linux-kernel - Re: [PATCH 4/4] pci: remove min

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Message-ID: <m163a1kxak.fsf@fess.ebiederm.org>
Date:	Tue, 27 Oct 2009 02:20:51 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Alex Chiang <achiang@...com>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-pci\@vger.kernel.org" <linux-pci@...r.kernel.org>,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>,
	Bjorn Helgaas <bjorn.helgaas@...com>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH 4/4] pci: remove  min_size for hotplug bridge

Yinghai Lu <yinghai@...nel.org> writes:

> revert
>
> | commit 28760489a3f1e136c5ae8581c0fa8f63511f2f4c
> | Author: Eric W. Biederman <ebiederm@...stanetworks.com>
> | Date:   Wed Sep 9 14:09:24 2009 -0700
> |
> |    PCI: pcie: Ensure hotplug ports have a minimum number of resources
>
> we don't need this trick anymore. the bridge BAR will be updated automatically

How so?  We can't reassign resources after they have been allocated as someone
might be using them.  If the firmware doesn't reserve the resource for a hotplug
we need to do it ourselves.


Eric
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