Messages in this thread Patch in this message | | | From | Bartosz Golaszewski <> | Subject | [PATCH v2 1/2] drivers: provide devm_platform_ioremap_resource() | Date | Wed, 20 Feb 2019 12:12:39 +0100 |
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From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
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> --- drivers/base/platform.c | 18 ++++++++++++++++++ include/linux/platform_device.h | 3 +++ 2 files changed, 21 insertions(+)
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 1c958eb33ef4..f82691e1c26c 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -79,6 +79,24 @@ struct resource *platform_get_resource(struct platform_device *dev, } 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 diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index c7c081dc6034..b126b73ed8ef 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -52,6 +52,9 @@ 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 *, -- 2.20.1
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