kernel-doc: do not warn about duplicate default section names

Since

commit 32217761ee9db0215350dfe1ca4e66f312fb8c54
Author: Jani Nikula <jani.nikula@intel.com>
Date:   Sun May 29 09:40:44 2016 +0300

    kernel-doc: concatenate contents of colliding sections

we started getting (more) errors on duplicate section names, especially
on the default section name "Description":

include/net/mac80211.h:3174: warning: duplicate section name 'Description'

This is usually caused by a slightly unorthodox placement of parameter
descriptions, like in the above case, and kernel-doc resetting back to
the default section more than once within a kernel-doc comment.

Ignore warnings on the duplicate section name automatically assigned by
kernel-doc, and only consider explicitly user assigned duplicate section
names an issue.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index ac18eb5..710615f 100755 (executable)
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -542,8 +542,11 @@ sub dump_section {
         $new_start_line = 0;
     } else {
        if (defined($sections{$name}) && ($sections{$name} ne "")) {
-           print STDERR "${file}:$.: warning: duplicate section name '$name'\n";
-           ++$warnings;
+           # Only warn on user specified duplicate section names.
+           if ($name ne $section_default) {
+               print STDERR "${file}:$.: warning: duplicate section name '$name'\n";
+               ++$warnings;
+           }
            $sections{$name} .= $contents;
        } else {
            $sections{$name} = $contents;