linux-kernel - Re: Commit 07f9b61 breaks systems that don't implement a

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Date:	Fri, 4 Oct 2013 16:55:56 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
Cc:	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ethan Zhao <ethan.zhao@...cle.com>
Subject: Re: Commit 07f9b61 breaks systems that don't implement a _CBA method

On Fri, Oct 4, 2013 at 3:11 PM, Bjorn Helgaas <bhelgaas@...gle.com> wrote:
> On Thu, Oct 3, 2013 at 7:18 PM, Hedi Berriche <hedi@....com> wrote:

> It's regrettable that the code is so subtle.  The obvious thing to do
> would be to check for _CBA, and if it doesn't exist, look for an MCFG
> entry.  But for various historical reasons, the code is a mess, and we
> haven't figured out how to safely simplify it.
>
> Ethan, Yinghai, any objections to reverting 07f9b61?

yes, that is right solution.
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