linux-kernel - Re: [Patch] Fix the possibility of insane return value of hpet

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Message-ID: <49C0A65E.2000101@ladisch.de>
Date:	Wed, 18 Mar 2009 08:44:30 +0100
From:	Clemens Ladisch <clemens@...isch.de>
To:	Yasunori Goto <y-goto@...fujitsu.com>
CC:	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Linux Kernel ML <linux-kernel@...r.kernel.org>,
	robert.picco@...com, venkatesh.pallipadi@...el.com,
	vojtech@...e.cz, mingo@...hat.com,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [Patch] Fix the possibility of insane return value of hpet_calibrate()
 against SMI. (take 2)

Yasunori Goto wrote:
> hpet_calibrate() has a possibility of miss-calibration due to SMI.
> If SMI interrupts in the while loop of calibration, then return value
> will be big. This change calibrates until stabilizing by the return
> value with a small value.
> 
> Signed-off-by: Yasunori Goto <y-goto@...fujitsu.com>

Acked-by: Clemens Ladisch <clemens@...isch.de>

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