linux-kernel - Re: [PATCH] irq: Changed the return type of irq_chip.irq

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Message-ID: <20140301160114.GE21483@n2100.arm.linux.org.uk>
Date:	Sat, 1 Mar 2014 16:01:14 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	James Hogan <james.hogan@...tec.com>, grant.likely@...aro.org,
	linus.walleij@...aro.org,
	Jean-Jacques Hiblot <jjhiblot@...phandler.com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] irq: Changed the return type of irq_chip.irq_startup()
	from unsigned int to int

On Sat, Mar 01, 2014 at 04:31:13PM +0100, Thomas Gleixner wrote:
> On Fri, 28 Feb 2014, James Hogan wrote:
> > On Thursday 27 February 2014 18:21:19 Jean-Jacques Hiblot wrote:
> > >  drivers/irqchip/irq-metag.c               | 4 ++--
> > 
> > I think you've missed out drivers/irqchip/irq-metag-ext.c
> 
> There is a good reason why I asked to do this with coccinelle.

Go easy, not everyone understands that complex tool - I certainly don't.
I ended up deleting it from my system after several failed attempts, and
I came to the conclusion that to use it properly, you also needed a Julia
installed along side you to learn how to write its scripts.

The big problem is it /doesn't/ do what it advertises to - I ended up
writing expression after expression to make it detect all the various
forms of what I wanted it to, which as I understand the tool is precisely
the opposite of what you're supposed to do with it.

I ended up coming to the conclusion that a well formed sed and/or grep
expression was far more useful and effective than trying to figure out
coccinelle.

-- 
FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly
improving, and getting towards what was expected from it.
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