From: Arnd Bergmann <arnd@arndb.de>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Linus Walleij <linus.walleij@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>, Enrico Weigelt <info@metux.net>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Andrew Morton <akpm@linux-foundation.org>,
Andy Shevchenko <andy.shevchenko@gmail.com>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH] devres: allow const resource arguments
Date: Fri, 28 Jun 2019 16:59:45 +0200 [thread overview]
Message-ID: <20190628150049.1108048-1-arnd@arndb.de> (raw)
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>
---
The warning is currently in Linus Walleij's gpio tree, so I would
suggest he can queue up this fix as well, if Greg (or whoever
feels responsible for devres) agrees.
---
include/linux/device.h | 3 ++-
lib/devres.c | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/linux/device.h b/include/linux/device.h
index 4f65c424e5fd..f4ff92a6a56e 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -705,7 +705,8 @@ 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);
void __iomem *devm_of_iomap(struct device *dev,
struct device_node *node, int index,
diff --git a/lib/devres.c b/lib/devres.c
index 69bed2f38306..6a0e9bd6524a 100644
--- a/lib/devres.c
+++ b/lib/devres.c
@@ -131,7 +131,8 @@ 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;
void __iomem *dest_ptr;
--
2.20.0
next reply other threads:[~2019-06-28 15:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-28 14:59 Arnd Bergmann [this message]
2019-06-28 15:12 ` [PATCH] devres: allow const resource arguments Greg Kroah-Hartman
2019-07-02 20:26 ` Enrico Weigelt, metux IT consult
2019-07-03 8:09 ` Linus Walleij
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