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virtio: console: Check if port is valid in resize_console

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The console port could have been hot-unplugged. Check if it is valid
before working on it.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Amit Shah 2010-03-19 17:36:44 +05:30 committed by Michael S. Tsirkin
parent ec64213c4d
commit 2de16a493c
1 changed files with 4 additions and 0 deletions
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4
drivers/char/virtio_console.c
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@ -681,6 +681,10 @@ static void resize_console(struct port *port)
struct virtio_device *vdev;
struct winsize ws;
/* The port could have been hot-unplugged */
if (!port)
return;
vdev = port->portdev->vdev;
if (virtio_has_feature(vdev, VIRTIO_CONSOLE_F_SIZE)) {
vdev->config->get(vdev,