diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
index 0f4203b499af..75c15085f81f 100644
--- a/drivers/bluetooth/hci_ldisc.c
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -479,6 +479,11 @@ static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file * file,
 			return hu->proto->id;
 		return -EUNATCH;
 
+	case HCIUARTGETDEVICE:
+		if (test_bit(HCI_UART_PROTO_SET, &hu->flags))
+			return hu->hdev->id;
+		return -EUNATCH;
+
 	default:
 		err = n_tty_ioctl(tty, file, cmd, arg);
 		break;
diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h
index b250e6789dee..1097ce72393f 100644
--- a/drivers/bluetooth/hci_uart.h
+++ b/drivers/bluetooth/hci_uart.h
@@ -28,8 +28,9 @@
 #endif
 
 /* Ioctls */
-#define HCIUARTSETPROTO	_IOW('U', 200, int)
-#define HCIUARTGETPROTO	_IOR('U', 201, int)
+#define HCIUARTSETPROTO		_IOW('U', 200, int)
+#define HCIUARTGETPROTO		_IOR('U', 201, int)
+#define HCIUARTGETDEVICE	_IOR('U', 202, int)
 
 /* UART protocols */
 #define HCI_UART_MAX_PROTO	4