From patchwork Wed May 17 23:01:40 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: 13245866 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 65A81C7EE22 for ; Wed, 17 May 2023 23:03:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229795AbjEQXDJ (ORCPT ); Wed, 17 May 2023 19:03:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44590 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229693AbjEQXC5 (ORCPT ); Wed, 17 May 2023 19:02:57 -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 74D835B9C for ; Wed, 17 May 2023 16:02:55 -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 1pzQAW-00083O-CE; Thu, 18 May 2023 01:02:52 +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 1pzQAU-000wqO-9V; Thu, 18 May 2023 01:02:50 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pzQAT-005UXe-K2; Thu, 18 May 2023 01:02:49 +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 38/97] usb: gadget/r8a66597-udc: Convert to platform remove callback returning void Date: Thu, 18 May 2023 01:01:40 +0200 Message-Id: <20230517230239.187727-39-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=1984; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=NDY1z3UVJjfsaLxnsnm+4fEeVi8s19FlTEjtWSTeQ7k=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkZVw0I+F8ByazoxLSC9g0HQrr8uNUAgZnhICwP UxKXtu60yyJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZGVcNAAKCRCPgPtYfRL+ TqBjCACKN1ypIP6SHzHgNtFeviP4t+GsU6SPJPCGxTJ0yNrwh10fyzqXmObmeUSQu4JhCOC8foo u4ho6aHlBt9pHmJk3TeAXsXyHBmTjj7wm8TBG6JRPCV51XBiDx4JIqwInUqWog4qEu/9gUHrPui 2xqiCCPlgNAMHSiadhY2JO4qYPH+bYyexUVn5wtJqWjWpRJrfx7vctRdDXQoLYFW2MY+2dfHzwl LzwcD+/Ck+QazQu4Nzk5Fn+C36Ki2y6FtBuW9O9Xzh84OoaPP7wjDQ7dD2/iL+k9bhQVkLAUcrI FORzQovAophFkJq0QU14OF53AAgC79fpyLAUpf/5SBe/uXZa 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 Reviewed-by: Yoshihiro Shimoda --- drivers/usb/gadget/udc/r8a66597-udc.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/usb/gadget/udc/r8a66597-udc.c b/drivers/usb/gadget/udc/r8a66597-udc.c index 38e4d6b505a0..51b665f15c8e 100644 --- a/drivers/usb/gadget/udc/r8a66597-udc.c +++ b/drivers/usb/gadget/udc/r8a66597-udc.c @@ -1805,7 +1805,7 @@ static const struct usb_gadget_ops r8a66597_gadget_ops = { .set_selfpowered = r8a66597_set_selfpowered, }; -static int r8a66597_remove(struct platform_device *pdev) +static void r8a66597_remove(struct platform_device *pdev) { struct r8a66597 *r8a66597 = platform_get_drvdata(pdev); @@ -1816,8 +1816,6 @@ static int r8a66597_remove(struct platform_device *pdev) if (r8a66597->pdata->on_chip) { clk_disable_unprepare(r8a66597->clk); } - - return 0; } static void nop_completion(struct usb_ep *ep, struct usb_request *r) @@ -1966,7 +1964,7 @@ static int r8a66597_probe(struct platform_device *pdev) /*-------------------------------------------------------------------------*/ static struct platform_driver r8a66597_driver = { - .remove = r8a66597_remove, + .remove_new = r8a66597_remove, .driver = { .name = udc_name, },