[PATCH 05/18] docs: kdoc_parser: fix variable regexes to work with size_t

[Mauro Carvalho Chehab]

The regular expressions meant to pick variable types are too
naive: they forgot that the type word may contain underlines.

It also means that we need to change the regex which detects
var attributes to handle "const".

Co-developed-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
Acked-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Tested-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@xxxxxxxxx>
---
 tools/lib/python/kdoc/kdoc_parser.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/lib/python/kdoc/kdoc_parser.py b/tools/lib/python/kdoc/kdoc_parser.py
index 9643ffb7584a..9c9443281c40 100644
--- a/tools/lib/python/kdoc/kdoc_parser.py
+++ b/tools/lib/python/kdoc/kdoc_parser.py
@@ -981,8 +981,9 @@ class KernelDoc:
         """
         VAR_ATTRIBS = [
             "extern",
+            "const",
         ]
-        OPTIONAL_VAR_ATTR = "^(?:" + "|".join(VAR_ATTRIBS) + ")?"
+        OPTIONAL_VAR_ATTR = r"^(?:\b(?:" +"|".join(VAR_ATTRIBS) +r")\b\s*)*"
 
         #
         # Store the full prototype before modifying it
@@ -1018,14 +1019,14 @@ class KernelDoc:
 
         default_val = None
 
-        r= KernRe(OPTIONAL_VAR_ATTR + r"\w.*\s+(?:\*+)?([\w_]+)\s*[\d\]\[]*\s*(=.*)?")
+        r= KernRe(OPTIONAL_VAR_ATTR + r"[\w_]*\s+(?:\*+)?([\w_]+)\s*[\d\]\[]*\s*(=.*)?")
         if r.match(proto):
             if not declaration_name:
                 declaration_name = r.group(1)
 
             default_val = r.group(2)
         else:
-            r= KernRe(OPTIONAL_VAR_ATTR + r"(?:\w.*)?\s+(?:\*+)?(?:[\w_]+)\s*[\d\]\[]*\s*(=.*)?")
+            r= KernRe(OPTIONAL_VAR_ATTR + r"(?:[\w_]*)?\s+(?:\*+)?(?:[\w_]+)\s*[\d\]\[]*\s*(=.*)?")
         if r.match(proto):
             default_val = r.group(1)
 
-- 
2.52.0