From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4AE06C433ED for ; Mon, 19 Apr 2021 21:26:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1367461369 for ; Mon, 19 Apr 2021 21:26:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231138AbhDSV0g (ORCPT ); Mon, 19 Apr 2021 17:26:36 -0400 Received: from mail.kernel.org ([198.145.29.99]:39400 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229714AbhDSV0e (ORCPT ); Mon, 19 Apr 2021 17:26:34 -0400 Received: by mail.kernel.org (Postfix) with ESMTPS id D1E5261369 for ; Mon, 19 Apr 2021 21:26:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1618867563; bh=b1rKpLN/zS1HNoMqgHK1pEAUz7XZjQrn8VrolvGLr4g=; h=From:To:Subject:Date:In-Reply-To:References:From; b=tL6NOiKiCBeHfFBADaFFXZ4W5RXG4+EcKsZ4mazSEYBr1plJ3TGC1xDNN5bLWJuXs +AF9id4xTS6GUjGGVo/KzXgqzeKbWKFyyATwWpTpiOLHCajx6UFdCvN9fNqZ4R1FsJ dNkNvcSrTv2dx8AoIqX00MIB4AUeTUxj+Ozq5eoRWaPqC+X4NWxOVp+ht3ykYb2pj1 2/+por1XMV9PES/BA4wbOTYqvs94WK/3YNyptEly2EA/PVggNbDlqLmJMhDa4B6CCY RE6e1YoA7HRmhh4lRIoH2hVLZ2oqCeYER26Zg8P/MuyBXBxUeRMyTDLGjpi3Wpn484 8AjnvzLZiRH/Q== From: bugzilla-daemon@bugzilla.kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 212725] USB CDC ACM device stop working Date: Mon, 19 Apr 2021 21:26:03 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: USB X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: high X-Bugzilla-Who: stefan@agner.ch X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D212725 --- Comment #1 from Stefan Agner (stefan@agner.ch) --- I went back and installed some older LTS kernel I had at hand. It seems that 5.10.26 was still working and 5.10.29 is broken. I don't have kernels at ha= nd inbetween, but hopefully this narrows it down already sufficently. This is on a AMD Ryzen 9 3900X platform using a AMD X570 motherboard. The U= SB 2.0 devices are connected through USB 3.0 hub, but also connecting them directly to the root port seems to exhibit the issue. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=