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virtio_console: enable VQs early
virtio spec requires drivers to set DRIVER_OK before using VQs. This is set automatically after probe returns, virtio console violated this rule by adding inbufs, which causes the VQ to be used directly within probe. To fix, call virtio_device_ready before using VQs. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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@ -1449,6 +1449,8 @@ static int add_port(struct ports_device *portdev, u32 id)
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spin_lock_init(&port->outvq_lock);
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init_waitqueue_head(&port->waitqueue);
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virtio_device_ready(portdev->vdev);
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/* Fill the in_vq with buffers so the host can send us data. */
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nr_added_bufs = fill_queue(port->in_vq, &port->inbuf_lock);
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if (!nr_added_bufs) {
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