linux-kernel - Re: [patch 2.6.25-rc2-git] gpio: <linux/gpio.h> and "no GPIO support here" stubs

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Message-Id: <200802271642.57895.david-b@pacbell.net>
Date:	Wed, 27 Feb 2008 16:42:57 -0800
From:	David Brownell <david-b@...bell.net>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, cbouatmailru@...il.com,
	avorontsov@...mvista.com, florian.fainelli@...ecomint.eu
Subject: Re: [patch 2.6.25-rc2-git] gpio:  <linux/gpio.h> and "no GPIO support here" stubs

> > Add a <linux/gpio.h> defining fail/warn stubs for GPIO calls on platforms
> > that don't support the GPIO programming interface.  That includes the
> > arch-specific implementation glue otherwise.
> > 
> > This facilitates a new model for GPIO usage:  drivers that can use GPIOs
> > if they're available, but don't require them.  ...
> > 
> 
> Looks sane.
> 
> > Please include before 2.6.25-final ...
> 
> For what reason?

So that 2.6.25 based systems can start to use it.  This patch is in that
"safe, can't break any existing code" category, so I don't see a downside.

- Dave


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