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Date: Thu, 20 Sep 2007 13:16:29 -0500
From: Timur Tabi <timur@freescale.com>
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Subject: Re: [PATCH] [POWERPC] Fix QEIC->MPIC cascading
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Anton Vorontsov wrote:

> I don't know (didn't look) why this works for 83xx w/o ack()...
> maybe IPIC don't need this. Or maybe there is a bug hiding.

Scott W told me that me that the IPIC doesn't have the concept of EOI ack.  It 
just has IRQ masks.

-- 
Timur Tabi
Linux Kernel Developer @ Freescale