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authorKim Kibum <kb0929.kim@samsung.com>2012-04-29 16:59:19 +0900
committerKim Kibum <kb0929.kim@samsung.com>2012-04-29 16:59:19 +0900
commitc1775d1a93a77a57380a4ce87ac3a8f807c944b2 (patch)
treee1f233f2af38ee247a677082198dd3a69a12a5a1 /scripts/coccinelle/alloc/drop_kmalloc_cast.cocci
parent2c2dcd5ffef2e97176e6a55e45512177e55e6fb9 (diff)
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Diffstat (limited to 'scripts/coccinelle/alloc/drop_kmalloc_cast.cocci')
-rw-r--r--scripts/coccinelle/alloc/drop_kmalloc_cast.cocci67
1 files changed, 67 insertions, 0 deletions
diff --git a/scripts/coccinelle/alloc/drop_kmalloc_cast.cocci b/scripts/coccinelle/alloc/drop_kmalloc_cast.cocci
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+++ b/scripts/coccinelle/alloc/drop_kmalloc_cast.cocci
@@ -0,0 +1,67 @@
+///
+/// Casting (void *) value returned by kmalloc is useless
+/// as mentioned in Documentation/CodingStyle, Chap 14.
+///
+// Confidence: High
+// Copyright: 2009,2010 Nicolas Palix, DIKU. GPLv2.
+// URL: http://coccinelle.lip6.fr/
+// Options: -no_includes -include_headers
+//
+// Keywords: kmalloc, kzalloc, kcalloc
+// Version min: < 2.6.12 kmalloc
+// Version min: < 2.6.12 kcalloc
+// Version min: 2.6.14 kzalloc
+//
+
+virtual context
+virtual patch
+virtual org
+virtual report
+
+//----------------------------------------------------------
+// For context mode
+//----------------------------------------------------------
+
+@depends on context@
+type T;
+@@
+
+* (T *)
+ \(kmalloc\|kzalloc\|kcalloc\)(...)
+
+//----------------------------------------------------------
+// For patch mode
+//----------------------------------------------------------
+
+@depends on patch@
+type T;
+@@
+
+- (T *)
+ \(kmalloc\|kzalloc\|kcalloc\)(...)
+
+//----------------------------------------------------------
+// For org and report mode
+//----------------------------------------------------------
+
+@r depends on org || report@
+type T;
+position p;
+@@
+
+ (T@p *)\(kmalloc\|kzalloc\|kcalloc\)(...)
+
+@script:python depends on org@
+p << r.p;
+t << r.T;
+@@
+
+coccilib.org.print_safe_todo(p[0], t)
+
+@script:python depends on report@
+p << r.p;
+t << r.T;
+@@
+
+msg="WARNING: casting value returned by k[cmz]alloc to (%s *) is useless." % (t)
+coccilib.report.print_report(p[0], msg)