1/// Find missing iounmaps.
 2///
 3//# This only signals a missing iounmap when there is an iounmap later
 4//# in the same function.
 5//# False positives can be due to loops.
 6//
 7// Confidence: Moderate
 8// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6.  GPLv2.
 9// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6.  GPLv2.
10// URL: http://coccinelle.lip6.fr/
11// Comments:
12// Options:
13
14virtual context
15virtual org
16virtual report
17
18@iom@
19expression e;
20statement S,S1;
21int ret;
22position p1,p2,p3;
23@@
24
25e = \(ioremap@p1\|ioremap_nocache@p1\)(...)
26... when != iounmap(e)
27if (<+...e...+>) S
28... when any
29    when != iounmap(e)
30    when != if (...) { ... iounmap(e); ... }
31(
32 if (ret == 0) S1
33|
34if (...)
35   { ...
36     return 0; }
37|
38if (...)
39   { ...
40     return <+...e...+>; }
41|
42*if@p2 (...)
43   { ... when != iounmap(e)
44         when forall
45     return@p3 ...; }
46)
47... when any
48iounmap(e);
49
50@script:python depends on org@
51p1 << iom.p1;
52p2 << iom.p2;
53p3 << iom.p3;
54@@
55
56cocci.print_main("ioremap",p1)
57cocci.print_secs("if",p2)
58cocci.print_secs("needed iounmap",p3)
59
60@script:python depends on report@
61p1 << iom.p1;
62p2 << iom.p2;
63p3 << iom.p3;
64@@
65
66msg = "ERROR: missing iounmap; ioremap on line %s and execution via conditional on line %s" % (p1[0].line,p2[0].line)
67coccilib.report.print_report(p3[0],msg)

 1// SPDX-License-Identifier: GPL-2.0-only
 2/// Find missing iounmaps.
 3///
 4//# This only signals a missing iounmap when there is an iounmap later
 5//# in the same function.
 6//# False positives can be due to loops.
 7//
 8// Confidence: Moderate
 9// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6.
10// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6.
11// URL: https://coccinelle.gitlabpages.inria.fr/website
12// Comments:
13// Options:
14
15virtual context
16virtual org
17virtual report
18
19@iom@
20expression e;
21statement S,S1;
22int ret;
23position p1,p2,p3;
24@@
25
26e = \(ioremap@p1\)(...)
27... when != iounmap(e)
28if (<+...e...+>) S
29... when any
30    when != iounmap(e)
31    when != if (...) { ... iounmap(e); ... }
32(
33 if (ret == 0) S1
34|
35if (...)
36   { ...
37     return 0; }
38|
39if (...)
40   { ...
41     return <+...e...+>; }
42|
43*if@p2 (...)
44   { ... when != iounmap(e)
45         when forall
46     return@p3 ...; }
47)
48... when any
49iounmap(e);
50
51@script:python depends on org@
52p1 << iom.p1;
53p2 << iom.p2;
54p3 << iom.p3;
55@@
56
57cocci.print_main("ioremap",p1)
58cocci.print_secs("if",p2)
59cocci.print_secs("needed iounmap",p3)
60
61@script:python depends on report@
62p1 << iom.p1;
63p2 << iom.p2;
64p3 << iom.p3;
65@@
66
67msg = "ERROR: missing iounmap; ioremap on line %s and execution via conditional on line %s" % (p1[0].line,p2[0].line)
68coccilib.report.print_report(p3[0],msg)