* [PATCH] gpio: mxc: fix unused function warnings
@ 2023-07-18 19:39 Arnd Bergmann
2023-07-18 19:54 ` Andy Shevchenko
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Arnd Bergmann @ 2023-07-18 19:39 UTC (permalink / raw)
To: Linus Walleij, Bartosz Golaszewski, Andy Shevchenko, Shenwei Wang
Cc: Arnd Bergmann, Andy Shevchenko, Marek Vasut, Marc Zyngier,
Dan Carpenter, linux-gpio, linux-kernel
From: Arnd Bergmann <arnd@arndb.de>
The new runtime PM support causes a harmless warning about
unused functions when runtime PM is disabled:
drivers/gpio/gpio-mxc.c:612:12: error: 'mxc_gpio_runtime_resume' defined but not used [-Werror=unused-function]
drivers/gpio/gpio-mxc.c:602:12: error: 'mxc_gpio_runtime_suspend' defined but not used [-Werror=unused-function]
Change the driver to use the more modern helper macros that avoid these
warnings, and remove the now unnecessary __maybe_unused annotations
Fixes: 3283d820dce64 ("gpio: mxc: add runtime pm support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/gpio/gpio-mxc.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
index a9fb6bd9aa6f9..e03fc8d375fe1 100644
--- a/drivers/gpio/gpio-mxc.c
+++ b/drivers/gpio/gpio-mxc.c
@@ -623,7 +623,7 @@ static int mxc_gpio_runtime_resume(struct device *dev)
return 0;
}
-static int __maybe_unused mxc_gpio_noirq_suspend(struct device *dev)
+static int mxc_gpio_noirq_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct mxc_gpio_port *port = platform_get_drvdata(pdev);
@@ -634,7 +634,7 @@ static int __maybe_unused mxc_gpio_noirq_suspend(struct device *dev)
return 0;
}
-static int __maybe_unused mxc_gpio_noirq_resume(struct device *dev)
+static int mxc_gpio_noirq_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct mxc_gpio_port *port = platform_get_drvdata(pdev);
@@ -647,8 +647,8 @@ static int __maybe_unused mxc_gpio_noirq_resume(struct device *dev)
}
static const struct dev_pm_ops mxc_gpio_dev_pm_ops = {
- SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(mxc_gpio_noirq_suspend, mxc_gpio_noirq_resume)
- SET_RUNTIME_PM_OPS(mxc_gpio_runtime_suspend, mxc_gpio_runtime_resume, NULL)
+ NOIRQ_SYSTEM_SLEEP_PM_OPS(mxc_gpio_noirq_suspend, mxc_gpio_noirq_resume)
+ RUNTIME_PM_OPS(mxc_gpio_runtime_suspend, mxc_gpio_runtime_resume, NULL)
};
static int mxc_gpio_syscore_suspend(void)
--
2.39.2
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH] gpio: mxc: fix unused function warnings
2023-07-18 19:39 [PATCH] gpio: mxc: fix unused function warnings Arnd Bergmann
@ 2023-07-18 19:54 ` Andy Shevchenko
2023-07-19 9:44 ` Dan Carpenter
2023-07-20 15:23 ` Bartosz Golaszewski
2 siblings, 0 replies; 6+ messages in thread
From: Andy Shevchenko @ 2023-07-18 19:54 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Linus Walleij, Bartosz Golaszewski, Shenwei Wang, Arnd Bergmann,
Andy Shevchenko, Marek Vasut, Marc Zyngier, Dan Carpenter,
linux-gpio, linux-kernel
On Tue, Jul 18, 2023 at 10:39 PM Arnd Bergmann <arnd@kernel.org> wrote:
>
> From: Arnd Bergmann <arnd@arndb.de>
>
> The new runtime PM support causes a harmless warning about
> unused functions when runtime PM is disabled:
>
> drivers/gpio/gpio-mxc.c:612:12: error: 'mxc_gpio_runtime_resume' defined but not used [-Werror=unused-function]
> drivers/gpio/gpio-mxc.c:602:12: error: 'mxc_gpio_runtime_suspend' defined but not used [-Werror=unused-function]
>
> Change the driver to use the more modern helper macros that avoid these
> warnings, and remove the now unnecessary __maybe_unused annotations
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
> Fixes: 3283d820dce64 ("gpio: mxc: add runtime pm support")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> drivers/gpio/gpio-mxc.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
> index a9fb6bd9aa6f9..e03fc8d375fe1 100644
> --- a/drivers/gpio/gpio-mxc.c
> +++ b/drivers/gpio/gpio-mxc.c
> @@ -623,7 +623,7 @@ static int mxc_gpio_runtime_resume(struct device *dev)
> return 0;
> }
>
> -static int __maybe_unused mxc_gpio_noirq_suspend(struct device *dev)
> +static int mxc_gpio_noirq_suspend(struct device *dev)
> {
> struct platform_device *pdev = to_platform_device(dev);
> struct mxc_gpio_port *port = platform_get_drvdata(pdev);
