From patchwork Wed May 17 23:01:50 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: 13245871 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 C27D2C7EE23 for ; Wed, 17 May 2023 23:03:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229829AbjEQXDO (ORCPT ); Wed, 17 May 2023 19:03:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44686 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229769AbjEQXDA (ORCPT ); Wed, 17 May 2023 19:03:00 -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 4393D5588 for ; Wed, 17 May 2023 16:02:58 -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 1pzQAY-0008AL-E6; Thu, 18 May 2023 01:02:54 +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 1pzQAW-000wr9-An; Thu, 18 May 2023 01:02:52 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pzQAV-005UYG-Im; Thu, 18 May 2023 01:02:51 +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 48/97] usb: ehci-fsl: Convert to platform remove callback returning void Date: Thu, 18 May 2023 01:01:50 +0200 Message-Id: <20230517230239.187727-49-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=1852; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=aRch/8zx14C7od5k0ECgKh6hDD+WUEGbNMiS1Q6GGdM=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkZVxJ8U76kvaSc+jzHomtp/8XSt5FPsZWhG2Tj iKN6SfPrvWJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZGVcSQAKCRCPgPtYfRL+ TsRCB/9UnHKFgTcul+32abWMzEZ/Eibz+cscIQ8xqIeUZ4p4zLWbwZXtO2nziMS74XWvets3yPg /6n+7Wy5E6UiN69/iv5M/IL486Oe6cc8uplI7MbT4bbc2tE5FT20ZF8eljzgaiibsHZiuQJp7MB pqUoy0JQR4sh8X2feCHEhSxII/Z1EpH1gjx4/MgnnZL42oaqLtXOdrBwjz2y0YkQz+wcU2UaJZr g3NuTGSdEkVS+1N5ci/oN939/2kdHU0N0AiYe+GT6ZCfHpgIs/oz5qnhzZuAj9HPw5DhkR6+6kK kyZ5NRF0tMbEcytJRQmvUOoIrNNp4GuxVojJCHlqTl20KZFh 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-fsl.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index d74fa5ba845b..81d60a695510 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -684,7 +684,7 @@ static const struct ehci_driver_overrides ehci_fsl_overrides __initconst = { * * Reverses the effect of usb_hcd_fsl_probe(). */ -static int fsl_ehci_drv_remove(struct platform_device *pdev) +static void fsl_ehci_drv_remove(struct platform_device *pdev) { struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); struct usb_hcd *hcd = platform_get_drvdata(pdev); @@ -703,13 +703,11 @@ static int fsl_ehci_drv_remove(struct platform_device *pdev) if (pdata->exit) pdata->exit(pdev); usb_put_hcd(hcd); - - return 0; } static struct platform_driver ehci_fsl_driver = { .probe = fsl_ehci_drv_probe, - .remove = fsl_ehci_drv_remove, + .remove_new = fsl_ehci_drv_remove, .shutdown = usb_hcd_platform_shutdown, .driver = { .name = DRV_NAME,