From patchwork Sun Mar 26 14:31:33 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: 13188195 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 595A0C6FD1C for ; Sun, 26 Mar 2023 14:33:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232271AbjCZOdM (ORCPT ); Sun, 26 Mar 2023 10:33:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60346 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232556AbjCZOdJ (ORCPT ); Sun, 26 Mar 2023 10:33:09 -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 794C76598 for ; Sun, 26 Mar 2023 07:32:57 -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 1pgRQJ-0008TT-Dp; Sun, 26 Mar 2023 16:32:43 +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 1pgRQG-006rdn-HA; Sun, 26 Mar 2023 16:32:40 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pgRQF-0088Y0-Or; Sun, 26 Mar 2023 16:32:39 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Sylwester Nawrocki , Mauro Carvalho Chehab , Krzysztof Kozlowski Cc: Alim Akhtar , linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 066/117] media: media-dev: Convert to platform remove callback returning void Date: Sun, 26 Mar 2023 16:31:33 +0200 Message-Id: <20230326143224.572654-69-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=2075; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=fR+7i0Q7VbhWWGpxbF+Or52vl4QTHp55EWAHRayMtsU=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBkIFbV3gGUC0NrekqDM5AUKULJFCGOs7suvsmPj cDwQMcppZyJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZCBW1QAKCRCPgPtYfRL+ TtYNB/9moN33etmJ1WhTaL/TZZlnRdoZBEgv3KSIC2tje1scrWqkirUOHf43V5AWsQqMAYf2Qan oqhtsIQeb5IiiKS1gGvPyv6bAwqIrGzKQkOvXZljiWmy1m/L+9aSanjU1wBoFmLE+UaMuLly2wh PZiXt1cLED/yKhbp0YBNN9VtnMOrf5j1APjV6uGIXpnIlieXaHBHW7aBMW3yGnOo02xZy5TdCps hT4TuNZDrQmMZvmzx9STXyzDljeZLB8kmd2rEpfzRRCEGVa4MQgKnlhzX1SQ5e+eXPYNpQaUq4H QTOzMkGAqMi6u8A6dz4P1XM/Lw8DSapqhjVkJOWae907+R2R 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-samsung-soc@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@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/samsung/exynos4-is/media-dev.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/media/platform/samsung/exynos4-is/media-dev.c b/drivers/media/platform/samsung/exynos4-is/media-dev.c index 98a60f01129d..5ca78fee7804 100644 --- a/drivers/media/platform/samsung/exynos4-is/media-dev.c +++ b/drivers/media/platform/samsung/exynos4-is/media-dev.c @@ -1530,12 +1530,12 @@ static int fimc_md_probe(struct platform_device *pdev) return ret; } -static int fimc_md_remove(struct platform_device *pdev) +static void fimc_md_remove(struct platform_device *pdev) { struct fimc_md *fmd = platform_get_drvdata(pdev); if (!fmd) - return 0; + return; fimc_md_unregister_clk_provider(fmd); v4l2_async_nf_unregister(&fmd->subdev_notifier); @@ -1548,8 +1548,6 @@ static int fimc_md_remove(struct platform_device *pdev) media_device_unregister(&fmd->media_dev); media_device_cleanup(&fmd->media_dev); fimc_md_put_clocks(fmd); - - return 0; } static const struct platform_device_id fimc_driver_ids[] __always_unused = { @@ -1566,7 +1564,7 @@ MODULE_DEVICE_TABLE(of, fimc_md_of_match); static struct platform_driver fimc_md_driver = { .probe = fimc_md_probe, - .remove = fimc_md_remove, + .remove_new = fimc_md_remove, .driver = { .of_match_table = of_match_ptr(fimc_md_of_match), .name = "s5p-fimc-md",