1// SPDX-License-Identifier: GPL-2.0-only
2/// Make sure pm_runtime_* calls does not use unnecessary IS_ERR_VALUE
3///
4// Keywords: pm_runtime
5// Confidence: Medium
6// Copyright (C) 2013 Texas Instruments Incorporated -
7// URL: https://coccinelle.gitlabpages.inria.fr/website
8// Options: --include-headers
9
10virtual patch
11virtual context
12virtual org
13virtual report
14
15//----------------------------------------------------------
16//  Detection
17//----------------------------------------------------------
18
19@runtime_bad_err_handle exists@
20expression ret;
21position p;
22@@
23(
24ret@p = \(pm_runtime_idle\|
25	pm_runtime_suspend\|
26	pm_runtime_autosuspend\|
27	pm_runtime_resume\|
28	pm_request_idle\|
29	pm_request_resume\|
30	pm_request_autosuspend\|
31	pm_runtime_get\|
32	pm_runtime_get_sync\|
33	pm_runtime_put\|
34	pm_runtime_put_autosuspend\|
35	pm_runtime_put_sync\|
36	pm_runtime_put_sync_suspend\|
37	pm_runtime_put_sync_autosuspend\|
38	pm_runtime_set_active\|
39	pm_schedule_suspend\|
40	pm_runtime_barrier\|
41	pm_generic_runtime_suspend\|
42	pm_generic_runtime_resume\)(...);
43...
44IS_ERR_VALUE(ret)
45...
46)
47
48//----------------------------------------------------------
49//  For context mode
50//----------------------------------------------------------
51
52@depends on context@
53identifier pm_runtime_api;
54expression ret;
55position runtime_bad_err_handle.p;
56@@
57(
58ret@p = pm_runtime_api(...);
59...
60* IS_ERR_VALUE(ret)
61...
62)
63
64//----------------------------------------------------------
65//  For patch mode
66//----------------------------------------------------------
67
68@depends on patch@
69identifier pm_runtime_api;
70expression ret;
71position runtime_bad_err_handle.p;
72@@
73(
74ret@p = pm_runtime_api(...);
75...
76- IS_ERR_VALUE(ret)
77+ ret < 0
78...
79)
80
81//----------------------------------------------------------
82//  For org and report mode
83//----------------------------------------------------------
84
85@r depends on (org || report) exists@
86position p1, p2;
87identifier pm_runtime_api;
88expression ret;
89position runtime_bad_err_handle.p;
90@@
91(
92ret@p = pm_runtime_api@p1(...);
93...
94IS_ERR_VALUE@p2(ret)
95...
96)
97
98@script:python depends on org@
99p1 << r.p1;
100p2 << r.p2;
101pm_runtime_api << r.pm_runtime_api;
102@@
103
104cocci.print_main(pm_runtime_api,p1)
105cocci.print_secs("IS_ERR_VALUE",p2)
106
107@script:python depends on report@
108p1 << r.p1;
109p2 << r.p2;
110pm_runtime_api << r.pm_runtime_api;
111@@
112
113msg = "%s returns < 0 as error. Unecessary IS_ERR_VALUE at line %s" % (pm_runtime_api, p2[0].line)
114coccilib.report.print_report(p1[0],msg)
115