linux-kernel - Re: [PATCH 2.6.34-rc4 1/8] mx5: Add registration of GPIOs for MX51 Babbage board.

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Date:	Wed, 14 Apr 2010 09:31:38 +0200
From:	Daniel Mack <daniel@...aq.de>
To:	Sascha Hauer <s.hauer@...gutronix.de>
Cc:	Nguyen Dinh-R00091 <R00091@...escale.com>,
	linux-kernel@...r.kernel.org, amit.kucheria@...onical.com,
	linux@....linux.org.uk, grant.likely@...retlab.ca,
	Herring Robert-RA7055 <RA7055@...escale.com>,
	linux-arm-kernel@...ts.infradead.org, bryan.wu@...onical.com,
	valentin.longchamp@...l.ch
Subject: Re: [PATCH 2.6.34-rc4 1/8] mx5: Add registration of GPIOs for MX51
 Babbage board.

On Wed, Apr 14, 2010 at 08:51:31AM +0200, Sascha Hauer wrote:
> On Tue, Apr 13, 2010 at 12:36:07PM -0700, Nguyen Dinh-R00091 wrote:
> > > +
> > > +#ifdef MXC_GPIO_SPLIT_IRQ_2
> > 
> > Where is that macro defined?
> > [Dinh-FSL] - This macro is optional so that the interrupts can be broken
> > up into 2 sets.
> 
> What's the purpose of doing so?
> 
> Such compile time depencies are not a good idea since the board may want
> to decide whether to split the interrupts or not. Note that we support
> kernels for more than one board.

And I would have expected at least one active user. As it stands, it's
just dead code.

Daniel
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