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Message-Id: <1262885241.27762.1.camel@dax.rpnet.com>
Date: Thu, 07 Jan 2010 17:27:21 +0000
From: Richard Purdie <rpurdie@...ys.net>
To: Arnd Hannemann <hannemann@...s.rwth-aachen.de>
Cc: Daniel Mack <daniel@...aq.de>,
Arnd Hannemann <Arnd.Hannemann@...s.rwth-aachen.de>,
LKML <linux-kernel@...r.kernel.org>,
"linux-geode@...ts.infradead.org" <linux-geode@...ts.infradead.org>
Subject: Re: 2.6.33-rc3 regression: leds_alix2: can't allocate I/O for GPIO
On Thu, 2010-01-07 at 15:00 +0100, Arnd Hannemann wrote:
> Daniel Mack schrieb:
> > On Thu, Jan 07, 2010 at 01:11:31PM +0100, Arnd Hannemann wrote:
> >> Arnd Hannemann schrieb:
> >> Oh, maybe using cs5535_gpio AND leds_alix2 together was never supposed to work?
> >
> > That is the problem indeed. The problem is that three of these GPIOs are
> > connected to LEDs, so if both drivers are enabled, they will both alter
> > the same GPIOs. Hmm, don't know how to handle this. Maybe the LED driver
> > should use the GPIO interface and that's it?
>
> I'm not sure that this configuration needs to be supported at all,
> so disallowing that both drivers are configured via Kconfig could be a simple solution.
Agreed, Kconfig dependencies for this until the code is improved look
like the best option. Does someone want to send me a patch?
Cheers,
Richard
--
Richard Purdie
Intel Open Source Technology Centre
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