From patchwork Wed May 17 23:01:54 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: 13245884 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 CB267C7EE22 for ; Wed, 17 May 2023 23:03:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229892AbjEQXDZ (ORCPT ); Wed, 17 May 2023 19:03:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229801AbjEQXDH (ORCPT ); Wed, 17 May 2023 19:03:07 -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 16BB35BA5 for ; Wed, 17 May 2023 16:03:00 -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 1pzQAa-0008Gd-Or; Thu, 18 May 2023 01:02:56 +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 1pzQAY-000ws5-QB; Thu, 18 May 2023 01:02:54 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pzQAW-005UYY-CY; Thu, 18 May 2023 01:02:52 +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 52/97] usb: ehci-omap: Convert to platform remove callback returning void Date: Thu, 18 May 2023 01:01:54 +0200 Message-Id: <20230517230239.187727-53-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=2073; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=W/gd4eUOq8iDwcgRz4qMMy9zNeWFTEMhcBTNS6QXU7s=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkZVxTX9Ui4qRzisla9oZvKd0cyZNPzJL6XSRZN RIpIKXEzpmJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZGVcUwAKCRCPgPtYfRL+ TtvRB/9KkeTK54/RCvPgLSi6Y8E7R7Y85JFQJxhAVrtQdYEfB9NGzXMuWslCIZqs7AH1TgjU8zv /1znq8ykatoOF1ujzTods8Y7Qx5nNhObDwRGvnX0g2NapKWFL/J4vD20LNDh6X3Gu6pBt80c+Xr pwsS83NT1RoEgOt8OtFKXMXaIpt0BeRyXXyrU8sMH3369d/J7mwHS+sjw/u45h7wZbDhUNSoyyM WCh+u6qhUj6BfmHDWc4M2cL7xN3mjZhOZ9G8V8HPm2/C7NjgujCjTIYtXRkPH769Hlhn8v4FGGa 3oeYjkneSsy6Nluvs3dIUVr1VU65pPcviD3txNrz1qdgRhpk 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-usb@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@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/ehci-omap.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c index 7dd984722a7f..cb6509a735ac 100644 --- a/drivers/usb/host/ehci-omap.c +++ b/drivers/usb/host/ehci-omap.c @@ -237,7 +237,7 @@ static int ehci_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 ehci_hcd_omap_remove(struct platform_device *pdev) +static void ehci_hcd_omap_remove(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct usb_hcd *hcd = dev_get_drvdata(dev); @@ -254,8 +254,6 @@ static int ehci_hcd_omap_remove(struct platform_device *pdev) usb_put_hcd(hcd); pm_runtime_put_sync(dev); pm_runtime_disable(dev); - - return 0; } static const struct of_device_id omap_ehci_dt_ids[] = { @@ -267,7 +265,7 @@ MODULE_DEVICE_TABLE(of, omap_ehci_dt_ids); static struct platform_driver ehci_hcd_omap_driver = { .probe = ehci_hcd_omap_probe, - .remove = ehci_hcd_omap_remove, + .remove_new = ehci_hcd_omap_remove, .shutdown = usb_hcd_platform_shutdown, /*.suspend = ehci_hcd_omap_suspend, */ /*.resume = ehci_hcd_omap_resume, */