--- x/drivers/bluetooth/hci_vhci.c
+++ y/drivers/bluetooth/hci_vhci.c
@@ -75,9 +75,7 @@ static int vhci_send_frame(struct hci_de
 
 	memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
 
-	mutex_lock(&data->open_mutex);
 	skb_queue_tail(&data->readq, skb);
-	mutex_unlock(&data->open_mutex);
 
 	wake_up_interruptible(&data->read_wait);
 	return 0;