From 5ce59ae0bcc0f0ad249d21560c9bb5f6061e62a8 Mon Sep 17 00:00:00 2001
From: Joe Perches <joe@perches.com>
Date: Thu, 21 Feb 2013 16:44:18 -0800
Subject: checkpatch: Add check for kcalloc argument order

kcalloc is sometimes misused with the first and second arguments switched.

Same issue with kmalloc_array too.

Bleat if sizeof is the first argument

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 scripts/checkpatch.pl | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 2c50eb4c4e66..7b40a3f729a7 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3476,6 +3476,12 @@ sub process {
 			     "unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html\n" . $herecurr);
 		}
 
+# check for alloc argument mismatch
+		if ($line =~ /\b(kcalloc|kmalloc_array)\s*\(\s*sizeof\b/) {
+			WARN("ALLOC_ARRAY_ARGS",
+			     "$1 uses number as first arg, sizeof is generally wrong\n" . $herecurr);
+		}
+
 # check for multiple semicolons
 		if ($line =~ /;\s*;\s*$/) {
 			WARN("ONE_SEMICOLON",
-- 
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