virtio spec requires drivers to set DRIVER_OK before using VQs. This is set automatically after resume returns, virtio console violated this rule by adding inbufs, which causes the VQ to be used directly within restore. To fix, call virtio_device_ready before using VQs. Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx> --- drivers/char/virtio_console.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index 6ebe8f6..2ae843f 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -2184,6 +2184,8 @@ static int virtcons_restore(struct virtio_device *vdev) if (ret) return ret; + virtio_device_ready(portdev->vdev); + if (use_multiport(portdev)) fill_queue(portdev->c_ivq, &portdev->c_ivq_lock); -- MST -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
