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SubjectRe: [PATCH] drivers: add devm_platform_ioremap_resource_byname() helper
ping...

On Wed, Dec 11, 2019 at 4:31 AM Yangtao Li <tiny.windzz@gmail.com> wrote:
>
> There are currently 300+ instances of using platform_get_resource_byname()
> and devm_ioremap_resource() together in the kernel tree.
>
> This patch wraps these two calls in a single helper.
>
> Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
> ---
> drivers/base/platform.c | 22 +++++++++++++++++++++-
> include/linux/platform_device.h | 3 +++
> 2 files changed, 24 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/base/platform.c b/drivers/base/platform.c
> index b6c6c7d97d5b..9c4f5e229600 100644
> --- a/drivers/base/platform.c
> +++ b/drivers/base/platform.c
> @@ -60,6 +60,7 @@ struct resource *platform_get_resource(struct platform_device *dev,
> }
> EXPORT_SYMBOL_GPL(platform_get_resource);
>
> +#ifdef CONFIG_HAS_IOMEM
> /**
> * devm_platform_ioremap_resource - call devm_ioremap_resource() for a platform
> * device
> @@ -68,7 +69,7 @@ EXPORT_SYMBOL_GPL(platform_get_resource);
> * resource management
> * @index: resource index
> */
> -#ifdef CONFIG_HAS_IOMEM
> +
> void __iomem *devm_platform_ioremap_resource(struct platform_device *pdev,
> unsigned int index)
> {
> @@ -78,6 +79,25 @@ void __iomem *devm_platform_ioremap_resource(struct platform_device *pdev,
> return devm_ioremap_resource(&pdev->dev, res);
> }
> EXPORT_SYMBOL_GPL(devm_platform_ioremap_resource);
> +
> +/**
> + * devm_platform_ioremap_resource_byname - call devm_ioremap_resource() for
> + * a platform device
> + *
> + * @pdev: platform device to use both for memory resource lookup as well as
> + * resource managemend
> + * @name: resource name
> + */
> +void __iomem *
> +devm_platform_ioremap_resource_byname(struct platform_device *pdev,
> + const char *name)
> +{
> + struct resource *res;
> +
> + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
> + return devm_ioremap_resource(&pdev->dev, res);
> +}
> +EXPORT_SYMBOL_GPL(devm_platform_ioremap_resource_byname);
> #endif /* CONFIG_HAS_IOMEM */
>
> static int __platform_get_irq(struct platform_device *dev, unsigned int num)
> diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
> index 1b5cec067533..24ff5da9c532 100644
> --- a/include/linux/platform_device.h
> +++ b/include/linux/platform_device.h
> @@ -63,6 +63,9 @@ extern int platform_irq_count(struct platform_device *);
> extern struct resource *platform_get_resource_byname(struct platform_device *,
> unsigned int,
> const char *);
> +extern void __iomem *
> +devm_platform_ioremap_resource_byname(struct platform_device *pdev,
> + const char *name);
> extern int platform_get_irq_byname(struct platform_device *, const char *);
> extern int platform_add_devices(struct platform_device **, int);
>
> --
> 2.17.1
>

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