[PATCH v2] patman: Fix defaults not propagating to subparsers

[Sean Anderson <sean.anderson@seco.com>]

On python 3.8.10 (and 3.10), subparsers are not updated with defaults. I
suspect this is related to [1]. Fix this by explicitly updating
subparsers with settings.

[1] https://github.com/python/cpython/issues/89398

Fixes: 3145b63513 ("patman: Update defaults in subparsers")
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Tested-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
---

Changes in v2:
- Fix spelling of "propagating" in commit message
- Update comment to more clearly indicate intent

 tools/patman/settings.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tools/patman/settings.py b/tools/patman/settings.py
index 7c2b5c196c..4c847fe88f 100644
--- a/tools/patman/settings.py
+++ b/tools/patman/settings.py
@@ -246,8 +246,10 @@ def _UpdateDefaults(main_parser, config):
 
     # Collect the defaults from each parser
     defaults = {}
+    parser_defaults = []
     for parser in parsers:
         pdefs = parser.parse_known_args()[0]
+        parser_defaults.append(pdefs)
         defaults.update(vars(pdefs))
 
     # Go through the settings and collect defaults
@@ -264,8 +266,11 @@ def _UpdateDefaults(main_parser, config):
         else:
             print("WARNING: Unknown setting %s" % name)
 
-    # Set all the defaults (this propagates through all subparsers)
+    # Set all the defaults and manually propagate them to subparsers
     main_parser.set_defaults(**defaults)
+    for parser, pdefs in zip(parsers, parser_defaults):
+        parser.set_defaults(**{ k: v for k, v in defaults.items()
+                                    if k in pdefs })
 
 def _ReadAliasFile(fname):
     """Read in the U-Boot git alias file if it exists.
-- 
2.35.1.1320.gc452695387.dirty