driver core: platform: Reimplement devm_platform_ioremap_resource

Reimplement devm_platform_ioremap_resource() by calling
devm_platform_ioremap_and_get_resource() with res = NULL to
simplify the code.

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com>
Link: https://lore.kernel.org/r/20200323160612.17277-6-zhengdejin5@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 8f0f62bdc58ef42afb91406bc8972249eaed5202..5255550b7c34f1aca050d76785c09713049b2e1c 100644 (file)
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -95,10 +95,7 @@ EXPORT_SYMBOL_GPL(devm_platform_get_and_ioremap_resource);
 void __iomem *devm_platform_ioremap_resource(struct platform_device *pdev,
                                             unsigned int index)
 {
-       struct resource *res;
-
-       res = platform_get_resource(pdev, IORESOURCE_MEM, index);
-       return devm_ioremap_resource(&pdev->dev, res);
+       return devm_platform_get_and_ioremap_resource(pdev, index, NULL);
 }
 EXPORT_SYMBOL_GPL(devm_platform_ioremap_resource);