From: Michael S. Tsirkin mst@redhat.com
[ Upstream commit 2055997f983c6db7b5c3940ce5f8f822657d5bc3 ]
We try to disable callbacks on c_ivq even without multiport even though that vq is not initialized in this configuration.
Fixes: c743d09dbd01 ("virtio: console: Disable callbacks for virtqueues at start of S4 freeze") Suggested-by: Mike Galbraith efault@gmx.de Signed-off-by: Michael S. Tsirkin mst@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/char/virtio_console.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index d7ee031d776d8..7de24040f39c1 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -2203,14 +2203,16 @@ static int virtcons_freeze(struct virtio_device *vdev)
vdev->config->reset(vdev);
- virtqueue_disable_cb(portdev->c_ivq); + if (use_multiport(portdev)) + virtqueue_disable_cb(portdev->c_ivq); cancel_work_sync(&portdev->control_work); cancel_work_sync(&portdev->config_work); /* * Once more: if control_work_handler() was running, it would * enable the cb as the last step. */ - virtqueue_disable_cb(portdev->c_ivq); + if (use_multiport(portdev)) + virtqueue_disable_cb(portdev->c_ivq); remove_controlq_data(portdev);
list_for_each_entry(port, &portdev->ports, list) {