linux-kernel - Re: [PATCH 1/2] pwm: pwm-mxs: use devm_platform_ioremap

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Date:   Tue, 24 Sep 2019 13:02:48 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Anson Huang <Anson.Huang@....com>
Cc:     shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
        festevam@...il.com, linux-pwm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Linux-imx@....com
Subject: Re: [PATCH 1/2] pwm: pwm-mxs: use devm_platform_ioremap_resource()
 to simplify code

On Tue, Sep 24, 2019 at 05:42:48PM +0800, Anson Huang wrote:
> Use the new helper devm_platform_ioremap_resource() which wraps the
> platform_get_resource() and devm_ioremap_resource() together, to
> simplify the code.
> 
> Signed-off-by: Anson Huang <Anson.Huang@....com>
> ---
> 	- This is a resend version of patch: https://patchwork.kernel.org/patch/11048365/
> ---
>  drivers/pwm/pwm-mxs.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)

When you do resend patches, please make sure to include an Reviewed-by
or Acked-by tags that you get.

In this case that's not necessary since I had already applied the other
patch.

Thierry

> 
> diff --git a/drivers/pwm/pwm-mxs.c b/drivers/pwm/pwm-mxs.c
> index 04c0f6b..b14376b 100644
> --- a/drivers/pwm/pwm-mxs.c
> +++ b/drivers/pwm/pwm-mxs.c
> @@ -126,15 +126,13 @@ static int mxs_pwm_probe(struct platform_device *pdev)
>  {
>  	struct device_node *np = pdev->dev.of_node;
>  	struct mxs_pwm_chip *mxs;
> -	struct resource *res;
>  	int ret;
>  
>  	mxs = devm_kzalloc(&pdev->dev, sizeof(*mxs), GFP_KERNEL);
>  	if (!mxs)
>  		return -ENOMEM;
>  
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	mxs->base = devm_ioremap_resource(&pdev->dev, res);
> +	mxs->base = devm_platform_ioremap_resource(pdev, 0);
>  	if (IS_ERR(mxs->base))
>  		return PTR_ERR(mxs->base);
>  
> -- 
> 2.7.4
> 

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