> @@ -634,7 +634,7 @@ static int __maybe_unused mxc_gpio_noirq_suspend(struct device *dev)
> return 0;
> }
>
> -static int __maybe_unused mxc_gpio_noirq_resume(struct device *dev)
> +static int mxc_gpio_noirq_resume(struct device *dev)
> {
> struct platform_device *pdev = to_platform_device(dev);
> struct mxc_gpio_port *port = platform_get_drvdata(pdev);
> @@ -647,8 +647,8 @@ static int __maybe_unused mxc_gpio_noirq_resume(struct device *dev)
> }
>
> static const struct dev_pm_ops mxc_gpio_dev_pm_ops = {
> - SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(mxc_gpio_noirq_suspend, mxc_gpio_noirq_resume)
> - SET_RUNTIME_PM_OPS(mxc_gpio_runtime_suspend, mxc_gpio_runtime_resume, NULL)
> + NOIRQ_SYSTEM_SLEEP_PM_OPS(mxc_gpio_noirq_suspend, mxc_gpio_noirq_resume)
> + RUNTIME_PM_OPS(mxc_gpio_runtime_suspend, mxc_gpio_runtime_resume, NULL)
> };
>
> static int mxc_gpio_syscore_suspend(void)
> --
> 2.39.2
>
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] gpio: mxc: fix unused function warnings
2023-07-18 19:39 [PATCH] gpio: mxc: fix unused function warnings Arnd Bergmann
2023-07-18 19:54 ` Andy Shevchenko
@ 2023-07-19 9:44 ` Dan Carpenter
2023-07-19 11:26 ` Arnd Bergmann
2023-07-20 15:23 ` Bartosz Golaszewski
2 siblings, 1 reply; 6+ messages in thread
From: Dan Carpenter @ 2023-07-19 9:44 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Linus Walleij, Bartosz Golaszewski, Andy Shevchenko, Shenwei Wang,
Arnd Bergmann, Andy Shevchenko, Marek Vasut, Marc Zyngier,
Dan Carpenter, linux-gpio, linux-kernel
On Tue, Jul 18, 2023 at 09:39:08PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
>
> The new runtime PM support causes a harmless warning about
> unused functions when runtime PM is disabled:
>
> drivers/gpio/gpio-mxc.c:612:12: error: 'mxc_gpio_runtime_resume' defined but not used [-Werror=unused-function]
> drivers/gpio/gpio-mxc.c:602:12: error: 'mxc_gpio_runtime_suspend' defined but not used [-Werror=unused-function]
>
> Change the driver to use the more modern helper macros that avoid these
> warnings, and remove the now unnecessary __maybe_unused annotations
>
> Fixes: 3283d820dce64 ("gpio: mxc: add runtime pm support")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
The patch is nice, but I don't understand why __maybe_unused doesn't
work?
regards,
dan carpenter
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] gpio: mxc: fix unused function warnings
2023-07-19 9:44 ` Dan Carpenter
@ 2023-07-19 11:26 ` Arnd Bergmann
2023-07-19 11:30 ` Dan Carpenter
0 siblings, 1 reply; 6+ messages in thread
From: Arnd Bergmann @ 2023-07-19 11:26 UTC (permalink / raw)
To: Dan Carpenter, Arnd Bergmann
Cc: Linus Walleij, Bartosz Golaszewski, Andy Shevchenko, Shenwei Wang,
Andy Shevchenko, Marek Vasut, Marc Zyngier, Dan Carpenter,
open list:GPIO SUBSYSTEM, linux-kernel
On Wed, Jul 19, 2023, at 11:44, Dan Carpenter wrote:
> On Tue, Jul 18, 2023 at 09:39:08PM +0200, Arnd Bergmann wrote:
>> From: Arnd Bergmann <arnd@arndb.de>
>>
>> The new runtime PM support causes a harmless warning about
>> unused functions when runtime PM is disabled:
>>
>> drivers/gpio/gpio-mxc.c:612:12: error: 'mxc_gpio_runtime_resume' defined but not used [-Werror=unused-function]
>> drivers/gpio/gpio-mxc.c:602:12: error: 'mxc_gpio_runtime_suspend' defined but not used [-Werror=unused-function]
>>
>> Change the driver to use the more modern helper macros that avoid these
>> warnings, and remove the now unnecessary __maybe_unused annotations
>>
>> Fixes: 3283d820dce64 ("gpio: mxc: add runtime pm support")
>> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
>> ---
>
> The patch is nice, but I don't understand why __maybe_unused doesn't
> work?
Adding __maybe_unused to both mxc_gpio_runtime_resume and
mxc_gpio_runtime_suspend would avoid the warning, and that is
what we used to do in the past before we had the new macros,
including for the mxc_gpio_noirq_suspend/mxc_gpio_noirq_resume
functions in this driver.
Since I'm moving the driver to the new method, it's best to
do it for both pairs of PM functions at the same time, so
the __maybe_unused annotation becomes redundant.
