/// Find missing iounmaps.
///
//# This only signals a missing iounmap when there is an iounmap later
//# in the same function.
//# False positives can be due to loops.
//
// Confidence: Moderate
// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6.  GPLv2.
// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6.  GPLv2.
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options:

virtual context
virtual org
virtual report

@iom@
expression e;
statement S,S1;
int ret;
position p1,p2,p3;
@@

e = \(ioremap@p1\|ioremap_nocache@p1\)(...)
... when != iounmap(e)
if (<+...e...+>) S
... when any
    when != iounmap(e)
    when != if (...) { ... iounmap(e); ... }
(
 if (ret == 0) S1
|
if (...)
   { ...
     return 0; }
|
if (...)
   { ...
     return <+...e...+>; }
|
*if@p2 (...)
   { ... when != iounmap(e)
         when forall
     return@p3 ...; }
)
... when any
iounmap(e);

@script:python depends on org@
p1 << iom.p1;
p2 << iom.p2;
p3 << iom.p3;
@@

cocci.print_main("ioremap",p1)
cocci.print_secs("if",p2)
cocci.print_secs("needed iounmap",p3)

@script:python depends on report@
p1 << iom.p1;
p2 << iom.p2;
p3 << iom.p3;
@@

msg = "ERROR: missing iounmap; ioremap on line %s and execution via conditional on line %s" % (p1[0].line,p2[0].line)
coccilib.report.print_report(p3[0],msg)
mp-back</option>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=635b8c8ecdd27142d7fdab0df334b2e9201481cf'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/include?id=635b8c8ecdd27142d7fdab0df334b2e9201481cf'>include</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/drm?id=635b8c8ecdd27142d7fdab0df334b2e9201481cf'>drm</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/drm/drm_fb_cma_helper.h?id=635b8c8ecdd27142d7fdab0df334b2e9201481cf'>drm_fb_cma_helper.h</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/include/drm/drm_fb_cma_helper.h?id=635b8c8ecdd27142d7fdab0df334b2e9201481cf&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>