linux-kernel - Re: [PATCH] ACPI: Make sure the FADT is at least rev 2 before using the reset register

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Message-ID: <20101213002138.GA5164@srcf.ucam.org>
Date:	Mon, 13 Dec 2010 00:21:38 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Zhang Rui <rui.zhang@...el.com>
Cc:	"x86@...nel.org" <x86@...nel.org>, "hpa@...or.com" <hpa@...or.com>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"lenb@...nel.org" <lenb@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ACPI: Make sure the FADT is at least rev 2 before
	using the reset register

On Mon, Dec 13, 2010 at 08:16:36AM +0800, Zhang Rui wrote:
> On Sat, 2010-12-11 at 01:57 +0800, Matthew Garrett wrote:
> > The reset register was only introduced with version 2 of the FADT, so we
> > should check that the FADT revision before trusting its contents.
> > 
> does the current code break anything?
> I'm curious about how you found this bug. :)

No, it just seems to be a sensible sanity check.
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