linux-kernel - Re: [PATCH] gpio: return NULL from gpiod_get

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 20 Feb 2015 14:37:47 +0900
From:	Alexandre Courbot <gnurou@...il.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>,
	Linus Walleij <linus.walleij@...aro.org>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] gpio: return NULL from gpiod_get_optional when GPIOLIB is disabled

On Fri, Feb 20, 2015 at 2:33 PM, Dmitry Torokhov
<dmitry.torokhov@...il.com> wrote:
>> I should have commented at that time, but let's do it now: I agree
>> with the idea, but this leaves the door open to confusing situations
>> in case gpiolib was unintentionally disabled. Could you also add a
>> note in the documentation of this function to explain this behavior,
>> to spare a few headaches to users of this function?
>
> You mean the inline documentation in drivers/gpio/gpiolib.c and
> drivers/gpio/devres.c? I can certainly mention there that is GPIOLIB is disabled
> thy will return NULL unlike the non-optional variants.

I was thinking about Documentation/gpio/consumer.txt, but having a
note in the inline documentation as well certainly makes sense.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/