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virtio_scsi: enable VQs early on restore 

virtio spec requires drivers to set DRIVER_OK before using VQs.
This is set automatically after restore returns, virtio scsi violated
this rule on restore by kicking event vq within restore.

To fix, call virtio_device_ready before using event queue.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Michael S. Tsirkin 2014-10-15 10:22:32 +10:30 committed by Rusty Russell
parent 6d62c37f19
commit 52c9cf1ac3
1 changed files with 2 additions and 0 deletions
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2
drivers/scsi/virtio_scsi.c
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@ -1054,6 +1054,8 @@ static int virtscsi_restore(struct virtio_device *vdev)
return err;
}
virtio_device_ready(vdev);
if (virtio_has_feature(vdev, VIRTIO_SCSI_F_HOTPLUG))
virtscsi_kick_event_all(vscsi);