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

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Message-Id: <200808092321.16711.rjw@sisk.pl>
Date:	Sat, 9 Aug 2008 23:21:15 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Mark Langsdorf <mark.langsdorf@....com>
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>,
	Frank Arnold <frank.arnold@....com>
Subject: [Regression] 2.6.27-rc2-git4: suspend and power off fails on Asus M3A32-MVP

Hi Mark,

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.

Please advise.

Thanks,
Rafael
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