Subject: Re: [PATCH 1/2] Fix build error caused by broken PCH_PTP module dependency.

From: Haicheng Li <[email-masked]>
Date: Fri, 28 Sep 2012 14:57:38 +0800

On 09/28/2012 02:46 PM, David Miller wrote:
> From: Haicheng Li<[email-masked]>
> Date: Fri, 28 Sep 2012 14:41:43 +0800
>
>> On 09/28/2012 06:09 AM, David Miller wrote:
>>> Look at how other people submit patches, do any other patch
>>> submissions
>>> look like your's having all of this metadata in the message body:
>> I'm sorry for it.
>>
>>> As for this specific patch:
>>>
>>>> -	depends on PTP_1588_CLOCK_PCH
>>>> +	depends on PTP_1588_CLOCK_PCH = PCH_GBE
>>>
>>> This is not the correct way to ensure that the module'ness of one
>>> config option meets the module'ness requirements of another.
>>> The correct way is to say something like "&&   (PCH_GBE || PCH_GBE=n)"
>>
>> This case is a little bit tricky than usual, with PCH_PTP selected,
>> the valid config would be either "PTP_1588_CLOCK_PCH=PCH_GBE=m" or
>> "PTP_1588_CLOCK_PCH=PCH_GBE=y", and PTP_1588_CLOCK_PCH depends on
>> PCH_GBE.
>
> And a simple "&&  PCH_GBE" should accomplish this, no?
No sir. it's actually same with the original Kconfig (by a if PCH_GBE"), it 
just failed with this config:

         CONFIG_PCH_GBE=y
         CONFIG_PCH_PTP=y
         CONFIG_PTP_1588_CLOCK=m

-haicheng