linux-kernel - Re: [PATCH] drivers/nfc: remove obsolete setting of DEBUG

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Date:	Wed, 29 Apr 2015 10:58:51 +0200
From:	Paul Bolle <pebolle@...cali.nl>
To:	Valentin Rothberg <valentinrothberg@...il.com>
Cc:	Joe Perches <joe@...ches.com>, lauro.venancio@...nbossa.org,
	aloisio.almeida@...nbossa.org, sameo@...ux.intel.com,
	clement.perrochaud@...innov.com, charles.gorand@...innov.com,
	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
	Andreas Ruprecht <rupran@...server.de>,
	hengelein Stefan <stefan.hengelein@....de>
Subject: Re: [PATCH] drivers/nfc: remove obsolete setting of DEBUG

On Wed, 2015-04-29 at 10:45 +0200, Valentin Rothberg wrote:
> Thanks, I was not aware of it at all.  I read the code and it seems
> that if neither DYNAMIC_DEBUG nor DEBUG is defined, pr_debug() does
> nothing more than to return 0.
> 
> I am not sure what to do in this case.  Somehow it seems reasonable to
> me to add NFC_DEBUG to Kconfig since a considerable amount of code in
> nfc seems to depend on DEBUG.

A few greps tell me the first pointless reference to CONFIG_NFC_DEBUG
was added in v3.1. So clearly the people actually building and using the
nfc code don't need the DEBUG flag. Apparently using pr_debug() by
setting CONFIG_DYNAMIC_DEBUG works for them. (I trust Joe will shout
when that statement is incorrect.)

So, as I said, the patch should be fine, and only the commit explanation
needs work.


Paul Bolle

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