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

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Date:	Fri, 22 Feb 2013 17:20:56 +0800
From:	Dong Aisheng <b29396@...escale.com>
To:	Thierry Reding <thierry.reding@...onic-design.de>
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 09:52:12AM +0100, Thierry Reding wrote:
> 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.
> 
I just tried update to latest linus tree, still did not find this API defined
in include/linux/io.h.
Would you mind point it out for me?

Regards
Dong Aisheng

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