From: Amit Shah <amit.shah@redhat.com>
Date: Tue, 27 Apr 2010 12:34:04 +0000 (+0530)
Subject: virtio-serial: Send out guest data to ports only if port is opened
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3ecb45f893d09a97b8f24399b5e40808a708261f;p=qemu.git

virtio-serial: Send out guest data to ports only if port is opened

Data should be written only when ports are open.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---

diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c
index 3a09f0d3c6..6befd4d139 100644
--- a/hw/virtio-serial-bus.c
+++ b/hw/virtio-serial-bus.c
@@ -335,6 +335,11 @@ static void handle_output(VirtIODevice *vdev, VirtQueue *vq)
             goto next_buf;
         }
 
+	if (!port->host_connected) {
+            ret = 0;
+            goto next_buf;
+        }
+
         /*
          * A port may not have any handler registered for consuming the
          * data that the guest sends or it may not have a chardev associated