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=-4.7 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 27B53C433ED for ; Fri, 7 May 2021 15:07:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E44506145A for ; Fri, 7 May 2021 15:07:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233369AbhEGPIk (ORCPT ); Fri, 7 May 2021 11:08:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:39560 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231815AbhEGPIj (ORCPT ); Fri, 7 May 2021 11:08:39 -0400 Received: by mail.kernel.org (Postfix) with ESMTPS id E315E61415 for ; Fri, 7 May 2021 15:07:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1620400058; bh=RMrrSVMlxlosEh2CyM0hzbq/0ecyn6OrbB/Swcd4kL4=; h=From:To:Subject:Date:In-Reply-To:References:From; b=oTL6T3LqP6YGDyeiOSIAUttQ2M4QPSQx1WPsO8wyLGOR2/yIwHsv9C4WU0rKLGtaF 6NMYVFLOlGKRNpmFcg0gGZ+7J65JIf8wOfp81PGCYuO5ovCjAjsbqgzyFnsBxi1Xmd P4Cg/joezw5N8ErY3tCk6cgS3GaTOCxqKtNOkuoBTAXi0wdEnOSzYUxzSNIvozQf6H aFJ3d3NCS98IQYSwjMreNDlp/PBuC184JNkWJa1DGvgm5ZhCjFo25D4B8NEisIYN9Y P55ZRmS8/nuO3kbkWEL6zhPJUIVF3VuoS/l1WsH5ghfeGZsEaTRhPWOjluCflM+68p wzfKUTh1gGz8Q== From: bugzilla-daemon@bugzilla.kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 212955] Possible kernel regression USB2 (not USB3) port EDIROL UA-101 (in USB 1.1 mode, not USB2) error -110 Date: Fri, 07 May 2021 15:07:38 +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: normal X-Bugzilla-Who: stern@rowland.harvard.edu 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=3D212955 --- Comment #9 from Alan Stern (stern@rowland.harvard.edu) --- Interesting. I don't see any particular differences as far as the USB core= is concerned, but there are major differences in the way the device gets used.= =20 You can even see it in the dmesg output: [ 963.375444] usb 4-1.5: 0:1: add audio endpoint 0x2 [ 963.376273] usb 4-1.5: 1:1: add audio endpoint 0x81 Those lines are present in 5.9 but not in 5.12, and they occur before the problem happens. These messages may not be directly relevant to the proble= m at hand, but they do point to changes in the audio drivers. Those changes may expose a bug somewhere else. Judging from these results, I will guess that your bisection tests will pinpoint a commit that affects the snd-ua101 audio driver. --=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.=