	"Vishwanathrao Badarkhe, Manish" <manishv.b@...com>
CC:	davinci-linux-open-source@...ux.davincidsp.com,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	tony@...mide.com, linus.walleij@...aro.org
Subject: Re: [PATCH] pinctrl: pinctrl-single: Convert to devm_ioremap_resource()

Hello.

On 27-08-2013 11:05, Vishwanathrao Badarkhe, Manish wrote:

> From: "Vishwanathrao Badarkhe, Manish" <manishv.b@...com>

> Convert devm_request_mem_region() and devm_ioremap() to
> devm_ioremap_resource() which provides more consistent
> error handling to manage resource.

> Signed-off-by: Vishwanathrao Badarkhe, Manish <manishv.b@...com>
> ---
> :100644 100644 7323cca... b0fef18... M	drivers/pinctrl/pinctrl-single.c
>   drivers/pinctrl/pinctrl-single.c |   21 +++------------------
>   1 file changed, 3 insertions(+), 18 deletions(-)

> diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
> index 7323cca..b0fef18 100644
> --- a/drivers/pinctrl/pinctrl-single.c
> +++ b/drivers/pinctrl/pinctrl-single.c
> @@ -1556,24 +1556,9 @@ static int pcs_probe(struct platform_device *pdev)
>   						  "pinctrl-single,bit-per-mux");
>
>   	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	if (!res) {
> -		dev_err(pcs->dev, "could not get resource\n");
> -		return -ENODEV;
> -	}
> -
> -	pcs->res = devm_request_mem_region(pcs->dev, res->start,
> -			resource_size(res), DRIVER_NAME);
> -	if (!pcs->res) {

    Is pcs->res used anywhere else?

> -		dev_err(pcs->dev, "could not get mem_region\n");
> -		return -EBUSY;
> -	}
> -
> -	pcs->size = resource_size(pcs->res);

    Is pcs->size used anywhere else?

> -	pcs->base = devm_ioremap(pcs->dev, pcs->res->start, pcs->size);
> -	if (!pcs->base) {
> -		dev_err(pcs->dev, "could not ioremap\n");
> -		return -ENODEV;
> -	}
> +	pcs->base = devm_ioremap_resource(pcs->dev, res);
> +	if (IS_ERR(pcs->base))
> +		return PTR_ERR(pcs->base);

WBR, Sergei

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