From patchwork Wed May 17 23:01:03 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: 13245841 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 08105C7EE22 for ; Wed, 17 May 2023 23:02:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229687AbjEQXCr (ORCPT ); Wed, 17 May 2023 19:02:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44398 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229678AbjEQXCq (ORCPT ); Wed, 17 May 2023 19:02:46 -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 79C8F44A8 for ; Wed, 17 May 2023 16:02:45 -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 1pzQAN-0007jA-QI; Thu, 18 May 2023 01:02:43 +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 1pzQAN-000wna-1L; Thu, 18 May 2023 01:02:43 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pzQAM-005UVJ-9T; Thu, 18 May 2023 01:02:42 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 01/97] usb: c67x00-drv: Convert to platform remove callback returning void Date: Thu, 18 May 2023 01:01:03 +0200 Message-Id: <20230517230239.187727-2-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=1739; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=hPZfHp02+Vw04AFiKV3JOnpPcnGBs9VthvWfAFQ8oxI=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkZVvrY0leO0Fw+vm+tEqXqqU/v8R+H4VcsNaID lFYOzo+PaCJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZGVb6wAKCRCPgPtYfRL+ TrrLCACjffi1vVdN+eYClFjsaiJzarpQH72TbWk8zAHxgOIQk+IvHScD7UnFrxqkJ+iOsMq0NpP q8tGt5GKjp/KrAsTmObMd065U40K/f3MIsKDoqeTWre3ccjMLseZLaqIdceNwX6qC0iMd5mCFIr n4gjQFUOdeZcPgdy1Tm5IFjEL/iLVnwAUHq4Mf0v0fVdlzP7gJT1OjjvDh09Sy6WIzJebbRDRPA 9mp6HzIkguMhQU2VtpIfwfG+E315lDUzbBjAcHLj9HdfXLmGSQH48mXyNS+bWFvC2tB+EGefKjs K1Q4jJEKa2W4FpAeu1qr25lOsrR/hkTUZIrKI0y1vGQyi+Ux 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/c67x00/c67x00-drv.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/usb/c67x00/c67x00-drv.c b/drivers/usb/c67x00/c67x00-drv.c index 6db5cb1b2dbb..bb9d5d7ffefc 100644 --- a/drivers/usb/c67x00/c67x00-drv.c +++ b/drivers/usb/c67x00/c67x00-drv.c @@ -177,7 +177,7 @@ static int c67x00_drv_probe(struct platform_device *pdev) return ret; } -static int c67x00_drv_remove(struct platform_device *pdev) +static void c67x00_drv_remove(struct platform_device *pdev) { struct c67x00_device *c67x00 = platform_get_drvdata(pdev); struct resource *res; @@ -197,13 +197,11 @@ static int c67x00_drv_remove(struct platform_device *pdev) release_mem_region(res->start, resource_size(res)); kfree(c67x00); - - return 0; } static struct platform_driver c67x00_driver = { .probe = c67x00_drv_probe, - .remove = c67x00_drv_remove, + .remove_new = c67x00_drv_remove, .driver = { .name = "c67x00", },