void visorbus_disable_channel_interrupts(struct visor_device *dev);
 #endif
 
-/* Note that for visorchannel_create() and visorchannel_create_overlapped(),
+/* Note that for visorchannel_create()
  * <channel_bytes> and <guid> arguments may be 0 if we are a channel CLIENT.
  * In this case, the values can simply be read from the channel header.
  */
 struct visorchannel *visorchannel_create(HOSTADDRESS physaddr,
                                         ulong channel_bytes, uuid_le guid);
-struct visorchannel *visorchannel_create_overlapped(ulong channel_bytes,
-                                                   struct visorchannel *parent,
-                                                   ulong off, uuid_le guid);
 struct visorchannel *visorchannel_create_with_lock(HOSTADDRESS physaddr,
                                                   ulong channel_bytes,
                                                   uuid_le guid);
-struct visorchannel *visorchannel_create_overlapped_with_lock(
-                               ulong channel_bytes,
-                               struct visorchannel *parent,
-                               ulong off, uuid_le guid);
 void visorchannel_destroy(struct visorchannel *channel);
 int visorchannel_read(struct visorchannel *channel, ulong offset,
                      void *local, ulong nbytes);
 
 }
 EXPORT_SYMBOL_GPL(visorchannel_create_with_lock);
 
-struct visorchannel *
-visorchannel_create_overlapped(ulong channel_bytes,
-                              struct visorchannel *parent, ulong off,
-                              uuid_le guid)
-{
-       return visorchannel_create_guts(0, channel_bytes, parent, off, guid,
-                                       FALSE);
-}
-EXPORT_SYMBOL_GPL(visorchannel_create_overlapped);
-
-struct visorchannel *
-visorchannel_create_overlapped_with_lock(ulong channel_bytes,
-                                        struct visorchannel *parent, ulong off,
-                                        uuid_le guid)
-{
-       return visorchannel_create_guts(0, channel_bytes, parent, off, guid,
-                                       TRUE);
-}
-EXPORT_SYMBOL_GPL(visorchannel_create_overlapped_with_lock);
-
 void
 visorchannel_destroy(struct visorchannel *channel)
 {