1/// Use WARN(1,...) rather than printk followed by WARN_ON(1)
2///
3// Confidence: High
4// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6.  GPLv2.
5// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6.  GPLv2.
6// URL: http://coccinelle.lip6.fr/
7// Comments:
8// Options: --no-includes --include-headers
9
10virtual patch
11virtual context
12virtual org
13virtual report
14
15@bad1@
16position p;
17@@
18
19printk(...);
20printk@p(...);
21WARN_ON(1);
22
23@r1 depends on context || report || org@
24position p != bad1.p;
25@@
26
27 printk@p(...);
28*WARN_ON(1);
29
30@script:python depends on org@
31p << r1.p;
32@@
33
34cocci.print_main("printk + WARN_ON can be just WARN",p)
35
36@script:python depends on report@
37p << r1.p;
38@@
39
40msg = "SUGGESTION: printk + WARN_ON can be just WARN"
41coccilib.report.print_report(p[0],msg)
42
43@ok1 depends on patch@
44expression list es;
45position p != bad1.p;
46@@
47
48-printk@p(
49+WARN(1,
50  es);
51-WARN_ON(1);
52
53@depends on patch@
54expression list ok1.es;
55@@
56
57if (...)
58- {
59  WARN(1,es);
60- }
61
62// --------------------------------------------------------------------
63
64@bad2@
65position p;
66@@
67
68printk(...);
69printk@p(...);
70WARN_ON_ONCE(1);
71
72@r2 depends on context || report || org@
73position p != bad1.p;
74@@
75
76 printk@p(...);
77*WARN_ON_ONCE(1);
78
79@script:python depends on org@
80p << r2.p;
81@@
82
83cocci.print_main("printk + WARN_ON_ONCE can be just WARN_ONCE",p)
84
85@script:python depends on report@
86p << r2.p;
87@@
88
89msg = "SUGGESTION: printk + WARN_ON_ONCE can be just WARN_ONCE"
90coccilib.report.print_report(p[0],msg)
91
92@ok2 depends on patch@
93expression list es;
94position p != bad2.p;
95@@
96
97-printk@p(
98+WARN_ONCE(1,
99  es);
100-WARN_ON_ONCE(1);
101
102@depends on patch@
103expression list ok2.es;
104@@
105
106if (...)
107- {
108  WARN_ONCE(1,es);
109- }
110