virtio: console: Wake up outvq on host notifications

[mv-sheeva.git] / drivers / tty / hvc / virtio_console.c

diff --git a/drivers/tty/hvc/virtio_console.c b/drivers/tty/hvc/virtio_console.c
index 896a2ced1d27952d9288a48911ee406ccabe1ee7..ad2520b1e03f418a1443db7581b04e0b936a989d 100644 (file)
--- 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";
                }