linux-kernel - Re: [PATCH v8 02/22] PCI: Add root bus children dev's res to fail list

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Date:	Mon, 14 Jan 2013 22:23:47 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>, Len Brown <lenb@...nel.org>,
	Taku Izumi <izumi.taku@...fujitsu.com>,
	Jiang Liu <jiang.liu@...wei.com>, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [PATCH v8 02/22] PCI: Add root bus children dev's res to fail list

On Sat, Jan 12, 2013 at 1:37 PM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> On Friday, January 11, 2013 02:40:29 PM Yinghai Lu wrote:
>> We can stop trying according to try number now and do not need to use
>> root_bus checking as stop sign anymore.
>>
>> In extreme case we could need to reallocate resource for device just
>> under root bus.
>
> Well, the above says that we _can_ do the change, but it doesn't explain why it
> is needed.  So what's the reason why we need to do that?

In extreme case we could need to reallocate resource for device just
under root bus.

otherwise, those devices just under root bus will not be assigned
resources again.
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