69 lines
1.3 KiB
Plaintext
69 lines
1.3 KiB
Plaintext
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// SPDX-License-Identifier: GPL-2.0-only
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/// Find missing iounmaps.
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///
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//# This only signals a missing iounmap when there is an iounmap later
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//# in the same function.
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//# False positives can be due to loops.
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//
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// Confidence: Moderate
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// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6.
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// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6.
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// URL: http://coccinelle.lip6.fr/
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// Comments:
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// Options:
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virtual context
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virtual org
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virtual report
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@iom@
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expression e;
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statement S,S1;
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int ret;
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position p1,p2,p3;
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@@
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e = \(ioremap@p1\)(...)
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... when != iounmap(e)
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if (<+...e...+>) S
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... when any
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when != iounmap(e)
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when != if (...) { ... iounmap(e); ... }
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(
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if (ret == 0) S1
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if (...)
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{ ...
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return 0; }
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if (...)
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{ ...
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return <+...e...+>; }
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*if@p2 (...)
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{ ... when != iounmap(e)
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when forall
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return@p3 ...; }
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)
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... when any
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iounmap(e);
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@script:python depends on org@
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p1 << iom.p1;
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p2 << iom.p2;
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p3 << iom.p3;
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@@
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cocci.print_main("ioremap",p1)
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cocci.print_secs("if",p2)
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cocci.print_secs("needed iounmap",p3)
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@script:python depends on report@
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p1 << iom.p1;
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p2 << iom.p2;
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p3 << iom.p3;
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@@
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msg = "ERROR: missing iounmap; ioremap on line %s and execution via conditional on line %s" % (p1[0].line,p2[0].line)
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coccilib.report.print_report(p3[0],msg)
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