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Date:	Fri, 1 Sep 2006 12:56:48 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	"Bjorn Helgaas" <bjorn.helgaas@...com>
Cc:	kmannth@...ibm.com, bjorn.helgaas@...com, lenb@...nel.org,
	robert.moore@...el.com, shaohua.li@...el.com, malattia@...ux.it,
	akpm@...l.org, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: Re: one more ACPI Error (utglobal-0125): Unknown exception code: 
 0xFFFFFFEA [Re: 2.6.18-rc4-mm3]

On Thu, 31 Aug 2006 21:15:55 -0600 (MDT)
"Bjorn Helgaas" <bjorn.helgaas@...com> wrote:

> Ok, this is starting to make sense.  It sounds like your memory
> device has _HID of PNP0C80 and _CID of PNP0C01 (or PNP0C02).
> 
> The current ACPI driver binding algorithm in acpi_bus_find_driver()
> looks at each driver, checking whether it can match either the _HID
> or the _CID of a device.  Since we try the motherboard driver first,
> it matches the memory device _CID.
> 
> I couldn't find a specific reference in the spec, but this seems
> intuitively sub-optimal.  It seems like it'd be better to look
> first for a driver that can claim the _HID (which is more specific),
> and only fall back to checking the _CIDs if no _HID-specific driver
> is found.
> 
I like it :)

-Kame

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