From patchwork Wed May 17 23:02:02 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: 683262 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 74AADC7EE23 for ; Wed, 17 May 2023 23:03:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229869AbjEQXDs (ORCPT ); Wed, 17 May 2023 19:03:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45336 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229792AbjEQXDX (ORCPT ); Wed, 17 May 2023 19:03:23 -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 599966E9D for ; Wed, 17 May 2023 16:03:04 -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-0008HJ-Tu; 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 1pzQAZ-000wsA-1o; Thu, 18 May 2023 01:02:55 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pzQAX-005UZ3-TO; Thu, 18 May 2023 01:02:53 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Greg Kroah-Hartman , Rob Herring , Darren Stevens , Alan Stern , Alexander Stein Cc: linux-usb@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 60/97] usb: fsl-mph-dr-of: Convert to platform remove callback returning void Date: Thu, 18 May 2023 01:02:02 +0200 Message-Id: <20230517230239.187727-61-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=1729; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=01dextRJZ0CAKyffcG5PKCKiPJIVH454WWOQH4hfJE0=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkZVxwDO2v3AQuDX+mJQD5X9Rs0+aHZXZCQmvjM kIPR0EnavCJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZGVccAAKCRCPgPtYfRL+ Tof0B/9F7KuOdDF0hnAeEd0FxcHgbY2i2RJ4uHHOduaymegMNmux+oU9kbkboXzcKy5YsP+8ovl 54ipAUUNru87EdNhocGsH7Axw9kLw7xv1jBfxSnG/xfjz6nzskdiI767XA4pPb7imyF1KYzPOPA YaANfcTq0nic6RoPFlfBS6juxNXCG0J9y6VsjqO9LJuN9IEJ0L2x5DqW5245uduoaMXNQLJpQNB uvce/2lqPC9aWiEky1Mw9fAncUmHhXRyFQXBhquVN/dINOy9vZ6h0exmO9A5N6Esd7OOVmwU3Tk mNDmxnOH39sWVZi00Fng8EEr07xg8BNcwABfG0AWf+F4ouzR 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/fsl-mph-dr-of.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c index 9db909d12354..a9877f2569f4 100644 --- a/drivers/usb/host/fsl-mph-dr-of.c +++ b/drivers/usb/host/fsl-mph-dr-of.c @@ -265,10 +265,9 @@ static int __unregister_subdev(struct device *dev, void *d) return 0; } -static int fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev) +static void fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev) { device_for_each_child(&ofdev->dev, NULL, __unregister_subdev); - return 0; } #ifdef CONFIG_PPC_MPC512x @@ -362,7 +361,7 @@ static struct platform_driver fsl_usb2_mph_dr_driver = { .of_match_table = fsl_usb2_mph_dr_of_match, }, .probe = fsl_usb2_mph_dr_of_probe, - .remove = fsl_usb2_mph_dr_of_remove, + .remove_new = fsl_usb2_mph_dr_of_remove, }; module_platform_driver(fsl_usb2_mph_dr_driver);