From patchwork Wed May 17 23:02:24 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: 13245919 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 591ECC7EE2A for ; Wed, 17 May 2023 23:03:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229936AbjEQXD4 (ORCPT ); Wed, 17 May 2023 19:03:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45870 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229898AbjEQXDx (ORCPT ); Wed, 17 May 2023 19:03:53 -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 1AF167281 for ; Wed, 17 May 2023 16:03:25 -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 1pzQAe-0008TN-QY; Thu, 18 May 2023 01:03:00 +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 1pzQAd-000wu6-Kp; Thu, 18 May 2023 01:02:59 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pzQAc-005UaW-Jk; Thu, 18 May 2023 01:02:58 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Chunfeng Yun , Mathias Nyman , Greg Kroah-Hartman , Matthias Brugger Cc: AngeloGioacchino Del Regno , linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, kernel@pengutronix.de Subject: [PATCH 82/97] usb: xhci-mtk: Convert to platform remove callback returning void Date: Thu, 18 May 2023 01:02:24 +0200 Message-Id: <20230517230239.187727-83-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=1879; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=IWOiTw+ADVbwJ5rlc3EcBNPlmG8kb/fjXta3x5EI4Rw=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkZVzXNaMSHdEtEKzzkk7w5YQwFiIbWHuqlshQu nviguL8UOyJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZGVc1wAKCRCPgPtYfRL+ TnUqB/9BjFkMWnUO3mbVr1gawKFsFbBa5GW+4ZsmVAoidMHlv3ANo36hWRe07WCL+I9GnPCV3ps saEbyk+f28aVcnSXBOS6yCIMwcZJjGHJRvKKDebT402O+9ypyOfQdf2XbmmunPKXPgJ7Q/8IHFy uJUZmQbbJNMRqOvjdjtlvRuU3qKU+phMWrWdt3AawKBhhmQqmzeky7ekTODZ49sc1nAUkW+cGyv T4uqWotn9Yl1Qhy0seO1FT8pRKAdrozLK64FnCEJwONY4s3N/e2vlNi2L0wCeHC/IeDrjbYsoMa wGzu00nORwTWjj/GQCAFD7HulTf92L9YyxtRscoqCcLL9ExD 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: AngeloGioacchino Del Regno --- drivers/usb/host/xhci-mtk.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c index 90cf40d6d0c3..8d9a55b0281b 100644 --- a/drivers/usb/host/xhci-mtk.c +++ b/drivers/usb/host/xhci-mtk.c @@ -673,7 +673,7 @@ static int xhci_mtk_probe(struct platform_device *pdev) return ret; } -static int xhci_mtk_remove(struct platform_device *pdev) +static void xhci_mtk_remove(struct platform_device *pdev) { struct xhci_hcd_mtk *mtk = platform_get_drvdata(pdev); struct usb_hcd *hcd = mtk->hcd; @@ -703,8 +703,6 @@ static int xhci_mtk_remove(struct platform_device *pdev) pm_runtime_disable(dev); pm_runtime_put_noidle(dev); pm_runtime_set_suspended(dev); - - return 0; } static int __maybe_unused xhci_mtk_suspend(struct device *dev) @@ -824,7 +822,7 @@ MODULE_DEVICE_TABLE(of, mtk_xhci_of_match); static struct platform_driver mtk_xhci_driver = { .probe = xhci_mtk_probe, - .remove = xhci_mtk_remove, + .remove_new = xhci_mtk_remove, .driver = { .name = "xhci-mtk", .pm = DEV_PM_OPS,