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

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Message-ID: <20250331173018043nQB6z_xgZxuYx0AkGeixh@zte.com.cn>
Date: Mon, 31 Mar 2025 17:30:18 +0800 (CST)
From: <shao.mingyin@....com.cn>
To: <j@...nau.net>, <liviu.dudau@....com>, <chunkuang.hu@...nel.org>
Cc: <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: [PATCH 2/4] drm: arm: hdlcd: Replace custom compare_dev with component_compare_of

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>
---
 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