tree fc9c8a484088dc9d8c4589e19ab1f8c2c235ef96
parent b9fd06d0dae38a88efa4b770dfa9db7dcbe3cda9
author Felipe Franciosi <felipe@nutanix.com> 1479132975 -0800
committer Michael S. Tsirkin <mst@redhat.com> 1481840018 +0200

virtio_ring: fix description of virtqueue_get_buf

The device (not the driver) populates the used ring and includes the len
of how much data was written.

Signed-off-by: Felipe Franciosi <felipe@nutanix.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>