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authorJoe Perches <joe@perches.com>2018-02-06 15:38:49 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-02-06 18:32:45 -0800
commit73121534c963f7b6d22547a9ad8bff1793748433 (patch)
tree5309ec04ed1ada851c738a010b0244073defe113 /scripts/checkpatch.pl
parent2e4bbbc550be336cbb3defc67430fc0700aa1426 (diff)
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@perches.com Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> 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>
Diffstat (limited to 'scripts/checkpatch.pl')
-rwxr-xr-xscripts/checkpatch.pl9
1 files changed, 7 insertions, 2 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 4306b7616cdd..168687ae24fa 100755
--- a/scripts/checkpatch.pl
+++ b/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);
}