power: ipaq-micro-battery: use __maybe_unused to hide pm functions

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 <arnd@arndb.de>
Signed-off-by: Sebastian Reichel <sre@kernel.org>

diff --git a/drivers/power/ipaq_micro_battery.c b/drivers/power/ipaq_micro_battery.c
index f03014ea1dc4a4c229d57acacf040002c875ed8b..3f314b1a30d72af732acd7f9fd679bdfe34ba407 100644 (file)
--- 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);