linux-kernel - Re: [PATCH v2 00/29] Create PCI root buses with correct resources

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Message-ID: <CAErSpo7d3hHeJU87zYo=yJoG3eqOZ4QggkOyNnu7xuJe8oG9Qg@mail.gmail.com>
Date:	Fri, 14 Oct 2011 09:33:28 -0600
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	James Bottomley <James.Bottomley@...senpartnership.com>
Cc:	linux-pci@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 00/29] Create PCI root buses with correct resources

On Fri, Oct 14, 2011 at 9:14 AM, James Bottomley
<James.Bottomley@...senpartnership.com> wrote:
> On Thu, 2011-10-13 at 22:27 -0600, Bjorn Helgaas wrote:
>> The most generic way to create a PCI root bus is with pci_scan_bus(), but
>> that doesn't allow you to specify what resources are available on the bus,
>> i.e., what the host bridge apertures are.
>
> Do you have an actual tree for this?  The PARISC pieces look a bit
> non-trivial and I'd like to test them out on the various sba/astro/dino
> systems.

I don't yet, but it'd be great if you were willing to test them out,
so I'll set one up.

While this is on your mind, I'm dubious about the pci_enable_bridges()
call in lba_driver_probe() and the pci_bus_assign_resources() call in
dino_probe().  These stand out as exceptions because no other arches
do that.

If they weren't there, both places could use pci_scan_root_bus() like
most other arches.

Bjorn
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