linux-kernel - Re: [PATCH] selftests: gpio: gpio-mockup-chardev GPIOHANDLE_REQUEST

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Date:   Thu, 14 Jun 2018 16:42:23 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Rafael David Tinoco <rafael.tinoco@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Bamvor Jian Zhang <bamv2005@...il.com>, shuah@...nel.org,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        linux-kselftest@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] selftests: gpio: gpio-mockup-chardev GPIOHANDLE_REQUEST_OUTPUT
 fix

On Wed, Jun 6, 2018 at 7:44 PM, Rafael David Tinoco
<rafael.tinoco@...aro.org> wrote:

> Following logic from commit: 22f6592b23, GPIOHANDLE_REQUEST_OUTPUT
> should handle errors same way as GPIOHANDLE_REQUEST_INPUT does, or else
> the following error occurs:
>
> gpio-mockup-chardev: gpio<gpiochip1> line<0> test flag<0x2> value<0>: No
> such file or directory
>
> despite the real result of gpio_pin_test(), gpio_debugfs_get() and
> gpiotools_request_linehandle() functions.
>
> Signed-off-by: Rafael David Tinoco <rafael.tinoco@...aro.org>

Bartosz, does this look OK to you?

Yours,
Linus Walleij