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

[Jiapeng Chong]

Clean up the following coccicheck warning:

./drivers/gpu/drm/ingenic/ingenic-drm-drv.c:1110:35-38: WARNING:
Suspicious code. resource_size is maybe missing with res.

Reported-by: Abaci Robot <ab...@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.ch...@linux.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 ac52b49bf901..52ad5cab64bb 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
@@ -1107,7 +1107,7 @@ 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