netdev - Re: [PATCH 02/12] fs_enet: Add MPC5121 FEC support.

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Message-Id: <983C93C9-4AA8-421B-B7F8-770E2FD672E1@kernel.crashing.org>
Date:	Thu, 7 May 2009 08:05:02 -0500
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Wolfgang Denk <wd@...x.de>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	Piotr Ziecik <kosmo@...ihalf.com>, Detlev Zundel <dzu@...x.de>,
	netdev@...r.kernel.org, linuxppc-dev@...abs.org,
	John Rigby <jrigby@...escale.com>
Subject: Re: [PATCH 02/12] fs_enet: Add MPC5121 FEC support.


On May 6, 2009, at 5:01 PM, Wolfgang Denk wrote:

> Dear Grant,
>
> in message <fa686aa40905061333q29c263c8p24856c048e30f4d0@...l.gmail.com 
> > you wrote:
>>
> ...
>>> #ifdef CONFIG_FS_ENET_HAS_FEC
>>> +#ifdef CONFIG_FS_ENET_MPC5121_FEC
>>> +    {
>>> +        .compatible = "fsl,mpc5121-fec",
>>> +        .data = (void *)&fs_fec_ops,
>>> +    },
>>> +#else
>>>   {
>>>       .compatible = "fsl,pq1-fec-enet",
>>>       .data = (void *)&fs_fec_ops,
>>>   },
>>> #endif
>>> +#endif
>>
>> Hmmm.  A lot of these #ifdefs in here.  Does this have a  
>> multiplatform
>> impact?  Not to mention the fact that it's just plain ugly.  :-)
>
> Agreed that it's ugly, but duplicatio9ng the code would have been even
> worse. I don't think that it has multiplatform - at least not as long
> as you don't ask for one image that runs on 83xx and on 512x.

We do ask for that.  The fedora ppc6xx kernel should work on any 6xx/ 
7xx/7xxx based core chip.  We should NOT be breaking such capability  
in drivers.

- k
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