From patchwork Wed May 17 23:01:33 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: 683260 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 B1B6EC7EE22 for ; Wed, 17 May 2023 23:03:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229934AbjEQXDy (ORCPT ); Wed, 17 May 2023 19:03:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45860 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229937AbjEQXDw (ORCPT ); Wed, 17 May 2023 19:03:52 -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 BFC286EA0 for ; Wed, 17 May 2023 16:03:24 -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 1pzQAX-0007zc-Iu; 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-000wq0-Ex; 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-005UXA-5e; Thu, 18 May 2023 01:02:48 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Greg Kroah-Hartman , Gaosheng Cui , Alan Stern , Aaro Koskinen Cc: linux-usb@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 31/97] usb: gadget/fusb300_udc: Convert to platform remove callback returning void Date: Thu, 18 May 2023 01:01:33 +0200 Message-Id: <20230517230239.187727-32-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=1878; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=R4tDeXyFW9SyhShxJC0E+iv5Shp+tVOz0vyHN3o0/XE=; b=owGbwMvMwMXY3/A7olbonx/jabUkhpTUGFl+wWDhs3uOixpWcDm8z0s6tO3InGy3R9bHVScs6 Z27UU6yk9GYhYGRi0FWTJHFvnFNplWVXGTn2n+XYQaxMoFMYeDiFICJXOniYNgQnZNz7YvGDT3l qM4elbV7TFO4Iox8bignyEQ/s/xR5HS/+KzFhTNrRfYfUjLdcMIhnvPDnpX6io88ytUu9YvFsof sPfo9drvXTfPdZl9/XlgjVZnTcMWGN09SyY5VhC/qRUqIybmGVdIPrL08v3NKT2IVmnXhfUcX/5 pDUxzXussGm4Sxyly2K346uYufbX+di9mdvdcfyl+wSdBV/G7ik1pyu/RE9eonc/cs3Wh/3aMkU 0xFUWv9Ki2jGVcWNsjmRGbPXX/k6fI1R269ihEPYGWWnaH1q+fo4kbO9gzeklCFcnOBLWwvlM/O v+zu9FBnY0a37uLXB698/qoi7tYr9H6iWbZQABPPCwlfAA== 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/fusb300_udc.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/usb/gadget/udc/fusb300_udc.c b/drivers/usb/gadget/udc/fusb300_udc.c index 08ba9c8c1e67..bd03d475f927 100644 --- a/drivers/usb/gadget/udc/fusb300_udc.c +++ b/drivers/usb/gadget/udc/fusb300_udc.c @@ -1338,7 +1338,7 @@ static const struct usb_gadget_ops fusb300_gadget_ops = { .udc_stop = fusb300_udc_stop, }; -static int fusb300_remove(struct platform_device *pdev) +static void fusb300_remove(struct platform_device *pdev) { struct fusb300 *fusb300 = platform_get_drvdata(pdev); int i; @@ -1352,8 +1352,6 @@ static int fusb300_remove(struct platform_device *pdev) for (i = 0; i < FUSB300_MAX_NUM_EP; i++) kfree(fusb300->ep[i]); kfree(fusb300); - - return 0; } static int fusb300_probe(struct platform_device *pdev) @@ -1508,7 +1506,7 @@ static int fusb300_probe(struct platform_device *pdev) } static struct platform_driver fusb300_driver = { - .remove = fusb300_remove, + .remove_new = fusb300_remove, .driver = { .name = udc_name, },