linux-kernel - [PATCH 04/30] iio: magnetometer: hmc5843: 'hmc5843_pm_ops' is unused in 1 of 3 files including hmc5843

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Message-Id: <20200717165538.3275050-5-lee.jones@linaro.org>
Date:   Fri, 17 Jul 2020 17:55:12 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     jic23@...nel.org, knaack.h@....de, lars@...afoo.de,
        pmeerw@...erw.net
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-iio@...r.kernel.org, Lee Jones <lee.jones@...aro.org>,
        Josef Gajdusek <atx@....name>
Subject: [PATCH 04/30] iio: magnetometer: hmc5843: 'hmc5843_pm_ops' is unused in 1 of 3 files including hmc5843_core.h

We know that it's okay for 'hmc5843_pm_ops' to be unused here.

Fixes the following W=1 kernel build warning(s):

 In file included from include/linux/device.h:25,
 from include/linux/iio/iio.h:10,
 from drivers/iio/magnetometer/hmc5843_core.c:16:
 drivers/iio/magnetometer/hmc5843.h:55:26: warning: ‘hmc5843_pm_ops’ defined but not used [-Wunused-const-variable=]
 55 | static SIMPLE_DEV_PM_OPS(hmc5843_pm_ops,
 | ^~~~~~~~~~~~~~
 include/linux/pm.h:354:25: note: in definition of macro ‘SIMPLE_DEV_PM_OPS’
 354 | const struct dev_pm_ops name = { | ^~~~

Cc: Josef Gajdusek <atx@....name>
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
 drivers/iio/magnetometer/hmc5843.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/magnetometer/hmc5843.h b/drivers/iio/magnetometer/hmc5843.h
index b0dee87a8b20e..3f6c0b6629415 100644
--- a/drivers/iio/magnetometer/hmc5843.h
+++ b/drivers/iio/magnetometer/hmc5843.h
@@ -52,9 +52,9 @@ int hmc5843_common_suspend(struct device *dev);
 int hmc5843_common_resume(struct device *dev);
 
 #ifdef CONFIG_PM_SLEEP
-static SIMPLE_DEV_PM_OPS(hmc5843_pm_ops,
-		hmc5843_common_suspend,
-		hmc5843_common_resume);
+static __maybe_unused SIMPLE_DEV_PM_OPS(hmc5843_pm_ops,
+					hmc5843_common_suspend,
+					hmc5843_common_resume);
 #define HMC5843_PM_OPS (&hmc5843_pm_ops)
 #else
 #define HMC5843_PM_OPS NULL
-- 
2.25.1