From patchwork Thu Nov 2 16:56:51 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: 13444020 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 BEFF0C4167D for ; Thu, 2 Nov 2023 16:57:42 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A6C2810E946; Thu, 2 Nov 2023 16:57:33 +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 32D2610E945 for ; Thu, 2 Nov 2023 16:57:28 +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-00035m-7y; Thu, 02 Nov 2023 17:57:10 +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 1qyb0H-0067FL-Da; Thu, 02 Nov 2023 17:57:09 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qyb0H-00BjcP-3f; Thu, 02 Nov 2023 17:57:09 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Shawn Guo , Sascha Hauer , Philipp Zabel , Steven Price , Liviu Dudau , Thierry Reding , Marian Cichy , Rob Herring , Dan Carpenter Subject: [PATCH v3 10/16] drm/imx: lcdc: Convert to platform remove callback returning void Date: Thu, 2 Nov 2023 17:56:51 +0100 Message-ID: <20231102165640.3307820-28-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=1803; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=lOvzbw92fAzSV2lgBBJM743KZFY98FZ3XUbiqkFSjak=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlQ9TUNH/iOBmK8XmFSMbzr74VAyCBxzow8xCve F453+OOt/CJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZUPU1AAKCRCPgPtYfRL+ TpEBB/9honWD/V2l8tgd2BzG+Mx88Z4hB6wWh8yVfMHA/Rb6E4IglUBT9RZxluD4K4rCeyc143f utgdz5zdorzgw6NECq+aeUWyXmSlUphQylG8sRZ7O5MV35Y32q7Keo1eRT6FzfnQRSPKYPB9omU l5DJbu+ylvUw88maXo2Jl59iwWThlgkRPcPskbGNEBAX54sfUJlrRxU6wGUlWCye+7U3DNvsuVo js9hEB2YOnLLxNVJLRJcoEsjsNkaqU730wD9WIMv9MHCIQqgjLMqlyLujPNb5bSCGINwbDCy0Kb 43KpNlp2Vh0kTDGc6d7KVw1ZSBUlhZ/j/T/VYekalNgEo1Vv 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: linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de, NXP Linux Team , dri-devel@lists.freedesktop.org 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 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/gpu/drm/imx/lcdc/imx-lcdc.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/imx/lcdc/imx-lcdc.c b/drivers/gpu/drm/imx/lcdc/imx-lcdc.c index 22b65f4a0e30..0902983374d0 100644 --- a/drivers/gpu/drm/imx/lcdc/imx-lcdc.c +++ b/drivers/gpu/drm/imx/lcdc/imx-lcdc.c @@ -515,14 +515,12 @@ static int imx_lcdc_probe(struct platform_device *pdev) return 0; } -static int imx_lcdc_remove(struct platform_device *pdev) +static void imx_lcdc_remove(struct platform_device *pdev) { struct drm_device *drm = platform_get_drvdata(pdev); drm_dev_unregister(drm); drm_atomic_helper_shutdown(drm); - - return 0; } static void imx_lcdc_shutdown(struct platform_device *pdev) @@ -536,7 +534,7 @@ static struct platform_driver imx_lcdc_driver = { .of_match_table = imx_lcdc_of_dev_id, }, .probe = imx_lcdc_probe, - .remove = imx_lcdc_remove, + .remove_new = imx_lcdc_remove, .shutdown = imx_lcdc_shutdown, }; module_platform_driver(imx_lcdc_driver);