linux-kernel - Re: [PATCH] ipmi: Fix ACPI detecting with regspacing

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Message-Id: <20100728122223.b753f586.akpm@linux-foundation.org>
Date:	Wed, 28 Jul 2010 12:22:23 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Bjorn Helgaas <bjorn.helgaas@...com>
Cc:	Yinghai Lu <yinghai@...nel.org>, Corey Minyard <minyard@....org>,
	Matthew Garrett <mjg@...hat.com>,
	Len Brown <len.brown@...el.com>,
	Myron Stowe <myron.stowe@...com>,
	openipmi-developer@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ipmi: Fix ACPI detecting with regspacing

On Tue, 27 Jul 2010 11:41:10 -0600
Bjorn Helgaas <bjorn.helgaas@...com> wrote:

> On Tuesday, July 27, 2010 11:28:28 am Yinghai Lu wrote:
> > On 07/27/2010 10:23 AM, Bjorn Helgaas wrote:
> > > On Tuesday, July 27, 2010 11:07:55 am Yinghai Lu wrote:
> > >> On 07/27/2010 08:34 AM, Bjorn Helgaas wrote:
> > >>> On Monday, July 26, 2010 03:48:02 pm Yinghai Lu wrote:
> > >>>>
> > >>>> after the commint that change ipmi_si detecting sequence from SMBIOS/ACPI to ACPI/SMBIOS,
> > >>>>
> > >>>> | commit 754d453185275951d39792865927ec494fa1ebd8
> > >>>> | Author: Matthew Garrett <mjg@...hat.com>
> > >>>> | Date:   Wed May 26 14:43:47 2010 -0700
> > >>>> |
> > >>>> |    ipmi: change device discovery order
> > >>>> |
> > >>>> |    The ipmi spec provides an ordering for si discovery.  Change the driver to
> > >>>> |    match, with the exception of preferring smbios to SPMI as HPs (at least)
> > >>>> |    contain accurate information in the former but not the latter.
> > >>>>
> > >>>> ipmi_si can not be initialized.
> > >>>
> > >>> I think this patch makes sense, as long as this is not a bringup
> > >>> issue that only affects pre-release firmware.  If this only affects
> > >>> a prototype, it would be better to change the firmware so it conforms
> > >>> to the conventional _CRS usage of systems in the field.
> > >>>
> > >>> To that end, I'd like to know what system this is, and whether IPMI
> > >>> works under Windows on this system.  We know that Windows doesn't
> > >>> look at SMBIOS or SPMI, so if Windows works, it must be doing something
> > >>> similar to your patch.
> > >>
> > >> Sun Fire X4800.
> > >>
> > >> Yes. other OSes work and pass certification.
> > > 
> > > Please put this information in the changelog (if that wasn't obvious).
> > 
> > I don't want to mention other os.
> 
> Sigh.  Why is this so difficult?

It wasn't for me ;)

Do we have acks for 2.6.36 and a -stable backport on this patch?

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