Re: [PATCH -next] x86 mrst: fix build error when X86_MRST is not enabled

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On Thu, 29 Sep 2011 13:35:16 -0700
Randy Dunlap <rdunlap@xxxxxxxxxxxx> wrote:

> From: Randy Dunlap <rdunlap@xxxxxxxxxxxx>
> 
> Fix build when CONFIG_X86_INTEL_MID is enabled but
> CONFIG_X86_MRST is not enabled.  Fixes this build error:

This looks wrong. Unfortunately until we get kernel.org back its hard to
do much about it and see what is in all the trees.

> -#ifdef CONFIG_X86_INTEL_MID
> +#ifdef CONFIG_X86_MRST
>  
>  static inline enum mrst_cpu_type mrst_identify_cpu(void)
>  {
>  	return __mrst_cpu_chip;
>  }
>  
> -#else /* !CONFIG_X86_INTEL_MID */
> +#else /* !CONFIG_X86_MRST */
>  
>  #define mrst_identify_cpu()    (0)
>  
> -#endif /* !CONFIG_X86_INTEL_MID */
> +#endif /* !CONFIG_X86_MRST */

This breaks Medfield so NAK

The correct behaviour should be 

INTEL_MID defined -> mrst_cpu_chip has meaning
INTEL_MID not defined -> mrst_identify_chip is 0

your change makes it 0 for Medfield which means it will crash on boot.
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