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-rw-r--r--drivers/base/platform.c27
1 files changed, 23 insertions, 4 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index b5ce7b085795..5255550b7c34 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -63,6 +63,28 @@ EXPORT_SYMBOL_GPL(platform_get_resource);
#ifdef CONFIG_HAS_IOMEM
/**
+ * devm_platform_get_and_ioremap_resource - call devm_ioremap_resource() for a
+ * platform device and get resource
+ *
+ * @pdev: platform device to use both for memory resource lookup as well as
+ * resource management
+ * @index: resource index
+ * @res: optional output parameter to store a pointer to the obtained resource.
+ */
+void __iomem *
+devm_platform_get_and_ioremap_resource(struct platform_device *pdev,
+ unsigned int index, struct resource **res)
+{
+ struct resource *r;
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, index);
+ if (res)
+ *res = r;
+ return devm_ioremap_resource(&pdev->dev, r);
+}
+EXPORT_SYMBOL_GPL(devm_platform_get_and_ioremap_resource);
+
+/**
* devm_platform_ioremap_resource - call devm_ioremap_resource() for a platform
* device
*
@@ -73,10 +95,7 @@ EXPORT_SYMBOL_GPL(platform_get_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);