From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Jeff Garzik <jeff@garzik.org>
Subject: Re: Linux 2.6.27-rc5: System boot regression caused by commit a2bd7274b47124d2fc4dfdb8c0591f545ba749dd
Date: Sat, 30 Aug 2008 00:47:56 +0200
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Cc: Linus Torvalds <torvalds@linux-foundation.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Tejun Heo <htejun@gmail.com>, Ingo Molnar <mingo@elte.hu>,
       Yinghai Lu <yhlu.kernel@gmail.com>,
       David Witbrodt <dawitbro@sbcglobal.net>,
       Andrew Morton <akpm@linux-foundation.org>,
       Kernel Testers <kernel-testers@vger.kernel.org>
References: <alpine.LFD.1.10.0808281555230.3300@nehalem.linux-foundation.org> <200808292157.24179.rjw@sisk.pl> <48B87960.706@garzik.org>
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On Saturday, 30 of August 2008, Jeff Garzik wrote:
> Rafael J. Wysocki wrote:
> > Bisection turned up commit a2bd7274b47124d2fc4dfdb8c0591f545ba749dd as the culprit:
> > 
> > commit a2bd7274b47124d2fc4dfdb8c0591f545ba749dd
> > Author: Yinghai Lu <yhlu.kernel@gmail.com>
> > Date:   Mon Aug 25 00:56:08 2008 -0700
> > 
> >     x86: fix HPET regression in 2.6.26 versus 2.6.25, check hpet against BAR, v3
> > 
> > Reverting this commit helps.
> > 
> > The symptom is that AHCI probe fails with this commit applied.
> 
> 
> Just to be sure...  Does "helps" imply that unresolved AHCI behavior 
> exists after reverting that commit?

No, after reverting this commit AHCI works normally.

Thanks,
Rafael
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