[PATCH] gpio: intel-mid: Fix build warning when !CONFIG_PM

[PATCH] gpio: intel-mid: Fix build warning when !CONFIG_PM

[Augusto Mecking Caringi]

The only usage of function intel_gpio_runtime_idle() is here (in the
same file):

static const struct dev_pm_ops intel_gpio_pm_ops = {
	SET_RUNTIME_PM_OPS(NULL, NULL, intel_gpio_runtime_idle)
};

And when CONFIG_PM is not set, the macro SET_RUNTIME_PM_OPS expands to
nothing, causing the following compiler warning:

drivers/gpio/gpio-intel-mid.c:324:12: warning: ‘intel_gpio_runtime_idle’
defined but not used [-Wunused-function]
static int intel_gpio_runtime_idle(struct device *dev)

Fix it by annotating the function with __maybe_unused.

Signed-off-by: Augusto Mecking Caringi <augustocaringi@gmail.com>
---
 drivers/gpio/gpio-intel-mid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-intel-mid.c b/drivers/gpio/gpio-intel-mid.c
index a1e44c2..b76ecee 100644
--- a/drivers/gpio/gpio-intel-mid.c
+++ b/drivers/gpio/gpio-intel-mid.c
@@ -321,7 +321,7 @@ static void intel_mid_irq_init_hw(struct intel_mid_gpio *priv)
 	}
 }
 
-static int intel_gpio_runtime_idle(struct device *dev)
+static int __maybe_unused intel_gpio_runtime_idle(struct device *dev)
 {
 	int err = pm_schedule_suspend(dev, 500);
 	return err ?: -EBUSY;
-- 
2.7.4

Re: [PATCH] gpio: intel-mid: Fix build warning when !CONFIG_PM

[Andy Shevchenko]

On Mon, Jan 16, 2017 at 4:30 PM, Augusto Mecking Caringi
<augustocaringi@gmail.com> wrote:
> The only usage of function intel_gpio_runtime_idle() is here (in the
> same file):
>
> static const struct dev_pm_ops intel_gpio_pm_ops = {
>         SET_RUNTIME_PM_OPS(NULL, NULL, intel_gpio_runtime_idle)
> };
>
> And when CONFIG_PM is not set, the macro SET_RUNTIME_PM_OPS expands to
> nothing, causing the following compiler warning:
>
> drivers/gpio/gpio-intel-mid.c:324:12: warning: ‘intel_gpio_runtime_idle’
> defined but not used [-Wunused-function]
> static int intel_gpio_runtime_idle(struct device *dev)
>
> Fix it by annotating the function with __maybe_unused.

Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>

>
> Signed-off-by: Augusto Mecking Caringi <augustocaringi@gmail.com>
> ---
>  drivers/gpio/gpio-intel-mid.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpio/gpio-intel-mid.c b/drivers/gpio/gpio-intel-mid.c
> index a1e44c2..b76ecee 100644
> --- a/drivers/gpio/gpio-intel-mid.c
> +++ b/drivers/gpio/gpio-intel-mid.c
> @@ -321,7 +321,7 @@ static void intel_mid_irq_init_hw(struct intel_mid_gpio *priv)
>         }
>  }
>
> -static int intel_gpio_runtime_idle(struct device *dev)
> +static int __maybe_unused intel_gpio_runtime_idle(struct device *dev)
>  {
>         int err = pm_schedule_suspend(dev, 500);
>         return err ?: -EBUSY;
> --
> 2.7.4
>



-- 
With Best Regards,
Andy Shevchenko

Re: [PATCH] gpio: intel-mid: Fix build warning when !CONFIG_PM

[Linus Walleij]

On Mon, Jan 16, 2017 at 3:30 PM, Augusto Mecking Caringi
<augustocaringi@gmail.com> wrote:

> The only usage of function intel_gpio_runtime_idle() is here (in the
> same file):
>
> static const struct dev_pm_ops intel_gpio_pm_ops = {
>         SET_RUNTIME_PM_OPS(NULL, NULL, intel_gpio_runtime_idle)
> };
>
> And when CONFIG_PM is not set, the macro SET_RUNTIME_PM_OPS expands to
> nothing, causing the following compiler warning:
>
> drivers/gpio/gpio-intel-mid.c:324:12: warning: ‘intel_gpio_runtime_idle’
> defined but not used [-Wunused-function]
> static int intel_gpio_runtime_idle(struct device *dev)
>
> Fix it by annotating the function with __maybe_unused.
>
> Signed-off-by: Augusto Mecking Caringi <augustocaringi@gmail.com>

Patch applied with Andy's ACK.

Yours,
Linus Walleij