linux-kernel - Re: [PATCH v8 07/20] gpiolib: cdev: support GPIO_V2_GET_LINE_IOCTL and GPIO_V2_LINE_GET_VALUES

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Message-ID: <CAHp75VcJjPverHO9JxTBPfTn+L8rZnc2u=bhjJh63ZKbO1MPCA@mail.gmail.com>
Date:   Tue, 15 Sep 2020 18:29:23 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Kent Gibson <warthog618@...il.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH v8 07/20] gpiolib: cdev: support GPIO_V2_GET_LINE_IOCTL
 and GPIO_V2_LINE_GET_VALUES_IOCTL

On Wed, Sep 9, 2020 at 1:35 PM Kent Gibson <warthog618@...il.com> wrote:
>
> Add support for requesting lines using the GPIO_V2_GET_LINE_IOCTL, and
> returning their current values using GPIO_V2_LINE_GET_VALUES_IOCTL.
>
> The struct linereq implementation is based on the v1 struct linehandle
> implementation.

Seems I have reviewed v7 of this. According to the changelog most of
the comments are still applicable I think.

> Signed-off-by: Kent Gibson <warthog618@...il.com>
> ---
>
> The linereq_ioctl() is a simple wrapper around linereq_get_values() here,
> but will be extended with other ioctls in subsequent patches.
>
> Similarly, the struct line only contains the desc here, but will receive
> the edge detector and debouncer fields in subsequent patches.
>
> Changed for v8:
>  - fix BUILD_BUG_ON conditions and relocate them before the return in
>    gpiolib_cdev_register()


-- 
With Best Regards,
Andy Shevchenko