Index: abi/include/abi/ipc/interfaces.h
===================================================================
--- abi/include/abi/ipc/interfaces.h	(revision c8cf261a450bf22fa6cc6e9872a1f07f9e7dccda)
+++ abi/include/abi/ipc/interfaces.h	(revision e422ff67bc3bc55a2253d0ddb4c3e0ac0c052b65)
@@ -190,4 +190,6 @@
 	INTERFACE_DISPLAY =
 	    FOURCC_COMPACT('d', 's', 'p', 'l') | IFACE_EXCHANGE_SERIALIZE,
+	INTERFACE_DISPLAY_CB =
+	    FOURCC_COMPACT('d', 's', 'p', 'l') | IFACE_EXCHANGE_SERIALIZE | IFACE_MOD_CALLBACK,
 	INTERFACE_GC =
 	    FOURCC_COMPACT('g', 'f', 'x', 'c') | IFACE_EXCHANGE_SERIALIZE,