1 /*
2  * Copyright (C) 2011 Oracle.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt
16  */
17 
18 #include "smatch.h"
19 
20 static int my_id;
21 
match_irqrestore(const char * fn,struct expression * expr,void * data)22 static void match_irqrestore(const char *fn, struct expression *expr, void *data)
23 {
24 	struct expression *arg_expr;
25 	sval_t tmp;
26 
27 	arg_expr = get_argument_from_call_expr(expr->args, 1);
28 	if (!get_implied_value(arg_expr, &tmp))
29 		return;
30 	sm_error("calling '%s()' with bogus flags", fn);
31 }
32 
check_bogus_irqrestore(int id)33 void check_bogus_irqrestore(int id)
34 {
35 	if (option_project != PROJ_KERNEL)
36 		return;
37 
38 	my_id = id;
39 	add_function_hook("spin_unlock_irqrestore", &match_irqrestore, NULL);
40 }
41