linux-kernel - Re: Regression in ACPI in 2.6.31-rc5

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Date:	Sun, 16 Aug 2009 04:00:03 +0100
From:	Ricardo Jorge da Fonseca Marques Ferreira <storm@...49152.net>
To:	Len Brown <lenb@...nel.org>
Cc:	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: Regression in ACPI in 2.6.31-rc5

On Thursday 13 August 2009, Len Brown wrote:
> > I had two drivers stop working in 2.6.31 that were working fine in
> > 2.6.30. They are iwlagn and sky2. If i pass acpi=off to the kernel, they
> > work as expected.
>
> the bug report for this issue is here:
> http://bugzilla.kernel.org/show_bug.cgi?id=13940
>
> is it possible to bisect which commit between 2.6.30 and 2.6.31-rc5
> caused this regression?

git bisect tells me that commit 5d423ccd7ba4285f1084e91b26805e1d0ae978ed 
(x86/pci: remove rounding quirk from e820_setup_gap()) caused the problem.

I built a kernel based on HEAD with that commit reverted and both drivers 
work.

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