linux-kernel - Re: [PATCH] pinctrl: at91: move lock/unlock_as_irq calls into request/release resources methods

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Message-ID: <20150226141201.670e6e18@bbrezillon>
Date:	Thu, 26 Feb 2015 14:12:01 +0100
From:	Boris Brezillon <boris.brezillon@...e-electrons.com>
To:	Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>
Cc:	Nicolas FERRE <nicolas.ferre@...el.com>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Jean-Jacques Hiblot <jjhiblot@...phandler.com>
Subject: Re: [PATCH] pinctrl: at91: move lock/unlock_as_irq calls into
 request/release resources methods

On Fri, 20 Feb 2015 15:50:36 +0800
Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com> wrote:

> 
> > On Feb 9, 2015, at 10:50 PM, Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com> wrote:
> > 
> > 
> >> On Feb 9, 2015, at 2:23 AM, Boris Brezillon <boris.brezillon@...e-electrons.com> wrote:
> >> 
> >> The gpiochip_lock_as_irq call can fail and return an error, while the
> >> irq_startup is not expected to fail (returns an unsigned int which is not
> >> checked by irq core code).
> >> 
> >> irq_request/release_resources functions have been created to address this
> >> problem.
> >> 
> >> Move gpiochip_lock/unlock_as_irq calls into
> >> irq_request/release_resources functions to prevent using a gpio as an irq
> >> if the gpiochip_lock_as_irq call failed.
> >> 
> >> Signed-off-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
> >> —
> > 
> > I’m travelling will take a look end of the week
> 
> just get back from travelling will take a look after Chinese new year
> as all my hw are at the office

Ping



-- 
Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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