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: <20080227154854.6ee9432c.akpm@linux-foundation.org>
Date:	Wed, 27 Feb 2008 15:48:54 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	David Brownell <david-b@...bell.net>
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

On Fri, 22 Feb 2008 17:12:17 -0800
David Brownell <david-b@...bell.net> wrote:

> 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.  One example of such a
> driver is NAND driver for various FreeScale chips.  On platforms update
> with GPIO support, they can be used instead of a worst-case delay to
> verify that the BUSY signal is off.
> 
> (Also includes a couple minor unrelated doc updates.)
> 

Looks sane.

> Please include before 2.6.25-final ...

For what reason?
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