linux-kernel - Re: [PATCH 2/2] gpiolib: Implement devm_gpio_request

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Message-ID: <CACRpkdZCjCEaudWb+pdd_cvWaLs_W5-Mo+2CWcfopkRorMZBSA@mail.gmail.com>
Date:	Sun, 13 May 2012 01:19:58 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	Linus Walleij <linus.walleij@...ricsson.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] gpiolib: Implement devm_gpio_request_one()

On Wed, May 2, 2012 at 1:46 PM, Mark Brown
<broonie@...nsource.wolfsonmicro.com> wrote:

> Allow drivers to use the modern request and configure idiom together
> with devres.
>
> As with plain gpio_request() and gpio_request_one() we can't implement
> the old school version in terms of _one() as this would force the
> explicit selection of a direction in gpio_request() which could break
> systems if we pick the wrong one.  Implementing devm_gpio_request_one()
> in terms of devm_gpio_request() would needlessly complicate things or
> lead to duplication from the unmanaged version depending on how it's
> done.
>
> Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>

Acked-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij
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