diff --git a/drivers/mfd/hi655x-pmic.c b/drivers/mfd/hi655x-pmic.c
index a58e42ddcd0c..98ae40ee3f05 100644
--- a/drivers/mfd/hi655x-pmic.c
+++ b/drivers/mfd/hi655x-pmic.c
@@ -100,8 +100,7 @@ static int hi655x_pmic_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	pmic->dev = dev;
 
-	pmic->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	base = devm_ioremap_resource(dev, pmic->res);
+	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 
diff --git a/include/linux/mfd/hi655x-pmic.h b/include/linux/mfd/hi655x-pmic.h
index 6a012784dd1b..194556851ccf 100644
--- a/include/linux/mfd/hi655x-pmic.h
+++ b/include/linux/mfd/hi655x-pmic.h
@@ -52,7 +52,6 @@
 #define OTMP_D1R_INT_MASK               BIT(OTMP_D1R_INT)
 
 struct hi655x_pmic {
-	struct resource *res;
 	struct device *dev;
 	struct regmap *regmap;
 	struct gpio_desc *gpio;