linux-kernel - Re: [PATCH v4] mfd: syscon: Add non-DT support

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Message-ID: <20130222085212.GA27653@avionic-0098.mockup.avionic-design.de>
Date:	Fri, 22 Feb 2013 09:52:12 +0100
From:	Thierry Reding <thierry.reding@...onic-design.de>
To:	Dong Aisheng <b29396@...escale.com>
Cc:	Alexander Shiyan <shc_work@...l.ru>, linux-kernel@...r.kernel.org,
	Arnd Bergmann <arnd@...db.de>,
	Dong Aisheng <dong.aisheng@...aro.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	gregkh@...uxfoundation.org
Subject: Re: [PATCH v4] mfd: syscon: Add non-DT support

On Fri, Feb 22, 2013 at 04:29:55PM +0800, Dong Aisheng wrote:
> On Fri, Feb 22, 2013 at 08:27:19AM +0100, Thierry Reding wrote:
> ...
> > > > > Otherwise, i'm also ok with this patch.
> > > > > Acked-by: Dong Aisheng <dong.aisheng@...aro.org>
> > > > > 
> > > > > BTW, i did not see Samuel's tree having this new API.
> > > > > So, who will pick this patch?
> > > > 
> > > > I have same question.
> > > 
> > > I CCed Thierry and Greg who may know it.
> > 
> > Yes, devm_ioremap_resource() never returns NULL. You always need to
> > check the returned pointer with IS_ERR(). The value that you return
> > should be extracted from the pointer with PTR_ERR().
> 
> Thanks Thierry.
> Since Samuel's mdf tree does not have your patch introducing
> the new API of devm_ioremap_resource,
> do you know which tree this patch can go through, Greg's driver core tree?

I don't think it matters much at this point because Linus merged the
driver core tree yesterday, so anything that gets applied now should
automatically have the new API available.

Thierry

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