From patchwork Sun Mar 26 14:31:08 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: 667776 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 9A1ADC761AF for ; Sun, 26 Mar 2023 14:33:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232002AbjCZOdZ (ORCPT ); Sun, 26 Mar 2023 10:33:25 -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 S232437AbjCZOcr (ORCPT ); Sun, 26 Mar 2023 10:32:47 -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 9EDA07D84 for ; Sun, 26 Mar 2023 07:32:45 -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 1pgRQD-00089h-P3; Sun, 26 Mar 2023 16:32:37 +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 1pgRQB-006rc1-LJ; Sun, 26 Mar 2023 16:32:35 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pgRQA-0088WP-CZ; Sun, 26 Mar 2023 16:32:34 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Mauro Carvalho Chehab , =?utf-8?q?Uwe_Kleine-K=C3=B6?= =?utf-8?q?nig?= Cc: linux-media@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 041/117] media: mx2_emmaprp: Convert to platform remove callback returning void Date: Sun, 26 Mar 2023 16:31:08 +0200 Message-Id: <20230326143224.572654-44-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=1680; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=TcgSvyXz30JD9Fu92pOx8XV/iV3Tk0/AitEz0iTvp8c=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkIFa4So/HuY3eI/Ohv8pGTB1onYDGIBgslCQt0 HlmIHp1yCuJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZCBWuAAKCRCPgPtYfRL+ TldfCAC6S2LWDJNYqtcZKMPejYK7vvUv+9Dgnmovcor7j+0ufpThZuCHjGGOwAB7RyEbbkZmRL0 NtNG+RhtBc6bnxpCudQUV1aRMfL+JUtfiHimx69Tl6ess080hQsPVwK6bQkpoa1b5VifAzxGCRs HaEPYCXirnMLAjAy0ToBDlatqo2GDjYoaBQnpNlnqLr1sQhQ5pTZrRgHWnV8vkv/0GKinnQPdlf +Jy84DlKDBFYAFfBke0X6+xyJAcwYPfY/vkb9L9mGPiaPfK9M3prH0ZNMR66ux8PzSgLsV6IR1b BWV0Dwv06ve64M7nYjOhb3XuOThzMnK0l4BQphY98zMjHfpV 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/nxp/mx2_emmaprp.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/nxp/mx2_emmaprp.c b/drivers/media/platform/nxp/mx2_emmaprp.c index 3ce84d0f078c..023ed40c6b08 100644 --- a/drivers/media/platform/nxp/mx2_emmaprp.c +++ b/drivers/media/platform/nxp/mx2_emmaprp.c @@ -888,7 +888,7 @@ static int emmaprp_probe(struct platform_device *pdev) return ret; } -static int emmaprp_remove(struct platform_device *pdev) +static void emmaprp_remove(struct platform_device *pdev) { struct emmaprp_dev *pcdev = platform_get_drvdata(pdev); @@ -898,13 +898,11 @@ static int emmaprp_remove(struct platform_device *pdev) v4l2_m2m_release(pcdev->m2m_dev); v4l2_device_unregister(&pcdev->v4l2_dev); mutex_destroy(&pcdev->dev_mutex); - - return 0; } static struct platform_driver emmaprp_pdrv = { .probe = emmaprp_probe, - .remove = emmaprp_remove, + .remove_new = emmaprp_remove, .driver = { .name = MEM2MEM_NAME, },