From patchwork Wed Mar 8 07:39:40 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: 13165325 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 37847C64EC4 for ; Wed, 8 Mar 2023 07:40:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229579AbjCHHko (ORCPT ); Wed, 8 Mar 2023 02:40:44 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41942 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229544AbjCHHki (ORCPT ); Wed, 8 Mar 2023 02:40:38 -0500 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 02F08A7295 for ; Tue, 7 Mar 2023 23:39:58 -0800 (PST) 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 1pZoOu-0007Qy-PT; Wed, 08 Mar 2023 08:39:52 +0100 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 1pZoOu-002fIa-1L; Wed, 08 Mar 2023 08:39:52 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pZoOt-003EMJ-5y; Wed, 08 Mar 2023 08:39:51 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Lee Jones , Daniel Thompson , Jingoo Han , Helge Deller Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 08/13] backlight: lp8788_bl: Convert to platform remove callback returning void Date: Wed, 8 Mar 2023 08:39:40 +0100 Message-Id: <20230308073945.2336302-9-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230308073945.2336302-1-u.kleine-koenig@pengutronix.de> References: <20230308073945.2336302-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1781; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=eZI2qgwe+z8FxS6pbJzftF3JfolPn27Am+dAm+EqCn4=; b=owEBbQGS/pANAwAKAcH8FHityuwJAcsmYgBkCDurfYrDtgJfwBic1T4d+VfIM8TB6g012i0x+ Je7+gATV6yJATMEAAEKAB0WIQR+cioWkBis/z50pAvB/BR4rcrsCQUCZAg7qwAKCRDB/BR4rcrs CZZ0B/0QhsnRPRM0EqgHnN2TxIbhgVISwtWaMPMoi2eqmn+RMBDOiGiTRcIN7cLgdllOuf/oizt pG50D8bVhyHyfyjJVKSnT+JNeEWCWfiC9U0hEuw+L8Okat1sr6vEXaFWtoK4sV9hI5lIX7nwYco /NqQUHbz35SJG2zM97u1SLneo/Ix5Vg3LfD94EwNLD8IU/2Y61M6JLwKBldlMMlCPnlLiibxzix 0kvQvebJZmNRHiFT0OuH9pCVQ2plhZsfdSLpPfXsLwFlBUsNZ3FpHY4Pm8oro/VL/E9nHdwBEJX vdOT8yFWO6eXaRF1/OoYntrPb5jEgJlo+rJsUGwzYEB3SRKk 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-fbdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@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/video/backlight/lp8788_bl.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/video/backlight/lp8788_bl.c b/drivers/video/backlight/lp8788_bl.c index ba42f3fe0c73..d1a14b0db265 100644 --- a/drivers/video/backlight/lp8788_bl.c +++ b/drivers/video/backlight/lp8788_bl.c @@ -298,7 +298,7 @@ static int lp8788_backlight_probe(struct platform_device *pdev) return ret; } -static int lp8788_backlight_remove(struct platform_device *pdev) +static void lp8788_backlight_remove(struct platform_device *pdev) { struct lp8788_bl *bl = platform_get_drvdata(pdev); struct backlight_device *bl_dev = bl->bl_dev; @@ -307,13 +307,11 @@ static int lp8788_backlight_remove(struct platform_device *pdev) backlight_update_status(bl_dev); sysfs_remove_group(&pdev->dev.kobj, &lp8788_attr_group); lp8788_backlight_unregister(bl); - - return 0; } static struct platform_driver lp8788_bl_driver = { .probe = lp8788_backlight_probe, - .remove = lp8788_backlight_remove, + .remove_new = lp8788_backlight_remove, .driver = { .name = LP8788_DEV_BACKLIGHT, },