check_mod_timer.c

   1 /*
   2  * smatch/check_mod_timer.c
   3  *
   4  * Copyright (C) 2010 Dan Carpenter.
   5  *
   6  * Licensed under the Open Software License version 1.1
   7  *
   8  */
   9
  10 #include "smatch.h"
  11 #include "smatch_slist.h"
  12
  13 static int my_id;
  14
  15 static void match_mod_timer(const char *fn, struct expression *expr, void *param)
  16 {
  17         struct expression *arg;
  18         sval_t sval;
  19
  20         arg = get_argument_from_call_expr(expr->args, 1);
  21         if (!get_value_sval(arg, &sval) || sval.value == 0)
  22                 return;
  23         sm_msg("warn: mod_timer() takes an absolute time not an offset.");
  24 }
  25
  26 void check_mod_timer(int id)
  27 {
  28         if (option_project != PROJ_KERNEL)
  29                 return;
  30
  31         my_id = id;
  32         add_function_hook("mod_timer", &match_mod_timer, NULL);
  33 }