Add a Coccinelle file to use the ERR_CAST function Before the release 2.6.25, one had to use ERR_PTR(PTR_ERR(...)) to convert the pointer type of an error. Since then, the function ERR_CAST has been available for that purpose.
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| 1 | +/// | |
| 2 | +/// Use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...)) | |
| 3 | +/// | |
| 4 | +// Confidence: High | |
| 5 | +// Copyright: (C) 2009, 2010 Nicolas Palix, DIKU. GPLv2. | |
| 6 | +// Copyright: (C) 2009, 2010 Julia Lawall, DIKU. GPLv2. | |
| 7 | +// Copyright: (C) 2009, 2010 Gilles Muller, INRIA/LiP6. GPLv2. | |
| 8 | +// URL: http://coccinelle.lip6.fr/ | |
| 9 | +// Options: | |
| 10 | +// | |
| 11 | +// Keywords: ERR_PTR, PTR_ERR, ERR_CAST | |
| 12 | +// Version min: 2.6.25 | |
| 13 | +// | |
| 14 | + | |
| 15 | +virtual context | |
| 16 | +virtual patch | |
| 17 | +virtual org | |
| 18 | +virtual report | |
| 19 | + | |
| 20 | + | |
| 21 | +@ depends on context && !patch && !org && !report@ | |
| 22 | +expression x; | |
| 23 | +@@ | |
| 24 | + | |
| 25 | +* ERR_PTR(PTR_ERR(x)) | |
| 26 | + | |
| 27 | +@ depends on !context && patch && !org && !report @ | |
| 28 | +expression x; | |
| 29 | +@@ | |
| 30 | + | |
| 31 | +- ERR_PTR(PTR_ERR(x)) | |
| 32 | ++ ERR_CAST(x) | |
| 33 | + | |
| 34 | +@r depends on !context && !patch && (org || report)@ | |
| 35 | +expression x; | |
| 36 | +position p; | |
| 37 | +@@ | |
| 38 | + | |
| 39 | + ERR_PTR@p(PTR_ERR(x)) | |
| 40 | + | |
| 41 | +@script:python depends on org@ | |
| 42 | +p << r.p; | |
| 43 | +x << r.x; | |
| 44 | +@@ | |
| 45 | + | |
| 46 | +msg="WARNING ERR_CAST can be used with %s" % (x) | |
| 47 | +msg_safe=msg.replace("[","@(").replace("]",")") | |
| 48 | +coccilib.org.print_todo(p[0], msg_safe) | |
| 49 | + | |
| 50 | +@script:python depends on report@ | |
| 51 | +p << r.p; | |
| 52 | +x << r.x; | |
| 53 | +@@ | |
| 54 | + | |
| 55 | +msg="WARNING: ERR_CAST can be used with %s" % (x) | |
| 56 | +coccilib.report.print_report(p[0], msg) | |