virtio: Decrement avail idx on buffer detach

[linux-2.6.git] / drivers / virtio / virtio_ring.c

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index cc2f73e03475b620053765b373c8b1a39fc08762..b0043fb26a4d5dd8fcc9a2b7b66a18b3b44053b0 100644 (file)
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -371,6 +371,7 @@ void *virtqueue_detach_unused_buf(struct virtqueue *_vq)
                /* detach_buf clears data, so grab it now. */
                buf = vq->data[i];
                detach_buf(vq, i);
+               vq->vring.avail->idx--;
                END_USE(vq);
                return buf;
        }