linux-kernel - Re: [PATCH 05/21] resource: adjust_resource handle resource without parent

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Message-ID: <CAE9FiQUebVR_AdhQVE_Hq-RhB7h5AfH0Z20WaZh=ky5vHEt5BQ@mail.gmail.com>
Date:	Fri, 18 May 2012 10:54:36 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
Cc:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Tony Luck <tony.luck@...el.com>,
	David Miller <davem@...emloft.net>, x86 <x86@...nel.org>,
	Dominik Brodowski <linux@...inikbrodowski.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH 05/21] resource: adjust_resource handle resource without parent

On Fri, May 18, 2012 at 10:12 AM, Bjorn Helgaas <bhelgaas@...gle.com> wrote:
> On Mon, May 7, 2012 at 2:29 PM, Yinghai Lu <yinghai@...nel.org> wrote:

> Where does this case occur?  When do you need to adjust a resource
> that has no parent?

for unassigned pci bridge from BIOS, before scan busn_res.end is 0xff,
so you can not insert them, because the bridge could in the middle.
Have to update the busn_res.end and insert after the bridge is scanned

Yinghai
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