From patchwork Fri Mar 3 21:36:54 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: 13159483 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 59D11C7EE45 for ; Fri, 3 Mar 2023 21:37:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231856AbjCCVhj (ORCPT ); Fri, 3 Mar 2023 16:37:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48442 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231808AbjCCVhh (ORCPT ); Fri, 3 Mar 2023 16:37:37 -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 D118D6233F for ; Fri, 3 Mar 2023 13:37:36 -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-00006x-1Y; 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 1pYD5q-001eAp-CC; Fri, 03 Mar 2023 22:37:34 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pYD5p-001wxo-M7; Fri, 03 Mar 2023 22:37:33 +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 12/34] watchdog: gef: Convert to platform remove callback returning void Date: Fri, 3 Mar 2023 22:36:54 +0100 Message-Id: <20230303213716.2123717-13-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=1591; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=Br27F/QZG9StXFuBEXX2hkDJ3aauh97InfFDgn1gzWQ=; b=owEBbQGS/pANAwAKAcH8FHityuwJAcsmYgBkAmg52NFb9aGgFZQvbXSt8xGFAoDkvm9mS7NsV iXhgUKGwQiJATMEAAEKAB0WIQR+cioWkBis/z50pAvB/BR4rcrsCQUCZAJoOQAKCRDB/BR4rcrs CdFjCACY/d/7OMkMiNCDECYAJ6zih5OiEAtBZlb5JItHyJjHHDPGTjT8mYPBbGrkDmMatslV9/b l21KYcNHZrRyrbSqxQtjfSz6Kk/aLYlrjmxuk+wz+QrEygNUxpPr38DJqgvomuSlVc64UtI6VaU W5xoQJkCc6NTOWr9Kvf38zczFdaPpKLqUEh5zPe7e+VAAqYBNGpsASzBnCnHcQhbLQ9PQwq94E3 RojWsDjLuSJcYXj3Tk41YyA9TLWQDKww59p3BRXMvGtuxkgtMAMhY4Zxv4dnELGBLoPOziK5pT3 aDpoXiEJh+YCZ0qn5J92uaA66FBdbqUJl14jErNvs4SAB2O8 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 Reviewed-by: Guenter Roeck --- drivers/watchdog/gef_wdt.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/watchdog/gef_wdt.c b/drivers/watchdog/gef_wdt.c index df5406aa7d25..97afc907f659 100644 --- a/drivers/watchdog/gef_wdt.c +++ b/drivers/watchdog/gef_wdt.c @@ -283,15 +283,13 @@ static int gef_wdt_probe(struct platform_device *dev) return misc_register(&gef_wdt_miscdev); } -static int gef_wdt_remove(struct platform_device *dev) +static void gef_wdt_remove(struct platform_device *dev) { misc_deregister(&gef_wdt_miscdev); gef_wdt_handler_disable(); iounmap(gef_wdt_regs); - - return 0; } static const struct of_device_id gef_wdt_ids[] = { @@ -308,7 +306,7 @@ static struct platform_driver gef_wdt_driver = { .of_match_table = gef_wdt_ids, }, .probe = gef_wdt_probe, - .remove = gef_wdt_remove, + .remove_new = gef_wdt_remove, }; static int __init gef_wdt_init(void)