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=-5.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 40E8DC433E6 for ; Wed, 2 Sep 2020 01:45:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B749C206EF for ; Wed, 2 Sep 2020 01:45:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726814AbgIBBpy (ORCPT ); Tue, 1 Sep 2020 21:45:54 -0400 Received: from netrider.rowland.org ([192.131.102.5]:47927 "HELO netrider.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1726131AbgIBBow (ORCPT ); Tue, 1 Sep 2020 21:44:52 -0400 Received: (qmail 608512 invoked by uid 1000); 1 Sep 2020 21:44:51 -0400 Date: Tue, 1 Sep 2020 21:44:51 -0400 From: Alan Stern To: Khalid Aziz Cc: gregkh@linuxfoundation.org, erkka.talvitie@vincit.fi, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [RFC RESEND PATCH 0/1] USB EHCI: repeated resets on full and low speed devices Message-ID: <20200902014451.GA608383@rowland.harvard.edu> References: <20200901023117.GD571008@rowland.harvard.edu> <608418fa-b0ce-c2a4-ad79-fe505c842587@oracle.com> <20200901163602.GG587030@rowland.harvard.edu> <4d1ab90a-ec55-85e8-d646-cfa58f08d449@oracle.com> <20200901195159.GA599114@rowland.harvard.edu> <68228cc9-5d1a-6872-0956-a7006fe3b943@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <68228cc9-5d1a-6872-0956-a7006fe3b943@oracle.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 01, 2020 at 04:54:48PM -0600, Khalid Aziz wrote: > I have managed to find a hardware combination that seems to work, so for > now at least my machine is usable. I will figure out how to interpret > usbmon output and run more experiments. There seems to be a real problem > in the driver somewhere and should be solved. Correction: You're using two different drivers. Although it's not impossible, it seems very unlikely that they both contain the same bug. Alan Stern