linux-kernel - Re: [PATCH v5 06/27] irq_domain/powerpc: eliminate irq_map; use irq_alloc

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Date:	Tue, 03 Apr 2012 08:33:25 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	Andreas Schwab <schwab@...ux-m68k.org>,
	devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	Milton Miller <miltonm@....com>,
	Rob Herring <rob.herring@...xeda.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	linuxppc-dev@...ts.ozlabs.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v5 06/27] irq_domain/powerpc: eliminate irq_map; use
 irq_alloc_desc() instead

On Mon, 2012-04-02 at 22:55 +0100, Russell King - ARM Linux wrote:
> Well, presumably someone is calling irq_set_irq_type() asking explicitly
> for IRQ_TYPE_NONE.  The code will now (as it always used to before David's
> change) do exactly what you ask this to: it will ask the type to be set
> to none.
> 
> If you don't want to set the type to none, don't call the interface asking
> for that to happen. 

I think part of the idea with NONE is to use it as "reset that interrupt
to the "default" setting, whatever that means ...

Cheers,
Ben.


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