linux-kernel - Re: [PATCH 5/8] gpio: exar: Fix reading of directions and values

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Message-ID: <CAHp75VdsL_bT-HN3yHxNwQTMfJnfDc1EPEmn+ARZSvZDts7W6g@mail.gmail.com>
Date:   Thu, 18 May 2017 13:23:33 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Jan Kiszka <jan.kiszka@...mens.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Alexandre Courbot <gnurou@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        Sudip Mukherjee <sudip.mukherjee@...ethink.co.uk>,
        Sascha Weisenberger <sascha.weisenberger@...mens.com>
Subject: Re: [PATCH 5/8] gpio: exar: Fix reading of directions and values

On Thu, May 18, 2017 at 1:16 PM, Jan Kiszka <jan.kiszka@...mens.com> wrote:
> On 2017-05-18 12:11, Andy Shevchenko wrote:
>> On Thu, May 18, 2017 at 8:20 AM, Jan Kiszka <jan.kiszka@...mens.com> wrote:

>> Full picture:
>>
>>  val = exar_get(chip, addr) & BIT(offset % 8);
>>
>>  return !!val;
>>
>> How it could be non-(1 or 0)?
>>
>
> Right - but what is the point of that other style?

gpio-exar.c is just 4th module which is using it, OTOH the rest of
GPIO drivers are using return !!val style.


-- 
With Best Regards,
Andy Shevchenko