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) | ||