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iio: magn/ak8974: avoid unused function warning

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The ak8974_configure() function is used only from the PM code,
but that can be hidden when CONFIG_PM is disabled:

drivers/iio/magnetometer/ak8974.c:201:12: error: 'ak8974_configure' defined but not used [-Werror=unused-function]

This replaces the #ifdef with a __maybe_unused annotation, which
will work correctly in all configurations and avoid the warning,
as the compiler can now see where ak8974_configure is called from.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 7c94a8b2ee ("iio: magn: add a driver for AK8974")
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Arnd Bergmann 2016-08-26 17:31:19 +02:00 committed by Jonathan Cameron
parent 2e1f44d8a7
commit 5bc55ef31f
1 changed files with 2 additions and 4 deletions
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6
drivers/iio/magnetometer/ak8974.c
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@ -783,8 +783,7 @@ static int __exit ak8974_remove(struct i2c_client *i2c)
return 0;
}
#ifdef CONFIG_PM
static int ak8974_runtime_suspend(struct device *dev)
static int __maybe_unused ak8974_runtime_suspend(struct device *dev)
{
struct ak8974 *ak8974 =
iio_priv(i2c_get_clientdata(to_i2c_client(dev)));
@ -795,7 +794,7 @@ static int ak8974_runtime_suspend(struct device *dev)
return 0;
}
static int ak8974_runtime_resume(struct device *dev)
static int __maybe_unused ak8974_runtime_resume(struct device *dev)
{
struct ak8974 *ak8974 =
iio_priv(i2c_get_clientdata(to_i2c_client(dev)));
@ -822,7 +821,6 @@ out_regulator_disable:
return ret;
}
#endif /* CONFIG_PM */
static const struct dev_pm_ops ak8974_dev_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,