From patchwork Mon Sep 18 20:42:21 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: 13390396 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 1AC1BCD13D2 for ; Mon, 18 Sep 2023 20:43:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229478AbjIRUnO (ORCPT ); Mon, 18 Sep 2023 16:43:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44426 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229632AbjIRUnN (ORCPT ); Mon, 18 Sep 2023 16:43:13 -0400 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [IPv6:2a0a:edc0:2:b01:1d::104]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C15F9119 for ; Mon, 18 Sep 2023 13:43:07 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qiL4y-0007TN-C4; Mon, 18 Sep 2023 22:42:48 +0200 Received: from [2a0a:edc0:0:900:1d::77] (helo=ptz.office.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qiL4x-007Ikd-Lh; Mon, 18 Sep 2023 22:42:47 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qiL4x-002mqN-B3; Mon, 18 Sep 2023 22:42:47 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Florian Fainelli , Grygorii Strashko , Marc Kleine-Budde , Nathan Chancellor , Nathan Huckleberry , Geert Uytterhoeven , Bhupesh Sharma , Wei Fang , Andrew Lunn , Rob Herring , Thomas Gleixner , Sebastian Andrzej Siewior , Arnd Bergmann , netdev@vger.kernel.org, kernel@pengutronix.de, linux-omap@vger.kernel.org Subject: [PATCH net-next 49/54] net: ethernet: ti: Convert to platform remove callback returning void Date: Mon, 18 Sep 2023 22:42:21 +0200 Message-Id: <20230918204227.1316886-50-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230918204227.1316886-1-u.kleine-koenig@pengutronix.de> References: <20230918204227.1316886-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=5112; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=GAzMPmTXiHRYGL72nZp+bTQHer1MdGrU4/9n6vQGbZE=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlCLYbKcwv4juvlGF2GyxUT/eBKwQwSyvbq2/GL QtGUYa2R9GJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZQi2GwAKCRCPgPtYfRL+ ThBqB/0QH054ARQK0eHP4ODSndxB3JFel3Ybp97YrfdkNGp4IMU5XaW5dHQLtvLou2PfI2bGp07 oQVblhLa+cb79spIxftIXiqSKicm+zcliwW9cr6sZa5wYnVlPCj28prPcJs8d0wn6Q/J0VSVXFO B0RBY3vtt9aeK5yFdKJGt7Ka0SPBNJsKq5Rs9jRzZABH3UM3F1NoAAR4LE0/j4wQCDIMB8erkxG l/UNVpxjmo3zGYnavkPUO2ai6KDVb+bmtwk8jMA53w83jZp7hw5m7bSZOiK0ogWcEhpyJkiN7FI RvfeyQq7v4scquY3H4ikvZDR0/9+w1iAlHDCyuJCxPDxLQyv 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.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-omap@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@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 these drivers from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König Reviewed-by: Florian Fainelli # cpmac --- drivers/net/ethernet/ti/cpmac.c | 6 ++---- drivers/net/ethernet/ti/davinci_emac.c | 6 ++---- drivers/net/ethernet/ti/davinci_mdio.c | 6 ++---- drivers/net/ethernet/ti/netcp_core.c | 5 ++--- 4 files changed, 8 insertions(+), 15 deletions(-) diff --git a/drivers/net/ethernet/ti/cpmac.c b/drivers/net/ethernet/ti/cpmac.c index 80eeeb463c4f..bc9b5d18427d 100644 --- a/drivers/net/ethernet/ti/cpmac.c +++ b/drivers/net/ethernet/ti/cpmac.c @@ -1151,14 +1151,12 @@ static int cpmac_probe(struct platform_device *pdev) return rc; } -static int cpmac_remove(struct platform_device *pdev) +static void cpmac_remove(struct platform_device *pdev) { struct net_device *dev = platform_get_drvdata(pdev); unregister_netdev(dev); free_netdev(dev); - - return 0; } static struct platform_driver cpmac_driver = { @@ -1166,7 +1164,7 @@ static struct platform_driver cpmac_driver = { .name = "cpmac", }, .probe = cpmac_probe, - .remove = cpmac_remove, + .remove_new = cpmac_remove, }; int __init cpmac_init(void) diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c index 2eb9d5a32588..5d756df133eb 100644 --- a/drivers/net/ethernet/ti/davinci_emac.c +++ b/drivers/net/ethernet/ti/davinci_emac.c @@ -2002,7 +2002,7 @@ static int davinci_emac_probe(struct platform_device *pdev) * Called when removing the device driver. We disable clock usage and release * the resources taken up by the driver and unregister network device */ -static int davinci_emac_remove(struct platform_device *pdev) +static void davinci_emac_remove(struct platform_device *pdev) { struct net_device *ndev = platform_get_drvdata(pdev); struct emac_priv *priv = netdev_priv(ndev); @@ -2022,8 +2022,6 @@ static int davinci_emac_remove(struct platform_device *pdev) if (of_phy_is_fixed_link(np)) of_phy_deregister_fixed_link(np); free_netdev(ndev); - - return 0; } static int davinci_emac_suspend(struct device *dev) @@ -2076,7 +2074,7 @@ static struct platform_driver davinci_emac_driver = { .of_match_table = davinci_emac_of_match, }, .probe = davinci_emac_probe, - .remove = davinci_emac_remove, + .remove_new = davinci_emac_remove, }; /** diff --git a/drivers/net/ethernet/ti/davinci_mdio.c b/drivers/net/ethernet/ti/davinci_mdio.c index 89b6d23e9937..628c87dc1d28 100644 --- a/drivers/net/ethernet/ti/davinci_mdio.c +++ b/drivers/net/ethernet/ti/davinci_mdio.c @@ -673,7 +673,7 @@ static int davinci_mdio_probe(struct platform_device *pdev) return ret; } -static int davinci_mdio_remove(struct platform_device *pdev) +static void davinci_mdio_remove(struct platform_device *pdev) { struct davinci_mdio_data *data = platform_get_drvdata(pdev); @@ -686,8 +686,6 @@ static int davinci_mdio_remove(struct platform_device *pdev) pm_runtime_dont_use_autosuspend(&pdev->dev); pm_runtime_disable(&pdev->dev); - - return 0; } #ifdef CONFIG_PM @@ -766,7 +764,7 @@ static struct platform_driver davinci_mdio_driver = { .of_match_table = of_match_ptr(davinci_mdio_of_mtable), }, .probe = davinci_mdio_probe, - .remove = davinci_mdio_remove, + .remove_new = davinci_mdio_remove, }; static int __init davinci_mdio_init(void) diff --git a/drivers/net/ethernet/ti/netcp_core.c b/drivers/net/ethernet/ti/netcp_core.c index d829113c16ee..11b90e1da0c6 100644 --- a/drivers/net/ethernet/ti/netcp_core.c +++ b/drivers/net/ethernet/ti/netcp_core.c @@ -2228,7 +2228,7 @@ static int netcp_probe(struct platform_device *pdev) return ret; } -static int netcp_remove(struct platform_device *pdev) +static void netcp_remove(struct platform_device *pdev) { struct netcp_device *netcp_device = platform_get_drvdata(pdev); struct netcp_intf *netcp_intf, *netcp_tmp; @@ -2256,7 +2256,6 @@ static int netcp_remove(struct platform_device *pdev) pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); platform_set_drvdata(pdev, NULL); - return 0; } static const struct of_device_id of_match[] = { @@ -2271,7 +2270,7 @@ static struct platform_driver netcp_driver = { .of_match_table = of_match, }, .probe = netcp_probe, - .remove = netcp_remove, + .remove_new = netcp_remove, }; module_platform_driver(netcp_driver);