From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752741AbcFVPiv (ORCPT ); Wed, 22 Jun 2016 11:38:51 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:45578 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751453AbcFVPiu convert rfc822-to-8bit (ORCPT ); Wed, 22 Jun 2016 11:38:50 -0400 To: rtatiya@codeaurora.org Cc: Greg KH , Robert Ancell , Alan Stern , "mathias.nyman@linux.intel.com" , chasemetzger15@gmail.com, baolu.lu@linux.intel.com, oneukum@suse.com, kborer@gmail.com, jun.li@freescale.com, USB list , LKML From: Joseph Salisbury Subject: [v4.2-rc1 Regression] usb: Enable LPM for USB 2.01+ full-speed devices Message-ID: <576AB103.4060301@canonical.com> Date: Wed, 22 Jun 2016 11:38:43 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Rupesh, A kernel bug report was opened against Ubuntu [0]. After a kernel bisect, it was found that reverting the following commit resolved this bug: commit a8425292816ceaa8c49e29d2114e85d85a73e080 Author: Rupesh Tatiya Date: Tue Apr 14 16:36:55 2015 +0530 usb: Enable LPM for USB 2.01+ full-speed devices The regression was introduced as of v4.2-rc1. I was hoping to get your feedback, since you are the patch author. Do you think gathering any additional data will help diagnose this issue, or would it be best to submit a revert request? Thanks, Joe [0] http://pad.lv/1498667