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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-05 14:20:14 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-05 14:20:14 -0700
commitf43100ae39bfeb757b75835ef61f0c2c46c99348 (patch)
tree620379bb9a2287975ee222c449cd69d31738096e /scripts/coccinelle/err_cast.cocci
parent27b4a1a9eac8b0f8958da67e4abe025b96e1a293 (diff)
parent5e8e1cc0a1c36c8ff156ac1f04a16422bd4ed3ac (diff)
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Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: scripts/dtc: Fix a resource leak Documentation: fix ubuntu distro name MAINTAINERS: Update kbuild git URLs Add support for the C variable in the coccicheck script Add scripts/coccinelle/deref_null.cocci Add scripts/coccinelle/err_cast.cocci Add scripts/coccinelle/resource_size.cocci Add scripts/coccinelle/alloc/kzalloc-simple.cocci Add scripts/coccinelle/alloc/drop_kmalloc_cast.cocci Add Documentation/coccinelle.txt Add a target to use the Coccinelle checker scripts: decodecode: remove bashisms Makefile: clarify a comment checkkconfigsymbols.sh: Kconfig symbols sometimes have lowercase letters scripts: add nconf into gitignore file
Diffstat (limited to 'scripts/coccinelle/err_cast.cocci')
-rw-r--r--scripts/coccinelle/err_cast.cocci56
1 files changed, 56 insertions, 0 deletions
diff --git a/scripts/coccinelle/err_cast.cocci b/scripts/coccinelle/err_cast.cocci
new file mode 100644
index 00000000000..2ce115000af
--- /dev/null
+++ b/scripts/coccinelle/err_cast.cocci
@@ -0,0 +1,56 @@
+///
+/// Use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...))
+///
+// Confidence: High
+// Copyright: (C) 2009, 2010 Nicolas Palix, DIKU. GPLv2.
+// Copyright: (C) 2009, 2010 Julia Lawall, DIKU. GPLv2.
+// Copyright: (C) 2009, 2010 Gilles Muller, INRIA/LiP6. GPLv2.
+// URL: http://coccinelle.lip6.fr/
+// Options:
+//
+// Keywords: ERR_PTR, PTR_ERR, ERR_CAST
+// Version min: 2.6.25
+//
+
+virtual context
+virtual patch
+virtual org
+virtual report
+
+
+@ depends on context && !patch && !org && !report@
+expression x;
+@@
+
+* ERR_PTR(PTR_ERR(x))
+
+@ depends on !context && patch && !org && !report @
+expression x;
+@@
+
+- ERR_PTR(PTR_ERR(x))
++ ERR_CAST(x)
+
+@r depends on !context && !patch && (org || report)@
+expression x;
+position p;
+@@
+
+ ERR_PTR@p(PTR_ERR(x))
+
+@script:python depends on org@
+p << r.p;
+x << r.x;
+@@
+
+msg="WARNING ERR_CAST can be used with %s" % (x)
+msg_safe=msg.replace("[","@(").replace("]",")")
+coccilib.org.print_todo(p[0], msg_safe)
+
+@script:python depends on report@
+p << r.p;
+x << r.x;
+@@
+
+msg="WARNING: ERR_CAST can be used with %s" % (x)
+coccilib.report.print_report(p[0], msg)