diff --git a/sound/soc/codecs/wcd9330.c b/sound/soc/codecs/wcd9330.c
index fa396aa55ac9..1258c83e26a1 100644
--- a/sound/soc/codecs/wcd9330.c
+++ b/sound/soc/codecs/wcd9330.c
@@ -1536,6 +1536,13 @@ static int tomtom_mad_input_put(struct snd_kcontrol *kcontrol,
 	tomtom_mad_input = ucontrol->value.integer.value[0];
 	micb_4_int_reg = tomtom->resmgr.reg_addr->micb_4_int_rbias;
 
+	if (tomtom_mad_input >= ARRAY_SIZE(tomtom_conn_mad_text)) {
+		dev_err(codec->dev,
+			"%s: tomtom_mad_input = %d out of bounds\n",
+			__func__, tomtom_mad_input);
+		return -EINVAL;
+	}
+
 	pr_debug("%s: tomtom_mad_input = %s\n", __func__,
 			tomtom_conn_mad_text[tomtom_mad_input]);