From patchwork Thu Nov 2 16:56:46 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: 13444023 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 3A03BC0018A for ; Thu, 2 Nov 2023 16:57:46 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B285710E94A; Thu, 2 Nov 2023 16:57:34 +0000 (UTC) Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [IPv6:2a0a:edc0:2:b01:1d::104]) by gabe.freedesktop.org (Postfix) with ESMTPS id D8BB810E948 for ; Thu, 2 Nov 2023 16:57:31 +0000 (UTC) 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 1qyb0I-00035C-Ud; Thu, 02 Nov 2023 17:57:11 +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 1qyb0G-0067F3-BJ; Thu, 02 Nov 2023 17:57:08 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qyb0G-00Bjc5-1e; Thu, 02 Nov 2023 17:57:08 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Andrzej Hajda , Neil Armstrong , Robert Foss , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Aradhya Bhatia , Javier Martinez Canillas , Nikhil Devshatwar , Tomi Valkeinen , Rob Herring , Zhu Wang Subject: [PATCH v3 05/16] drm/bridge: cdns-mhdp8546: Convert to platform remove callback returning void Date: Thu, 2 Nov 2023 17:56:46 +0100 Message-ID: <20231102165640.3307820-23-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231102165640.3307820-18-u.kleine-koenig@pengutronix.de> References: <20231102165640.3307820-18-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1899; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=g+ryyUe/ZEgxFTQcpVWhdIEhzawDf02Pcc6xLhiSJHg=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlQ9TOD4ef0Nx/cW1hylqwCv/X+kbjR/3Vcgphl 9tQtf3sdQCJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZUPUzgAKCRCPgPtYfRL+ TpCBCACbljF4Wz6nrjcOF+WWk25pLbIJh96mzjiYzOefLKmQOxp9Kn9JrAeQFfH/4KH9vCef0Le iRivhUIfhw9yrg3byAK2K6HtJFPcMbxhpu+2QtHwSnGVPZNLJAkI+oY8iehFAGBbeKEZTFtKk8Q 0ITJW8LceBLoZRhqTMHdG7KsqGvZ0lACLrxQ4F093OFAlLyAWGTp0AhWywymeqnd/xc/Ezsz5fU KUzjvaXxifKfxNctdyImGaGyIOFz/zx90AHdGQya//hPLi6XranJ94wBcorYRRhCmsaGYn2+GyL HGqro7OMk6VoYsSUPKN4qvMh79vEio/wdBj/FkHCsLf8ipJR 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: dri-devel@lists.freedesktop.org X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kernel@pengutronix.de, dri-devel@lists.freedesktop.org, Laurent Pinchart , Jernej Skrabec , Jonas Karlman Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 (mostly) ignored 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. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König --- drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c index 66c87d36ce51..7d470527455b 100644 --- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c +++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c @@ -2596,7 +2596,7 @@ static int cdns_mhdp_probe(struct platform_device *pdev) return ret; } -static int cdns_mhdp_remove(struct platform_device *pdev) +static void cdns_mhdp_remove(struct platform_device *pdev) { struct cdns_mhdp_device *mhdp = platform_get_drvdata(pdev); unsigned long timeout = msecs_to_jiffies(100); @@ -2634,8 +2634,6 @@ static int cdns_mhdp_remove(struct platform_device *pdev) /* Ignoring mhdp->hdcp.check_work and mhdp->hdcp.prop_work here. */ clk_disable_unprepare(mhdp->clk); - - return 0; } static const struct of_device_id mhdp_ids[] = { @@ -2658,7 +2656,7 @@ static struct platform_driver mhdp_driver = { .of_match_table = mhdp_ids, }, .probe = cdns_mhdp_probe, - .remove = cdns_mhdp_remove, + .remove_new = cdns_mhdp_remove, }; module_platform_driver(mhdp_driver);