Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752748Ab0DTARF (ORCPT ); Mon, 19 Apr 2010 20:17:05 -0400 Received: from mail-ew0-f220.google.com ([209.85.219.220]:37477 "EHLO mail-ew0-f220.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752387Ab0DTARB convert rfc822-to-8bit (ORCPT ); Mon, 19 Apr 2010 20:17:01 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=T7bTjiWJVr2Nsrsy+HmsNOKglt6ReX9G+aazn3OUwVodIaBMF8oVkiih3XpKF/B3nq rzzUBIz1zabzb1QEfFwBq2R4PCEe0QUgwafVMDKspne+Exx1O9ch/QQxt9D6WK7lfpFx VPBsbGHidrrkeFBGCIlcL8gxgYrIBs71xQFhE= MIME-Version: 1.0 In-Reply-To: References: Date: Tue, 20 Apr 2010 01:16:58 +0100 Message-ID: Subject: Re: USB transfer_buffer allocations on 64bit systems From: Pedro Ribeiro To: Alan Stern , Daniel Mack Cc: Chris Wright , David Woodhouse , USB list , Andi Kleen , Kernel development list , Andrew Morton , Greg KH , iommu@lists.linux-foundation.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1555 Lines: 40 On 15 April 2010 16:20, Alan Stern wrote: > On Thu, 15 Apr 2010, Pedro Ribeiro wrote: > >> I enabled ?CONFIG_DMAR_BROKEN_GFX_WA=y and the result is the same. A >> delay in the boot process and usb devices don't work properly, >> including my USB mouse. >> >> Strange, since you have the same platform as me. The extra usb devices >> you were seeing are because of my docking station - but it makes no >> difference whether I'm docked or not for the purposes of the original >> bug or this situation right now. The dmesg I'm attaching is without >> the computer being docked. > > It's not possible to determine the reason for the timeout errors > between timestamps 16 and 53 from the small amount of debugging > information in the log. ?Clearly something is going wrong with the > communication between the computer and the EHCI controller. ?And > clearly the kernel config changes are responsible. > > But I don't know what to do to track it down any farther. > > Alan Stern > > I guess this is pretty much a dead end until anyone else can reproduce it! I'll continue to use Daniel's patches privately. Daniel, should I use the big initial patch or the GFP_DMA one? Which one is better for a system which is only rebooted every week or so (I usually hibernate)? Regards, Pedro -- 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/