kernel-doc: fix unnamed struct/union warning

Fix kernel-doc warning:
Warning(linux-2.6.22-rc2-git2/include/linux/skbuff.h:316): No description found for parameter '}'

which is caused by nested anonymous structs/unions ending with:
  };
};

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index e5bf649..08894f4 100755 (executable)
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -154,6 +154,7 @@ use strict;
 
 my $errors = 0;
 my $warnings = 0;
+my $anon_struct_union = 0;
 
 # match expressions used to find embedded type information
 my $type_constant = '\%([-_\w]+)';
@@ -1510,8 +1511,13 @@ sub push_parameter($$$) {
        my $param = shift;
        my $type = shift;
        my $file = shift;
-       my $anon = 0;
 
+       if (($anon_struct_union == 1) && ($type eq "") &&
+           ($param eq "}")) {
+               return;         # ignore the ending }; from anon. struct/union
+       }
+
+       $anon_struct_union = 0;
        my $param_name = $param;
        $param_name =~ s/\[.*//;
 
@@ -1530,16 +1536,16 @@ sub push_parameter($$$) {
        # handle unnamed (anonymous) union or struct:
        {
                $type = $param;
-               $param = "{unnamed_" . $param. "}";
+               $param = "{unnamed_" . $param . "}";
                $parameterdescs{$param} = "anonymous\n";
-               $anon = 1;
+               $anon_struct_union = 1;
        }
 
        # warn if parameter has no description
        # (but ignore ones starting with # as these are not parameters
        # but inline preprocessor statements);
        # also ignore unnamed structs/unions;
-       if (!$anon) {
+       if (!$anon_struct_union) {
        if (!defined $parameterdescs{$param_name} && $param_name !~ /^#/) {
 
            $parameterdescs{$param_name} = $undescribed;