linux-kernel - Re: [PATCH] gpiolib: fix filtering out unwanted events

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Message-ID: <CACRpkdZd=rGQy8kGEjS8pEAJ+xYpBn=JmGXDpSf3qF_P2aa6TA@mail.gmail.com>
Date:   Thu, 29 Jun 2017 15:16:19 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Bartosz Golaszewski <brgl@...ev.pl>
Cc:     "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] gpiolib: fix filtering out unwanted events

On Thu, Jun 29, 2017 at 1:03 PM, Bartosz Golaszewski <brgl@...ev.pl> wrote:
> 2017-06-29 11:33 GMT+02:00 Linus Walleij <linus.walleij@...aro.org>:
>> On Fri, Jun 23, 2017 at 1:45 PM, Bartosz Golaszewski <brgl@...ev.pl> wrote:
>>
>>> GPIOEVENT_REQUEST_BOTH_EDGES is not a single flag, but a binary OR of
>>> GPIOEVENT_REQUEST_RISING_EDGE and GPIOEVENT_REQUEST_FALLING_EDGE.
>>>
>>> The expression 'le->eflags & GPIOEVENT_REQUEST_BOTH_EDGES' we'll get
>>> evaluated to true even if only one event type was requested.
>>>
>>> Fix it by checking both RISING & FALLING flags explicitly.
>>>
>>> Signed-off-by: Bartosz Golaszewski <brgl@...ev.pl>
>>
>> Patch applied for fixes.
>>
>> Yours,
>> Linus Walleij
>
> Thanks. I think this should also go to linux-stable (e.g. 4.9 LTS is
> affected). Will you forward it or should I do it myself?

I have added the stable tag so it should JustWork(TM).

Yours,
Linus Walleij