From patchwork Wed May 17 23:01:49 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: 683222 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 EE39FC7EE22 for ; Wed, 17 May 2023 23:04:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229978AbjEQXEH (ORCPT ); Wed, 17 May 2023 19:04:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46090 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229966AbjEQXEG (ORCPT ); Wed, 17 May 2023 19:04:06 -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 BA97B7685 for ; Wed, 17 May 2023 16:03:36 -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 1pzQAY-00089k-GS; Thu, 18 May 2023 01:02:54 +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 1pzQAW-000wr5-51; Thu, 18 May 2023 01:02:52 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pzQAV-005UYC-D2; Thu, 18 May 2023 01:02:51 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Alan Stern , Greg Kroah-Hartman , Krzysztof Kozlowski Cc: Alim Akhtar , linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 47/97] usb: ehci-exynos: Convert to platform remove callback returning void Date: Thu, 18 May 2023 01:01:49 +0200 Message-Id: <20230517230239.187727-48-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=1894; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=sdaNvSMllo7FJ63Vr0mA/chKoNhlxVQIVWkT2Ljhub0=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkZVxDmaaDrhv91DXiU7i7NVl741g+M8SJbCsTJ Sgb1xbXKyWJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZGVcQwAKCRCPgPtYfRL+ TjyrB/41RYWaqrAk8sl+HM93vnNGtFVoBUcC77MY3ceLYEqZUUrBJt/euLJ2rjmPFdgW/23Wm1N XUR7azX1aPOfT+RMfhEK4vN6b589iblCvhwm7iJNdPpMYj/49gKGTJ5Hrk9Ji35s6skSvu9wszp KvYXYT7rVOd0KhkQO5I3s9PdZ7lBiOs1QafTP2lx5w1Oop8hXt13J0QrFeWNmqfuDR1p+yXly13 dCM48XE22T21JYQq0gf7b0jY6PsAdKJPw+1urv7MlNGK9Vpb/TKn2vdJ1PWCE8CoWi6tD3xJWJ3 Yq9zRCuS48sCSXn6OU/LGo/alMlCLO2dyDNJkpjDD41dQrGt 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-samsung-soc@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@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/host/ehci-exynos.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c index 47c9f06c3d84..20f8c0ec6810 100644 --- a/drivers/usb/host/ehci-exynos.c +++ b/drivers/usb/host/ehci-exynos.c @@ -230,7 +230,7 @@ static int exynos_ehci_probe(struct platform_device *pdev) return err; } -static int exynos_ehci_remove(struct platform_device *pdev) +static void exynos_ehci_remove(struct platform_device *pdev) { struct usb_hcd *hcd = platform_get_drvdata(pdev); struct exynos_ehci_hcd *exynos_ehci = to_exynos_ehci(hcd); @@ -244,8 +244,6 @@ static int exynos_ehci_remove(struct platform_device *pdev) clk_disable_unprepare(exynos_ehci->clk); usb_put_hcd(hcd); - - return 0; } #ifdef CONFIG_PM @@ -311,7 +309,7 @@ MODULE_DEVICE_TABLE(of, exynos_ehci_match); static struct platform_driver exynos_ehci_driver = { .probe = exynos_ehci_probe, - .remove = exynos_ehci_remove, + .remove_new = exynos_ehci_remove, .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "exynos-ehci",