From patchwork Wed May 17 23:01:59 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: 13245878 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 90504C7EE2A for ; Wed, 17 May 2023 23:03:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229868AbjEQXDU (ORCPT ); Wed, 17 May 2023 19:03:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44856 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229787AbjEQXDE (ORCPT ); Wed, 17 May 2023 19:03:04 -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 D52DD6186 for ; Wed, 17 May 2023 16:02:59 -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-0008Fi-3M; 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-000wrp-Ak; 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 1pzQAX-005UYr-Bp; Thu, 18 May 2023 01:02:53 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Alan Stern , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 57/97] usb: ehci-spear: Convert to platform remove callback returning void Date: Thu, 18 May 2023 01:01:59 +0200 Message-Id: <20230517230239.187727-58-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=1988; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=DvaOUY6LEbM3ckRvrBaCtnP+gXye2ARKZWgKJ9AvF0c=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkZVxtjUUmJleVSnqb5/5Z9n93S/1YdbEMot2CR tTNvWcIVRKJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZGVcbQAKCRCPgPtYfRL+ TmreB/9ieAR/eybU0jmmtvsnicVzjTnxVo7RXZ+b647pL+HWg53a3Ocvq/nGZfLn1Ip5AIItnp0 M7ZKUh/n9KtnvmaANaDKRe4OJXvl7bLILj5642VceJ+qj3ptykg7h7DtCRTYB9ombuqjBY41U1B VONESl/yoQWZtFz8y4SVlPYSmAuNY8WcRUTVBhFhCNCwXZA9m18D8x+JH+ZaQNL1FZCAQ2R3BH+ BBbq7j8Qfsi0af71ICXmoHbXL+M74L3eTZT5dBOijflgYJ4VixPoPg/BUgMDptlZTg2wAMUBzy1 /NJzrsQcs1fD2ItJAoyknnUc2mXg2fLQITUi4V9xODRGa8zx 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-spear.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/ehci-spear.c b/drivers/usb/host/ehci-spear.c index c4ddd1022f60..1407703649be 100644 --- a/drivers/usb/host/ehci-spear.c +++ b/drivers/usb/host/ehci-spear.c @@ -124,7 +124,7 @@ static int spear_ehci_hcd_drv_probe(struct platform_device *pdev) return retval ; } -static int spear_ehci_hcd_drv_remove(struct platform_device *pdev) +static void spear_ehci_hcd_drv_remove(struct platform_device *pdev) { struct usb_hcd *hcd = platform_get_drvdata(pdev); struct spear_ehci *sehci = to_spear_ehci(hcd); @@ -134,8 +134,6 @@ static int spear_ehci_hcd_drv_remove(struct platform_device *pdev) if (sehci->clk) clk_disable_unprepare(sehci->clk); usb_put_hcd(hcd); - - return 0; } static const struct of_device_id spear_ehci_id_table[] = { @@ -146,7 +144,7 @@ MODULE_DEVICE_TABLE(of, spear_ehci_id_table); static struct platform_driver spear_ehci_hcd_driver = { .probe = spear_ehci_hcd_drv_probe, - .remove = spear_ehci_hcd_drv_remove, + .remove_new = spear_ehci_hcd_drv_remove, .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "spear-ehci",