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Date: Sun, 28 Sep 2014 09:49:29 +0800 (CST)
From: =?gbk?B?WHVldGFvIEd1YW4g?= <gxt@pku.edu.cn>
To: Paul Bolle <pebolle@tiscali.nl>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>, linux-kernel@vger.kernel.org,
        linux-arch <linux-arch@vger.kernel.org>
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Sorry for late reply.

I checked this config, and it's only used for HAS_IOPORT_MAP in lib/Kconfig
Sure, removing it means no different for .config file.
I think a better way is reserving it or moving it into arch/Kconfig

Cc: linux-arch@vger.kernel.org

Xuetao Guan

----- Paul Bolle <pebolle@tiscali.nl> 写道：
> Architectures only need a Kconfig entry for NO_IOPORT_MAP if it is
> possible that its value will be 'y'. For unicore32 its value will always
> be 'n', making it pointless. Remove it.
> 
> Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
> ---
> Tested by playing with arch/unicore32/configs/unicore32_defconfig. This
> patch made no difference whatsoever to the generated .config file.
> Please note that it has
>     CONFIG_HAS_IOPORT_MAP=y
> 
> set after invoking "make oldconfig" both before and after this patch.
> 
>  arch/unicore32/Kconfig | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
> index 928237a7b9ca..2322cc87e7cb 100644
> --- a/arch/unicore32/Kconfig
> +++ b/arch/unicore32/Kconfig
> @@ -27,9 +27,6 @@ config UNICORE32
>  config GENERIC_CSUM
>  	def_bool y
>  
> -config NO_IOPORT_MAP
> -	bool
> -
>  config STACKTRACE_SUPPORT
>  	def_bool y
>  
> -- 
> 1.9.3
>