From patchwork Fri Mar 3 21:36:56 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: 658748 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 F0778C7EE30 for ; Fri, 3 Mar 2023 21:37:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231859AbjCCVhk (ORCPT ); Fri, 3 Mar 2023 16:37:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48460 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231816AbjCCVhi (ORCPT ); Fri, 3 Mar 2023 16:37:38 -0500 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7E04462D8E for ; Fri, 3 Mar 2023 13:37:37 -0800 (PST) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pYD5r-00008s-Ku; Fri, 03 Mar 2023 22:37:35 +0100 Received: from [2a0a:edc0:0:900:1d::77] (helo=ptz.office.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pYD5r-001eB1-0g; Fri, 03 Mar 2023 22:37:35 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pYD5q-001wxx-2q; Fri, 03 Mar 2023 22:37:34 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Wim Van Sebroeck , Guenter Roeck Cc: linux-watchdog@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 14/34] watchdog: ib700wdt: Convert to platform remove callback returning void Date: Fri, 3 Mar 2023 22:36:56 +0100 Message-Id: <20230303213716.2123717-15-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230303213716.2123717-1-u.kleine-koenig@pengutronix.de> References: <20230303213716.2123717-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1620; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=qX312mK73J6n8dWMC9RwhZKepqeQdygjvCLx7DBJEpU=; b=owEBbQGS/pANAwAKAcH8FHityuwJAcsmYgBkAmhAwKsbP/lUEFd5Shvrll6qyjt20n4yuxnQr Qn0eQwlL7+JATMEAAEKAB0WIQR+cioWkBis/z50pAvB/BR4rcrsCQUCZAJoQAAKCRDB/BR4rcrs Cce7B/4mAMIDk6bNtuNdbmHiecaVavoGC67qx0j2WGWkyLbpeCnzZcTP1GP1FFmNfwTC2RHGCF9 19FTL0w2joxzqt6zNoJGoPEv8aYyp69KfCxLuOGL0LkCtWtVFbfZeuD4k6EtvMMMZvfTs0Y0Ccx s7rU9UxDspsQHx8U2ZGQVVkFYuM/3GricYWl8bMfkmi7UvoZTsA3FDlXsFLWW55drA5b4P986mx ydXpm2HfkD8bbrzQ9a8pv0wvDdE5EMeQq8kEi1CsN0IZPKYkz5gA6hlOlne/tvupsi5MetsQLCb hDWE2ghG42OmSNhZwwm1bVdhe7+uE5kMzNCXfoNaEDngQhpJ 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.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-watchdog@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@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 (mostly) ignored 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. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König --- drivers/watchdog/ib700wdt.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/watchdog/ib700wdt.c b/drivers/watchdog/ib700wdt.c index a0ddedc362fc..39ea97009abd 100644 --- a/drivers/watchdog/ib700wdt.c +++ b/drivers/watchdog/ib700wdt.c @@ -316,14 +316,13 @@ static int __init ibwdt_probe(struct platform_device *dev) return res; } -static int ibwdt_remove(struct platform_device *dev) +static void ibwdt_remove(struct platform_device *dev) { misc_deregister(&ibwdt_miscdev); release_region(WDT_START, 1); #if WDT_START != WDT_STOP release_region(WDT_STOP, 1); #endif - return 0; } static void ibwdt_shutdown(struct platform_device *dev) @@ -333,7 +332,7 @@ static void ibwdt_shutdown(struct platform_device *dev) } static struct platform_driver ibwdt_driver = { - .remove = ibwdt_remove, + .remove_new = ibwdt_remove, .shutdown = ibwdt_shutdown, .driver = { .name = DRV_NAME,