From mboxrd@z Thu Jan 1 00:00:00 1970 From: Prarit Bhargava Subject: Re: (fwd) Re: Bug#289770: kernel-image-2.6.10-1-686: 2.6.10 fails to set up DMA on my IBM thinkpad Date: Wed, 12 Jan 2005 08:46:32 -0500 Message-ID: <41E52A38.9060108@sgi.com> References: <20050111195345.GI2618@stro.at> <20050112120245.GA24839@kantaka.co.uk> <200501121352.33520.bzolnier@elka.pw.edu.pl> <20050112133524.GA27287@kantaka.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mx1.redhat.com ([66.187.233.31]:53726 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S261180AbVALNq7 (ORCPT ); Wed, 12 Jan 2005 08:46:59 -0500 In-Reply-To: <20050112133524.GA27287@kantaka.co.uk> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Philip Armstrong Cc: Bartlomiej Zolnierkiewicz , maximilian attems , linux-ide@vger.kernel.org, 289770@bugs.debian.org Philip and Bartlomiej, I've been tracking an almost identical problem on my IA64 platform with a bk pull that is about a month old. I tracked it down to a duplicate vector request of 0x38 = 56 by the mmtimer -- take a look at /proc/interrupts, /proc/ioports, /proc/iomem and see if anything has requested the specific area that your CD is trying to get. My output looked like: SGIIOC4: IDE controller at PCI slot 0000:01:01.0, revision 79 ide0: BM-DMA at 0xc00001080c200140-0xc00001080c200163 Probing IDE interface ide0... hda: MATSHITADVD-ROM SR-8588, ATAPI CD/DVD-ROM drive ide0: Disabled unable to get IRQ 56. Probing IDE interface ide0... hda: MATSHITADVD-ROM SR-8588, ATAPI CD/DVD-ROM drive hda: IRQ probe failed (0x4ffffffe) Probing IDE interface ide1... ide1: Wait for ready failed before probe ! Probing IDE interface ide2... ide2: Wait for ready failed before probe ! Probing IDE interface ide3... ide3: Wait for ready failed before probe ! Probing IDE interface ide4... ide4: Wait for ready failed before probe ! Probing IDE interface ide5... ide5: Wait for ready failed before probe ! ide0: DISABLED, NO IRQ Bartlomiej, just a thought: I think that the output of the failures of the probes for non-existant interfaces ide1-ide5 could be suppressed, no? What would you think if we only output the "failed before probe" messages for interfaces that return -EBUSY from wait_hwif_ready? It would make the system boot a lot "prettier":) P. > >Does the kernel know what the 'something' is? Should I be routing >around in /proc looking for something specific? > >cheers, > >Phil > > >