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Date:	Sun, 12 Oct 2014 14:48:01 +0300
From:	"Michael S. Tsirkin" <>
Cc:	Rusty Russell <>,,,,,,, Amit Shah <>,
	Cornelia Huck <>,
	Christian Borntraeger <>,
	"David S. Miller" <>,
	Paolo Bonzini <>,
	"James E.J. Bottomley" <>
Subject: [PATCH v3 18/25] 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_enable_vqs_early before using event queue.

Signed-off-by: Michael S. Tsirkin <>
 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_enable_vqs_early(vdev);
 	if (virtio_has_feature(vdev, VIRTIO_SCSI_F_HOTPLUG))

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