From patchwork Tue Sep 19 13:31:10 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: 13391424 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 EBB2BCD5BC6 for ; Tue, 19 Sep 2023 13:32:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232403AbjISNcs (ORCPT ); Tue, 19 Sep 2023 09:32:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55038 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232428AbjISNci (ORCPT ); Tue, 19 Sep 2023 09:32:38 -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 73B50F3 for ; Tue, 19 Sep 2023 06:32:31 -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 1qiapp-0004ai-Gn; Tue, 19 Sep 2023 15:32:13 +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 1qiapm-007T2n-Tl; Tue, 19 Sep 2023 15:32:10 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qiapm-0030db-Ip; Tue, 19 Sep 2023 15:32:10 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Vinod Koul Cc: Hector Martin , Sven Peter , Alyssa Rosenzweig , asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, dmaengine@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 02/59] dma: apple-admac: Convert to platform remove callback returning void Date: Tue, 19 Sep 2023 15:31:10 +0200 Message-Id: <20230919133207.1400430-3-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=1804; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=4cB0nw0yRieunGEduwbEFfSDJhK0MVnXD1ukbBmrjFc=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlCaGvXdbPaKXCELiF60wFgzJrODKGuGkxDr4uF v6NfyFey3mJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZQmhrwAKCRCPgPtYfRL+ TnJuB/9Ytvtvi3cRL9ZOU1ix4RRTQzUaiCnjhzfwyy7LYPKgzsSCJB7vHlQE4G3OuYrEdLZwyou RdoHe3e9rgLob2PuPw/05x7MFT6bpoDr1TPuLdbTyb579GC8f7kg0RKH5IQ+PYn1TqwBrXdcM16 KGDcFLzmtLa3e+wUIw/iyshugOp6fAFgcpRcfgcCYB8XDtYfOULOfzwoUzLYH9EJwIDRjuKJawi ++jGRFsdHqlUODBGBujtzXAuPmrMdHxEoNkWzxhbF3hz827ILv77sd9b3gXEwtDX3x0A0bBWxUq W2F6julJDk+8F4NecdHe9VuPkm2wj+SwwGqNmn7iFZV3GF2K 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/apple-admac.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/dma/apple-admac.c b/drivers/dma/apple-admac.c index 3af795635c5c..46bb02858561 100644 --- a/drivers/dma/apple-admac.c +++ b/drivers/dma/apple-admac.c @@ -925,7 +925,7 @@ static int admac_probe(struct platform_device *pdev) return err; } -static int admac_remove(struct platform_device *pdev) +static void admac_remove(struct platform_device *pdev) { struct admac_data *ad = platform_get_drvdata(pdev); @@ -933,8 +933,6 @@ static int admac_remove(struct platform_device *pdev) dma_async_device_unregister(&ad->dma); free_irq(ad->irq, ad); reset_control_rearm(ad->rstc); - - return 0; } static const struct of_device_id admac_of_match[] = { @@ -949,7 +947,7 @@ static struct platform_driver apple_admac_driver = { .of_match_table = admac_of_match, }, .probe = admac_probe, - .remove = admac_remove, + .remove_new = admac_remove, }; module_platform_driver(apple_admac_driver);