From patchwork Tue Sep 19 13:31:55 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: 13391427 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 5A0C8CD5BC7 for ; Tue, 19 Sep 2023 13:32:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232426AbjISNct (ORCPT ); Tue, 19 Sep 2023 09:32:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55064 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232427AbjISNcj (ORCPT ); Tue, 19 Sep 2023 09:32:39 -0400 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [IPv6:2a0a:edc0:2:b01:1d::104]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 838FF132 for ; Tue, 19 Sep 2023 06:32:32 -0700 (PDT) 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 1qiapz-0005FI-HG; Tue, 19 Sep 2023 15:32:23 +0200 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 1qiapx-007T5Z-Ek; Tue, 19 Sep 2023 15:32:21 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qiapx-0030gW-5J; Tue, 19 Sep 2023 15:32:21 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Vinod Koul Cc: Laxman Dewangan , Jon Hunter , Thierry Reding , dmaengine@vger.kernel.org, linux-tegra@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 47/59] dma: tegra186-gpc-dma: Convert to platform remove callback returning void Date: Tue, 19 Sep 2023 15:31:55 +0200 Message-Id: <20230919133207.1400430-48-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230919133207.1400430-1-u.kleine-koenig@pengutronix.de> References: <20230919133207.1400430-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1790; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=iHs4HlU8wdvJhxErQlTdc9ftb0/Pep+KtGw3IGGHh/0=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlCaHlSic1zq2Y2fiV9uSKVBoR8akw1xLuq3gVB Ps1amKPa+2JATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZQmh5QAKCRCPgPtYfRL+ Tgu1CACIza9DIwjqTGbElojU4hUCj/puU1Aq47DSEOsjutLY1QTYl4pet1JOMkqnG38LiYLgY2Z MQvcHCMV5vU/5LNteyjsRT6khNkeqmcFJmH06NLvHEcEQZxqYGxy8R4jiMCmI7aowJU3FpHzV6N Jr00jeYGItOweyNjOATxpeh29Qsr+ihp7l1QMb7MrNCtla+2I35HMULplIN9q0gC6Nh3cOFwcla mAPwRcrq4D1FQmNVQQs7ckFY194V1Sw/cqZpikJ5Cx8I3KcEcHRL6bG2gA6qyJcf3OrwOwhi+sn o5ZuUUTslqwJw0/arFgpSI9Y7qsg0Tu3fSuU8cWYxEEZNbiH 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: dmaengine@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@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 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() is 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/dma/tegra186-gpc-dma.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/dma/tegra186-gpc-dma.c b/drivers/dma/tegra186-gpc-dma.c index 33b101001100..868c18cc72b1 100644 --- a/drivers/dma/tegra186-gpc-dma.c +++ b/drivers/dma/tegra186-gpc-dma.c @@ -1473,14 +1473,12 @@ static int tegra_dma_probe(struct platform_device *pdev) return 0; } -static int tegra_dma_remove(struct platform_device *pdev) +static void tegra_dma_remove(struct platform_device *pdev) { struct tegra_dma *tdma = platform_get_drvdata(pdev); of_dma_controller_free(pdev->dev.of_node); dma_async_device_unregister(&tdma->dma_dev); - - return 0; } static int __maybe_unused tegra_dma_pm_suspend(struct device *dev) @@ -1533,7 +1531,7 @@ static struct platform_driver tegra_dma_driver = { .of_match_table = tegra_dma_of_match, }, .probe = tegra_dma_probe, - .remove = tegra_dma_remove, + .remove_new = tegra_dma_remove, }; module_platform_driver(tegra_dma_driver);