ASoC: rt5682-sdw: fix 'defined but not used' pm functions

Gcc reports the following warnings:

sound/soc/codecs/rt5682-sdw.c:286:12: warning: 'rt5682_dev_resume'
defined but not used [-Wunused-function]
 static int rt5682_dev_resume(struct device *dev)

sound/soc/codecs/rt5682-sdw.c:273:12: warning: 'rt5682_dev_suspend'
defined but not used [-Wunused-function]
 static int rt5682_dev_suspend(struct device *dev)

Fix by adding maybe_unused as done for other SoundWire codecs

Fixes: 03f6fc6de9192f ('ASoC: rt5682: Add the soundwire support')
Reported-by: kbuild test robot <>
Signed-off-by: Pierre-Louis Bossart <>
Cc: Oder Chiou <>
Signed-off-by: Mark Brown <>
diff --git a/sound/soc/codecs/rt5682-sdw.c b/sound/soc/codecs/rt5682-sdw.c
index 1d6963d..a2d1d3a 100644
--- a/sound/soc/codecs/rt5682-sdw.c
+++ b/sound/soc/codecs/rt5682-sdw.c
@@ -270,7 +270,7 @@
 MODULE_DEVICE_TABLE(sdw, rt5682_id);
-static int rt5682_dev_suspend(struct device *dev)
+static int __maybe_unused rt5682_dev_suspend(struct device *dev)
 	struct rt5682_priv *rt5682 = dev_get_drvdata(dev);
@@ -283,7 +283,7 @@
 	return 0;
-static int rt5682_dev_resume(struct device *dev)
+static int __maybe_unused rt5682_dev_resume(struct device *dev)
 	struct sdw_slave *slave = dev_to_sdw_dev(dev);
 	struct rt5682_priv *rt5682 = dev_get_drvdata(dev);