linux-kernel - Re: [PATCH v2 1/7] selftests: gpio: rework and simplify test implementation

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Date:   Mon, 18 Jan 2021 07:54:37 +0800
From:   Kent Gibson <warthog618@...il.com>
To:     linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        linux-kselftest@...r.kernel.org, bgolaszewski@...libre.com,
        linus.walleij@...aro.org, shuah@...nel.org, bamv2005@...il.com
Subject: Re: [PATCH v2 1/7] selftests: gpio: rework and simplify test
 implementation

On Thu, Jan 07, 2021 at 10:57:25AM +0800, Kent Gibson wrote:
> The GPIO mockup selftests are overly complicated with separate
> implementations of the tests for sysfs and cdev uAPI, and with the cdev
> implementation being dependent on tools/gpio and libmount.
> 
> Rework the test implementation to provide a common test suite with a
> simplified pluggable uAPI interface.  The cdev implementation utilises
> the GPIO uAPI directly to remove the dependence on tools/gpio.
> The simplified uAPI interface removes the need for any file system mount
> checks in C, and so removes the dependence on libmount.
> 
> The rework also fixes the sysfs test implementation which has been broken
> since the device created in the multiple gpiochip case was split into
> separate devices.
> 
> Fixes: commit 8a39f597bcfd ("gpio: mockup: rework device probing")
> Signed-off-by: Kent Gibson <warthog618@...il.com>
> Acked-by: Linus Walleij <linus.walleij@...aro.org>
> ---

Just a note that the 'commit' should be removed from the Fixes tag.

That will be fixed in v3.

The patches have been reviewed from the gpio side - any feedback from the
selftest side?

Cheers,
Kent.