clk: sprd: Switch from of_iomap() to devm_ioremap_resource()

devm_ioremap_resources() automatically requests resources and devm_ wrappers
do better error handling and unmapping of the I/O region when needed,
that would make drivers more clean and simple.

Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/sprd/common.c b/drivers/clk/sprd/common.c
index e038b04..9ce6909 100644 (file)
--- a/drivers/clk/sprd/common.c
+++ b/drivers/clk/sprd/common.c
@@ -42,6 +42,7 @@ int sprd_clk_regmap_init(struct platform_device *pdev,
        void __iomem *base;
        struct device_node *node = pdev->dev.of_node;
        struct regmap *regmap;
+       struct resource *res;
 
        if (of_find_property(node, "sprd,syscon", NULL)) {
                regmap = syscon_regmap_lookup_by_phandle(node, "sprd,syscon");
@@ -50,7 +51,11 @@ int sprd_clk_regmap_init(struct platform_device *pdev,
                        return PTR_ERR(regmap);
                }
        } else {
-               base = of_iomap(node, 0);
+               res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+               base = devm_ioremap_resource(&pdev->dev, res);
+               if (IS_ERR(base))
+                       return PTR_ERR(base);
+
                regmap = devm_regmap_init_mmio(&pdev->dev, base,
                                               &sprdclk_regmap_config);
                if (IS_ERR_OR_NULL(regmap)) {