cs47l92_put_demux returns the value of snd_soc_dapm_mux_update_power,
which returns a 1 if a path was found for the kcontrol. This is
obviously different to the expected return a 1 if the control
was updated value. This results in spurious notifications to
user-space. Update the handling to only return a 1 when the value is
changed.
Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>
---
sound/soc/codecs/cs47l92.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/cs47l92.c b/sound/soc/codecs/cs47l92.c
index a1b8dcdb9f7b7..444026b7d54b3 100644
--- a/sound/soc/codecs/cs47l92.c
+++ b/sound/soc/codecs/cs47l92.c
@@ -119,7 +119,13 @@ static int cs47l92_put_demux(struct snd_kcontrol *kcontrol,
end:
snd_soc_dapm_mutex_unlock(dapm);
- return snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
+ ret = snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
+ if (ret < 0) {
+ dev_err(madera->dev, "Failed to update demux power state: %d\n", ret);
+ return ret;
+ }
+
+ return change;
}
static SOC_ENUM_SINGLE_DECL(cs47l92_outdemux_enum,
--
2.30.2
