linux-kernel - Re: [PATCH] Add DMI quirk for Intel DP55KG mainboard

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Message-id: <alpine.LFD.2.00.1001200003520.4265@localhost.localdomain>
Date:	Wed, 20 Jan 2010 00:06:49 -0500 (EST)
From:	Len Brown <lenb@...nel.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Matthew Garrett <mjg59@...f.ucam.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Christian Hofstaedtler <ch@...a.at>, x86@...nel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	bruce.w.allan@...el.com, Thomas Gleixner <tglx@...utronix.de>,
	Justin Piszcz <jpiszcz@...idpixels.com>,
	linux-acpi@...r.kernel.org,
	Venkatesh Pallipadi <venkatesh.pallipadi@...el.com>
Subject: Re: [PATCH] Add DMI quirk for Intel DP55KG mainboard

> What about using _OSI() with a *blacklist*, i.e. treat _OSI("Unknown
> String") as "new enough", whereas _OSI("Windows 2000") is ignored?

Sound reasoning, but I think that parsing the _OSI strings presented
by the BIOS so that the OS can deving whether it is a Windows XP
box or newer is more complicated than this problem merits.

I recommend that we compare DMI date with 2003 and go from there.
If we find that doesn't work, we can apply additional cleverness.

-Len Brown
Intel Open Source Technology Center

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