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pinctrl: at91: use __maybe_unused to hide pm functions 

The at91-pio4 pinctrl driver uses SET_SYSTEM_SLEEP_PM_OPS() to
conditionally set the correct suspend/resume options, but they
become unused when CONFIG_PM is disabled:

drivers/pinctrl/pinctrl-at91-pio4.c:827:12: error: 'atmel_pctrl_suspend' defined but not used [-Werror=unused-function]
drivers/pinctrl/pinctrl-at91-pio4.c:847:12: error: 'atmel_pctrl_resume' defined but not used [-Werror=unused-function]

This adds __maybe_unused annotations so the compiler knows
it can silently drop them instead of warning.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Arnd Bergmann 2016-03-02 16:58:53 +01:00 committed by Linus Walleij
parent 331207af11
commit 6be2a3a076
1 changed files with 2 additions and 2 deletions
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4
drivers/pinctrl/pinctrl-at91-pio4.c
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@ -824,7 +824,7 @@ static struct pinctrl_desc atmel_pinctrl_desc = {
.pmxops = &atmel_pmxops,
};
static int atmel_pctrl_suspend(struct device *dev)
static int __maybe_unused atmel_pctrl_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct atmel_pioctrl *atmel_pioctrl = platform_get_drvdata(pdev);
@ -844,7 +844,7 @@ static int atmel_pctrl_suspend(struct device *dev)
return 0;
}
static int atmel_pctrl_resume(struct device *dev)
static int __maybe_unused atmel_pctrl_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct atmel_pioctrl *atmel_pioctrl = platform_get_drvdata(pdev);