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Date:	Sat, 21 Apr 2012 14:25:51 -0700
From:	David Daney <david.s.daney@...il.com>
To:	David Miller <davem@...emloft.net>
CC:	ddaney.cavm@...il.com, grant.likely@...retlab.ca,
	rob.herring@...xeda.com, devicetree-discuss@...ts.ozlabs.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mips@...ux-mips.org, afleming@...il.com,
	galak@...nel.crashing.org, david.daney@...ium.com
Subject: Re: [PATCH v5 2/3] netdev/of/phy: Add MDIO bus multiplexer support.

On 04/21/2012 12:32 PM, David Miller wrote:
> From: David Daney<ddaney.cavm@...il.com>
> Date: Wed, 18 Apr 2012 16:20:53 -0700
>
>> +config MDIO_BUS_MUX
>> +	tristate
>> +	help
>> +	  This module provides a driver framework for MDIO bus
>> +	  multiplexers which connect one of several child MDIO busses
>> +	  to a parent bus.  Switching between child busses is done by
>> +	  device specific drivers.
>> +
> This driver uses OF and OF_MDIO, and therefore need dependencies upon
> them.  Otherwise it can be enabled in configurations which will result
> in build failures.

Note that this symbol cannot be selected by the user, only indirectly 
via the MDIO_BUS_MUX_GPIO symbol (in patch 3/3) which has the proper 
dependencies.

If we were to specify the dependencies in both places, we gain nothing other than duplication of information.

However, if you insist, I will of course add it here too.

David Daney






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