linux-kernel - Re: [PATCH] MX1/MX2: -EINVAL overwritten in second iteration in mxc_gpio_setup_multiple

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Message-ID: <20100203205609.GG20113@pengutronix.de>
Date:	Wed, 3 Feb 2010 21:56:09 +0100
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Roel Kluin <roel.kluin@...il.com>
Cc:	Sascha Hauer <kernel@...gutronix.de>,
	linux-arm-kernel@...ts.infradead.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] MX1/MX2: -EINVAL overwritten in second iteration in
	mxc_gpio_setup_multiple_pins()

On Wed, Feb 03, 2010 at 08:19:00PM +0100, Roel Kluin wrote:
> Due to the `ret = gpio_request()' below in the loop, the initial -EINVAL value
> of ret is overwritten. 
> 
> Signed-off-by: Roel Kluin <roel.kluin@...il.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

> ---
> Not 100% sure this is needed, please review. One more question: is it ok
> to return 0 when count is 0 (and nothing is done)?
I'd say yes.  If you want nothing from me, I can say I gave you all you
wanted without doing anything.

Thanks
Uwe

-- 
Pengutronix e.K.                              | Uwe Kleine-König            |
Industrial Linux Solutions                    | http://www.pengutronix.de/  |
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