diff --git a/sound/drivers/opl3/opl3_midi.c b/sound/drivers/opl3/opl3_midi.c
index 6d3c5b5a35ff..de611214cdac 100644
--- a/sound/drivers/opl3/opl3_midi.c
+++ b/sound/drivers/opl3/opl3_midi.c
@@ -632,6 +632,21 @@ static void snd_opl3_kill_voice(struct snd_opl3 *opl3, int voice)
 
 }
 
+void snd_opl3_clear_voices(struct snd_opl3 *opl3)
+{
+	int i;
+
+	guard(spinlock_irqsave)(&opl3->voice_lock);
+	/* A 4-op primary clears its higher-numbered partner's state. */
+	for (i = MAX_OPL3_VOICES - 1; i >= 0; i--) {
+		if (opl3->voices[i].state > 0)
+			snd_opl3_kill_voice(opl3, i);
+		opl3->voices[i].chan = NULL;
+		opl3->voices[i].note_off_check = 0;
+		opl3->voices[i].state = SNDRV_OPL3_ST_OFF;
+	}
+}
+
 /*
  * Release a note in response to a midi note off.
  */
diff --git a/sound/drivers/opl3/opl3_oss.c b/sound/drivers/opl3/opl3_oss.c
index 6d39b2b77b80..1f01d27955fe 100644
--- a/sound/drivers/opl3/opl3_oss.c
+++ b/sound/drivers/opl3/opl3_oss.c
@@ -41,6 +41,7 @@ static void snd_opl3_oss_free_port(void *private_data)
 {
 	struct snd_opl3 *opl3 = private_data;
 
+	snd_opl3_clear_voices(opl3);
 	snd_midi_channel_free_set(opl3->oss_chset);
 }
 
diff --git a/sound/drivers/opl3/opl3_seq.c b/sound/drivers/opl3/opl3_seq.c
index 2bacefc3201d..e03c88377bb6 100644
--- a/sound/drivers/opl3/opl3_seq.c
+++ b/sound/drivers/opl3/opl3_seq.c
@@ -152,6 +152,7 @@ static void snd_opl3_synth_free_port(void *private_data)
 {
 	struct snd_opl3 *opl3 = private_data;
 
+	snd_opl3_clear_voices(opl3);
 	snd_midi_channel_free_set(opl3->chset);
 }
 
diff --git a/sound/drivers/opl3/opl3_voice.h b/sound/drivers/opl3/opl3_voice.h
index be9ccca2d952..aa81512d23c9 100644
--- a/sound/drivers/opl3/opl3_voice.h
+++ b/sound/drivers/opl3/opl3_voice.h
@@ -13,6 +13,7 @@ int snd_opl3_synth_use_inc(struct snd_opl3 * opl3);
 void snd_opl3_synth_use_dec(struct snd_opl3 * opl3);
 int snd_opl3_synth_setup(struct snd_opl3 * opl3);
 void snd_opl3_synth_cleanup(struct snd_opl3 * opl3);
+void snd_opl3_clear_voices(struct snd_opl3 *opl3);
 
 /* Prototypes for opl3_midi.c */
 void snd_opl3_note_on(void *p, int note, int vel, struct snd_midi_channel *chan);