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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>
This commit is contained in:
Joe Perches 2013-02-21 16:44:18 -08:00 committed by Linus Torvalds
parent e8eb3997ce
commit 5ce59ae0bc
1 changed files with 6 additions and 0 deletions
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6
scripts/checkpatch.pl
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@ -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",