linux-kernel - Re: pci.h stubs

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Message-ID: <4682AD9B.9060105@zytor.com>
Date:	Wed, 27 Jun 2007 14:34:03 -0400
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Matthew Wilcox <matthew@....cx>,
	Matt Domsch <Matt_Domsch@...l.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	lkml <linux-kernel@...r.kernel.org>, gregkh@...e.de,
	linux-pci@...ey.karlin.mff.cuni.cz
Subject: Re: pci.h stubs

Alan Cox wrote:
> On Wed, 27 Jun 2007 10:54:30 -0600
> Matthew Wilcox <matthew@....cx> wrote:
> 
>> On Wed, Jun 27, 2007 at 12:41:41PM -0400, H. Peter Anvin wrote:
>>> Note that EDD has no way of referencing anything but the zero domain 
>>> (which is presumably the one which is addressed by I/O ports CF8/CFC on 
>>> the BSP.)  So in this particular case I would say pci_get_bus_and_slot() 
>>> is fine.
>> Except that you're not guaranteed to get the bus that's in domain zero.
> 
> Which is trivial to fix

Yes, and that's probably the only sane definition of that API.

	-hpa
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