From patchwork Mon Sep 18 13:36:42 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: 724587 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 49D7CCD13D2 for ; Mon, 18 Sep 2023 16:33:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230291AbjIRQd7 (ORCPT ); Mon, 18 Sep 2023 12:33:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59086 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230215AbjIRQdd (ORCPT ); Mon, 18 Sep 2023 12:33:33 -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 79C0C25455 for ; Mon, 18 Sep 2023 09:15:26 -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 1qiER4-0001wt-1U; Mon, 18 Sep 2023 15:37:10 +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 1qiER3-007EYr-Bd; Mon, 18 Sep 2023 15:37:09 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qiER3-002fWk-2W; Mon, 18 Sep 2023 15:37:09 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Sebastian Reichel Cc: linux-pm@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 14/32] power: supply: ipaq_micro_battery: Convert to platform remove callback returning void Date: Mon, 18 Sep 2023 15:36:42 +0200 Message-Id: <20230918133700.1254499-15-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230918133700.1254499-1-u.kleine-koenig@pengutronix.de> References: <20230918133700.1254499-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1959; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=10tTuouqM0XxEjfGh5+rhGaANufdmub8QOVolPz9Ac0=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlCFJgxPa9j0raRKc9m+G6veBrFGEXqD+KSKby3 sCeycc9TkWJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZQhSYAAKCRCPgPtYfRL+ ThRQCACIrZOMqLaw3uRUjVmRHICNZINY2wbuw9Ekjz/t6Ori0Yv7jXfJJ4PcbliI0MhbKf1wQB8 WLFi111zR31IonJQJlTzcXwG2ZjdOwszirihNwyq/uh8eRdOoDirJl5fNok1CMbpsSI9sMNIktf iYabxLGJpUpeVJdXAuwLtFTM4oNlbBxKwQ0+mKFiUNPth4u64fofPjXQZ6+NVgKchvdz75IE6FG Ukl+1ca7TOUdtWibIOzZMwszYICs6nYtT0XswWq6KwiJLlCQ0DITuwX6qzbniYzGt03XcVENLX5 nAcCgHT5HBn8yx9DJoRbVLCRxPhrvaCTpUFNkUwkGXCTq0kU 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-pm@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@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() is 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/power/supply/ipaq_micro_battery.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/power/supply/ipaq_micro_battery.c b/drivers/power/supply/ipaq_micro_battery.c index 192d9db0fb00..66cc649f702a 100644 --- a/drivers/power/supply/ipaq_micro_battery.c +++ b/drivers/power/supply/ipaq_micro_battery.c @@ -265,7 +265,7 @@ static int micro_batt_probe(struct platform_device *pdev) return ret; } -static int micro_batt_remove(struct platform_device *pdev) +static void micro_batt_remove(struct platform_device *pdev) { struct micro_battery *mb = platform_get_drvdata(pdev); @@ -274,8 +274,6 @@ static int micro_batt_remove(struct platform_device *pdev) power_supply_unregister(micro_batt_power); cancel_delayed_work_sync(&mb->update); destroy_workqueue(mb->wq); - - return 0; } static int __maybe_unused micro_batt_suspend(struct device *dev) @@ -304,7 +302,7 @@ static struct platform_driver micro_batt_device_driver = { .pm = µ_batt_dev_pm_ops, }, .probe = micro_batt_probe, - .remove = micro_batt_remove, + .remove_new = micro_batt_remove, }; module_platform_driver(micro_batt_device_driver);