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diff -Nur a/Documentation/conf.py b/Documentation/conf.py
--- a/Documentation/conf.py	2018-10-22 14:37:37.000000000 +0800
+++ b/Documentation/conf.py	2019-04-23 21:00:17.000000000 +0800
@@ -37,7 +37,7 @@
 extensions = ['kerneldoc', 'rstFlatTable', 'kernel_include', 'cdomain', 'kfigure', 'sphinx.ext.ifconfig']
 
 # The name of the math extension changed on Sphinx 1.4
-if major == 1 and minor > 3:
+if (major == 1 and minor > 3) or major > 1:
     extensions.append("sphinx.ext.imgmath")
 else:
     extensions.append("sphinx.ext.pngmath")
diff -Nur a/Documentation/sphinx/kerneldoc.py b/Documentation/sphinx/kerneldoc.py
--- a/Documentation/sphinx/kerneldoc.py	2018-10-22 14:37:37.000000000 +0800
+++ b/Documentation/sphinx/kerneldoc.py	2019-04-23 21:16:41.000000000 +0800
@@ -37,7 +37,10 @@
 from docutils import nodes, statemachine
 from docutils.statemachine import ViewList
 from docutils.parsers.rst import directives, Directive
-from sphinx.ext.autodoc import AutodocReporter
+from sphinx.util.docutils import switch_source_input
+
+from sphinx.util import logging
+logger = logging.getLogger(__name__)
 
 __version__  = '1.0'
 
@@ -90,7 +93,7 @@
         cmd += [filename]
 
         try:
-            env.app.verbose('calling kernel-doc \'%s\'' % (" ".join(cmd)))
+            logger.verbose('calling kernel-doc \'%s\'' % (" ".join(cmd)))
 
             p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
             out, err = p.communicate()
@@ -100,7 +103,7 @@
             if p.returncode != 0:
                 sys.stderr.write(err)
 
-                env.app.warn('kernel-doc \'%s\' failed with return code %d' % (" ".join(cmd), p.returncode))
+                logger.warning('kernel-doc \'%s\' failed with return code %d' % (" ".join(cmd), p.returncode))
                 return [nodes.error(None, nodes.paragraph(text = "kernel-doc missing"))]
             elif env.config.kerneldoc_verbosity > 0:
                 sys.stderr.write(err)
@@ -122,17 +125,17 @@
 
             node = nodes.section()
             buf = self.state.memo.title_styles, self.state.memo.section_level, self.state.memo.reporter
-            self.state.memo.reporter = AutodocReporter(result, self.state.memo.reporter)
             self.state.memo.title_styles, self.state.memo.section_level = [], 0
             try:
-                self.state.nested_parse(result, 0, node, match_titles=1)
+                with switch_source_input(self.state, result):
+                    self.state.nested_parse(result, 0, node, match_titles=1)
             finally:
                 self.state.memo.title_styles, self.state.memo.section_level, self.state.memo.reporter = buf
 
             return node.children
 
         except Exception as e:  # pylint: disable=W0703
-            env.app.warn('kernel-doc \'%s\' processing failed with: %s' %
+            logger.warning('kernel-doc \'%s\' processing failed with: %s' %
                          (" ".join(cmd), str(e)))
             return [nodes.error(None, nodes.paragraph(text = "kernel-doc missing"))]
 
diff -Nur a/Documentation/sphinx/kfigure.py b/Documentation/sphinx/kfigure.py
--- a/Documentation/sphinx/kfigure.py	2018-10-22 14:37:37.000000000 +0800
+++ b/Documentation/sphinx/kfigure.py	2019-04-23 21:13:32.000000000 +0800
@@ -60,6 +60,9 @@
 from sphinx.util.nodes import clean_astext
 from six import iteritems
 
+from sphinx.util import logging
+logger = logging.getLogger(__name__)
+
 PY3 = sys.version_info[0] == 3
 
 if PY3:
@@ -171,20 +174,20 @@
     This function is called once, when the builder is initiated.
     """
     global dot_cmd, convert_cmd   # pylint: disable=W0603
-    app.verbose("kfigure: check installed tools ...")
+    logger.verbose("kfigure: check installed tools ...")
 
