linux-kernel - Re: [PATCH v3] of: Create asm-generic/of.h and provide default of_node_to

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Date:	Mon, 26 Jul 2010 15:48:54 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	grant.likely@...retlab.ca
Cc:	sam@...nborg.org, sfr@...b.auug.org.au, monstr@...str.eu,
	microblaze-uclinux@...e.uq.edu.au,
	devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...abs.org, benh@...nel.crashing.org,
	sparclinux@...r.kernel.org
Subject: Re: [PATCH v3] of: Create asm-generic/of.h and provide default
 of_node_to_nid()

From: Grant Likely <grant.likely@...retlab.ca>
Date: Mon, 26 Jul 2010 16:42:20 -0600

> It protects against some later include file doing a #define
> of_node_to_nid and thus resulting in an inconsistent definition.  If
> some code tries to do this then the preprocessor will complain.  This
> is the pattern that Stephen suggested.

Also, it would be nice to unravel the "0" vs. "-1" default
inconsistency.
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