linux-kernel - Re: [PATCH] ARM: multiplatform: Sort the max gpio numbers.

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Message-ID: <20130311163842.GK4977@n2100.arm.linux.org.uk>
Date:	Mon, 11 Mar 2013 16:38:42 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:	Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: multiplatform: Sort the max gpio numbers.

Arnd, Olof,

Have you merged this for -rc ?

On Sun, Feb 03, 2013 at 12:24:48PM +0100, Maxime Ripard wrote:
> When building a multiplatform kernel, we could end up with a smaller
> number of GPIOs than the one required by the platform the kernel was
> running on.
> 
> Sort the max GPIO number by descending order so that we always take the
> highest number required.
> 
> Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
> ---
>  arch/arm/Kconfig |    7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index 1e86fa9..852ae76 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -1626,13 +1626,16 @@ config LOCAL_TIMERS
>  	  accounting to be spread across the timer interval, preventing a
>  	  "thundering herd" at every timer tick.
>  
> +# The GPIO number here must be sorted by descending number. In case of
> +# a multiplatform kernel, we just want the highest value required by the
> +# selected platforms.
>  config ARCH_NR_GPIO
>  	int
>  	default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
> -	default 355 if ARCH_U8500
> -	default 264 if MACH_H4700
>  	default 512 if SOC_OMAP5
> +	default 355 if ARCH_U8500
>  	default 288 if ARCH_VT8500 || ARCH_SUNXI
> +	default 264 if MACH_H4700
>  	default 0
>  	help
>  	  Maximum number of GPIOs in the system.
> -- 
> 1.7.10.4
> 
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