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| author |   Joe Perches <joe@perches.com> | 2020-08-11 18:35:07 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-12 10:58:00 -0700 |
| commit | 50161266973bcc662e969e63d68fc7bff71de21b (patch) | |
| tree | f6a539ea3bf3c376554191c9b72961d21a7abfc9 /scripts/checkpatch.pl | |
| parent | lib/test_bits.c: add tests of GENMASK (diff) | |
| download | linux-dev-50161266973bcc662e969e63d68fc7bff71de21b.tar.xz linux-dev-50161266973bcc662e969e63d68fc7bff71de21b.zip | |
checkpatch: add test for possible misuse of IS_ENABLED() without CONFIG_
IS_ENABLED is almost always used with CONFIG_<FOO> defines.
Add a test to verify that the #define being tested starts with CONFIG_.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: http://lkml.kernel.org/r/e7fda760b91b769ba82844ba282d432c0d26d709.camel@perches.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts/checkpatch.pl')
| -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 599b8c4933a7..ba9ab2b42d73 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -6465,6 +6465,12 @@ sub process { } } +# check for IS_ENABLED() without CONFIG_<FOO> ($rawline for comments too) + if ($rawline =~ /\bIS_ENABLED\s*\(\s*(\w+)\s*\)/ && $1 !~ /^CONFIG_/) { + WARN("IS_ENABLED_CONFIG", + "IS_ENABLED($1) is normally used as IS_ENABLED(CONFIG_$1)\n" . $herecurr); + } + # check for #if defined CONFIG_<FOO> || defined CONFIG_<FOO>_MODULE if ($line =~ /^\+\s*#\s*if\s+defined(?:\s*\(?\s*|\s+)(CONFIG_[A-Z_]+)\s*\)?\s*\|\|\s*defined(?:\s*\(?\s*|\s+)\1_MODULE\s*\)?\s*$/) { my $config = $1; |