10077 usr/src/uts/ Makefile changes for smatch

@@ -20,10 +20,11 @@
 #
 #
 # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 # Use is subject to license terms.
 #
+# Copyright (c) 2018, Joyent, Inc.
 
 #
 # This makefile drives the production of the atu driver kernel module.
 #
 # i86pc architecture dependent

@@ -59,10 +60,13 @@
 #
 LDFLAGS         += -dy -Nmisc/mac -Nmisc/net80211 -Nmisc/usba
 
 CERRWARN        += -_gcc=-Wno-switch
 
+# needs work
+$(OBJS_DIR)/atu.o := SMOFF += all_func_returns
+
 #
 #       Default build targets.
 #
 .KEEP_STATE: