netdev - Re: [PATCH net-next v2 1/4] net: ethernet: ti: am65-cpsw: Convert to platform remove callback returning void

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Message-ID: <83430eb6-256b-4247-9dc8-9e5c68ce76a8@kernel.org>
Date: Thu, 30 Nov 2023 11:37:06 +0200
From: Roger Quadros <rogerq@...nel.org>
To: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Cc: Siddharth Vadapalli <s-vadapalli@...com>,
 Dan Carpenter <dan.carpenter@...aro.org>, netdev@...r.kernel.org,
 kernel@...gutronix.de
Subject: Re: [PATCH net-next v2 1/4] net: ethernet: ti: am65-cpsw: Convert to
 platform remove callback returning void

On 28/11/2023 19:38, 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().
> 
> Replace the error path returning a non-zero value by an error message
> and a comment that there is more to do. With that this patch results in
> no change of behaviour in this driver apart from improving the error
> message.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

Reviewed-by: Roger Quadros <rogerq@...nel.org>