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virtio: tools: make it clear that virtqueue_add_buf() no longer retur…

…ns > 0

We simplified virtqueue_add_buf(), make it clear in the callers.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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1 parent 4614e51 commit de929b04450f2ec984c2febb1249d0e0f993d0a2 @rustyrussell rustyrussell committed Oct 16, 2012
Showing with 2 additions and 2 deletions.
  1. +2 −2 tools/virtio/virtio_test.c
@@ -164,7 +164,7 @@ static void run_test(struct vdev_info *dev, struct vq_info *vq,
r = virtqueue_add_buf(vq->vq, &sl, 1, 0,
dev->buf + started,
GFP_ATOMIC);
- if (likely(r >= 0)) {
+ if (likely(r == 0)) {
++started;
virtqueue_kick(vq->vq);
}
@@ -177,7 +177,7 @@ static void run_test(struct vdev_info *dev, struct vq_info *vq,
r = 0;
}
- } while (r >= 0);
+ } while (r == 0);
if (completed == completed_before)
++spurious;
assert(completed <= bufs);

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