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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 38A93C1B0D9 for ; Tue, 8 Dec 2020 09:28:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DF11323A82 for ; Tue, 8 Dec 2020 09:28:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728860AbgLHJ2d (ORCPT ); Tue, 8 Dec 2020 04:28:33 -0500 Received: from mx3.molgen.mpg.de ([141.14.17.11]:45217 "EHLO mx1.molgen.mpg.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728362AbgLHJ2d (ORCPT ); Tue, 8 Dec 2020 04:28:33 -0500 Received: from [192.168.0.3] (unknown [95.90.244.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: pmenzel) by mx.molgen.mpg.de (Postfix) with ESMTPSA id 5BF0F20647B78; Tue, 8 Dec 2020 10:27:51 +0100 (CET) Subject: Re: usb usb1-port10: disabled by hub (EMI?), re-enabling... To: Greg KH , Mario Limonciello Cc: Mathias Nyman , USB list References: From: Paul Menzel Message-ID: <8c5d6edd-d41b-0d86-e0ea-d1a1689625de@molgen.mpg.de> Date: Tue, 8 Dec 2020 10:27:50 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.5.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Dear Greg, dear Mario, Am 08.12.20 um 09:57 schrieb Greg KH: > On Tue, Dec 08, 2020 at 09:18:08AM +0100, Paul Menzel wrote: >> On a Dell Precision 3540/0M14W7, BIOS 1.9.1 07/06/2020 >> >> $ lspci -nn | grep -i usb >> 00:14.0 USB controller [0c03]: Intel Corporation Cannon Point-LP USB 3.1 >> xHCI Controller [8086:9ded] (rev 30) >> 3a:00.0 USB controller [0c03]: Intel Corporation JHL6340 Thunderbolt 3 >> USB 3.1 Controller (C step) [Alpine Ridge 2C 2016] [8086:15db] (rev 02) >> >> at each boot Linux 5.6 to 5.9 logs the error below. >> >> [ 95.528190] usb usb1-port10: disabled by hub (EMI?), re-enabling... >> >> Everything seems to be fine, so I wonder, why this is level error. Is it a >> hardware error? > > Yes, it is a hardware issue. Thank you for the confirmation. Mario, do you know if this issues is known to the Dell hardware team? Kind regards, Paul