Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758754AbZGCWy2 (ORCPT ); Fri, 3 Jul 2009 18:54:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755974AbZGCWyU (ORCPT ); Fri, 3 Jul 2009 18:54:20 -0400 Received: from complete.lackof.org ([198.49.126.79]:32839 "EHLO complete.lackof.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755812AbZGCWyU (ORCPT ); Fri, 3 Jul 2009 18:54:20 -0400 Date: Fri, 3 Jul 2009 16:54:22 -0600 From: dann frazier To: Stephen Frost Cc: Yinghai Lu , Alex Chiang , linux-kernel@vger.kernel.org, David Altobelli , nagananda.chumbalkar@hp.com Subject: Re: ACPI issues on HP DL585 G2 Message-ID: <20090703225422.GB18235@lackof.org> References: <20090628172052.GA13957@ldl.fc.hp.com> <20090628223258.GP20436@tamriel.snowman.net> <20090630011541.GL22480@ldl.fc.hp.com> <20090630011709.GT20436@tamriel.snowman.net> <86802c440906291847p302d47eau1d1cbd07be59c61@mail.gmail.com> <20090630015140.GV20436@tamriel.snowman.net> <20090630015302.GN22480@ldl.fc.hp.com> <20090630020644.GW20436@tamriel.snowman.net> <20090630193050.GA9496@lackof.org> <20090701013504.GE20436@tamriel.snowman.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090701013504.GE20436@tamriel.snowman.net> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1520 Lines: 39 On Tue, Jun 30, 2009 at 09:35:04PM -0400, Stephen Frost wrote: > * dann frazier (dannf@dannf.org) wrote: > > On Mon, Jun 29, 2009 at 10:06:44PM -0400, Stephen Frost wrote: > > > Don't suppose you can grab a P600 from somewhere and try? > > > > Got one, and I am able to reproduce a hang while initializing > > cciss. I'll try narrowing down the issue. > > Great! Glad to hear it. If there's anything I can do to help, please > let me know. Here's what I've found. Bisecting the hang lands on this commit, which went in right before 2.6.26 went final: 77b96bd: cciss: fix regression that no device nodes are created if no logical drives This seems to have caused problems for 2.6.26 era kernels (including Debian's current stable release). I'm not sure if this problem still exists in 2.6.31-rc1, because I think we are hitting an earlier issue which also manifests as a hang. In 2.6.31-rc1, I see a hang while trying to request the firmware version using sendcmd_withirq(). If I switch this to a sendcmd(), it proceeds until the next sendcmd_withirq(). /proc/interrupts shows a 0 count for all cpus on the chosen IRQ line (26). This makes me wonder if its related to the issue: http://www.spinics.net/lists/linux-scsi/msg37177.html -- dann frazier -- 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/