Currently the Wake on Voice 2 control accepts and stores any value written but it reports that only 0 and 1 are valid values. Reject any out of range values written by userspace. Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> --- sound/soc/codecs/mt6358.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sound/soc/codecs/mt6358.c b/sound/soc/codecs/mt6358.c index 9004377461f7..89d0dcb2635b 100644 --- a/sound/soc/codecs/mt6358.c +++ b/sound/soc/codecs/mt6358.c @@ -560,6 +560,9 @@ static int mt6358_put_wov(struct snd_kcontrol *kcontrol, struct mt6358_priv *priv = snd_soc_component_get_drvdata(c); int enabled = ucontrol->value.integer.value[0]; + if (enabled < 0 || enabled > 1) + return -EINVAL; + if (priv->wov_enabled != enabled) { if (enabled) mt6358_enable_wov_phase2(priv); -- 2.30.2