[PATCH 2/2] ARM: Make CONFIG_FPE_NWFPE depend on !CONFIG_THUMB2_KERNEL

[Nicolas Pitre]

On Thu, 9 Dec 2010, Dave Martin wrote:

> Because the nwfpe support is unlikely to be used on new platforms
> and requires CONFIG_OABI_COMPAT, which is not generally used with
> ARMv7+, we shouldn't expect to build nwfpe support into a Thumb-2
> kernel.
> 
> At present, nwfpe contains assembly code which isn't Thumb-2
> compatible, and for now it doesn't appear useful to port this
> code.
> 
> All ARMv7-A/R platforms necessarily have VFPv3 hardware floating-
> point natively, making emulation unnecessary.
> 
> Signed-off-by: Dave Martin <dave.martin at linaro.org>
> Acked-by: Catalin Marinas <catalin.marinas at arm.com>

Acked-by: Nicolas Pitre <nicolas.pitre at linaro.org>


> ---
>  arch/arm/Kconfig |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index f9ca7f3..7e825c3 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -1759,7 +1759,7 @@ comment "At least one emulation must be selected"
>  
>  config FPE_NWFPE
>  	bool "NWFPE math emulation"
> -	depends on !AEABI || OABI_COMPAT
> +	depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
>  	---help---
>  	  Say Y to include the NWFPE floating point emulator in the kernel.
>  	  This is necessary to run most binaries. Linux does not currently
> -- 
> 1.7.1
> 
> 
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