linux-kernel - Re: [PATCH] gpio: sx150x: fix error code value

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Date:	Mon, 13 Sep 2010 09:23:03 -0700
From:	Gregory Bean <gbean@...eaurora.org>
To:	Vasiliy Kulikov <segooon@...il.com>
CC:	kernel-janitors@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] gpio: sx150x: fix error code value

>   	err = sx150x_i2c_read(chip->client, reg,&data);
>   	if (err>= 0)
> -		err = (data&  mask) != 0 ? 1 : 0;
> +		err = (data&  mask) != 0 ? -EIO : 0;
>

This doesn't work.  The IO pins are gpio data pins, which are used as 0 
or 1 data values (see sx150x_gpio_get).  Returning -EIO whenever an 
attempt is made to gpio_get_value on a non-zero gpio line will break things.

--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
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