linux-kernel - Re: [PATCH v3] of/irq: Get rid of NO

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Message-ID: <20111207095254.GA6436@pengutronix.de>
Date:	Wed, 7 Dec 2011 10:52:54 +0100
From:	Wolfram Sang <w.sang@...gutronix.de>
To:	Anton Vorontsov <anton.vorontsov@...aro.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Rob Herring <robherring2@...il.com>,
	Ingo Molnar <mingo@...e.hu>, Jeff Garzik <jgarzik@...hat.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	devicetree-discuss@...ts.ozlabs.org,
	LKML <linux-kernel@...r.kernel.org>, linux-ide@...r.kernel.org,
	Randy Dunlap <rdunlap@...otime.net>,
	linux-next@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: [PATCH v3] of/irq: Get rid of NO_IRQ usage

On Wed, Dec 07, 2011 at 03:16:26AM +0400, Anton Vorontsov wrote:
> PPC32/64 defines NO_IRQ to zero, so no problems expected.
> ARM defines NO_IRQ to -1, but OF code relies on IRQ domains support,
> which returns correct ('0') value in 'no irq' case. So everything
> should be fine.
> 
> Other arches might break if some of their OF drivers rely on NO_IRQ
> being not 0. If so, the drivers must be fixed, finally.
> 
> Signed-off-by: Anton Vorontsov <anton.vorontsov@...aro.org>
> ---

/me likes NO_IRQ removal very much

Acked-by: Wolfram Sang <w.sang@...gutronix.de>

-- 
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