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

[Mark Brown]

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

Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
 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