From patchwork Fri Mar 3 21:37:11 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: 658740 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 89B7DC87FDD for ; Fri, 3 Mar 2023 21:37:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231842AbjCCVht (ORCPT ); Fri, 3 Mar 2023 16:37:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48604 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231871AbjCCVhn (ORCPT ); Fri, 3 Mar 2023 16:37:43 -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 E9AC162DA7 for ; Fri, 3 Mar 2023 13:37:41 -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 1pYD5v-0000LQ-MN; Fri, 03 Mar 2023 22:37:39 +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 1pYD5u-001eCE-7w; Fri, 03 Mar 2023 22:37:38 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pYD5t-001wyw-G1; Fri, 03 Mar 2023 22:37:37 +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 29/34] watchdog: sa1100: Convert to platform remove callback returning void Date: Fri, 3 Mar 2023 22:37:11 +0100 Message-Id: <20230303213716.2123717-30-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=1511; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=4Hz0VcW4tHHMgapWfyP+rDds0Bu0FqD2STrYvV0j9V8=; b=owEBbQGS/pANAwAKAcH8FHityuwJAcsmYgBkAmh0b12GJblzUyjriMtZJ0lZTdlpDxCWIOu/l 1XttkY5N9iJATMEAAEKAB0WIQR+cioWkBis/z50pAvB/BR4rcrsCQUCZAJodAAKCRDB/BR4rcrs CcbQB/47uNgTTb/5/71HWfNfOa1YEv5SqjvlmlYOtQ1ANYtN9sn1OlEEpc12vQwkhyylPPMDDfK 6Mx5Pigl96RWD5trhq9JKBXGO7KzjWVtcUPg4f8LVMRpTrlGL0rXOQRCKIRKx1WCqTG+OcqWQxE jZYX7yCJRT9gnTC8u0I0zd+qVgM2RXWwuae/QR1P6HeDVHhND2lu2pmwocxLXiRncWQ282oMvaA ixD03N15qlK0xZo3byEVkOjsLkvSpGcGSqzyh6LfsDh0vVPBA2/n7SRl4Vb6oVV+1YHrWKFQlEJ Kq+T1oUmyWDtGGo+gKIHYYwhXi7yXn5wH78HSKNlepqlkoFH 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/sa1100_wdt.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/watchdog/sa1100_wdt.c b/drivers/watchdog/sa1100_wdt.c index 82ac5d19f519..5d2df008b92a 100644 --- a/drivers/watchdog/sa1100_wdt.c +++ b/drivers/watchdog/sa1100_wdt.c @@ -229,19 +229,17 @@ static int sa1100dog_probe(struct platform_device *pdev) return ret; } -static int sa1100dog_remove(struct platform_device *pdev) +static void sa1100dog_remove(struct platform_device *pdev) { misc_deregister(&sa1100dog_miscdev); clk_disable_unprepare(clk); clk_put(clk); - - return 0; } static struct platform_driver sa1100dog_driver = { .driver.name = "sa1100_wdt", .probe = sa1100dog_probe, - .remove = sa1100dog_remove, + .remove_new = sa1100dog_remove, }; module_platform_driver(sa1100dog_driver);