linux-kernel - Re: [PATCH v3 00/25] irq_domain generalization and refinement

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Date:	Tue, 7 Feb 2012 15:26:27 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Tony Lindgren <tony@...mide.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	Rob Herring <rob.herring@...xeda.com>,
	Milton Miller <miltonm@....com>,
	Thomas Gleixner <tglx@...utronix.de>,
	linuxppc-dev@...ts.ozlabs.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 00/25] irq_domain generalization and refinement

On Sun, Feb 05, 2012 at 04:13:48PM +0000, Russell King - ARM Linux wrote:

> It's not quite correct, because OMAP4 has issues in this area as well
> (which does select IRQ_DOMAIN but can be without OF.)  The result is
> an oops from irq_domain_add() because domain->ops is NULL.

> The right solution is three fold:

> 1. Wrap the bits of code in CONFIG_IRQ_DOMAIN
> 2. Get rid of the #ifdef CONFIG_OF there, so the 'ops' member can be
>    initialized.
> 3. Fix the OMAP vp code not to oops when voltdm->pmic is NULL

> which I have in my combined patch for fixing OMAP so far.

It'd also help if we supported null ops, I sent patches for that a few
times over the 3.3 cycle since I was running into it on my systems but
apparently to /dev/null and further changes in this area have made the
patches not apply any more.
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