linux-kernel - Re: [PATCH -next 2/2] drm/arm/hdlcd: Use devm_platform_ioremap

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Date:   Tue, 14 Mar 2023 13:41:18 +0000
From:   Liviu Dudau <liviu.dudau@....com>
To:     Yang Li <yang.lee@...ux.alibaba.com>
Cc:     airlied@...il.com, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH -next 2/2] drm/arm/hdlcd: Use
 devm_platform_ioremap_resource()

On Tue, Mar 14, 2023 at 04:02:30PM +0800, Yang Li wrote:
> According to commit 7945f929f1a7 ("drivers: provide
> devm_platform_ioremap_resource()"), convert platform_get_resource(),
> devm_ioremap_resource() to a single call to Use
> devm_platform_ioremap_resource(), as this is exactly what this function
> does.
> 
> Since 'struct platform_device *pdev = to_platform_device(drm->dev)',
> 'drm->dev' is equivalent to 'pdev->deva'.
> 
> Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>

Acked-by: Liviu Dudau <liviu.dudau@....com>

Thanks for cleaning this up!

Best regards,
Liviu

> ---
>  drivers/gpu/drm/arm/hdlcd_drv.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c
> index e3507dd6f82a..a86b317c1312 100644
> --- a/drivers/gpu/drm/arm/hdlcd_drv.c
> +++ b/drivers/gpu/drm/arm/hdlcd_drv.c
> @@ -100,7 +100,6 @@ static int hdlcd_load(struct drm_device *drm, unsigned long flags)
>  {
>  	struct hdlcd_drm_private *hdlcd = drm_to_hdlcd_priv(drm);
>  	struct platform_device *pdev = to_platform_device(drm->dev);
> -	struct resource *res;
>  	u32 version;
>  	int ret;
>  
> @@ -115,8 +114,7 @@ static int hdlcd_load(struct drm_device *drm, unsigned long flags)
>  	atomic_set(&hdlcd->dma_end_count, 0);
>  #endif
>  
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	hdlcd->mmio = devm_ioremap_resource(drm->dev, res);
> +	hdlcd->mmio = devm_platform_ioremap_resource(pdev, 0);
>  	if (IS_ERR(hdlcd->mmio)) {
>  		DRM_ERROR("failed to map control registers area\n");
>  		ret = PTR_ERR(hdlcd->mmio);
> -- 
> 2.20.1.7.g153144c
> 

-- 
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