[PATCH 6/8] virtio_balloon: add request_vqs/free_vqs calls

["Michael S. Tsirkin" <mst@redhat.com>]

Add request_vqs/free_vqs calls to virtio_balloon.
These will be required for MSI support.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 drivers/virtio/virtio_balloon.c |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index 5926826..77eac2b 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -217,10 +217,14 @@ static int virtballoon_probe(struct virtio_device *vdev)
 	vb->vdev = vdev;
 
 	/* We expect two virtqueues. */
+	err = virtio_request_vqs(vdev, 2);
+	if (err)
+		goto out_free_vb;
+
 	vb->inflate_vq = vdev->config->find_vq(vdev, 0, balloon_ack);
 	if (IS_ERR(vb->inflate_vq)) {
 		err = PTR_ERR(vb->inflate_vq);
-		goto out_free_vb;
+		goto out_free_vqs;
 	}
 
 	vb->deflate_vq = vdev->config->find_vq(vdev, 1, balloon_ack);
@@ -244,6 +248,8 @@ out_del_deflate_vq:
 	vdev->config->del_vq(vb->deflate_vq);
 out_del_inflate_vq:
 	vdev->config->del_vq(vb->inflate_vq);
+out_free_vqs:
+	virtio_free_vqs(vdev);
 out_free_vb:
 	kfree(vb);
 out:
@@ -265,6 +271,7 @@ static void virtballoon_remove(struct virtio_device *vdev)
 
 	vdev->config->del_vq(vb->deflate_vq);
 	vdev->config->del_vq(vb->inflate_vq);
+	virtio_free_vqs(vdev);
 	kfree(vb);
 }
 
-- 
1.6.0.6