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Date: Sat, 31 Aug 2013 13:53:01 -0300
From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
To: David Woodhouse <dwmw2@infradead.org>
Subject: Re: [PATCH v4 01/14] mtd: nand: pxa3xx: Remove unneeded ifdef
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On Fri, Aug 30, 2013 at 09:06:22PM +0100, David Woodhouse wrote:
> On Mon, 2013-08-12 at 14:14 -0300, Ezequiel Garcia wrote:
> > There's no need to enclose this code within idef CONFIG_OF,
> > because the OF framework provides no-op stubs if CONFIG_OF=n.
> 
> Hm, won't this end up with the same 'pxa3xx_nand_dt_ids is defined but
> not used' warning that just caused us to *add* an #ifdef CONFIG_OF to
> atmel_nand? 
> 

No, it won't.

Currently atmel_nand uses its of_device_id for just the of_match_table,
while pxa3xx-nand uses the pxa3xx_nand_dt_ids for more than just that,
as a paramater for of_match_device().

The latter prevents the warning by having an actual dummy-inlined
implementation for the !OF case.

I'll answer about the atmel_nand in the respective patch.
-- 
Ezequiel García, Free Electrons
Embedded Linux, Kernel and Android Engineering
http://free-electrons.com