From patchwork Wed May 17 23:01:35 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: 13245876 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 94031C7EE22 for ; Wed, 17 May 2023 23:03:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229846AbjEQXDS (ORCPT ); Wed, 17 May 2023 19:03:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44850 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229785AbjEQXDE (ORCPT ); Wed, 17 May 2023 19:03:04 -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 714715BBF for ; Wed, 17 May 2023 16:02:59 -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-0007zq-VP; Thu, 18 May 2023 01:02:53 +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 1pzQAT-000wq6-HV; Thu, 18 May 2023 01:02:49 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pzQAS-005UXI-Iq; Thu, 18 May 2023 01:02:48 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Greg Kroah-Hartman , Alan Stern , Aaro Koskinen Cc: linux-usb@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 33/97] usb: gadget/mv_u3d_core: Convert to platform remove callback returning void Date: Thu, 18 May 2023 01:01:35 +0200 Message-Id: <20230517230239.187727-34-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=1837; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=zcSlVV1EYwjP63cekwZqA0HLfm1F0YfqEVQo5Z/Wm4Y=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkZVwfneonpmvi8GteqsD4IbJXE3I5GcUDIOy5f NmV2tRPotGJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZGVcHwAKCRCPgPtYfRL+ TgKbB/9+UdYlZA+GE/GOIFiyhM8etuZqb5IN+9sTFxW3lBwC91vvQiyxPhuu/IstOGgF71yVqDP C6MYYU8L2ZrKYHbT1wKHeO295h5ZZvMNwIXW+CmiEa7NH62B7Hv+6ADNes2HXXTtQH+ojFyUr5O Ob8c4RZokPBFH17Et1aZryUyRurGctny/mx24Hjz4ztylgAEqrZQbNSWG8ZaBArgJOopLqc9Ty+ uz/pg0rQR4nahP8tFCN9tEEzsBZrnV4og7jG0GIZTCNEeqoV5PgGPkD5qj4eWGqwNNvsN0n6U7R 41tXQLXRqRCmNk9IkYG3ra9ws+8gy+QI/bcKz2j5BSBgz1JH 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/mv_u3d_core.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/usb/gadget/udc/mv_u3d_core.c b/drivers/usb/gadget/udc/mv_u3d_core.c index 411b6179782c..3473048a85f5 100644 --- a/drivers/usb/gadget/udc/mv_u3d_core.c +++ b/drivers/usb/gadget/udc/mv_u3d_core.c @@ -1746,7 +1746,7 @@ static irqreturn_t mv_u3d_irq(int irq, void *dev) return IRQ_HANDLED; } -static int mv_u3d_remove(struct platform_device *dev) +static void mv_u3d_remove(struct platform_device *dev) { struct mv_u3d *u3d = platform_get_drvdata(dev); @@ -1775,8 +1775,6 @@ static int mv_u3d_remove(struct platform_device *dev) clk_put(u3d->clk); kfree(u3d); - - return 0; } static int mv_u3d_probe(struct platform_device *dev) @@ -2049,7 +2047,7 @@ static void mv_u3d_shutdown(struct platform_device *dev) static struct platform_driver mv_u3d_driver = { .probe = mv_u3d_probe, - .remove = mv_u3d_remove, + .remove_new = mv_u3d_remove, .shutdown = mv_u3d_shutdown, .driver = { .name = "mv-u3d",