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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AC917C433F5 for ; Fri, 3 Dec 2021 10:56:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1380194AbhLCK7a (ORCPT ); Fri, 3 Dec 2021 05:59:30 -0500 Received: from mga04.intel.com ([192.55.52.120]:20484 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237898AbhLCK73 (ORCPT ); Fri, 3 Dec 2021 05:59:29 -0500 X-IronPort-AV: E=McAfee;i="6200,9189,10186"; a="235690455" X-IronPort-AV: E=Sophos;i="5.87,284,1631602800"; d="scan'208";a="235690455" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Dec 2021 02:56:05 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.87,284,1631602800"; d="scan'208";a="655912586" Received: from mattu-haswell.fi.intel.com (HELO [10.237.72.199]) ([10.237.72.199]) by fmsmga001.fm.intel.com with ESMTP; 03 Dec 2021 02:56:03 -0800 To: Robert Munteanu , Mathias Nyman , Greg Kroah-Hartman Cc: tiwai@suse.com, regressions@lists.linux.dev, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org References: <35f7428b39f996c793f5b4a6a314772681c73d7a.camel@apache.org> From: Mathias Nyman Subject: Re: Regression: plugging in USB scanner breaks all USB functionality Message-ID: Date: Fri, 3 Dec 2021 12:57:38 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <35f7428b39f996c793f5b4a6a314772681c73d7a.camel@apache.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2.12.2021 16.55, Robert Munteanu wrote: > Hi, > > After updating from kernel 5.14.11 to 5.14.14 I am seeing the following > problem: > > When plugging in an USB scanner ( Brother DSMobile DS-740D ) to my > Lenovo P52 laptop I lose connection to all USB devices. Not only are > the devices no longer available on the host, but no power is drawn by > them. Only a reboot fixes the problem. > > The scanner is the only device that triggers the problem, even when it > is the only device plugged in. I have a host of other devices, > connected either directly or via a USB hub in my monitor: > There is one xhci patch in that range that has caused other issues: ff0e50d3564f xhci: Fix command ring pointer corruption while aborting a command That patch has a fix that is not yet applied, fix can be found here: https://lore.kernel.org/linux-usb/20211126122340.1193239-2-mathias.nyman@linux.intel.com/ or https://git.kernel.org/pub/scm/linux/kernel/git/mnyman/xhci.git/commit/?h=for-usb-linus&id=385b5b09c3546c87cfb730b76abe5f8d73c579a2 Does reverting the original patch, or applying the fix help? Thanks -Mathias