Re: CPU_BIG_ENDIAN in generic code (was: Re: [PATCH v3 3/7] arch/sparc: Define config parameter CPU_BIG_ENDIAN)

[Babu Moger <babu.moger@oracle.com>]

On 5/25/2017 3:09 PM, Arnd Bergmann wrote:
> On Thu, May 25, 2017 at 4:51 PM, Babu Moger <babu.moger@oracle.com> wrote:
>> On 5/24/2017 5:18 AM, Arnd Bergmann wrote:
>>>> I guess the time is ripe for adding (both) symbols to all architectures?
>>> Good idea. I think we can do most of this by adding a few lines to
>>> arch/Kconfig:
>>>
>>> config CPU_BIG_ENDIAN
>>>           bool
>>>
>>> config CPU_LITTLE_ENDIAN
>>>          def_bool !CPU_BIG_ENDIAN
>>>
>>> This way, we only need to add 'select CPU_BIG_ENDIAN' to the
>>> architectures that are always big-endian, and we don't need to
>>> change anything for the ones that have a single 'CPU_BIG_ENDIAN'
>>> option.
>>>
>>> The three architectures that have a 'choice' statement (mips, ppc and
>>> sh) will have to convert, and m32r will have to replace the
>>
>> what to you mean by "(mips, ppc andsh) will have to convert"?  Do you expect
>> any changes here?
>>
> Kconfig does not allow you to have the same symbol as both a regular
> 'bool' and also 'bool within choice', so those three have to replace the
> choice with a user-visible 'config CPU_BIG_ENDIAN' option like the
> other ones have.

Ok. I will address it in my  next version.  Thanks

>
> I also notice that  for arch/s390/Kconfig you now have both the
> 'select CPU_BIG_ENDIAN' and the 'config CPU_BIG_ENDIAN
> def_bool y', I'd remove the second one in the same patch.

Sure. Will correct it.
>         Arnd