From: Arnd Bergmann <arnd@arndb.de>
To: Linus Walleij <linus.walleij@linaro.org>,
Jonathan Cameron <jic23@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>, Hartmut Knaack <knaack.h@gmx.de>,
Lars-Peter Clausen <lars@metafoo.de>,
Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] iio: magn/ak8974: avoid unused function warning
Date: Fri, 26 Aug 2016 17:31:19 +0200 [thread overview]
Message-ID: <20160826153137.701672-1-arnd@arndb.de> (raw)
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: 7c94a8b2ee8c ("iio: magn: add a driver for AK8974")
---
drivers/iio/magnetometer/ak8974.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/iio/magnetometer/ak8974.c b/drivers/iio/magnetometer/ak8974.c
index e70e4e22b72c..12bd17b4cf58 100644
--- a/drivers/iio/magnetometer/ak8974.c
+++ b/drivers/iio/magnetometer/ak8974.c
@@ -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,
--
2.9.0
next reply other threads:[~2016-08-26 15:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-26 15:31 Arnd Bergmann [this message]
2016-08-29 13:21 ` [PATCH] iio: magn/ak8974: avoid unused function warning Linus Walleij
2016-08-29 18:55 ` Jonathan Cameron
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