linux-kernel - Re: [PATCH v2 0/3] gpio: Fix VLA removal fallout

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Date:   Mon, 1 Oct 2018 12:24:18 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Geert Uytterhoeven <geert+renesas@...der.be>
Cc:     Laura Abbott <labbott@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        linux-doc@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 0/3] gpio: Fix VLA removal fallout

On Thu, Sep 27, 2018 at 1:38 PM Geert Uytterhoeven
<geert+renesas@...der.be> wrote:

> This patch series fixes various (mostly harmless) issues introduced by
> commit 3027743f83f867d8 ("gpio: Remove VLA from gpiolib").
>
> As per the "one patch should fix one issue"-policy, this series contains 3
> patches, although they all have the same Fixes: tag.
>
> Changes compared to v1:
>   - Rebase on top of gpio array rework.

Patches applied, thanks Geert!

> W.r.t. propagating errors: while gpiod_set_array_value_complex() and its
> callers can now return an error code, this is currently limited to -ENOMEM.
> Actual failures setting a GPIO output value cannot be propagated, as
> gpio_chip.set() still returns void.  Do you want to change that?
> E.g. gen_74x164_set_value() can fail.

I think we discussed it at one point and said that it's something
we should fix some day, just nobody has got around to do it.

Yours,
Linus Walleij