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

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Message-ID: <CACRpkdazTt+_9m-iWEee2gJy4MQ+QNo3Rb2JY9hVSSXK2-dJRw@mail.gmail.com>
Date:	Mon, 9 Mar 2015 17:14:39 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Boris Brezillon <boris.brezillon@...e-electrons.com>
Cc:	Nicolas Ferre <nicolas.ferre@...el.com>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.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 Sun, Feb 8, 2015 at 7:23 PM, 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>

Patch applied with all the ACKs.

Happy new year J-C!

Yours,
Linus Walleij
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