ASoC: rt286: Fix compilation warning for !PM

The rt286_index_sync() function is only called in the resume path. If PM
is disabled it becomes unused and shouldn't be built either.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/sound/soc/codecs/rt286.c b/sound/soc/codecs/rt286.c
index e4f6102efc1a..2bb5a27c70f4 100644
--- a/sound/soc/codecs/rt286.c
+++ b/sound/soc/codecs/rt286.c
@@ -270,6 +270,7 @@ static int rt286_hw_read(void *context, unsigned int reg, unsigned int *value)
         return 0;
 }
 
+#ifdef CONFIG_PM
 static void rt286_index_sync(struct snd_soc_codec *codec)
 {
         struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
@@ -280,6 +281,7 @@ static void rt286_index_sync(struct snd_soc_codec *codec)
                                   rt286->index_cache[i].def);
         }
 }
+#endif
 
 static int rt286_support_power_controls[] = {
         RT286_DAC_OUT1,