On Sat, Oct 01, 2011 at 10:03:48PM +0200, Arnd Bergmann wrote:
> The PJ4 based pxa95x cpus all have iwmmxt and there is no way to
> build that code conditionally, so better not ask the user
> in that configuration, in order to prevent broken builds.

This suggests we want IWMMXT=y if PJ4=y...

>  config IWMMXT
> -	bool "Enable iWMMXt support"
> +	bool "Enable iWMMXt support" if !CPU_PJ4
>  	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
>  	default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
>  	help

This hides the option if CPU_PJ4 is enabled, but it will only be set
to 'y' if PXA27x || PXA3xx || PXA95x || ARCH_MMP are set.  Luckily,
ARCH_MMP will be - but is that really what's intended?  It's a little
obscure to work that out.