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Date:	Wed, 27 Jun 2007 12:41:41 -0400
From:	"H. Peter Anvin" <>
To:	Alan Cox <>
CC:	Matthew Wilcox <>,
	Matt Domsch <>,
	Randy Dunlap <>,
	lkml <>,,
Subject: Re: pci.h stubs

Alan Cox wrote:
> On Wed, 27 Jun 2007 05:30:48 -0600
> Matthew Wilcox <> wrote:
>> On Tue, Jun 26, 2007 at 09:45:05PM -0500, Matt Domsch wrote:
>>> On Tue, Jun 26, 2007 at 01:26:22PM -0700, Randy Dunlap wrote:
>>>> ERROR: "pci_get_bus_and_slot" [drivers/firmware/edd.ko] undefined!
>>> It should be stubbed, in include/linux/pci.h where all the other PCI
>>> functions are stubbed for the !CONFIG_PCI case.
>> pci_get_bus_and_slot() shouldn't be used because it fails to work on
>> systems with multiple domains.  pci_get_slot() avoids this problem (and
>> is much faster too).
> But requires you have a bus pointer to hand which is often not the
> case. Do we need pci_get_domain_bus_and_slot() ?

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.


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