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| author |   Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2019-10-22 10:43:13 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-05 18:32:21 +0100 |
| commit | b873af620e58863b70ae9cf97f6fab4cf4c544af (patch) | |
| tree | 11d74bd61433e6949461435d450b1819c9de4218 /lib | |
| parent | lib: devres: prepare devm_ioremap_resource() for more variants (diff) | |
| download | linux-dev-b873af620e58863b70ae9cf97f6fab4cf4c544af.tar.xz linux-dev-b873af620e58863b70ae9cf97f6fab4cf4c544af.zip | |
lib: devres: provide devm_ioremap_resource_wc()
Provide a variant of devm_ioremap_resource() for write-combined ioremap.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20191022084318.22256-4-brgl@bgdev.pl
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/devres.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/devres.c b/lib/devres.c index a14c727128c1..97fb44e5b4d6 100644 --- a/lib/devres.c +++ b/lib/devres.c @@ -169,6 +169,21 @@ void __iomem *devm_ioremap_resource(struct device *dev, } EXPORT_SYMBOL(devm_ioremap_resource); +/** + * devm_ioremap_resource_wc() - write-combined variant of + * devm_ioremap_resource() + * @dev: generic device to handle the resource for + * @res: resource to be handled + * + * Returns a pointer to the remapped memory or an ERR_PTR() encoded error code + * on failure. Usage example: + */ +void __iomem *devm_ioremap_resource_wc(struct device *dev, + const struct resource *res) +{ + return __devm_ioremap_resource(dev, res, DEVM_IOREMAP_WC); +} + /* * devm_of_iomap - Requests a resource and maps the memory mapped IO * for a given device_node managed by a given device |