linux-kernel - [PATCH] drm/ingenic: Use resource_size function on resource object

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Message-Id: <20220624013159.88646-1-jiapeng.chong@linux.alibaba.com>
Date:   Fri, 24 Jun 2022 09:31:59 +0800
From:   Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
To:     paul@...pouillou.net
Cc:     airlied@...ux.ie, daniel@...ll.ch, linux-mips@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
Subject: [PATCH] drm/ingenic: Use resource_size function on resource object

This was found by coccicheck:

./drivers/gpu/drm/ingenic/ingenic-drm-drv.c:1149:35-38: WARNING: Suspicious code. resource_size is maybe missing with res.

Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
---
 drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
index 2c559885347a..5514b163999f 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
@@ -1146,7 +1146,7 @@ static int ingenic_drm_bind(struct device *dev, bool has_components)
 	}
 
 	regmap_config = ingenic_drm_regmap_config;
-	regmap_config.max_register = res->end - res->start;
+	regmap_config.max_register = resource_size(res);
 	priv->map = devm_regmap_init_mmio(dev, base,
 					  &regmap_config);
 	if (IS_ERR(priv->map)) {
-- 
2.20.1.7.g153144c