linux-kernel - Re: [PATCH v2] PCI: Disable ASPM if BIOS asks us to

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Message-ID: <20101210130719.6ef6cd3d@jbarnes-desktop>
Date:	Fri, 10 Dec 2010 13:07:19 -0800
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Matthew Garrett <mjg@...hat.com>
Cc:	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] PCI: Disable ASPM if BIOS asks us to

On Mon,  6 Dec 2010 14:00:56 -0500
Matthew Garrett <mjg@...hat.com> wrote:

> We currently refuse to touch the ASPM registers if the BIOS tells us that
> ASPM isn't supported. This can cause problems if the BIOS has (for any
> reason) enabled ASPM on some devices anyway. Change the code such that we
> explicitly clear ASPM if the FADT indicates that ASPM isn't supported,
> and make sure we tidy up appropriately on device removal in order to deal
> with the hotplug case. If ASPM is disabled because the BIOS doesn't hand
> over control then we won't touch the registers.
> 
> Signed-off-by: Matthew Garrett <mjg@...hat.com>
> ---
> 

Applied to linux-next, thanks.

-- 
Jesse Barnes, Intel Open Source Technology Center
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