[PATCH 3/4] ASoC: codecs: wcd934x: return correct value from mixer put

[Srinivas Kandagatla]

wcd934x_compander_set() currently returns zero eventhough it changes the value.
Fix this, so that change notifications are sent correctly.

Fixes: 1cde8b822332 ("ASoC: wcd934x: add basic controls")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>
---
 sound/soc/codecs/wcd934x.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/wcd934x.c b/sound/soc/codecs/wcd934x.c
index 3294c685d4d8..6c468527fec6 100644
--- a/sound/soc/codecs/wcd934x.c
+++ b/sound/soc/codecs/wcd934x.c
@@ -3256,6 +3256,9 @@ static int wcd934x_compander_set(struct snd_kcontrol *kc,
 	int value = ucontrol->value.integer.value[0];
 	int sel;
 
+	if (wcd->comp_enabled[comp] == value)
+		return 0;
+
 	wcd->comp_enabled[comp] = value;
 	sel = value ? WCD934X_HPH_GAIN_SRC_SEL_COMPANDER :
 		WCD934X_HPH_GAIN_SRC_SEL_REGISTER;
@@ -3279,10 +3282,10 @@ static int wcd934x_compander_set(struct snd_kcontrol *kc,
 	case COMPANDER_8:
 		break;
 	default:
-		break;
+		return 0;
 	}
 
-	return 0;
+	return 1;
 }
 
 static int wcd934x_rx_hph_mode_get(struct snd_kcontrol *kc,
-- 
2.21.0