linux-kernel - Re: [PATCH 0/2] pin controller subsystem v7

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Message-ID: <CACRpkdasYEFvJu0VhjGRTp2k2JupcWsrJ17g7fcrKXKphP3Zww@mail.gmail.com>
Date:	Wed, 21 Sep 2011 12:54:03 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Stephen Warren <swarren@...dia.com>
Cc:	Linus Walleij <linus.walleij@...ricsson.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	Barry Song <21cnbao@...il.com>,
	Lee Jones <lee.jones@...aro.org>,
	Joe Perches <joe@...ches.com>,
	Russell King <linux@....linux.org.uk>,
	Linaro Dev <linaro-dev@...ts.linaro.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	David Brown <davidb@...eaurora.org>
Subject: Re: [PATCH 0/2] pin controller subsystem v7

On Tue, Sep 20, 2011 at 10:10 PM, Stephen Warren <swarren@...dia.com> wrote:

> ... hence I was surprised to see that you explicitly note that mapping a
> single device to multiple controllers was disallowed.

Actually it's easy to fix, I mainly wanted to keep that until we have
a solid usecase for it, it's just a few lines of code the day we
need it.

> Then again, if this need ever does arise, we should be able to just relax
> this restriction without causing any backwards-compatibility issues, so
> I don't see a specific need to change this now; I just thought I'd mention
> it so you're aware of what I'm thinking.

It was actually on my mind, I just wanted to keep down the feature
creep to what was absolutely needed for the pin controllers we're
facing in arch/arm/* today.

Thanks!
Linus Walleij
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