From patchwork Wed May 17 23:02:10 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: 13245836 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 A5666C7EE23 for ; Wed, 17 May 2023 23:04:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229938AbjEQXEC (ORCPT ); Wed, 17 May 2023 19:04:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45958 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229941AbjEQXEA (ORCPT ); Wed, 17 May 2023 19:04:00 -0400 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 CFF5A7298 for ; Wed, 17 May 2023 16:03:27 -0700 (PDT) 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 1pzQAc-0008K5-Ib; Thu, 18 May 2023 01:02:58 +0200 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 1pzQAa-000wse-E6; Thu, 18 May 2023 01:02:56 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pzQAZ-005UZb-JE; Thu, 18 May 2023 01:02:55 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Alan Stern , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, linux-omap@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 68/97] usb: ohci-omap: Convert to platform remove callback returning void Date: Thu, 18 May 2023 01:02:10 +0200 Message-Id: <20230517230239.187727-69-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230517230239.187727-1-u.kleine-koenig@pengutronix.de> References: <20230517230239.187727-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2114; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=036YeX6s4vOUnhzrH7knkszUUtAwrp7J4f82q0cSJ4g=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkZVyNsh+T9FLx5rOt+RMHaVuQD6T7MhFW4ElcQ IjKYbMB11mJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZGVcjQAKCRCPgPtYfRL+ Tne4CAC2tHmWfrUSb8YoDi/pPWWNF50EyuYG2dcyg3cL/FYfCvTP93USlPL2jseIw9RLHH9wsol nZ4Z6wO3XV6nRR9MtPTuFCfw+JudtePL9SEOu+QVsfEGJ/gPmVIMplFmyYMJJTtVsPlCIDEDtHY M689U25sTuYG/Svb/0J8lpzKD7kTlybWpVse3+BmH4R7fucLO25K2W7LGEOoL0swXov5ggfZRDV ThFRDeSjD7LxBHTVajt1+Y4xBRDQXZBiL3qhfXyWqsmyCEBQBk6JqJdRzmlRHpcfxwrYQZDVw62 mz4zoeAS2wFqADy8xEQmQevTM+Pw+v9ad6hSuonMFHJPiDDO 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-omap@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@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/usb/host/ohci-omap.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c index c82121602511..21a6f6c55e07 100644 --- a/drivers/usb/host/ohci-omap.c +++ b/drivers/usb/host/ohci-omap.c @@ -321,7 +321,7 @@ static int ohci_hcd_omap_probe(struct platform_device *pdev) * the HCD's stop() method. It is always called from a thread * context, normally "rmmod", "apmd", or something similar. */ -static int ohci_hcd_omap_remove(struct platform_device *pdev) +static void ohci_hcd_omap_remove(struct platform_device *pdev) { struct usb_hcd *hcd = platform_get_drvdata(pdev); struct ohci_omap_priv *priv = hcd_to_ohci_omap_priv(hcd); @@ -340,7 +340,6 @@ static int ohci_hcd_omap_remove(struct platform_device *pdev) clk_unprepare(priv->usb_host_ck); clk_put(priv->usb_host_ck); usb_put_hcd(hcd); - return 0; } /*-------------------------------------------------------------------------*/ @@ -391,7 +390,7 @@ static int ohci_omap_resume(struct platform_device *dev) */ static struct platform_driver ohci_hcd_omap_driver = { .probe = ohci_hcd_omap_probe, - .remove = ohci_hcd_omap_remove, + .remove_new = ohci_hcd_omap_remove, .shutdown = usb_hcd_platform_shutdown, #ifdef CONFIG_PM .suspend = ohci_omap_suspend,