DPDK-dev Archive on lore.kernel.org
 help / color / mirror / Atom feed
From: Thomas Monjalon <thomas@monjalon.net>
To: dev@dpdk.org
Cc: stable@dpdk.org, "Luca Vizzarro" <luca.vizzarro@arm.com>,
	"Patrick Robb" <probb@iol.unh.edu>,
	"Dean Marx" <dmarx@iol.unh.edu>,
	"Juraj Linkeš" <juraj.linkes@pantheon.tech>,
	"Jeremy Spewock" <jspewock@iol.unh.edu>
Subject: [PATCH] dts: fix topology capability comparison
Date: Sun, 10 May 2026 21:49:34 +0200	[thread overview]
Message-ID: <20260510194935.182258-1-thomas@monjalon.net> (raw)

TopologyCapability.__gt__() was delegating to __lt__(),
which caused infinite recursion when "other" is not a TopologyCapability:
other.__lt__(self) returns NotImplemented,
Python retries with self.__gt__(other),
and the cycle repeats.

dts/framework/testbed_model/capability.py", line 579, in __gt__
        return other < self
               ^^^^^^^^^^^^
    RecursionError: maximum recursion depth exceeded

Similarly, __le__() was delegating to "not __gt__()",
which returns True for non-comparable types instead of False.

Fix both by checking is_comparable_with() first
and comparing topology_type directly, consistent with __lt__().

Fixes: 039256daa8bf ("dts: add topology capability")
Cc: stable@dpdk.org

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
---
 dts/framework/testbed_model/capability.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/dts/framework/testbed_model/capability.py b/dts/framework/testbed_model/capability.py
index 960370fc72..96e1cd449f 100644
--- a/dts/framework/testbed_model/capability.py
+++ b/dts/framework/testbed_model/capability.py
@@ -574,7 +574,9 @@ def __gt__(self, other: Any) -> bool:
         Returns:
             :data:`True` if the instance's topology type is more complex than the compared object's.
         """
-        return other < self
+        if not self.is_comparable_with(other):
+            return False
+        return self.topology_type > other.topology_type
 
     def __le__(self, other: Any) -> bool:
         """Compare the :attr:`~TopologyCapability.topology_type`s.
@@ -586,7 +588,9 @@ def __le__(self, other: Any) -> bool:
             :data:`True` if the instance's topology type is less complex or equal than
             the compared object's.
         """
-        return not self > other
+        if not self.is_comparable_with(other):
+            return False
+        return self.topology_type <= other.topology_type
 
     def __hash__(self):
         """Each instance is identified by :attr:`topology_type`."""
-- 
2.54.0


                 reply	other threads:[~2026-05-10 19:49 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20260510194935.182258-1-thomas@monjalon.net \
    --to=thomas@monjalon.net \
    --cc=dev@dpdk.org \
    --cc=dmarx@iol.unh.edu \
    --cc=jspewock@iol.unh.edu \
    --cc=juraj.linkes@pantheon.tech \
    --cc=luca.vizzarro@arm.com \
    --cc=probb@iol.unh.edu \
    --cc=stable@dpdk.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox