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

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Date:	Sat, 29 Mar 2014 10:52:56 +0100
From:	Boris BREZILLON <b.brezillon.dev@...il.com>
To:	Arnd Bergmann <arnd@...db.de>, linux-arm-kernel@...ts.infradead.org
CC:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.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

Le 29/03/2014 10:12, Arnd Bergmann a écrit :
> 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'll fix it for the next version.

> 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
>
>
Thanks for the detailled explanation :-).

Best Regards,

Boris
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