diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index b3b63f7..29ae209 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -292,7 +292,7 @@
 	err = snd_usb_autoresume(cval->mixer->chip);
 	if (err < 0)
 		return -EIO;
-	mutex_lock(&chip->shutdown_mutex);
+	down_read(&chip->shutdown_rwsem);
 	while (timeout-- > 0) {
 		if (chip->shutdown)
 			break;
@@ -310,7 +310,7 @@
 	err = -EINVAL;
 
  out:
-	mutex_unlock(&chip->shutdown_mutex);
+	up_read(&chip->shutdown_rwsem);
 	snd_usb_autosuspend(cval->mixer->chip);
 	return err;
 }
@@ -337,7 +337,7 @@
 	if (ret)
 		goto error;
 
-	mutex_lock(&chip->shutdown_mutex);
+	down_read(&chip->shutdown_rwsem);
 	if (chip->shutdown)
 		ret = -ENODEV;
 	else {
@@ -346,7 +346,7 @@
 			      USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
 			      validx, idx, buf, size);
 	}
-	mutex_unlock(&chip->shutdown_mutex);
+	up_read(&chip->shutdown_rwsem);
 	snd_usb_autosuspend(chip);
 
 	if (ret < 0) {
@@ -453,7 +453,7 @@
 	err = snd_usb_autoresume(chip);
 	if (err < 0)
 		return -EIO;
-	mutex_lock(&chip->shutdown_mutex);
+	down_read(&chip->shutdown_rwsem);
 	while (timeout-- > 0) {
 		if (chip->shutdown)
 			break;
@@ -471,7 +471,7 @@
 	err = -EINVAL;
 
  out:
-	mutex_unlock(&chip->shutdown_mutex);
+	up_read(&chip->shutdown_rwsem);
 	snd_usb_autosuspend(chip);
 	return err;
 }