linux-kernel - Re: [PATCH] Add LED pattern trigger

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Message-ID: <CAFLxGvwmS790goxNhO33p63MAic_bV8dpY+iMVFhuCUrxCWcbw@mail.gmail.com>
Date:	Fri, 3 Jan 2014 10:33:51 +0100
From:	Richard Weinberger <richard.weinberger@...il.com>
To:	Bryan Wu <cooloney@...il.com>
Cc:	David Lang <david@...g.hm>,
	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
	Joe Xue <lgxue@...mail.com>,
	"rpurdie@...ys.net" <rpurdie@...ys.net>,
	"rob@...dley.net" <rob@...dley.net>,
	"milo.kim@...com" <milo.kim@...com>, "pavel@....cz" <pavel@....cz>,
	"linux-leds@...r.kernel.org" <linux-leds@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>
Subject: Re: [PATCH] Add LED pattern trigger

On Fri, Jan 3, 2014 at 1:14 AM, Bryan Wu <cooloney@...il.com> wrote:
> IMHO, firstly we should take this trigger into kernel, most time it
> works as a module. But we need to define a good interface between
> kernel and user space.

Put it in first place into the kernel such that it becomes ABI and
nobody is allowed
to remove it later?

Better design a sane interface such that such complex LED operations
can be achieved
in userspace using an helper library.

-- 
Thanks,
//richard
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