Line data Source code
1 : /*
2 : * Copyright (c) 2014-2016 ISPRAS (http://www.ispras.ru)
3 : * Institute for System Programming of the Russian Academy of Sciences
4 : *
5 : * Licensed under the Apache License, Version 2.0 (the "License");
6 : * you may not use this file except in compliance with the License.
7 : * You may obtain a copy of the License at
8 : *
9 : * http://www.apache.org/licenses/LICENSE-2.0
10 : *
11 : * Unless required by applicable law or agreed to in writing, software
12 : * distributed under the License is distributed on an "AS IS" BASIS,
13 : * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 : * ee the License for the specific language governing permissions and
15 : * limitations under the License.
16 : */
17 :
18 : #include <linux/device.h>
19 : #include <verifier/memory.h>
20 : #include <verifier/nondet.h>
21 :
22 : struct device_private {
23 : void *driver_data;
24 : };
25 :
26 : void *ldv_dev_get_drvdata(const struct device *dev)
27 : {
28 95 : if (dev && dev->p)
29 19 : return dev->p->driver_data;
30 19 : return 0;
31 : }
32 :
33 : /* Do not return any error codes since callers usually don't check them. This
34 : * is the case for, say, Linux 3.14 while in, say, Linux 4.7 there is no need
35 : * in this model at all (and it will not be invoked - see aspect) since
36 : * dev_set_drvdata() is static inline function that always returns
37 : * successfully.
38 : */
39 : int ldv_dev_set_drvdata(struct device *dev, void *data)
40 : {
41 0 : dev->p = ldv_xzalloc(sizeof(*dev->p));
42 0 : dev->p->driver_data = data;
43 0 : return 0;
44 : }
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