[PATCH v4 18/25] virtio_scsi: enable VQs early on restore

From: Michael S. Tsirkin
Date: Mon Oct 13 2014 - 03:48:10 EST

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@xxxxxxxxxx>
drivers/scsi/virtio_scsi.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index 0642ce3..2b565b3 100644
--- a/drivers/scsi/virtio_scsi.c
+++ b/drivers/scsi/virtio_scsi.c
@@ -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))


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