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| author | Amit Shah <amit.shah@redhat.com> | 2010-03-19 17:36:44 +0530 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2010-03-22 14:24:55 +0200 |
| commit | 2de16a493cc6153f7fa0b9da12a3862d063e3425 (patch) | |
| tree | f649e694f63a6456d7572ec0afc21250c157a3f7 /drivers/char/virtio_console.c | |
| parent | ec64213c4d482ee4d15b34511441eaecdd002adf (diff) | |
| download | linux-stable-2de16a493cc6153f7fa0b9da12a3862d063e3425.tar.gz linux-stable-2de16a493cc6153f7fa0b9da12a3862d063e3425.tar.bz2 linux-stable-2de16a493cc6153f7fa0b9da12a3862d063e3425.zip | |
virtio: console: Check if port is valid in resize_console
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>
Diffstat (limited to 'drivers/char/virtio_console.c')
| -rw-r--r-- | drivers/char/virtio_console.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index 67b474b4167c..44288ce0cb45 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -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, |