From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from canardo.mork.no ([148.122.252.1]:45187 "EHLO canardo.mork.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751418Ab2GZQYz convert rfc822-to-8bit (ORCPT ); Thu, 26 Jul 2012 12:24:55 -0400 From: =?utf-8?Q?Bj=C3=B8rn_Mork?= To: Alan Stern Cc: Huang Ying , huang ying , "Rafael J. Wysocki" , Zheng Yan , Bjorn Helgaas , , Subject: Re: bisected regression, v3.5 -> next-20120724: PCI PM causes USB hotplug failure References: Date: Thu, 26 Jul 2012 18:24:36 +0200 In-Reply-To: (Alan Stern's message of "Thu, 26 Jul 2012 11:03:40 -0400 (EDT)") Message-ID: <87d33iij7f.fsf@nemi.mork.no> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Sender: linux-pci-owner@vger.kernel.org List-ID: Alan Stern writes: >> USB hotplugging seems to work fine with this. > > Don't be too sure. Have you tested to see if it still works after > doing "rmmod ehci-hcd"? > > So far you have tested the EHCI controllers, but have you tested the > UHCI controllers? Unloading ehci-hcd will force them to be used. Good point. Now tested and seems to work. But I'd appreciate it if someone else were able to doublecheck my results. I am juggling with a number of settings and could easily mess up something, invalidating the tests. I believe the issue should be present in lots of systems, isn't that correct? Any GM45 based laptop should do as a test bench, and maybe others too. The WiFi issues I had also indicates that these changes should be tested on as many different systems as possible. Bjørn