From patchwork Fri Oct 20 07:55:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= X-Patchwork-Id: 736437 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 5E94DCDB474 for ; Fri, 20 Oct 2023 07:56:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1376463AbjJTH4y (ORCPT ); Fri, 20 Oct 2023 03:56:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44584 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376472AbjJTH4n (ORCPT ); Fri, 20 Oct 2023 03:56:43 -0400 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [IPv6:2a0a:edc0:2:b01:1d::104]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 206E2D6A for ; Fri, 20 Oct 2023 00:56:42 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qtkN4-0003SF-9o; Fri, 20 Oct 2023 09:56:38 +0200 Received: from [2a0a:edc0:0:900:1d::77] (helo=ptz.office.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qtkN3-002yVk-1k; Fri, 20 Oct 2023 09:56:37 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qtkN2-002OJx-Ou; Fri, 20 Oct 2023 09:56:36 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Herbert Xu , "David S. Miller" Cc: linux-crypto@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 28/42] crypto: n2_core - Convert to platform remove callback returning void Date: Fri, 20 Oct 2023 09:55:50 +0200 Message-ID: <20231020075521.2121571-72-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231020075521.2121571-44-u.kleine-koenig@pengutronix.de> References: <20231020075521.2121571-44-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2526; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=T4Bo9aTX+eT4XZxS9Uehb5DGE6qoa9vfLkG/lQm8P1E=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlMjKKp+r8wGWeqt4VxnCEQ9YZACBc7wPHtBPkm kRXZyTwAs6JATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZTIyigAKCRCPgPtYfRL+ TvgbCACSH5chw0ZKkC5YttaWCAz0z59H0nBEzc3DIYKZIwiWniZ05ijUkV9nMcd/oFBbdHuvOCF W7xAhlFdBHu4d79xUI6UxPiYJeF7Qcz3bN80LxZ+w6n82xsPwDcnaBXyPpHzC9T9iS/uuASxH6M 0SH+/XHcXUkBB/GWC59LGZ+/0AL/O+AhX1sZKHeJm6X3Q9GGZAlhTnH8ygH4Je+Egyj+659E6QT iKctioi0qMeQ1C/F3TaWCZrfhid9U65wxW0seOoJVYy14TZJHgAIl3k/KwdpvaZrC7h90des3+e //lnphFKS/TTI8kS2hVD1vnmxFIym58Urigf1RcEvt4IEavY X-Developer-Key: i=u.kleine-koenig@pengutronix.de; a=openpgp; fpr=0D2511F322BFAB1C1580266BE2DCDD9132669BD6 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-crypto@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org 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 --- drivers/crypto/n2_core.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/crypto/n2_core.c b/drivers/crypto/n2_core.c index d5a32d71a3e9..caea98622c33 100644 --- a/drivers/crypto/n2_core.c +++ b/drivers/crypto/n2_core.c @@ -2011,7 +2011,7 @@ static int n2_crypto_probe(struct platform_device *dev) return err; } -static int n2_crypto_remove(struct platform_device *dev) +static void n2_crypto_remove(struct platform_device *dev) { struct n2_crypto *np = dev_get_drvdata(&dev->dev); @@ -2022,8 +2022,6 @@ static int n2_crypto_remove(struct platform_device *dev) release_global_resources(); free_n2cp(np); - - return 0; } static struct n2_mau *alloc_ncp(void) @@ -2109,7 +2107,7 @@ static int n2_mau_probe(struct platform_device *dev) return err; } -static int n2_mau_remove(struct platform_device *dev) +static void n2_mau_remove(struct platform_device *dev) { struct n2_mau *mp = dev_get_drvdata(&dev->dev); @@ -2118,8 +2116,6 @@ static int n2_mau_remove(struct platform_device *dev) release_global_resources(); free_ncp(mp); - - return 0; } static const struct of_device_id n2_crypto_match[] = { @@ -2146,7 +2142,7 @@ static struct platform_driver n2_crypto_driver = { .of_match_table = n2_crypto_match, }, .probe = n2_crypto_probe, - .remove = n2_crypto_remove, + .remove_new = n2_crypto_remove, }; static const struct of_device_id n2_mau_match[] = { @@ -2173,7 +2169,7 @@ static struct platform_driver n2_mau_driver = { .of_match_table = n2_mau_match, }, .probe = n2_mau_probe, - .remove = n2_mau_remove, + .remove_new = n2_mau_remove, }; static struct platform_driver * const drivers[] = {