Re: [PATCH v2] arch: Kconfig: Let all little endian architectures define CPU_LITTLE_ENDIAN explicitly

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

CC kbuild

On Wed, Aug 13, 2014 at 12:48 AM, Chen Gang <gang.chen.5i5j@xxxxxxxxx> wrote:
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index c49a775..0510a5d 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -199,6 +199,11 @@ config NEED_DMA_MAP_STATE
>  config ARCH_SUPPORTS_UPROBES
>         def_bool y
>
> +config CPU_LITTLE_ENDIAN
> +       depends on !CPU_BIG_ENDIAN
> +       def_bool y
> +
> +
>  config ARCH_HAS_DMA_SET_COHERENT_MASK
>         bool

As this is a common symbol, and replicated for all affected architectures,
I'm wondering if we should have the "config CPU_LITTLE_ENDIAN" in
common Kconfig code instead, and make the individual architectures do a
"select CPU_LITTLE_ENDIAN"?

Also we could have "config CPU_BIG_ENDIAN", too, and error out
if none or both are selected (can Kconfig error out?).

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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