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1// SPDX-License-Identifier: GPL-2.0-only
2///
3/// Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR
4///
5// Confidence: High
6// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6.
7// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6.
8// URL: http://coccinelle.lip6.fr/
9// Options: --no-includes --include-headers
10//
11// Keywords: ERR_PTR, PTR_ERR, PTR_ERR_OR_ZERO
12// Version min: 2.6.39
13//
14
15virtual context
16virtual patch
17virtual org
18virtual report
19
20@depends on patch@
21expression ptr;
22@@
23
24- if (IS_ERR(ptr)) return PTR_ERR(ptr); else return 0;
25+ return PTR_ERR_OR_ZERO(ptr);
26
27@depends on patch@
28expression ptr;
29@@
30
31- if (IS_ERR(ptr)) return PTR_ERR(ptr); return 0;
32+ return PTR_ERR_OR_ZERO(ptr);
33
34@depends on patch@
35expression ptr;
36@@
37
38- (IS_ERR(ptr) ? PTR_ERR(ptr) : 0)
39+ PTR_ERR_OR_ZERO(ptr)
40
41@r1 depends on !patch@
42expression ptr;
43position p1;
44@@
45
46* if@p1 (IS_ERR(ptr)) return PTR_ERR(ptr); else return 0;
47
48@r2 depends on !patch@
49expression ptr;
50position p2;
51@@
52
53* if@p2 (IS_ERR(ptr)) return PTR_ERR(ptr); return 0;
54
55@r3 depends on !patch@
56expression ptr;
57position p3;
58@@
59
60* IS_ERR@p3(ptr) ? PTR_ERR(ptr) : 0
61
62@script:python depends on org@
63p << r1.p1;
64@@
65
66coccilib.org.print_todo(p[0], "WARNING: PTR_ERR_OR_ZERO can be used")
67
68
69@script:python depends on org@
70p << r2.p2;
71@@
72
73coccilib.org.print_todo(p[0], "WARNING: PTR_ERR_OR_ZERO can be used")
74
75@script:python depends on org@
76p << r3.p3;
77@@
78
79coccilib.org.print_todo(p[0], "WARNING: PTR_ERR_OR_ZERO can be used")
80
81@script:python depends on report@
82p << r1.p1;
83@@
84
85coccilib.report.print_report(p[0], "WARNING: PTR_ERR_OR_ZERO can be used")
86
87@script:python depends on report@
88p << r2.p2;
89@@
90
91coccilib.report.print_report(p[0], "WARNING: PTR_ERR_OR_ZERO can be used")
92
93@script:python depends on report@
94p << r3.p3;
95@@
96
97coccilib.report.print_report(p[0], "WARNING: PTR_ERR_OR_ZERO can be used")
98