diff --git a/drivers/tty/hvc/virtio_console.c b/drivers/tty/hvc/virtio_console.c
index 896a2ced1d27952d9288a48911ee406ccabe1ee7..ad2520b1e03f418a1443db7581b04e0b936a989d 100644
--- a/drivers/tty/hvc/virtio_console.c
+++ b/drivers/tty/hvc/virtio_console.c
@@ -1462,6 +1462,17 @@ static void control_work_handler(struct work_struct *work)
 	spin_unlock(&portdev->cvq_lock);
 }
 
+static void out_intr(struct virtqueue *vq)
+{
+	struct port *port;
+
+	port = find_port_by_vq(vq->vdev->priv, vq);
+	if (!port)
+		return;
+
+	wake_up_interruptible(&port->waitqueue);
+}
+
 static void in_intr(struct virtqueue *vq)
 {
 	struct port *port;
@@ -1566,7 +1577,7 @@ static int init_vqs(struct ports_device *portdev)
 	 */
 	j = 0;
 	io_callbacks[j] = in_intr;
-	io_callbacks[j + 1] = NULL;
+	io_callbacks[j + 1] = out_intr;
 	io_names[j] = "input";
 	io_names[j + 1] = "output";
 	j += 2;
@@ -1580,7 +1591,7 @@ static int init_vqs(struct ports_device *portdev)
 		for (i = 1; i < nr_ports; i++) {
 			j += 2;
 			io_callbacks[j] = in_intr;
-			io_callbacks[j + 1] = NULL;
+			io_callbacks[j + 1] = out_intr;
 			io_names[j] = "input";
 			io_names[j + 1] = "output";
 		}