From c75b81bffa0a9493a24ae61d0c52f85e4043c183 Mon Sep 17 00:00:00 2001
From: Nicolas Palix <npalix@diku.dk>
Date: Tue, 24 Aug 2010 17:38:55 +0200
Subject: [PATCH] Coccinelle: Add null/eno.cocci

The various basic memory allocation functions don't return ERR_PTR

Signed-off-by: Nicolas Palix <npalix@diku.dk>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Michal Marek <mmarek@suse.cz>
---
 scripts/coccinelle/null/eno.cocci | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 scripts/coccinelle/null/eno.cocci

diff --git a/scripts/coccinelle/null/eno.cocci b/scripts/coccinelle/null/eno.cocci
new file mode 100644
index 0000000000000..4c9c52b9c4133
--- /dev/null
+++ b/scripts/coccinelle/null/eno.cocci
@@ -0,0 +1,20 @@
+/// The various basic memory allocation functions don't return ERR_PTR
+///
+// Confidence: High
+// Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
+// Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.
+// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
+// URL: http://coccinelle.lip6.fr/
+// Comments:
+// Options: -no_includes -include_headers
+
+virtual patch
+
+@@
+expression x,E;
+@@
+
+x = \(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...)
+... when != x = E
+- IS_ERR(x)
++ !x
-- 
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