linux-kernel - Re: [PATCH 1/2] gpiolib: irqchip: prevent driver unloading if gpio is used as irq only

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Message-ID: <CACRpkdaY6c7qwc3DEiiKoB55v1Af2O705r=EHh-N8S6PG=gD=A@mail.gmail.com>
Date:	Thu, 16 Jul 2015 13:20:13 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Grygorii Strashko <grygorii.strashko@...com>
Cc:	Alexandre Courbot <gnurou@...il.com>, Sekhar Nori <nsekhar@...com>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Johan Hovold <johan@...nel.org>
Subject: Re: [PATCH 1/2] gpiolib: irqchip: prevent driver unloading if gpio is
 used as irq only

On Thu, Jun 25, 2015 at 7:30 PM, Grygorii Strashko
<grygorii.strashko@...com> wrote:

> Now nothing prevents GPIO driver from being unloaded if its gpios
> were requested as GPIO IRQs only (without calling gpio_request()).
>
> Hence, add calls of try_module_get()/module_put() into
> gpiochip_irq_reqres/relres() to track such scenario properly.
>
> Cc: Johan Hovold <johan@...nel.org>
> Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>

Patch applied with Alexandre's review tag.

Yours,
Linus Walleij
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