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| author | Joe Perches <joe@perches.com> | 2013-02-21 16:44:18 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-21 17:22:26 -0800 |
| commit | 5ce59ae0bcc0f0ad249d21560c9bb5f6061e62a8 (patch) | |
| tree | 1fa6ddc462a2425d6d8d50136330c2db0b6becee | |
| parent | e8eb3997ce2f5887472a674b32f295b0196ecf46 (diff) | |
| download | lwn-5ce59ae0bcc0f0ad249d21560c9bb5f6061e62a8.tar.gz lwn-5ce59ae0bcc0f0ad249d21560c9bb5f6061e62a8.zip | |
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>
| -rwxr-xr-x | scripts/checkpatch.pl | 6 |
1 files changed, 6 insertions, 0 deletions
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", |