linux-kernel - Re: [PATCH 16/18] perf: qcom_l2: Convert to platform remove callback returning void

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Message-ID: <37ab347b-2d94-42a9-97d0-274ed8a4c791@linaro.org>
Date: Sat, 16 Dec 2023 00:30:04 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
 Will Deacon <will@...nel.org>, Mark Rutland <mark.rutland@....com>
Cc: Andy Gross <agross@...nel.org>, Bjorn Andersson <andersson@...nel.org>,
 linux-arm-msm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 16/18] perf: qcom_l2: Convert to platform remove callback
 returning void

On 15.12.2023 14:59, Uwe Kleine-König 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: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad