Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161267AbVIPTAm (ORCPT ); Fri, 16 Sep 2005 15:00:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161269AbVIPTAm (ORCPT ); Fri, 16 Sep 2005 15:00:42 -0400 Received: from iolanthe.rowland.org ([192.131.102.54]:63949 "HELO iolanthe.rowland.org") by vger.kernel.org with SMTP id S1161267AbVIPTAl (ORCPT ); Fri, 16 Sep 2005 15:00:41 -0400 Date: Fri, 16 Sep 2005 15:00:40 -0400 (EDT) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: Greg KH cc: Alan Cox , , Andrew Morton , , , David Brownell , Subject: Re: [linux-usb-devel] Re: Lost keyboard on Inspiron 8200 at 2.6.13 In-Reply-To: <20050916184440.GA11413@kroah.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1451 Lines: 31 On Fri, 16 Sep 2005, Greg KH wrote: > On Fri, Sep 16, 2005 at 05:00:49PM +0100, Alan Cox wrote: > > On Gwe, 2005-09-16 at 10:25 -0500, Dmitry Torokhov wrote: > > > Interdependencies between ACPI, PNP, USB Legacy emulation and I8042 is > > > very delicate and quite often changes in ACPI/PNP break that balance. > > > USB legacy emulation is just evil. We need to have "usb-handoff" thing > > > enabled by default, it fixes alot of problems. > > > > I would definitely agree with this. There are very few, if any, cases > > usb handoff doesn't work now that the Nvidia problems are fixed. > > Are we sure? Yeah, SuSE has shipped that code "enabled" for a while, > but I'm still not comfortable making that the default. > > Only if we merge the code that does the handoff, with the same code that > does it in the usb core, would I feel more comfortable to enable this > always. I had a patch from David Brownell to do this, but it had some > link errors at times, so I had to drop it :( Merging the code would be a good thing. As it stands right now, bad interactions between the PCI handoff code and uhci-hcd will prevent UHCI controllers from retaining state across a suspend-to-disk. Alan Stern - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/