linux-kernel - Re: [PATCH] cs5535_gpio: gpio_chip.get should return the input value

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Message-Id: <20100224145822.803e86ed.akpm@linux-foundation.org>
Date:	Wed, 24 Feb 2010 14:58:22 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Ben Gardner <gardner.ben@...il.com>
Cc:	Andres Salomon <dilinger@...labora.co.uk>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cs5535_gpio: gpio_chip.get should return the input
 value

On Tue, 23 Feb 2010 16:55:17 -0600 Ben Gardner <gardner.ben@...il.com> wrote:

> The gpio_chip.get() function for the CS5535 GPIO driver currently returns the
> output value instead of the input value.
> This patch changes it to return the input value.
> 
> Signed-off-by: Ben Gardner <gardner.ben@...il.com>
> ---
> --- linux-2.6.33-rc8.orig/drivers/gpio/cs5535-gpio.c
> +++ linux-2.6.33-rc8/drivers/gpio/cs5535-gpio.c
> @@ -154,7 +154,7 @@
> 
>  static int chip_gpio_get(struct gpio_chip *chip, unsigned offset)
>  {
> -	return cs5535_gpio_isset(offset, GPIO_OUTPUT_VAL);
> +	return cs5535_gpio_isset(offset, GPIO_READ_BACK);
>  }
> 
>  static void chip_gpio_set(struct gpio_chip *chip, unsigned offset, int val)

<presses F10>

What were the user-visible effects of this bug?
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