From patchwork Wed May 17 23:01:32 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: 13245863 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 23EE6C7EE22 for ; Wed, 17 May 2023 23:03:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229794AbjEQXDH (ORCPT ); Wed, 17 May 2023 19:03:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44584 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229745AbjEQXC4 (ORCPT ); Wed, 17 May 2023 19:02:56 -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 D0F105B99 for ; Wed, 17 May 2023 16:02:54 -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 1pzQAU-0007xI-Tf; Thu, 18 May 2023 01:02:50 +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 1pzQAS-000wpo-Uc; Thu, 18 May 2023 01:02:48 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pzQAS-005UX6-08; Thu, 18 May 2023 01:02:48 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Li Yang , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kernel@pengutronix.de Subject: [PATCH 30/97] usb: gadget/fsl_qe_udc: Convert to platform remove callback returning void Date: Thu, 18 May 2023 01:01:32 +0200 Message-Id: <20230517230239.187727-31-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=1939; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=En3KNUJ/RA3U3pMVZQZ/9cfHAOUWZwuPGVw0CK6AIno=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkZVwXunVuPOl3Y4CmP3Wu1ME3ZEWWeCmAkWTKp NG1QVf+ysuJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZGVcFwAKCRCPgPtYfRL+ TlXAB/4rVpLK0r2J4aiduOJ8JWUMGjwhO3kHxXTLF1NNQ8wBBg9YHetvuVr9rtxWS1BwJjHX8hK ARATuw55h2gO/poc7k5+KNAiEePT9PUrVcaR5t0Yf+XSi0vXANy+i/klgwghWVy15yMPfgQLFXW CHD8930JrfbuoR4zgvLIKYynchHmDxPqxQfIXMRiPe+1Zrjxk0gmrMdP6CmTTUDxW3H58U4lbd3 itYG8Ab7oIzB6oQvwPP+9i0ftJclDuhSLEUDzweiD4sEht8uLyYIV11FVU8bqgjE5s0wXgfFmd8 wT7XpKwWoDIjhblwq++dJhDv/UHcJmRGIGXJTvLYvbp9v8SJ 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/gadget/udc/fsl_qe_udc.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/usb/gadget/udc/fsl_qe_udc.c b/drivers/usb/gadget/udc/fsl_qe_udc.c index 3b1cc8fa30c8..9c5dc1c1a68e 100644 --- a/drivers/usb/gadget/udc/fsl_qe_udc.c +++ b/drivers/usb/gadget/udc/fsl_qe_udc.c @@ -2628,7 +2628,7 @@ static int qe_udc_resume(struct platform_device *dev) } #endif -static int qe_udc_remove(struct platform_device *ofdev) +static void qe_udc_remove(struct platform_device *ofdev) { struct qe_udc *udc = platform_get_drvdata(ofdev); struct qe_ep *ep; @@ -2679,8 +2679,6 @@ static int qe_udc_remove(struct platform_device *ofdev) /* wait for release() of gadget.dev to free udc */ wait_for_completion(&done); - - return 0; } /*-------------------------------------------------------------------------*/ @@ -2708,7 +2706,7 @@ static struct platform_driver udc_driver = { .of_match_table = qe_udc_match, }, .probe = qe_udc_probe, - .remove = qe_udc_remove, + .remove_new = qe_udc_remove, #ifdef CONFIG_PM .suspend = qe_udc_suspend, .resume = qe_udc_resume,