From patchwork Tue Sep 19 13:31:22 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: 13391382 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 BF406CD5BC1 for ; Tue, 19 Sep 2023 13:32:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232397AbjISNcZ (ORCPT ); Tue, 19 Sep 2023 09:32:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49048 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232364AbjISNcV (ORCPT ); Tue, 19 Sep 2023 09:32:21 -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 C4C9BEC for ; Tue, 19 Sep 2023 06:32:15 -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 1qiapq-0004ev-5l; Tue, 19 Sep 2023 15:32:14 +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 1qiapp-007T3Y-Ob; Tue, 19 Sep 2023 15:32:13 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qiapp-0030eO-FP; Tue, 19 Sep 2023 15:32:13 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Vinod Koul Cc: dmaengine@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 14/59] dma: fsl_raid: Convert to platform remove callback returning void Date: Tue, 19 Sep 2023 15:31:22 +0200 Message-Id: <20230919133207.1400430-15-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=1788; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=v3VRHkdVrKlET1Zuc/3I4iwdDbftxLnfNR5rPQCW040=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlCaG+3ZxPj+vPvQmZnHE5bvOh0DYl4QknuIFvh LTGepyWNFGJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZQmhvgAKCRCPgPtYfRL+ TppCB/9od4skhY7Oi1naJNJyo/XBk1gTT5C3tTzA0zNgxPa4C68qquHlWYnWsRHQ1bO9iNhm8NQ Yh5cx7uIFlEARtnA7aN45aubpxNsZdOLwKf5Cbfvn4sqm25sQBIRcOJ0y5ce7pXqvqciev8McbE FYpyj4peJc/jE/pr67iw83u/n+QIllYQwP48NJ8THHyLJ0fZ0RYhlz7iW+lDFo+pKt004IlhAxM mYoJ0/qiVuXRO5eiTIFtNCBnaTTZQKWRUuq87DFZTUb4CYwVPBEnOe+NcvseEhFEAyrqJUgxEDq IodvCRnTSDbOeqVupIqUARh2BTvN5jY96TP2pqBifbIoonin 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/fsl_raid.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/dma/fsl_raid.c b/drivers/dma/fsl_raid.c index 0b9ca93ce3dc..014ff523d5ec 100644 --- a/drivers/dma/fsl_raid.c +++ b/drivers/dma/fsl_raid.c @@ -857,7 +857,7 @@ static void fsl_re_remove_chan(struct fsl_re_chan *chan) chan->oub_phys_addr); } -static int fsl_re_remove(struct platform_device *ofdev) +static void fsl_re_remove(struct platform_device *ofdev) { struct fsl_re_drv_private *re_priv; struct device *dev; @@ -872,8 +872,6 @@ static int fsl_re_remove(struct platform_device *ofdev) /* Unregister the driver */ dma_async_device_unregister(&re_priv->dma_dev); - - return 0; } static const struct of_device_id fsl_re_ids[] = { @@ -888,7 +886,7 @@ static struct platform_driver fsl_re_driver = { .of_match_table = fsl_re_ids, }, .probe = fsl_re_probe, - .remove = fsl_re_remove, + .remove_new = fsl_re_remove, }; module_platform_driver(fsl_re_driver);