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Date: Fri, 27 Jul 2012 11:37:22 -0500
From: Scott Wood <scottwood@freescale.com>
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To: Jia Hongtao-B38951 <B38951@freescale.com>
Subject: Re: [PATCH 3/6] powerpc/fsl-pci: Determine primary bus by looking
 for ISA node
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Cc: Wood Scott-B07421 <B07421@freescale.com>,
 "linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
 Li Yang-R58472 <r58472@freescale.com>
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On 07/26/2012 09:07 PM, Jia Hongtao-B38951 wrote:
> 
> 
>> -----Original Message-----
>> From: Wood Scott-B07421
>> Sent: Friday, July 27, 2012 9:34 AM
>> To: Jia Hongtao-B38951
>> Cc: Wood Scott-B07421; linuxppc-dev@lists.ozlabs.org;
>> galak@kernel.crashing.org; Li Yang-R58472
>> Subject: Re: [PATCH 3/6] powerpc/fsl-pci: Determine primary bus by
>> looking for ISA node
>>
>> On 07/25/2012 09:20 PM, Jia Hongtao-B38951 wrote:
>>> All this recursion thing I will try another way.
>>>
>>> But this is not the same as you did. If we use platform driver probe
>> function
>>> will be called more than once. Your function is to find ISA node and
>> check if
>>> the parent equal to this PCI controller. My function is to search ISA
>> under
>>> each PCI controller.
>>
>> The result is the same -- "does this PCI controller have an ISA node
>> under it?"
>>
>> -Scott
> 
> 
> The result is the same but as I said in platform driver probe function will
> be called for each PCI controller.

So?  Just because you've got a platform device now doesn't mean you
can't do any early global init.  This has to be done globally, so we can
choose a fallback primary bus if there's no ISA in the system.

-Scott