From patchwork Tue Sep 19 13:31:45 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: 13391407 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 272DACD5BC0 for ; Tue, 19 Sep 2023 13:32:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232401AbjISNci (ORCPT ); Tue, 19 Sep 2023 09:32:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232400AbjISNca (ORCPT ); Tue, 19 Sep 2023 09:32:30 -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 5D535FB for ; Tue, 19 Sep 2023 06:32:24 -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 1qiapw-00054x-K8; Tue, 19 Sep 2023 15:32:20 +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 1qiapv-007T50-02; Tue, 19 Sep 2023 15:32:19 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qiapu-0030fr-NA; Tue, 19 Sep 2023 15:32:18 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Vinod Koul Cc: dmaengine@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 37/59] dma: sa11x0-dma: Convert to platform remove callback returning void Date: Tue, 19 Sep 2023 15:31:45 +0200 Message-Id: <20230919133207.1400430-38-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=1812; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=GAyk3hyimkSYenbksbwYOpwaMajyz0JdjA4JLJvF+qw=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlCaHZ7hGGTk7W0scPlbjFiOPGVWs+ttk57cZUV URzrHZ9VFCJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZQmh2QAKCRCPgPtYfRL+ TiRpB/9Xe4pnwJciwn285zEEPeyfmb57woqf6DCcTXEnKVLhjheiLw9UOzGEVCy0R/qh9MatEoP 9xgLkD3B04fpS4DgkEd+/nZkx9rdKXUPmCsGXRvEpFqCN+72Nh7UX90spoUdVfYv2h/lVR/YxPI okciSxegTeNeAftC1y/Z+y0Xw2jscg0YS+uDSlpswb4DgEEi/fynuTfKAYXOT1RwgcOp7KEelnD UwoQhIhhWbFHrWHMjPAlPz8km2876fGhX3QmxshR7Il5mM5OMWXIrHBaf+cTjOXYOUpxXIkTdoc 0JgMIHU4uFMHGM197Z+0pSQJ2sWQrsGJ55WuTfZQKltewbvJ 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/sa11x0-dma.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/dma/sa11x0-dma.c b/drivers/dma/sa11x0-dma.c index a29c13cae716..488408e6826a 100644 --- a/drivers/dma/sa11x0-dma.c +++ b/drivers/dma/sa11x0-dma.c @@ -984,7 +984,7 @@ static int sa11x0_dma_probe(struct platform_device *pdev) return ret; } -static int sa11x0_dma_remove(struct platform_device *pdev) +static void sa11x0_dma_remove(struct platform_device *pdev) { struct sa11x0_dma_dev *d = platform_get_drvdata(pdev); unsigned pch; @@ -997,8 +997,6 @@ static int sa11x0_dma_remove(struct platform_device *pdev) tasklet_kill(&d->task); iounmap(d->base); kfree(d); - - return 0; } static __maybe_unused int sa11x0_dma_suspend(struct device *dev) @@ -1081,7 +1079,7 @@ static struct platform_driver sa11x0_dma_driver = { .pm = &sa11x0_dma_pm_ops, }, .probe = sa11x0_dma_probe, - .remove = sa11x0_dma_remove, + .remove_new = sa11x0_dma_remove, }; static int __init sa11x0_dma_init(void)