From patchwork Fri Dec 15 13:59:05 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: 13494497 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 904A5C35274 for ; Fri, 15 Dec 2023 14:00:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=frZCLE7Q5aIDs4DshUsoh/Vu5k4iMjcZ0tOMypmaluo=; b=AuCU8HW4Pk61Ti EMQEw1vlDVagoExTmryRKaFrvENxPkcjf6XxWapkiEABiXqgzf82Vp8mAlyj+JVeA+XZZ327R8zfs Bg5cOmcvGWaWxqV8RN3wi6dQlfOYHU2FQjbk37tm/FxZIdXRHlbdssrBiJfpTOaeitKIX4sq6E5zQ bndSwUSUl2yFk+u190QrqTa5K2AnFf0R3ZxWejq7xoCxqPor9SLsvIOZS8b/mRxD0x0l3+gv7ignY 6F2RQ9RttXn3rzhMGcEoafBSvu+K+ugVwlCBYmq2MfygAzEOYZK3g7euY/kOnBkyIpu4oxWV0Ozz5 Nt7+xuq+0hsSw3zdGfHA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rE8jC-003Ssu-1e; Fri, 15 Dec 2023 13:59:46 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rE8ix-003Sjd-1T for linux-arm-kernel@lists.infradead.org; Fri, 15 Dec 2023 13:59:33 +0000 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 1rE8iv-0002lj-IB; Fri, 15 Dec 2023 14:59:29 +0100 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 1rE8iv-00G2ZU-5G; Fri, 15 Dec 2023 14:59:29 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1rE8iu-003cCI-SF; Fri, 15 Dec 2023 14:59:28 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Will Deacon , Mark Rutland Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 05/18] perf: arm-cmn: Convert to platform remove callback returning void Date: Fri, 15 Dec 2023 14:59:05 +0100 Message-ID: <8698ca612e17292f8a8bbb2d1c0f6be4b2053da7.1702648125.git.u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.42.0 In-Reply-To: References: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1819; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=rdvhYagiU3f/ZvfHEseZfXcXHLBGbSqUlVpPbtXCZfM=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlfFuqSs0T4Sqze1XzrLbcw0LPpYHBxuClmaojU 0kwcLgxM8KJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZXxbqgAKCRCPgPtYfRL+ TmbECACHZbdkhVZnAkBCNBCLANRJrzUadl+dzu25xhZvyB9/uIWNlXBvRnMj5MQG6TjIjSfxmlJ NnqOOaQQjmkzP/LxNGZpA1EBnV5kXk1YowHg8Yp7Kc2D7IyLvIC1CFkGbevgAf/WDbGDh0i0Gg5 j1CIFSo18JIT4KPN11gtwdXaFGrCM9mEIfbqwpGjo3lehyBSooAgYY6xdBSg8JYn8Y5lCaENi/d Gqc90zCWQ6kPHCn0BXILApkXFRXxt+Hl07qJa2So8NP23XUPP0K5oSewtpSGZkwol+pA8CRScXl sKgo4wvu1y2zEKt+al71hbBzKAqMaMT4Sq3J4JqN+D8yNBLS 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-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231215_055931_490647_B5E9BB09 X-CRM114-Status: GOOD ( 16.02 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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() will be 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/perf/arm-cmn.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c index c584165b13ba..ac7a953fe902 100644 --- a/drivers/perf/arm-cmn.c +++ b/drivers/perf/arm-cmn.c @@ -2504,7 +2504,7 @@ static int arm_cmn_probe(struct platform_device *pdev) return err; } -static int arm_cmn_remove(struct platform_device *pdev) +static void arm_cmn_remove(struct platform_device *pdev) { struct arm_cmn *cmn = platform_get_drvdata(pdev); @@ -2513,7 +2513,6 @@ static int arm_cmn_remove(struct platform_device *pdev) perf_pmu_unregister(&cmn->pmu); cpuhp_state_remove_instance_nocalls(arm_cmn_hp_state, &cmn->cpuhp_node); debugfs_remove(cmn->debug); - return 0; } #ifdef CONFIG_OF @@ -2544,7 +2543,7 @@ static struct platform_driver arm_cmn_driver = { .acpi_match_table = ACPI_PTR(arm_cmn_acpi_match), }, .probe = arm_cmn_probe, - .remove = arm_cmn_remove, + .remove_new = arm_cmn_remove, }; static int __init arm_cmn_init(void)