     dot_cmd = which('dot')
     convert_cmd = which('convert')
 
     if dot_cmd:
-        app.verbose("use dot(1) from: " + dot_cmd)
+        logger.verbose("use dot(1) from: " + dot_cmd)
     else:
-        app.warn("dot(1) not found, for better output quality install "
+        logger.warning("dot(1) not found, for better output quality install "
                  "graphviz from http://www.graphviz.org")
     if convert_cmd:
-        app.verbose("use convert(1) from: " + convert_cmd)
+        logger.verbose("use convert(1) from: " + convert_cmd)
     else:
-        app.warn(
+        logger.warning(
             "convert(1) not found, for SVG to PDF conversion install "
             "ImageMagick (https://www.imagemagick.org)")
 
@@ -220,12 +223,12 @@
 
     # in kernel builds, use 'make SPHINXOPTS=-v' to see verbose messages
 
-    app.verbose('assert best format for: ' + img_node['uri'])
+    logger.verbose('assert best format for: ' + img_node['uri'])
 
     if in_ext == '.dot':
 
         if not dot_cmd:
-            app.verbose("dot from graphviz not available / include DOT raw.")
+            logger.verbose("dot from graphviz not available / include DOT raw.")
             img_node.replace_self(file2literal(src_fname))
 
         elif translator.builder.format == 'latex':
@@ -252,7 +255,7 @@
 
         if translator.builder.format == 'latex':
             if convert_cmd is None:
-                app.verbose("no SVG to PDF conversion available / include SVG raw.")
+                logger.verbose("no SVG to PDF conversion available / include SVG raw.")
                 img_node.replace_self(file2literal(src_fname))
             else:
                 dst_fname = path.join(translator.builder.outdir, fname + '.pdf')
@@ -265,18 +268,18 @@
         _name = dst_fname[len(translator.builder.outdir) + 1:]
 
         if isNewer(dst_fname, src_fname):
-            app.verbose("convert: {out}/%s already exists and is newer" % _name)
+            logger.verbose("convert: {out}/%s already exists and is newer" % _name)
 
         else:
             ok = False
             mkdir(path.dirname(dst_fname))
 
             if in_ext == '.dot':
-                app.verbose('convert DOT to: {out}/' + _name)
+                logger.verbose('convert DOT to: {out}/' + _name)
                 ok = dot2format(app, src_fname, dst_fname)
 
             elif in_ext == '.svg':
-                app.verbose('convert SVG to: {out}/' + _name)
+                logger.verbose('convert SVG to: {out}/' + _name)
                 ok = svg2pdf(app, src_fname, dst_fname)
 
             if not ok:
@@ -305,7 +308,7 @@
     with open(out_fname, "w") as out:
         exit_code = subprocess.call(cmd, stdout = out)
         if exit_code != 0:
-            app.warn("Error #%d when calling: %s" % (exit_code, " ".join(cmd)))
+            logger.warning("Error #%d when calling: %s" % (exit_code, " ".join(cmd)))
     return bool(exit_code == 0)
 
 def svg2pdf(app, svg_fname, pdf_fname):
@@ -322,7 +325,7 @@
     # use stdout and stderr from parent
     exit_code = subprocess.call(cmd)
     if exit_code != 0:
-        app.warn("Error #%d when calling: %s" % (exit_code, " ".join(cmd)))
+        logger.warning("Error #%d when calling: %s" % (exit_code, " ".join(cmd)))
     return bool(exit_code == 0)
 
 
@@ -415,15 +418,15 @@
     app = self.builder.app
     srclang = node.get('srclang')
 
-    app.verbose('visit kernel-render node lang: "%s"' % (srclang))
+    logger.verbose('visit kernel-render node lang: "%s"' % (srclang))
 
     tmp_ext = RENDER_MARKUP_EXT.get(srclang, None)
     if tmp_ext is None:
-        app.warn('kernel-render: "%s" unknown / include raw.' % (srclang))
+        logger.warning('kernel-render: "%s" unknown / include raw.' % (srclang))
         return
 
     if not dot_cmd and tmp_ext == '.dot':
-        app.verbose("dot from graphviz not available / include raw.")
+        logger.verbose("dot from graphviz not available / include raw.")
         return
 
     literal_block = node[0]