From mboxrd@z Thu Jan 1 00:00:00 1970 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 A91B6C7EE24 for ; Mon, 15 May 2023 20:58:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245377AbjEOU6q (ORCPT ); Mon, 15 May 2023 16:58:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32884 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245438AbjEOU6l (ORCPT ); Mon, 15 May 2023 16:58:41 -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 89B5BA5E9 for ; Mon, 15 May 2023 13:58:24 -0700 (PDT) Received: from moin.white.stw.pengutronix.de ([2a0a:edc0:0:b01:1d::7b] helo=bjornoya.blackshift.org) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pyfGk-0006lW-B2 for linux-can@vger.kernel.org; Mon, 15 May 2023 22:58:10 +0200 Received: from dspam.blackshift.org (localhost [127.0.0.1]) by bjornoya.blackshift.org (Postfix) with SMTP id D71461C5D29 for ; Mon, 15 May 2023 20:58:05 +0000 (UTC) Received: from hardanger.blackshift.org (unknown [172.20.34.65]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by bjornoya.blackshift.org (Postfix) with ESMTPS id 89E4D1C5CD1; Mon, 15 May 2023 20:58:03 +0000 (UTC) Received: from blackshift.org (localhost [::1]) by hardanger.blackshift.org (OpenSMTPD) with ESMTP id bf828c60; Mon, 15 May 2023 20:58:02 +0000 (UTC) From: Marc Kleine-Budde To: netdev@vger.kernel.org Cc: davem@davemloft.net, kuba@kernel.org, linux-can@vger.kernel.org, kernel@pengutronix.de, =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Marc Kleine-Budde Subject: [PATCH net-next 10/22] can: flexcan: Convert to platform remove callback returning void Date: Mon, 15 May 2023 22:57:47 +0200 Message-Id: <20230515205759.1003118-11-mkl@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230515205759.1003118-1-mkl@pengutronix.de> References: <20230515205759.1003118-1-mkl@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 2a0a:edc0:0:b01:1d::7b X-SA-Exim-Mail-From: mkl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-can@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-can@vger.kernel.org From: Uwe Kleine-König 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 Link: https://lore.kernel.org/r/20230512212725.143824-8-u.kleine-koenig@pengutronix.de Signed-off-by: Marc Kleine-Budde --- drivers/net/can/flexcan/flexcan-core.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/net/can/flexcan/flexcan-core.c b/drivers/net/can/flexcan/flexcan-core.c index 6d638c93977b..ff0fc18baf13 100644 --- a/drivers/net/can/flexcan/flexcan-core.c +++ b/drivers/net/can/flexcan/flexcan-core.c @@ -2218,7 +2218,7 @@ static int flexcan_probe(struct platform_device *pdev) return err; } -static int flexcan_remove(struct platform_device *pdev) +static void flexcan_remove(struct platform_device *pdev) { struct net_device *dev = platform_get_drvdata(pdev); @@ -2227,8 +2227,6 @@ static int flexcan_remove(struct platform_device *pdev) unregister_flexcandev(dev); pm_runtime_disable(&pdev->dev); free_candev(dev); - - return 0; } static int __maybe_unused flexcan_suspend(struct device *device) @@ -2379,7 +2377,7 @@ static struct platform_driver flexcan_driver = { .of_match_table = flexcan_of_match, }, .probe = flexcan_probe, - .remove = flexcan_remove, + .remove_new = flexcan_remove, .id_table = flexcan_id_table, }; -- 2.39.2