Re: [PATCH] drm: atmel-hlcdc: Add dependency on ARM

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Le 24/01/2015 18:15, Boris Brezillon a écrit :
> Hi Guenter,
> 
> On Fri, 23 Jan 2015 12:44:10 -0800
> Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
> 
>> On 01/23/2015 12:03 PM, Boris Brezillon wrote:
>>> The atmel-hlcdc driver selects DRM_GEM_CMA_HELPER which makes use of
>>> symbols only available when HAVE_DMA_ATTRS is selected.
>>> Add a dependency on the ARM architecture which select this option.
>>>
>>> Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
>>> ---
>>>   drivers/gpu/drm/atmel-hlcdc/Kconfig | 2 +-
>>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/gpu/drm/atmel-hlcdc/Kconfig b/drivers/gpu/drm/atmel-hlcdc/Kconfig
>>> index 1a08562..99b4f06 100644
>>> --- a/drivers/gpu/drm/atmel-hlcdc/Kconfig
>>> +++ b/drivers/gpu/drm/atmel-hlcdc/Kconfig
>>> @@ -1,6 +1,6 @@
>>>   config DRM_ATMEL_HLCDC
>>>   	tristate "DRM Support for ATMEL HLCDC Display Controller"
>>> -	depends on DRM && OF && COMMON_CLK && MFD_ATMEL_HLCDC
>>> +	depends on DRM && OF && COMMON_CLK && MFD_ATMEL_HLCDC && ARM
>>
>> && HAVE_DMA_ATTRS
>>
>> might have been a bit less restrictive.
> 
> Actually I greped HAVE_DMA_ATTRS in the kernel source tree and
> apparently nobody directly depends on it, they all depend on one or
> several architectures instead.
> 
>> Are you sure this controller
>> is never used on any other architecture but arm, not even arm64 ?
> 
> Not that I know of, but maybe Nicolas can give some hints about the
> upcoming Atmel ARM64 processors (or the long awaited Atmel AVR 64 bits
> processor :-)).
> 
> More seriously, if Atmel ever decide to reuse this IP on a different
> architecture, I think we'll add an '&& (ARM || XXX)' condition to the
> depends on line.

Yes, it's not planned in the near future. So we can keep the "ARM"
restriction for now I think.

Bye,

>> Anyway, the xtensa:allmodconfig build is passing again with this patch
>> applied, so
>>
>> Tested-by: Guenter Roeck <linux@xxxxxxxxxxxx>
>>
> 
> Thanks for reporting the bug and testing the fix.
> 
> Best Regards,
> 
> Boris
> 
> 
> 


-- 
Nicolas Ferre
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