From patchwork Tue Sep 19 13:32:04 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: 13391432 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 9B73ECD5BC6 for ; Tue, 19 Sep 2023 13:32:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232450AbjISNcv (ORCPT ); Tue, 19 Sep 2023 09:32:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54966 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232446AbjISNcl (ORCPT ); Tue, 19 Sep 2023 09:32:41 -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 0E956118 for ; Tue, 19 Sep 2023 06:32:35 -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 1qiaq1-0005R1-ET; Tue, 19 Sep 2023 15:32:25 +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 1qiapz-007T69-Mk; Tue, 19 Sep 2023 15:32:23 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qiapz-0030h5-Bg; Tue, 19 Sep 2023 15:32:23 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Vinod Koul Cc: Lizhi Hou , Brian Xu , Raj Kumar Rampelli , Michal Simek , dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de Subject: [PATCH 56/59] dma: xilinx: xdma: Convert to platform remove callback returning void Date: Tue, 19 Sep 2023 15:32:04 +0200 Message-Id: <20230919133207.1400430-57-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=sC1e8XJTChK1hqfmNfjLBa8n8F4EYU6xG4pax8b38go=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlCaHwutEfREUe+TsY3JOTt/GOI6T83oxZ7vSZH Pq4RcG7cyCJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZQmh8AAKCRCPgPtYfRL+ TvAhB/9X9uyZRMV7OGmuYpdyBbRooeXKE8CmA9szakE9VnNPpZQWkm4g8yBlydZxxXExzFZKA+p jbNHOKB70fkr3qu8rXIKWMOqf5TA2JnOMOoZVfeuc6mmqWOfDAF4gguzmq+StFCMqb/vQ7wTy99 +jTswJaOol+nlRNum9RVXqVbg9e27FZzgJJgzwdLmCdpL9ASIHdHIokTuYpW0VTcy/zpvenbiQW tNdOlisK5Sa1XAyXs4utVX9zxBAqgHfWrmstNkS9mdDZdR7Jno1M/r1PXmWTvssrp3qcM4akhZV YxVARj6SD7EO+rPqgka4dECLa5ae/4+US8aaeToOEuTAWFgT 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/xilinx/xdma.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/dma/xilinx/xdma.c b/drivers/dma/xilinx/xdma.c index e0bfd129d563..459e7b9838ed 100644 --- a/drivers/dma/xilinx/xdma.c +++ b/drivers/dma/xilinx/xdma.c @@ -841,7 +841,7 @@ EXPORT_SYMBOL(xdma_get_user_irq); * xdma_remove - Driver remove function * @pdev: Pointer to the platform_device structure */ -static int xdma_remove(struct platform_device *pdev) +static void xdma_remove(struct platform_device *pdev) { struct xdma_device *xdev = platform_get_drvdata(pdev); @@ -850,8 +850,6 @@ static int xdma_remove(struct platform_device *pdev) if (xdev->status & XDMA_DEV_STATUS_REG_DMA) dma_async_device_unregister(&xdev->dma_dev); - - return 0; } /** @@ -966,7 +964,7 @@ static struct platform_driver xdma_driver = { }, .id_table = xdma_id_table, .probe = xdma_probe, - .remove = xdma_remove, + .remove_new = xdma_remove, }; module_platform_driver(xdma_driver);