From patchwork Fri Mar 3 21:36:46 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: 13159481 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 DFCBBC7EE33 for ; Fri, 3 Mar 2023 21:37:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231824AbjCCVhi (ORCPT ); Fri, 3 Mar 2023 16:37:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48430 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231728AbjCCVhh (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 72CC262D8D 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 1pYD5p-0008Uy-Cc; Fri, 03 Mar 2023 22:37:33 +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 1pYD5o-001eAH-Np; Fri, 03 Mar 2023 22:37:32 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pYD5n-001wxK-UU; Fri, 03 Mar 2023 22:37:31 +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 04/34] watchdog: ar7: Convert to platform remove callback returning void Date: Fri, 3 Mar 2023 22:36:46 +0100 Message-Id: <20230303213716.2123717-5-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=1594; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=RkHCGC/s6zXR1s/1Ybq/smzYK3nLB5LM3xWD9STFFbE=; b=owEBbQGS/pANAwAKAcH8FHityuwJAcsmYgBkAmgdAK0AQJR6edTzhWdTCt9tTOZG+Rbtz8wgp Fd345C/v6eJATMEAAEKAB0WIQR+cioWkBis/z50pAvB/BR4rcrsCQUCZAJoHQAKCRDB/BR4rcrs CRuzB/9ThWB7myFo9F8tSt7kd06iabMEZcod1PeUwsun1hEFz8ZAbVeuEzOP/Y3LjeomyX8pukr rDPPc1O7l8L1P6POwpaX7QNN5sMNA+nceLRJg7wsFMq/TKMHCxnL3XNtwnxVMTEZoRAJPtbGd+v XvbSNzedb+hcEj9lutcu3/KrUdXVb6a7wzxt6XGRgdCmTBw7pr0P5AHqQgZ8vJKMXR6t1YA1WWB 76VRgcSy/w+nwv0fI7MtoW1j5q7v7yF+mCD6B2nmE7jWtDhOV5/2PqNe1N660jj54dSBMFWpp5G QNToA22ZG/khd1BlVT+SAvPdGOb7BK57gYziyKUbIOK2EPQL 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/ar7_wdt.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/watchdog/ar7_wdt.c b/drivers/watchdog/ar7_wdt.c index 743e171d97a3..cdcaeb0961ac 100644 --- a/drivers/watchdog/ar7_wdt.c +++ b/drivers/watchdog/ar7_wdt.c @@ -290,12 +290,11 @@ static int ar7_wdt_probe(struct platform_device *pdev) return rc; } -static int ar7_wdt_remove(struct platform_device *pdev) +static void ar7_wdt_remove(struct platform_device *pdev) { misc_deregister(&ar7_wdt_miscdev); clk_put(vbus_clk); vbus_clk = NULL; - return 0; } static void ar7_wdt_shutdown(struct platform_device *pdev) @@ -306,7 +305,7 @@ static void ar7_wdt_shutdown(struct platform_device *pdev) static struct platform_driver ar7_wdt_driver = { .probe = ar7_wdt_probe, - .remove = ar7_wdt_remove, + .remove_new = ar7_wdt_remove, .shutdown = ar7_wdt_shutdown, .driver = { .name = "ar7_wdt",