From patchwork Wed May 17 23:01:14 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: 13245845 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 EAD4FC7EE2D for ; Wed, 17 May 2023 23:02:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229719AbjEQXCx (ORCPT ); Wed, 17 May 2023 19:02:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44476 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229704AbjEQXCu (ORCPT ); Wed, 17 May 2023 19:02:50 -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 855CD4C2C for ; Wed, 17 May 2023 16:02:48 -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 1pzQAQ-0007lW-6R; Thu, 18 May 2023 01:02:46 +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 1pzQAP-000woL-2g; Thu, 18 May 2023 01:02:45 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pzQAO-005UVz-GS; Thu, 18 May 2023 01:02:44 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Thinh Nguyen , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 12/97] usb: core: Convert to platform remove callback returning void Date: Thu, 18 May 2023 01:01:14 +0200 Message-Id: <20230517230239.187727-13-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=1742; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=UQPIKGxF0Is6mnxd/N50Cs85fyXZgDWimnfytjHHXOs=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkZVv41mQmc5dqZ9NKumQZxTGAw7IupPSEA97Av YoAmUVqk3uJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZGVb+AAKCRCPgPtYfRL+ ToIHB/9vlnbbIyD3EiGqMD8PZV4Extr8fGUzEm6poS20lqnkgXmh1+dTqFMebWOTqy2V45Oy18j UGEWuWG4S7kE+gwF1uXeGEwE2FtmSvoPR6+sxyrSOZ/q2qtyxYcejrB7pXuGBLfm9Ek2q+CsmEW eQyewtRTgMJi10NsEIwQhRqCiuQ3ndVVIcMcLmbOVHC0syQeu6MeGGCcdN5x1t0UFMoN4ydB5Pi 59I2QvCqMcEjF1tLKvEVcK+tCP/i7JI5npwtTXJ5vcrnGr1c8gmxFAB8BTgdnuyLc7Jisw7oc/B 0mjU1qIxgzihKsMKlws91USysLm+bqrRBHgEmVtP6gBEat8i 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 Acked-by: Thinh Nguyen --- drivers/usb/dwc3/core.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 0beaab932e7d..cd3126672306 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1913,7 +1913,7 @@ static int dwc3_probe(struct platform_device *pdev) return ret; } -static int dwc3_remove(struct platform_device *pdev) +static void dwc3_remove(struct platform_device *pdev) { struct dwc3 *dwc = platform_get_drvdata(pdev); @@ -1935,8 +1935,6 @@ static int dwc3_remove(struct platform_device *pdev) if (dwc->usb_psy) power_supply_put(dwc->usb_psy); - - return 0; } #ifdef CONFIG_PM @@ -2247,7 +2245,7 @@ MODULE_DEVICE_TABLE(acpi, dwc3_acpi_match); static struct platform_driver dwc3_driver = { .probe = dwc3_probe, - .remove = dwc3_remove, + .remove_new = dwc3_remove, .driver = { .name = "dwc3", .of_match_table = of_match_ptr(of_dwc3_match),