linux-kernel - Re: [PATCH] irq_domain/mips: Allow irq

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Message-ID: <4F5698EC.1080502@gmail.com>
Date:	Tue, 06 Mar 2012 15:08:28 -0800
From:	David Daney <ddaney.cavm@...il.com>
To:	Ralf Baechle <ralf@...ux-mips.org>
CC:	Grant Likely <grant.likely@...retlab.ca>,
	linux-kernel@...r.kernel.org,
	Rob Herring <rob.herring@...xeda.com>,
	Thomas Gleixner <tglx@...utronix.de>, linux-mips@...ux-mips.org
Subject: Re: [PATCH] irq_domain/mips: Allow irq_domain on MIPS

On 03/06/2012 11:57 AM, Ralf Baechle wrote:
> On Fri, Feb 24, 2012 at 09:29:55AM -0700, Grant Likely wrote:
>
>> This patch makes IRQ_DOMAIN usable on MIPS.  It uses an ugly workaround
>> to preserve current behaviour so that MIPS has time to add irq_domain
>> registration to the irq controller drivers.  The workaround will be
>> removed in Linux v3.6
>
> Looking good, Ack.
>
> Is there any good example for the changes that need to be done to
> irq controller drivers?
>

Well it only affects things that have USE_OF, so most mips things will 
not need to do anything as they don't USE_OF.

But for those that do USE_OF, you have to call one or more of the 
irq_domain_add_*() functions.

Slightly off topic:  My OCTEON patch set tries to do this, but hasn't 
met with quite as much enthusiasm as I would have liked...

David Daney

> Thanks,
>
>    Ralf
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