scripts/kernel-doc: Remove duplicated DOC: start handling

Further up in the state machinery we switch from STATE_NAME to
STATE_DOCBLOCK when we match /$doc_block/. Which means this block of
code here is entirely unreachable, unless there are multiple DOC:
sections within a single kernel-doc comment.

Getting a list of all the files with more than one DOC: section using

$ git grep -c " * DOC:" | grep -v ":1$"

and then doing a full audit of them reveals there are no such comment
blocks in the kernel.

Supporting multiple DOC: sections in a single kernel-doc comment does
not seem like a recommended way of doing things anyway, so nuke the code
for simplicity.

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: linux-doc@vger.kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[Jani: amended the commit message]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 0eb2e7b..9fb26d1 100755 (executable)
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -2942,24 +2942,7 @@ sub process_file($) {
                process_state3_type($_, $file);
            }
        } elsif ($state == STATE_DOCBLOCK) {
-               # Documentation block
-               if (/$doc_block/) {
-                       dump_doc_section($file, $section, xml_escape($contents));
-                       $contents = "";
-                       $function = "";
-                       %parameterdescs = ();
-                       %parametertypes = ();
-                       @parameterlist = ();
-                       %sections = ();
-                       @sectionlist = ();
-                       $prototype = "";
-                       if ( $1 eq "" ) {
-                               $section = $section_intro;
-                       } else {
-                               $section = $1;
-                       }
-               }
-               elsif (/$doc_end/)
+               if (/$doc_end/)
                {
                        dump_doc_section($file, $section, xml_escape($contents));
                        $section = $section_default;