From patchwork Sun Mar 26 14:30:54 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: 667781 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 5C9C3C77B6E for ; Sun, 26 Mar 2023 14:33:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232561AbjCZOdO (ORCPT ); Sun, 26 Mar 2023 10:33:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60336 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232356AbjCZOco (ORCPT ); Sun, 26 Mar 2023 10:32:44 -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 8AFFE6EAF for ; Sun, 26 Mar 2023 07:32:43 -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 1pgRQ9-0007u7-Ss; Sun, 26 Mar 2023 16:32:33 +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 1pgRQ8-006raq-0o; Sun, 26 Mar 2023 16:32:32 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pgRQ7-0088VX-Cx; Sun, 26 Mar 2023 16:32:31 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Minghsiu Tsai , Houlong Wei , Andrew-CT Chen , Mauro Carvalho Chehab , Matthias Brugger Cc: AngeloGioacchino Del Regno , linux-media@vger.kernel.org, kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH 027/117] media: mtk_mdp_core: Convert to platform remove callback returning void Date: Sun, 26 Mar 2023 16:30:54 +0200 Message-Id: <20230326143224.572654-30-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230326143224.572654-1-u.kleine-koenig@pengutronix.de> References: <20230326143224.572654-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1880; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=y8bSdpHxKUjCtkirbqVmfzAs2Ji59QmvfnVDIgdxzcQ=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkIFan6YuIoMjUGZnFCQzpGpWS/hnIDnLhYY6Pb Me2nK1dfZ+JATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZCBWpwAKCRCPgPtYfRL+ TnOQB/9uXk4tzwoMLL/P51kVbWyicAA9ErSPE7tziq+q6StcUfDCBSAksMFr/C/N4DYWFnXZrAN ZhskqwE0/YIi8VBK9HVCgFn3ceDMqEVaENs4z5Udpr8cOo0MbRSBnOiVXsb9fMQwdsM63SZJ7j8 gpyngUq86GkXUGoiW1TY0aR5C1och9yyzawc4Eck6F2TzJOFimpCvYXiMK2MIDT/Sl9iaivxHOn oOCWhYTOtE96gymBOk17/xnQjQsLljkPRU+cZILEbUP48q8UcidqLzGmdB+Nl5cKarKt3QKWP4D cs64Ib3/Th4jWpkJBflC9/+R/fNKMJvQle91G7GsWT94GPw5 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-media@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@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 (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/media/platform/mediatek/mdp/mtk_mdp_core.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c b/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c index d83c4964eaf9..77e310e588e5 100644 --- a/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c +++ b/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c @@ -235,7 +235,7 @@ static int mtk_mdp_probe(struct platform_device *pdev) return ret; } -static int mtk_mdp_remove(struct platform_device *pdev) +static void mtk_mdp_remove(struct platform_device *pdev) { struct mtk_mdp_dev *mdp = platform_get_drvdata(pdev); struct mtk_mdp_comp *comp, *comp_temp; @@ -255,7 +255,6 @@ static int mtk_mdp_remove(struct platform_device *pdev) } dev_dbg(&pdev->dev, "%s driver unloaded\n", pdev->name); - return 0; } static int __maybe_unused mtk_mdp_pm_suspend(struct device *dev) @@ -299,7 +298,7 @@ static const struct dev_pm_ops mtk_mdp_pm_ops = { static struct platform_driver mtk_mdp_driver = { .probe = mtk_mdp_probe, - .remove = mtk_mdp_remove, + .remove_new = mtk_mdp_remove, .driver = { .name = MTK_MDP_MODULE_NAME, .pm = &mtk_mdp_pm_ops,