docs: ABI: make it parse ABI/stable as ReST-compatible files

Now that the stable ABI files are compatible with ReST,
parse them without converting complex descriptions as literal
blocks nor escaping special characters.

Please notice that escaping special characters will probably
be needed at descriptions, at least for the asterisk character.

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/59ccbaa75ff05f23e701dd9a0bbe118e9343a553.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/Documentation/sphinx/kernel_abi.py b/Documentation/sphinx/kernel_abi.py
index ce5f3b0..f3da859c 100644
--- a/Documentation/sphinx/kernel_abi.py
+++ b/Documentation/sphinx/kernel_abi.py
@@ -73,12 +73,13 @@
     u"""KernelABI (``kernel-abi``) directive"""
 
     required_arguments = 1
-    optional_arguments = 0
+    optional_arguments = 2
     has_content = False
     final_argument_whitespace = True
 
     option_spec = {
-        "debug"     : directives.flag
+        "debug"     : directives.flag,
+        "rst"       : directives.unchanged
     }
 
     def run(self):
@@ -92,6 +93,9 @@
         cmd = "get_abi.pl rest --enable-lineno --dir "
         cmd += self.arguments[0]
 
+        if 'rst' in self.options:
+            cmd += " --rst-source"
+
         srctree = path.abspath(os.environ["srctree"])
 
         fname = cmd