linux-kernel - Re: [PATCH] powerpc/ep8248e: Fix compile problem if !CONFIG_FS

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Message-Id: <37829F82-D71C-4B42-A752-DA86C6F2764D@kernel.crashing.org>
Date:	Wed, 16 Jul 2008 17:10:29 -0500
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Dave Jones <davej@...hat.com>
Cc:	Scott Wood <scottwood@...escale.com>, linuxppc-dev@...abs.org,
	akpm@...ux-foundation.org, torvalds@...ux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc/ep8248e: Fix compile problem if !CONFIG_FS_ENET


On Jul 16, 2008, at 4:57 PM, Dave Jones wrote:

> On Wed, Jul 16, 2008 at 04:47:23PM -0500, Scott Wood wrote:
>> On Wed, Jul 16, 2008 at 08:39:12AM -0500, Kumar Gala wrote:
>>> If we don't enable FS_ENET we get build issues:
>>>
>>> arch/powerpc/platforms/built-in.o: In function `ep8248e_mdio_probe':
>>> arch/powerpc/platforms/82xx/ep8248e.c:129: undefined reference to  
>>> `alloc_mdio_bitbang'
>>> arch/powerpc/platforms/82xx/ep8248e.c:143: undefined reference to  
>>> `mdiobus_register'
>>
>> How is this possible?  CONFIG_EP8248E selects CONFIG_MDIO_BITBANG.
>
> If CONFIG_PHYLIB=m however, that doesn't make any difference, because
> vmlinuz is trying to use a symbol which now lives in a module.

The mdiobus_register make sense, I'm not sure get why  
alloc_mdio_bitbang is undefined.

- k 
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