linux-kernel - Re: [PATCH 2/4] drm: arm: hdlcd: Replace custom compare_dev with component_compare

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Message-ID: <Z-xWe6nHEvKHdvsd@e110455-lin.cambridge.arm.com>
Date: Tue, 1 Apr 2025 22:11:23 +0100
From: Liviu Dudau <liviu.dudau@....com>
To: shao.mingyin@....com.cn
Cc: j@...nau.net, chunkuang.hu@...nel.org, fnkl.kernel@...il.com,
	maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
	tzimmermann@...e.de, airlied@...il.com, simona@...ll.ch,
	dri-devel@...ts.freedesktop.org, asahi@...ts.linux.dev,
	linux-kernel@...r.kernel.org, p.zabel@...gutronix.de,
	matthias.bgg@...il.com, angelogioacchino.delregno@...labora.com,
	linux-mediatek@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, yang.yang29@....com.cn,
	xu.xin16@....com.cn, ye.xingchen@....com.cn,
	tang.dongxing@....com.cn
Subject: Re: [PATCH 2/4] drm: arm: hdlcd: Replace custom compare_dev with component_compare_of

On Mon, Mar 31, 2025 at 05:30:18PM +0800, shao.mingyin@....com.cn wrote:
> From: Tang Dongxing <tang.dongxing@....com.cn>
> 
> Remove the custom device comparison function compare_dev and replace it
> with the existing kernel helper component_compare_of
> 
> Signed-off-by: Tang Dongxing <tang.dongxing@....com.cn>
> Signed-off-by: Shao Mingyin <shao.mingyin@....com.cn>

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

Best regards,
Liviu Dudau

> ---
>  drivers/gpu/drm/arm/hdlcd_drv.c | 7 +------
>  1 file changed, 1 insertion(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c
> index c3179d74f3f5..45b1dc5613bf 100644
> --- a/drivers/gpu/drm/arm/hdlcd_drv.c
> +++ b/drivers/gpu/drm/arm/hdlcd_drv.c
> @@ -346,11 +346,6 @@ static const struct component_master_ops hdlcd_master_ops = {
>  	.unbind		= hdlcd_drm_unbind,
>  };
> 
> -static int compare_dev(struct device *dev, void *data)
> -{
> -	return dev->of_node == data;
> -}
> -
>  static int hdlcd_probe(struct platform_device *pdev)
>  {
>  	struct device_node *port;
> @@ -361,7 +356,7 @@ static int hdlcd_probe(struct platform_device *pdev)
>  	if (!port)
>  		return -ENODEV;
> 
> -	drm_of_component_match_add(&pdev->dev, &match, compare_dev, port);
> +	drm_of_component_match_add(&pdev->dev, &match, component_compare_of, port);
>  	of_node_put(port);
> 
>  	return component_master_add_with_match(&pdev->dev, &hdlcd_master_ops,
> -- 
> 2.25.1

-- 
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