linux-kernel - Re: [PATCH 2/3] MFD: twl6040: Allocate IRQ numbers dynamically

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Message-ID: <20120503132004.GB14296@sirena.org.uk>
Date:	Thu, 3 May 2012 14:20:05 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Peter Ujfalusi <peter.ujfalusi@...com>
Cc:	Samuel Ortiz <sameo@...ux.intel.com>, linux-kernel@...r.kernel.org,
	Misael Lopez Cruz <misael.lopez@...com>,
	Benoit Cousson <b-cousson@...com>,
	devicetree-discuss@...ts.ozlabs.org, Liam Girdwood <lrg@...com>
Subject: Re: [PATCH 2/3] MFD: twl6040: Allocate IRQ numbers dynamically

On Thu, May 03, 2012 at 03:54:24PM +0300, Peter Ujfalusi wrote:

>  	/* In order to operate correctly we need valid interrupt config */
> -	if (!client->irq || !pdata->irq_base) {
> +	if (!client->irq) {

It looks like you're totally removing the use of irq_base which will
break any boards that didn't convert to DT.  The usual idiom is to use
irq_base as the base for the range of requested IRQs if it's supplied,
otherwise set it to -1 to allow dynamic allocation.  This should keep
existing users working without disruption.
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