diff --git a/net/openvswitch/vport.h b/net/openvswitch/vport.h
index d7e50a1..3e12940 100644
--- a/net/openvswitch/vport.h
+++ b/net/openvswitch/vport.h
@@ -185,9 +185,9 @@
  * the result of a hash table lookup.  @priv must point to the start of the
  * private data area.
  */
-static inline struct vport *vport_from_priv(const void *priv)
+static inline struct vport *vport_from_priv(void *priv)
 {
-	return (struct vport *)(priv - ALIGN(sizeof(struct vport), VPORT_ALIGN));
+	return (struct vport *)((u8 *)priv - ALIGN(sizeof(struct vport), VPORT_ALIGN));
 }
 
 void ovs_vport_receive(struct vport *, struct sk_buff *,