linux-kernel - Re: [PATCH 1/3] auxdisplay: cfag12864bfb: Convert to platform remove callback returning void

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Date: Tue, 12 Mar 2024 11:47:26 +0100
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Cc: Andy Shevchenko <andy@...nel.org>, Miguel Ojeda <ojeda@...nel.org>, 
	Geert Uytterhoeven <geert@...ux-m68k.org>, linux-kernel@...r.kernel.org, kernel@...gutronix.de
Subject: Re: [PATCH 1/3] auxdisplay: cfag12864bfb: 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>

Acked-by: Miguel Ojeda <ojeda@...nel.org>

Thanks!

Cheers,
Miguel