wm8998_inmux_put 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/wm8998.c | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)
diff --git a/sound/soc/codecs/wm8998.c b/sound/soc/codecs/wm8998.c
index 00b59fc9b1fe0..ab5481187c710 100644
--- a/sound/soc/codecs/wm8998.c
+++ b/sound/soc/codecs/wm8998.c
@@ -108,6 +108,7 @@ static int wm8998_inmux_put(struct snd_kcontrol *kcontrol,
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
unsigned int mode_reg, mode_index;
unsigned int mux, inmode, src_val, mode_val;
+ int change, ret;
mux = ucontrol->value.enumerated.item[0];
if (mux > 1)
@@ -137,14 +138,20 @@ static int wm8998_inmux_put(struct snd_kcontrol *kcontrol,
snd_soc_component_update_bits(component, mode_reg,
ARIZONA_IN1_MODE_MASK, mode_val);
- snd_soc_component_update_bits(component, e->reg,
- ARIZONA_IN1L_SRC_MASK |
- ARIZONA_IN1L_SRC_SE_MASK,
- src_val);
+ change = snd_soc_component_update_bits(component, e->reg,
+ ARIZONA_IN1L_SRC_MASK |
+ ARIZONA_IN1L_SRC_SE_MASK,
+ src_val);
- return snd_soc_dapm_mux_update_power(dapm, kcontrol,
- ucontrol->value.enumerated.item[0],
- e, NULL);
+ ret = snd_soc_dapm_mux_update_power(dapm, kcontrol,
+ ucontrol->value.enumerated.item[0],
+ e, NULL);
+ if (ret < 0) {
+ dev_err(arizona->dev, "Failed to update demux power state: %d\n", ret);
+ return ret;
+ }
+
+ return change;
}
static const char * const wm8998_inmux_texts[] = {
--
2.30.2
