linux-kernel - Re: [PATCH 16/23] gpio: rockchip: Convert to platform remove callback returning void

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Message-ID: <4863315.31r3eYUQgx@phil>
Date:   Mon, 02 Oct 2023 00:45:50 +0200
From:   Heiko Stuebner <heiko@...ech.de>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
Cc:     Andy Shevchenko <andy@...nel.org>, linux-gpio@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 16/23] gpio: rockchip: Convert to platform remove callback
 returning void

Am Donnerstag, 28. September 2023, 09:06:59 CEST schrieb Uwe Kleine-König:
> 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: Heiko Stuebner <heiko@...ech.de>