From e7549b926dd3ceec048f5689df90d4ec970c9419 Mon Sep 17 00:00:00 2001
From: Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de>
Date: Fri, 23 Oct 2015 13:30:20 +0200
Subject: more driver stuff from 3.2.72

---
 drivers/virtio/virtio_ring.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'drivers/virtio/virtio_ring.c')

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index a0aecab..4a88ac3 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -21,6 +21,7 @@
 #include <linux/virtio_config.h>
 #include <linux/device.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 
 /* virtio guest is communicating with a virtual "device" that actually runs on
  * a host processor.  Memory barriers are used to control SMP effects. */
@@ -579,4 +580,14 @@ void vring_transport_features(struct virtio_device *vdev)
 }
 EXPORT_SYMBOL_GPL(vring_transport_features);
 
+/* return the size of the vring within the virtqueue */
+unsigned int virtqueue_get_vring_size(struct virtqueue *_vq)
+{
+
+	struct vring_virtqueue *vq = to_vvq(_vq);
+
+	return vq->vring.num;
+}
+EXPORT_SYMBOL_GPL(virtqueue_get_vring_size);
+
 MODULE_LICENSE("GPL");
-- 
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