netdev - Re: [PATCH] phylib: make mdio-gpio work without OF (v2)

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Message-ID: <8bd0f97a0811050032i206214a6r8d30a58f354995b4@mail.gmail.com>
Date:	Wed, 5 Nov 2008 03:32:55 -0500
From:	"Mike Frysinger" <vapier.adi@...il.com>
To:	"David Brownell" <david-b@...bell.net>
Cc:	"Grant Likely" <grant.likely@...retlab.ca>,
	"Paulius Zaleckas" <paulius.zaleckas@...tonika.lt>,
	netdev@...r.kernel.org, linux-arm-kernel@...ts.arm.linux.org.uk,
	linux-embedded@...r.kernel.org,
	"Laurent Pinchart" <laurentp@...-semaphore.com>
Subject: Re: [PATCH] phylib: make mdio-gpio work without OF (v2)

On Wed, Nov 5, 2008 at 03:11, David Brownell wrote:
> On Tuesday 04 November 2008, Mike Frysinger wrote:
>> > If indeed OF functions don't have declarations which are
>> > available on all platforms, that might be worth fixing
>> > to enable this approach to #ifdef elimination.
>>
>> OF is open firmware right ?  no way there's going to be OF for every
>> port that supports GPIO, so filling out the stubs in linux/of_gpio.h
>> will need to be done.
>
> In which case the boolean "we don't have OF" would be "false" and
> any code referencing the declared functions would be compiled out
> (being dead code/data).  So there would be no link-time references
> to any OF routines... standard technique.

i understand the compiler side just fine.  my point is that the
current linux/of_gpio.h only defines the OF structure and related
prototypes when CONFIG_OF_GPIO is defined.  so it needs updating
first.
-mike
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