Arnd
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] gpio: mxc: fix unused function warnings
2023-07-19 11:26 ` Arnd Bergmann
@ 2023-07-19 11:30 ` Dan Carpenter
0 siblings, 0 replies; 6+ messages in thread
From: Dan Carpenter @ 2023-07-19 11:30 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Arnd Bergmann, Linus Walleij, Bartosz Golaszewski,
Andy Shevchenko, Shenwei Wang, Andy Shevchenko, Marek Vasut,
Marc Zyngier, Dan Carpenter, open list:GPIO SUBSYSTEM,
linux-kernel
On Wed, Jul 19, 2023 at 01:26:06PM +0200, Arnd Bergmann wrote:
> Adding __maybe_unused to both mxc_gpio_runtime_resume and
> mxc_gpio_runtime_suspend would avoid the warning, and that is
> what we used to do in the past before we had the new macros,
> including for the mxc_gpio_noirq_suspend/mxc_gpio_noirq_resume
> functions in this driver.
>
> Since I'm moving the driver to the new method, it's best to
> do it for both pairs of PM functions at the same time, so
> the __maybe_unused annotation becomes redundant.
Ah, sorry. I misread the patch.
regards,
dan carpenter
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] gpio: mxc: fix unused function warnings
2023-07-18 19:39 [PATCH] gpio: mxc: fix unused function warnings Arnd Bergmann
2023-07-18 19:54 ` Andy Shevchenko
2023-07-19 9:44 ` Dan Carpenter
@ 2023-07-20 15:23 ` Bartosz Golaszewski
2 siblings, 0 replies; 6+ messages in thread
From: Bartosz Golaszewski @ 2023-07-20 15:23 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Linus Walleij, Andy Shevchenko, Shenwei Wang, Arnd Bergmann,
Andy Shevchenko, Marek Vasut, Marc Zyngier, Dan Carpenter,
linux-gpio, linux-kernel
On Tue, Jul 18, 2023 at 9:39 PM Arnd Bergmann <arnd@kernel.org> wrote:
>
> From: Arnd Bergmann <arnd@arndb.de>
>
> The new runtime PM support causes a harmless warning about
> unused functions when runtime PM is disabled:
>
> drivers/gpio/gpio-mxc.c:612:12: error: 'mxc_gpio_runtime_resume' defined but not used [-Werror=unused-function]
> drivers/gpio/gpio-mxc.c:602:12: error: 'mxc_gpio_runtime_suspend' defined but not used [-Werror=unused-function]
>
> Change the driver to use the more modern helper macros that avoid these
> warnings, and remove the now unnecessary __maybe_unused annotations
>
> Fixes: 3283d820dce64 ("gpio: mxc: add runtime pm support")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> drivers/gpio/gpio-mxc.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
> index a9fb6bd9aa6f9..e03fc8d375fe1 100644
> --- a/drivers/gpio/gpio-mxc.c
> +++ b/drivers/gpio/gpio-mxc.c
> @@ -623,7 +623,7 @@ static int mxc_gpio_runtime_resume(struct device *dev)
> return 0;
> }
>
> -static int __maybe_unused mxc_gpio_noirq_suspend(struct device *dev)
> +static int mxc_gpio_noirq_suspend(struct device *dev)
> {
> struct platform_device *pdev = to_platform_device(dev);
> struct mxc_gpio_port *port = platform_get_drvdata(pdev);
> @@ -634,7 +634,7 @@ static int __maybe_unused mxc_gpio_noirq_suspend(struct device *dev)
> return 0;
> }
>
> -static int __maybe_unused mxc_gpio_noirq_resume(struct device *dev)
> +static int mxc_gpio_noirq_resume(struct device *dev)
> {
> struct platform_device *pdev = to_platform_device(dev);
> struct mxc_gpio_port *port = platform_get_drvdata(pdev);
> @@ -647,8 +647,8 @@ static int __maybe_unused mxc_gpio_noirq_resume(struct device *dev)
> }
>
> static const struct dev_pm_ops mxc_gpio_dev_pm_ops = {
> - SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(mxc_gpio_noirq_suspend, mxc_gpio_noirq_resume)
> - SET_RUNTIME_PM_OPS(mxc_gpio_runtime_suspend, mxc_gpio_runtime_resume, NULL)
> + NOIRQ_SYSTEM_SLEEP_PM_OPS(mxc_gpio_noirq_suspend, mxc_gpio_noirq_resume)
> + RUNTIME_PM_OPS(mxc_gpio_runtime_suspend, mxc_gpio_runtime_resume, NULL)
> };
>
> static int mxc_gpio_syscore_suspend(void)
> --
> 2.39.2
>
Applied, thanks!
Bart
^ permalink raw reply [flat|nested] 6+ messages in thread
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2023-07-18 19:39 [PATCH] gpio: mxc: fix unused function warnings Arnd Bergmann
2023-07-18 19:54 ` Andy Shevchenko
2023-07-19 9:44 ` Dan Carpenter
2023-07-19 11:26 ` Arnd Bergmann
2023-07-19 11:30 ` Dan Carpenter
2023-07-20 15:23 ` Bartosz Golaszewski
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