The ipaq micro battery driver has suspend/resume functions that are accessed using SIMPLE_DEV_PM_OPS, which hide the reference when CONFIG_PM_SLEEP is not set, resulting in a warning about unused functions:
drivers/power/ipaq_micro_battery.c:284:12: error: 'micro_batt_suspend' defined but not used [-Werror=unused-function] drivers/power/ipaq_micro_battery.c:292:12: error: 'micro_batt_resume' defined but not used [-Werror=unused-function] This adds __maybe_unused annotations to let the compiler know it can silently drop the function definition. Signed-off-by: Arnd Bergmann <a...@arndb.de> --- drivers/power/ipaq_micro_battery.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/power/ipaq_micro_battery.c b/drivers/power/ipaq_micro_battery.c index f03014ea1dc4..3f314b1a30d7 100644 --- a/drivers/power/ipaq_micro_battery.c +++ b/drivers/power/ipaq_micro_battery.c @@ -281,7 +281,7 @@ static int micro_batt_remove(struct platform_device *pdev) return 0; } -static int micro_batt_suspend(struct device *dev) +static int __maybe_unused micro_batt_suspend(struct device *dev) { struct micro_battery *mb = dev_get_drvdata(dev); @@ -289,7 +289,7 @@ static int micro_batt_suspend(struct device *dev) return 0; } -static int micro_batt_resume(struct device *dev) +static int __maybe_unused micro_batt_resume(struct device *dev) { struct micro_battery *mb = dev_get_drvdata(dev); -- 2.7.0