linux-kernel - [PATCH 5.10 080/132] ASoC: codecs: wcd934x: return correct value from mixer put

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Date:   Mon, 13 Dec 2021 10:30:21 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Mark Brown <broonie@...nel.org>
Subject: [PATCH 5.10 080/132] ASoC: codecs: wcd934x: return correct value from mixer put

From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>

commit d9be0ff4796d1b6f5ee391c1b7e3653a43cedfab upstream.

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@...aro.org>
Link: https://lore.kernel.org/r/20211130160507.22180-4-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 sound/soc/codecs/wcd934x.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/sound/soc/codecs/wcd934x.c
+++ b/sound/soc/codecs/wcd934x.c
@@ -2470,6 +2470,9 @@ static int wcd934x_compander_set(struct
 	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;
@@ -2493,10 +2496,10 @@ static int wcd934x_compander_set(struct
 	case COMPANDER_8:
 		break;
 	default:
-		break;
+		return 0;
 	}
 
-	return 0;
+	return 1;
 }
 
 static int wcd934x_rx_hph_mode_get(struct snd_kcontrol *kc,