kernel-doc: escape xml for structs

scripts/kernel-doc was leaving unescaped '<', '>', and '&' in
generated xml output for structs.  This causes xml parser errors.
Convert these characters to "&lt;", "&gt;", and "&amp;" as needed
to prevent errors.

Most of the conversion was already done; complete it just before
output.

Documentation/DocBook/device-drivers.xml:41883: parser error : StartTag: invalid element name
#define INPUT_KEYMAP_BY_INDEX	(1 << 0)

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

diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index cdb6dc1..39580a5 100755 (executable)
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -5,7 +5,7 @@ use strict;
 ## Copyright (c) 1998 Michael Zucchi, All Rights Reserved        ##
 ## Copyright (C) 2000, 1  Tim Waugh <twaugh@redhat.com>          ##
 ## Copyright (C) 2001  Simon Huggins                             ##
-## Copyright (C) 2005-2009  Randy Dunlap                         ##
+## Copyright (C) 2005-2010  Randy Dunlap                         ##
 ##                                                              ##
 ## #define enhancements by Armin Kuster <akuster@mvista.com>    ##
 ## Copyright (c) 2000 MontaVista Software, Inc.                         ##
@@ -453,7 +453,7 @@ sub output_highlight {
     if ($output_mode eq "html" || $output_mode eq "xml") {
        $contents = local_unescape($contents);
        # convert data read & converted thru xml_escape() into &xyz; format:
-       $contents =~ s/\\\\\\/&/g;
+       $contents =~ s/\\\\\\/\&/g;
     }
 #   print STDERR "contents b4:$contents\n";
     eval $dohighlight;
@@ -770,7 +770,11 @@ sub output_struct_xml(%) {
     print $args{'type'} . " " . $args{'struct'} . " {\n";
     foreach $parameter (@{$args{'parameterlist'}}) {
        if ($parameter =~ /^#/) {
-           print "$parameter\n";
+           my $prm = $parameter;
+           # convert data read & converted thru xml_escape() into &xyz; format:
+           # This allows us to have #define macros interspersed in a struct.
+           $prm =~ s/\\\\\\/\&/g;
+           print "$prm\n";
            next;
        }
 
@@ -1701,6 +1705,8 @@ sub push_parameter($$$) {
        }
        }
 
+       $param = xml_escape($param);
+
        # strip spaces from $param so that it is one continous string
        # on @parameterlist;
        # this fixes a problem where check_sections() cannot find