linux-kernel - RE: [Regression] 2.6.27-rc2-git4: suspend and power off fails on Asus M3A32-MVP

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Date:	Tue, 12 Aug 2008 11:03:54 -0500
From:	"Langsdorf, Mark" <mark.langsdorf@....com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Dave Jones" <davej@...hat.com>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	"LKML" <linux-kernel@...r.kernel.org>,
	<kernel-testers@...r.kernel.org>,
	"Randy Dunlap" <randy.dunlap@...cle.com>,
	"Arnold, Frank" <Frank.Arnold@....com>
Subject: RE: [Regression] 2.6.27-rc2-git4: suspend and power off fails on Asus M3A32-MVP


> Unfortunately, your commit 34ae7f35a21694aa5cb8829dc5142c39d73d6ba0
> ("[CPUFREQ][2/2] preregister support for powernow-k8") causes 
> a power off/
> suspend/ hibernation regression on my test box with the Asus M3A32-MVP
> mainboard (AMD 790 chipset) and the Phenom 9850 CPU.
> 
> Apparently, the patch causes a crash in a CPU hotplug 
> notifier to happen, but I'm not really sure of that, since there are a
lot of stack 
> traces resulting from it and I'm unable to capture them over a serial
console.
> 
> It is sufficient to revert commit 
> 34ae7f35a21694aa5cb8829dc5142c39d73d6ba0 to
> make things work again.

Thanks for the clear report.  I'll look into it and try to fix it.

-Mark Langsdorf
Operating System Research Center
AMD

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