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