linux-kernel - Re: one more ACPI Error (utglobal-0125): Unknown exception code:0xFFFFFFEA [Re: 2.6.18-rc4-mm3]

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Message-ID: <4132.24.9.204.52.1157682479.squirrel@mail.cce.hp.com>
Date:	Thu, 7 Sep 2006 20:27:59 -0600 (MDT)
From:	"Bjorn Helgaas" <bjorn.helgaas@...com>
To:	"Shaohua Li" <shaohua.li@...el.com>
Cc:	"Bjorn Helgaas" <bjorn.helgaas@...com>, kmannth@...ibm.com,
	"Moore, Robert" <robert.moore@...el.com>,
	"Len Brown" <lenb@...nel.org>,
	"Mattia Dongili" <malattia@...ux.it>,
	"Andrew Morton" <akpm@...l.org>,
	"lkml" <linux-kernel@...r.kernel.org>,
	"linux acpi" <linux-acpi@...r.kernel.org>,
	"KAMEZAWA Hiroyuki" <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: one more ACPI Error (utglobal-0125): Unknown exception 
     code:0xFFFFFFEA [Re: 2.6.18-rc4-mm3]

> On Thu, 2006-09-07 at 09:25 -0600, Bjorn Helgaas wrote:
>> If we decide that "try HID first, then try CID" is the right thing,
>> I think we should figure out how to make that work.  Maybe that
>> means extending the driver model somehow.
> Don't think it's easy, especially no other bus needs it I guess.

I agree it's probably not easy, but I think having the right
semantics is more important than fitting cleanly into the
driver model.  But I know that without code, I'm just venting
hot air, not contributing to a solution.

How's the ACPI driver model integration going, anyway?  I seem
to recall some patches a while back, but I don't think they're
in the tree yet.

> Do we really need the memory hotplug device returns pnp0c01/pnp0c02?
> What's the purpose?

I don't know.  But I think Keith already determined that a BIOS change
is not likely.  I hate to ask for BIOS changes like this because it
feels like asking them to avoid broken things in Linux.

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