From 7945f929f1a77a1c8887a97ca07f87626858ff42 Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Wed, 20 Feb 2019 11:12:39 +0000 Subject: [PATCH] drivers: provide devm_platform_ioremap_resource() 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 Acked-by: Greg Kroah-Hartman Reviewed-by: Andy Shevchenko Signed-off-by: Linus Walleij --- 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 @@ -81,6 +81,24 @@ 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 *,