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authorAmit Shah <amit.shah@redhat.com>2010-03-19 17:36:44 +0530
committerMichael S. Tsirkin <mst@redhat.com>2010-03-22 14:24:55 +0200
commit2de16a493cc6153f7fa0b9da12a3862d063e3425 (patch)
treef649e694f63a6456d7572ec0afc21250c157a3f7 /drivers/char
parentec64213c4d482ee4d15b34511441eaecdd002adf (diff)
downloadblackbird-op-linux-2de16a493cc6153f7fa0b9da12a3862d063e3425.tar.gz
blackbird-op-linux-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')
-rw-r--r--drivers/char/virtio_console.c4
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,
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