linux-kernel - Re: [PATCH 2/3] auxdisplay: hd44780: Convert to platform remove callback returning void

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Message-ID: <CAMuHMdU+fNUDOq95pA+kEnsyeTALT+xEYvOM0K=Y24H050zrFA@mail.gmail.com>
Date: Tue, 12 Mar 2024 09:16:18 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Cc: Andy Shevchenko <andy@...nel.org>, linux-kernel@...r.kernel.org, kernel@...gutronix.de
Subject: Re: [PATCH 2/3] auxdisplay: hd44780: Convert to platform remove
 callback returning void

On Mon, Mar 11, 2024 at 10:59 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@...ux-m68k.org>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68korg

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