linux-kernel - [PATCH 4.19 67/88] ASoC: wm8958: Fix change notifications for DSP controls

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Date:   Tue, 10 May 2022 15:07:52 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Mark Brown <broonie@...nel.org>,
        Charles Keepax <ckeepax@...nsource.cirrus.com>
Subject: [PATCH 4.19 67/88] ASoC: wm8958: Fix change notifications for DSP controls

From: Mark Brown <broonie@...nel.org>

commit b4f5c6b2e52b27462c0599e64e96e53b58438de1 upstream.

The WM8958 DSP controls all return 0 on successful write, not a boolean
value indicating if the write changed the value of the control. Fix this
by returning 1 after a change, there is already a check at the start of
each put() that skips the function in the case that there is no change.

Signed-off-by: Mark Brown <broonie@...nel.org>
Acked-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
Link: https://lore.kernel.org/r/20220416125408.197440-1-broonie@kernel.org
Cc: stable@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 sound/soc/codecs/wm8958-dsp2.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/sound/soc/codecs/wm8958-dsp2.c
+++ b/sound/soc/codecs/wm8958-dsp2.c
@@ -537,7 +537,7 @@ static int wm8958_mbc_put(struct snd_kco
 
 	wm8958_dsp_apply(component, mbc, wm8994->mbc_ena[mbc]);
 
-	return 0;
+	return 1;
 }
 
 #define WM8958_MBC_SWITCH(xname, xval) {\
@@ -663,7 +663,7 @@ static int wm8958_vss_put(struct snd_kco
 
 	wm8958_dsp_apply(component, vss, wm8994->vss_ena[vss]);
 
-	return 0;
+	return 1;
 }
 
 
@@ -737,7 +737,7 @@ static int wm8958_hpf_put(struct snd_kco
 
 	wm8958_dsp_apply(component, hpf % 3, ucontrol->value.integer.value[0]);
 
-	return 0;
+	return 1;
 }
 
 #define WM8958_HPF_SWITCH(xname, xval) {\
@@ -831,7 +831,7 @@ static int wm8958_enh_eq_put(struct snd_
 
 	wm8958_dsp_apply(component, eq, ucontrol->value.integer.value[0]);
 
-	return 0;
+	return 1;
 }
 
 #define WM8958_ENH_EQ_SWITCH(xname, xval) {\