linux-kernel - Re: [PATCH 05/12] bus: simple-pm-bus: Convert to platform remove callback returning void

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Message-ID: <CAMuHMdXQ1obmXwtFAic39t93pMdhOTjk_Rxz70_zx7et6g4=7w@mail.gmail.com>
Date:   Fri, 10 Nov 2023 08:51:51 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Liu Ying <victor.liu@....com>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Nick Alcock <nick.alcock@...cle.com>,
        Rob Herring <robh@...nel.org>, linux-kernel@...r.kernel.org,
        kernel@...gutronix.de
Subject: Re: [PATCH 05/12] bus: simple-pm-bus: Convert to platform remove
 callback returning void

On Thu, Nov 9, 2023 at 9:29 PM Uwe Kleine-König
<u.kleine-koenig@...gutronix.de> wrote:
> The .remove() callback for a platform driver returns an int which makes
> many driver authors wrongly assume it's possible to do error handling by
> returning an error code. However the value returned is ignored (apart
> from emitting a warning) and this typically results in resource leaks.
>
> To improve here there is a quest to make the remove callback return
> void. In the first step of this quest all drivers are converted to
> .remove_new(), which already returns void. Eventually after all drivers
> are converted, .remove_new() will be renamed to .remove().
>
> Trivially convert this driver from always returning zero in the remove
> callback to the void returning variant.
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds