10077 usr/src/uts/ Makefile changes for smatch

*** 20,32 ****
  #
  #
  # Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
! #       This makefile drives the production of the nvidia toe/ge
! #       driver.
! #
  
  #
  #       Path to the base of the uts directory tree (usually /usr/src/uts).
  #
  UTSBASE   = ../..
--- 20,30 ----
  #
  #
  # Copyright 2008 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   = ../..
*** 72,81 ****
--- 70,82 ----
  LINTTAGS        += -erroff=E_BAD_PTR_CAST_ALIGN
  
  CERRWARN        += -_gcc=-Wno-switch
  CERRWARN        += -_gcc=-Wno-uninitialized
  
+ # needs work
+ SMOFF += all_func_returns
+ 
  #
  #       Default build targets.
  #
  .KEEP_STATE: