10077 usr/src/uts/ Makefile changes for smatch

*** 21,33 ****
  #
  # uts/intel/usba/Makefile
  # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
! #
! #       This makefile drives the production of the usba kernel module.
! #
  
  #
  #       Path to the base of the uts directory tree (usually /usr/src/uts).
  #
  UTSBASE = ../..
--- 21,31 ----
  #
  # uts/intel/usba/Makefile
  # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
! # Copyright (c) 2018, Joyent, Inc.
  
  #
  #       Path to the base of the uts directory tree (usually /usr/src/uts).
  #
  UTSBASE = ../..
*** 50,59 ****
--- 48,60 ----
  CERRWARN        += -_gcc=-Wno-switch
  CERRWARN        += -_gcc=-Wno-unused-label
  CERRWARN        += -_gcc=-Wno-unused-value
  CERRWARN        += -_gcc=-Wno-unused-variable
  
+ # needs work
+ SMOFF += all_func_returns,deref_check
+ 
  #
  #       Define targets
  #
  ALL_TARGET      = $(BINARY)
  LINT_TARGET     = $(MODULE).lint