From: Joe Perches <joe@xxxxxxxxxxx> Subject: checkpatch: ignore some octal permissions of 0 module_param and create_proc uses with a permissions use of a single 0 are "special" and should not emit any warning. module_param uses with permission 0 are not visible in sysfs create_proc uses with permission 0 use a default permission Link: http://lkml.kernel.org/r/b6583611bb529ea6f6d43786827fddbabbab0a71.1513190059.git.joe@xxxxxxxxxxx Signed-off-by: Bartosz Golaszewski <brgl@xxxxxxxx> Signed-off-by: Joe Perches <joe@xxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- scripts/checkpatch.pl | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff -puN scripts/checkpatch.pl~checkpatch-ignore-some-octal-permissions-of-0 scripts/checkpatch.pl --- a/scripts/checkpatch.pl~checkpatch-ignore-some-octal-permissions-of-0 +++ a/scripts/checkpatch.pl @@ -6276,6 +6276,10 @@ sub process { # Mode permission misuses where it seems decimal should be octal # This uses a shortcut match to avoid unnecessary uses of a slow foreach loop +# o Ignore module_param*(...) uses with a decimal 0 permission as that has a +# specific definition of not visible in sysfs. +# o Ignore proc_create*(...) uses with a decimal 0 permission as that means +# use the default permissions if ($^V && $^V ge 5.10.0 && defined $stat && $line =~ /$mode_perms_search/) { @@ -6299,8 +6303,9 @@ sub process { if ($stat =~ /$test/) { my $val = $1; $val = $6 if ($skip_args ne ""); - if (($val =~ /^$Int$/ && $val !~ /^$Octal$/) || - ($val =~ /^$Octal$/ && length($val) ne 4)) { + if (!($func =~ /^(?:module_param|proc_create)/ && $val eq "0") && + (($val =~ /^$Int$/ && $val !~ /^$Octal$/) || + ($val =~ /^$Octal$/ && length($val) ne 4))) { ERROR("NON_OCTAL_PERMISSIONS", "Use 4 digit octal (0777) not decimal permissions\n" . "$here\n" . $stat_real); } _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
