[PATCH 1/8] arm: at91: add gpio_is_valid support

[Sascha Hauer]

On Mon, Oct 29, 2012 at 02:46:57PM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
> ---
>  arch/arm/mach-at91/include/mach/gpio.h |   11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/arch/arm/mach-at91/include/mach/gpio.h b/arch/arm/mach-at91/include/mach/gpio.h
> index 3533bf9..fa695a6 100644
> --- a/arch/arm/mach-at91/include/mach/gpio.h
> +++ b/arch/arm/mach-at91/include/mach/gpio.h
> @@ -22,6 +22,17 @@
>  
>  /* these pin numbers double as IRQ numbers, like AT91xxx_ID_* values */
>  
> +#define ARCH_NR_GPIOS 256
> +
> +static inline int gpio_is_valid(int gpio)
> +{
> +	if (gpio < 1)
> +		return 0;
> +	if (gpio < ARCH_NR_GPIOS)
> +		return 1;
> +	return 0;
> +}

Why is this patch in this series? It is unused and wrong. 0 is a valid
gpio.

Sascha


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