linux-kernel - [PATCH 3/4] ASoC: mt8192: Report an error if when an invalid sidetone gain is written

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Date:   Fri, 24 Feb 2023 14:03:57 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>, alsa-devel@...a-project.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Mark Brown <broonie@...nel.org>
Subject: [PATCH 3/4] ASoC: mt8192: Report an error if when an invalid
 sidetone gain is written

Reporting an error on invalid values is optional but helpful to userspace
so do so.

Signed-off-by: Mark Brown <broonie@...nel.org>
---
 sound/soc/mediatek/mt8192/mt8192-dai-adda.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/mediatek/mt8192/mt8192-dai-adda.c b/sound/soc/mediatek/mt8192/mt8192-dai-adda.c
index a33d1ce33349..a02a297c0450 100644
--- a/sound/soc/mediatek/mt8192/mt8192-dai-adda.c
+++ b/sound/soc/mediatek/mt8192/mt8192-dai-adda.c
@@ -601,6 +601,8 @@ static int stf_positive_gain_set(struct snd_kcontrol *kcontrol,
 					 POSITIVE_GAIN_MASK_SFT,
 					 (gain_db / 6) << POSITIVE_GAIN_SFT,
 					 &change);
+	} else {
+		return -EINVAL;
 	}
 
 	return change;

-- 
2.30.2