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devres: allow const resource arguments

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[ Upstream commit 9dea44c91469512d346e638694c22c30a5273992 ]

devm_ioremap_resource() does not currently take 'const' arguments,
which results in a warning from the first driver trying to do it
anyway:

drivers/gpio/gpio-amd-fch.c: In function 'amd_fch_gpio_probe':
drivers/gpio/gpio-amd-fch.c:171:49: error: passing argument 2 of 'devm_ioremap_resource' discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
  priv->base = devm_ioremap_resource(&pdev->dev, &amd_fch_gpio_iores);
                                                 ^~~~~~~~~~~~~~~~~~~

Change the prototype to allow it, as there is no real reason not to.

Fixes: 9bb2e0452508 ("gpio: amd: Make resource struct const")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20190628150049.1108048-1-arnd@arndb.de
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviwed-By: Enrico Weigelt <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Arnd Bergmann 2019-06-28 16:59:45 +02:00 committed by Greg Kroah-Hartman
parent 37624e6350
commit 97464364e3
2 changed files with 4 additions and 2 deletions
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3
include/linux/device.h
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@ -682,7 +682,8 @@ extern unsigned long devm_get_free_pages(struct device *dev,
gfp_t gfp_mask, unsigned int order);
extern void devm_free_pages(struct device *dev, unsigned long addr);
void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res);
void __iomem *devm_ioremap_resource(struct device *dev,
const struct resource *res);
/* allows to add/remove a custom action to devres stack */
int devm_add_action(struct device *dev, void (*action)(void *), void *data);

3
lib/devres.c
View File

@ -132,7 +132,8 @@ EXPORT_SYMBOL(devm_iounmap);
* if (IS_ERR(base))
* return PTR_ERR(base);
*/
void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res)
void __iomem *devm_ioremap_resource(struct device *dev,
const struct resource *res)
{
resource_size_t size;
const char *name;