From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Date: Wed, 20 Feb 2019 11:12:39 +0000
Subject: drivers: provide devm_platform_ioremap_resource()
Patch-mainline: v5.1-rc1
Git-commit: 7945f929f1a77a1c8887a97ca07f87626858ff42
References: bsc#1136333 jsc#SLE-4994

There are currently 1200+ instances of using platform_get_resource()
and devm_ioremap_resource() together in the kernel tree.

This patch wraps these two calls in a single helper. Thanks to that
we don't have to declare a local variable for struct resource * and can
omit the redundant argument for resource type. We also have one
function call less.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/base/platform.c         |   18 ++++++++++++++++++
 include/linux/platform_device.h |    3 +++
 2 files changed, 21 insertions(+)

--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -80,6 +80,24 @@ struct resource *platform_get_resource(s
 EXPORT_SYMBOL_GPL(platform_get_resource);
 
 /**
+ * devm_platform_ioremap_resource - call devm_ioremap_resource() for a platform
+ *				    device
+ *
+ * @pdev: platform device to use both for memory resource lookup as well as
+ *        resource managemend
+ * @index: resource index
+ */
+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);
+}
+EXPORT_SYMBOL_GPL(devm_platform_ioremap_resource);
+
+/**
  * platform_get_irq - get an IRQ for a device
  * @dev: platform device
  * @num: IRQ number index
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -51,6 +51,9 @@ extern struct device platform_bus;
 extern void arch_setup_pdev_archdata(struct platform_device *);
 extern struct resource *platform_get_resource(struct platform_device *,
 					      unsigned int, unsigned int);
+extern void __iomem *
+devm_platform_ioremap_resource(struct platform_device *pdev,
+			       unsigned int index);
 extern int platform_get_irq(struct platform_device *, unsigned int);
 extern int platform_irq_count(struct platform_device *);
 extern struct resource *platform_get_resource_byname(struct platform_device *,