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Message-ID: <4654DA5E.2050003@gmail.com>
Date:	Wed, 23 May 2007 17:20:46 -0700
From:	Wayne Sherman <wsherman@...il.com>
To:	Ivan Kokshaysky <ink@...assic.park.msu.ru>
CC:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	linux-kernel@...r.kernel.org
Subject: Re: PCI device problem - MMCONFIG, cannot allocate resource region,
 resource collisions

Ivan Kokshaysky wrote:
> No, it won't help. The 1M range (ff500000-ff5fffff) is more than enough.

Good catch, I didn't look close enough at the allocations of the devices 
under the bridge.

> The reason why the D-Link resource is not getting assigned is rather
> interesting: as Wayne wrote
> 
>> Here is the D-LINK NIC:
>> # od -t x4 /sys/devices/pci0000:00/0000:00:14.4/0000:02:02.0/config
>>
>> 0000000 49011186 80b00117 00000011 00004010
> 			    ^^^^^^
> which means that the device class is 0 (not defined).
> And in drivers/pci/setup-bus.c we have
> 
> 		/* Don't touch classless devices or host bridges or ioapics.  */
> 		if (class == PCI_CLASS_NOT_DEFINED ||
> 		    class == PCI_CLASS_BRIDGE_HOST)
> 			continue;
> 
> The short term fix would be to assign proper device class to D-Link NIC
> using pci quirk...

I would like to try this, where do I find "pci quirk"?

Thanks,

Wayne



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