diff options
Diffstat (limited to 'drivers/virtio/virtio_balloon.c')
| -rw-r--r-- | drivers/virtio/virtio_balloon.c | 48 |
1 files changed, 30 insertions, 18 deletions
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index 0a6425aadf9..3368cb6ef19 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -275,32 +275,21 @@ static int balloon(void *_vballoon) return 0; } -static int virtballoon_probe(struct virtio_device *vdev) +static int init_vqs(struct virtio_balloon *vb) { - struct virtio_balloon *vb; struct virtqueue *vqs[3]; vq_callback_t *callbacks[] = { balloon_ack, balloon_ack, stats_request }; const char *names[] = { "inflate", "deflate", "stats" }; int err, nvqs; - vdev->priv = vb = kmalloc(sizeof(*vb), GFP_KERNEL); - if (!vb) { - err = -ENOMEM; - goto out; - } - - INIT_LIST_HEAD(&vb->pages); - vb->num_pages = 0; - init_waitqueue_head(&vb->config_change); - vb->vdev = vdev; - vb->need_stats_update = 0; - - /* We expect two virtqueues: inflate and deflate, - * and optionally stat. */ + /* + * We expect two virtqueues: inflate and deflate, and + * optionally stat. + */ nvqs = virtio_has_feature(vb->vdev, VIRTIO_BALLOON_F_STATS_VQ) ? 3 : 2; - err = vdev->config->find_vqs(vdev, nvqs, vqs, callbacks, names); + err = vb->vdev->config->find_vqs(vb->vdev, nvqs, vqs, callbacks, names); if (err) - goto out_free_vb; + return err; vb->inflate_vq = vqs[0]; vb->deflate_vq = vqs[1]; @@ -318,6 +307,29 @@ static int virtballoon_probe(struct virtio_device *vdev) BUG(); virtqueue_kick(vb->stats_vq); } + return 0; +} + +static int virtballoon_probe(struct virtio_device *vdev) +{ + struct virtio_balloon *vb; + int err; + + vdev->priv = vb = kmalloc(sizeof(*vb), GFP_KERNEL); + if (!vb) { + err = -ENOMEM; + goto out; + } + + INIT_LIST_HEAD(&vb->pages); + vb->num_pages = 0; + init_waitqueue_head(&vb->config_change); + vb->vdev = vdev; + vb->need_stats_update = 0; + + err = init_vqs(vb); + if (err) + goto out_free_vb; vb->thread = kthread_run(balloon, vb, "vballoon"); if (IS_ERR(vb->thread)) { |