linux-kernel - Re: [git pull] PCI changes

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Message-ID: <CA+55aFwDVEH1NwEgKCQSv9ee3P2ma1aqtjOo-s2BeURyeTGo8g@mail.gmail.com>
Date:	Wed, 11 Jan 2012 19:38:25 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Matthew Garrett <mjg@...hat.com>
Cc:	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [git pull] PCI changes

On Wed, Jan 11, 2012 at 10:34 AM, Jesse Barnes <jbarnes@...tuousgeek.org> wrote:
>
> Matthew Garrett (1):
>      PCI: Rework ASPM disable code

Yay.

However, looking this through some more, I'm still a bit confused by
the pcie_clear_aspm() call in acpi_pci_root_add().

It seems to be explicitly against the rules elsewhere - we clear ASPM
even though ACPI_FADT_NO_ASPM is set - which the changelog (and the
other parts of that commit) says means "don't touch pre-existing ASPM
state").

So why is acpi_pci_root_add() special? Cna you explain that part to me?

                    Linus
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