From c2ce9e6de0a3dfea99de08af7b5eef5c983e76c8 Mon Sep 17 00:00:00 2001
From: Jonathan Corbet <corbet@lwn.net>
Date: Tue, 9 Sep 2025 13:35:37 -0600
Subject: [PATCH] docs: kdoc: handle the obsolescensce of
 docutils.ErrorString()

commit 00d95fcc4dee66dfb6980de6f2973b32f973a1eb upstream.

The ErrorString() and SafeString() docutils functions were helpers meant to
ease the handling of encodings during the Python 3 transition.  There is no
real need for them after Python 3.6, and docutils 0.22 removes them,
breaking the docs build

Handle this by just injecting our own one-liner version of ErrorString(),
and removing the sole SafeString() call entirely.

Reported-by: Zhixu Liu <zhixu.liu@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <87ldmnv2pi.fsf@trenco.lwn.net>
[Salvatore Bonaccorso: Backport to v6.17.y for context changes in
Documentation/sphinx/kernel_include.py with major refactorings for the v6.18
development cycle]
Signed-off-by: Salvatore Bonaccorso <carnil@debian.org>
---
 Documentation/sphinx/kernel_feat.py         | 4 +++-
 Documentation/sphinx/kernel_include.py      | 6 ++++--
 Documentation/sphinx/maintainers_include.py | 4 +++-
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/Documentation/sphinx/kernel_feat.py b/Documentation/sphinx/kernel_feat.py
index e3a51867f27b..aaac76892ceb 100644
--- a/Documentation/sphinx/kernel_feat.py
+++ b/Documentation/sphinx/kernel_feat.py
@@ -40,9 +40,11 @@ import sys
 from docutils import nodes, statemachine
 from docutils.statemachine import ViewList
 from docutils.parsers.rst import directives, Directive
-from docutils.utils.error_reporting import ErrorString
 from sphinx.util.docutils import switch_source_input
 
+def ErrorString(exc):  # Shamelessly stolen from docutils
+    return f'{exc.__class__.__name}: {exc}'
+
 __version__  = '1.0'
 
 def setup(app):
diff --git a/Documentation/sphinx/kernel_include.py b/Documentation/sphinx/kernel_include.py
index 1e566e87ebcd..641e81c58a8c 100755
--- a/Documentation/sphinx/kernel_include.py
+++ b/Documentation/sphinx/kernel_include.py
@@ -35,13 +35,15 @@
 import os.path
 
 from docutils import io, nodes, statemachine
-from docutils.utils.error_reporting import SafeString, ErrorString
 from docutils.parsers.rst import directives
 from docutils.parsers.rst.directives.body import CodeBlock, NumberLines
 from docutils.parsers.rst.directives.misc import Include
 
 __version__  = '1.0'
 
+def ErrorString(exc):  # Shamelessly stolen from docutils
+    return f'{exc.__class__.__name}: {exc}'
+
 # ==============================================================================
 def setup(app):
 # ==============================================================================
@@ -112,7 +114,7 @@ class KernelInclude(Include):
             raise self.severe('Problems with "%s" directive path:\n'
                               'Cannot encode input file path "%s" '
                               '(wrong locale?).' %
-                              (self.name, SafeString(path)))
+                              (self.name, path))
         except IOError as error:
             raise self.severe('Problems with "%s" directive path:\n%s.' %
                       (self.name, ErrorString(error)))
diff --git a/Documentation/sphinx/maintainers_include.py b/Documentation/sphinx/maintainers_include.py
index d31cff867436..519ad18685b2 100755
--- a/Documentation/sphinx/maintainers_include.py
+++ b/Documentation/sphinx/maintainers_include.py
@@ -22,10 +22,12 @@ import re
 import os.path
 
 from docutils import statemachine
-from docutils.utils.error_reporting import ErrorString
 from docutils.parsers.rst import Directive
 from docutils.parsers.rst.directives.misc import Include
 
+def ErrorString(exc):  # Shamelessly stolen from docutils
+    return f'{exc.__class__.__name}: {exc}'
+
 __version__  = '1.0'
 
 def setup(app):
-- 
2.51.0

