From 966b418671cb27340de8a0c1d2524319156f9539 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Wed, 15 Oct 2014 10:22:33 +1030 Subject: [PATCH] virtio_balloon: enable VQs early on restore virtio spec requires drivers to set DRIVER_OK before using VQs. This is set automatically after resume returns, virtio balloon violated this rule by adding bufs, which causes the VQ to be used directly within restore. To fix, call virtio_device_ready before using VQ. Signed-off-by: Michael S. Tsirkin Signed-off-by: Rusty Russell --- drivers/virtio/virtio_balloon.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 25ebe8eecdb73..f4a28af4865ef 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -538,6 +538,8 @@ static int virtballoon_restore(struct virtio_device *vdev) if (ret) return ret; + virtio_device_ready(vdev); + fill_balloon(vb, towards_target(vb)); update_balloon_size(vb); return 0; -- 2.39.5