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| author | Dejin Zheng <zhengdejin5@gmail.com> | 2020-03-24 00:06:08 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-24 12:09:38 +0100 |
| commit | 890cc39a879906b63912482dfc41944579df2dc6 (patch) | |
| tree | 7d252fd21393f02f3ca6d5f36e8b25f1a8be5a55 /drivers | |
| parent | d2e971d884e7b7e65162788b8f3b7801cd8bc137 (diff) | |
| download | linux-890cc39a879906b63912482dfc41944579df2dc6.tar.bz2 | |
drivers: provide devm_platform_get_and_ioremap_resource()
Since commit "drivers: provide devm_platform_ioremap_resource()",
it was wrap platform_get_resource() and devm_ioremap_resource() as
single helper devm_platform_ioremap_resource(). but now, many drivers
still used platform_get_resource() and devm_ioremap_resource()
together in the kernel tree. The reason can not be replaced is they
still need use the resource variables obtained by platform_get_resource().
so provide this helper.
Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Suggested-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com>
Link: https://lore.kernel.org/r/20200323160612.17277-2-zhengdejin5@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/base/platform.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index b5ce7b085795..8f0f62bdc58e 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 * |