linux-kernel - Re: [PATCH 04/12] irqchip: nvic: support routable irq domain ops

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Date:	Wed, 03 Dec 2014 18:32:22 +0100
From:	Stefan Agner <stefan@...er.ch>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	shawn.guo@...aro.org, kernel@...gutronix.de,
	linux@....linux.org.uk, u.kleine-koenig@...gutronix.de,
	jason@...edaemon.net, olof@...om.net, daniel.lezcano@...aro.org,
	tglx@...utronix.de, mark.rutland@....com, pawel.moll@....com,
	robh+dt@...nel.org, ijc+devicetree@...lion.org.uk,
	galak@...eaurora.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 04/12] irqchip: nvic: support routable irq domain ops

On 2014-12-03 11:49, Arnd Bergmann wrote:
> On Wednesday 03 December 2014 01:12:03 Stefan Agner wrote:
>> +#ifdef CONFIG_ARM_NVIC
>> +extern const struct irq_domain_ops *nvic_routable_irq_domain_ops;
>> +static inline void __init register_routable_domain_ops
>> +                                       (const struct irq_domain_ops *ops)
>> +{
>> +               nvic_routable_irq_domain_ops = ops;
>> +}
>> +#endif /* CONFIG_ARM_NVIC */
>>
> 
> As you mentioned, this conflicts with the gic specific declaration.
> Why not remove the #ifdef here and rename the function to
> nvic_register_routable_domain_ops() ?
> 
> If that doesn't work, I guess we need something more generic
> and move the routable_irq_domain_ops to some common location.
> 

This would move the ifdef to the MSCM driver code. I thought of having a
generic function to call, no matter what base IRQ chip is used.

Anyway, as tglx suggested in patch 3/12, I will try to use the IRQ
domain hierarchy stuff...

--
Stefan


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