From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 45448C001DF for ; Fri, 20 Oct 2023 10:13:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1376722AbjJTKN3 convert rfc822-to-8bit (ORCPT ); Fri, 20 Oct 2023 06:13:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50984 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376842AbjJTKNN (ORCPT ); Fri, 20 Oct 2023 06:13:13 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id A71B5D72 for ; Fri, 20 Oct 2023 03:12:39 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3EB082F4; Fri, 20 Oct 2023 03:13:20 -0700 (PDT) Received: from donnerap.manchester.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id A0FDF3F5A1; Fri, 20 Oct 2023 03:12:37 -0700 (PDT) Date: Fri, 20 Oct 2023 11:12:35 +0100 From: Andre Przywara To: Uwe =?UTF-8?B?S2xlaW5lLUvDtm5pZw==?= Cc: Herbert Xu , "David S. Miller" , Corentin Labbe , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Jonathan Corbet , Rob Herring , linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, kernel@pengutronix.de Subject: Re: [PATCH 03/42] crypto: sun8i-ss - Convert to platform remove callback returning void Message-ID: <20231020111235.413fc617@donnerap.manchester.arm.com> In-Reply-To: <20231020075521.2121571-47-u.kleine-koenig@pengutronix.de> References: <20231020075521.2121571-44-u.kleine-koenig@pengutronix.de> <20231020075521.2121571-47-u.kleine-koenig@pengutronix.de> Organization: ARM X-Mailer: Claws Mail 3.18.0 (GTK+ 2.24.32; aarch64-unknown-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org On Fri, 20 Oct 2023 09:55:25 +0200 Uwe Kleine-König wrote: Hi, > 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 Reviewed-by: Andre Przywara Cheers, Andre > --- > drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c > index 4a9587285c04..f14c60359d19 100644 > --- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c > +++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c > @@ -908,7 +908,7 @@ static int sun8i_ss_probe(struct platform_device *pdev) > return err; > } > > -static int sun8i_ss_remove(struct platform_device *pdev) > +static void sun8i_ss_remove(struct platform_device *pdev) > { > struct sun8i_ss_dev *ss = platform_get_drvdata(pdev); > > @@ -921,8 +921,6 @@ static int sun8i_ss_remove(struct platform_device *pdev) > sun8i_ss_free_flows(ss, MAXFLOW - 1); > > sun8i_ss_pm_exit(ss); > - > - return 0; > } > > static const struct of_device_id sun8i_ss_crypto_of_match_table[] = { > @@ -936,7 +934,7 @@ MODULE_DEVICE_TABLE(of, sun8i_ss_crypto_of_match_table); > > static struct platform_driver sun8i_ss_driver = { > .probe = sun8i_ss_probe, > - .remove = sun8i_ss_remove, > + .remove_new = sun8i_ss_remove, > .driver = { > .name = "sun8i-ss", > .pm = &sun8i_ss_pm_ops,