linux-kernel - Re: [RFC PATCH v2 03/10] ARM: at91: introduce OLD_IRQ

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Message-ID: <7407417.cSDunZuEhW@wuerfel>
Date:	Sat, 29 Mar 2014 10:12:54 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Boris BREZILLON <b.brezillon.dev@...il.com>,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	linux-kernel@...r.kernel.org, Rob Landley <rob@...dley.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>
Subject: Re: [RFC PATCH v2 03/10] ARM: at91: introduce OLD_IRQ_AT91 Kconfig option

On Saturday 29 March 2014 10:06:39 Thomas Petazzoni wrote:
> Dear Boris BREZILLON,
> 
> On Fri, 28 Mar 2014 18:59:01 +0100, Boris BREZILLON wrote:
> 
> > +config OLD_IRQ_AT91
> > +     bool
> > +     default false
> 
> I don't think "default false" is a valid Kconfig construct. It could be
> "default n", but that's useless since "default n" is the default
> behavior. So I believe you can simply get rid of that line.

I think the above is syntactically correct, but it would be highly confusing in
anyone ever does

config false
	def_bool y

;-)

Aside from that, these three have completely identical meaning:

config OLD_IRQ_AT91
	bool

config OLD_IRQ_AT91
	def_bool n

config OLD_IRQ_AT91
	bool
	default n

	Arnd


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