linux-kernel - Re: PCI Failed to allocate mem for PCI ROM

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Message-ID: <20080111174909.GA7916@kroah.com>
Date:	Fri, 11 Jan 2008 09:49:09 -0800
From:	Greg KH <greg@...ah.com>
To:	Jiri Slaby <jirislaby@...il.com>
Cc:	Kumar Gala <galak@...nel.crashing.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linuxppc-dev list <linuxppc-dev@...abs.org>,
	linux-pci@...ey.karlin.mff.cuni.cz
Subject: Re: PCI Failed to allocate mem for PCI ROM

On Fri, Jan 11, 2008 at 10:13:23AM +0100, Jiri Slaby wrote:
> On 01/11/2008 10:07 AM, Kumar Gala wrote:
>> On Jan 11, 2008, at 2:41 AM, Jiri Slaby wrote:
>>> On 01/11/2008 09:29 AM, Kumar Gala wrote:
>>>> Greg,
>>>> I'm getting the following message from the kernel on an embedded ppc32 
>>>> system:
>>>> PCI: Failed to allocate mem resource #9:100000@...00000 for 0000:00:00.0
>>>> The HW setup is a PCIe host controller and an e1000 NIC card.  It 
>>>> appears that pci_bus_assign_resources() is trying to call 
>>>> pci_assign_resource() for the ROM and the resource for the ROM is 
>>>> [100000:1fffff] where the PHB is [c0000000:dfffffff].
>>>> It seems like the resno that pci_assign_resource is getting called with 
>>>> is wrong and thus pci_update_resource() doesn't get called.
>>>> any ideas?
>>>
>>> Kernel version, please.
>> Sorry, its 2.6.24-rc7 + some ppc patches queued for 2.6.25
>
> Could you try this patch?
> http://git.kernel.org/?p=linux/kernel/git/gregkh/patches.git;a=blob_plain;f=pci/pci-remove-default-pci-expansion-rom-memory-allocation.patch
>
> Greg: is this 2.6.25 material, please? We need this for SP2.

Yes, this is queued up for 2.6.25, and I have no objection to adding it
for SLE10 SP2 if needed.  But I think there is another patch in the
series that also goes with this, ask IBM, they know what is needed here.

thanks,

greg k-h
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