Re: [PATCH] drivers: Let several drivers depends on HAS_IOMEM for 'devm_ioremap_resource'

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On 07/18/2014 03:35 PM, Richard Weinberger wrote:
> Am 18.07.2014 02:36, schrieb Chen Gang:
>>
>> On 07/18/2014 02:09 AM, Richard Weinberger wrote:
>>> Am 17.07.2014 12:48, schrieb Arnd Bergmann:
>>>> AFAICT, NO_IOMEM only has a real purpose on UML these days. Could we take
>>>> a shortcut here and make COMPILE_TEST depend on !UML? Getting random stuff
>>>> to build on UML seems pointless to me and we special-case it in a number of
>>>> places already.
>>>
>>> If UML is the only arch without io memory the dependency on !UML seems
>>> reasonable to me. :-)
>>>
>>
>> For me, if only uml left, I suggest to implement dummy functions within
>> uml instead of let CONFIG_UML appear in generic include directory. And
>> then remove all HAS_IOMEM and NO_IOMEM from kernel.
> 
> Erm, this is something completely different.
> I thought we're focusing on COMPILE_TEST?
> 

COMPILE_TEST is none-architecture specific, but UML is. So in generic
include folder, if we're focusing on choosing whether COMPILE_TEST or
UML, for me, I will choose COMPILE_TEST.

If we're not only focusing on COMPILE_TEST, for me, if something only
depend on one architecture, I'd like to put them under "arch/*/" folder.

Especially, after that, we can remove all HAS_IOMEM and NO_IOMEM, nobody
has to think of them again. :-)


Thanks.
-- 
Chen Gang

Open, share, and attitude like air, water, and life which God blessed
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