From patchwork Tue Sep 19 13:31:44 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: 13391425 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 88A60CD5BBD for ; Tue, 19 Sep 2023 13:32:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232428AbjISNcs (ORCPT ); Tue, 19 Sep 2023 09:32:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54908 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232286AbjISNci (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 140E1128 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 1qiapw-00053f-Ij; 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 1qiapu-007T4w-Qa; Tue, 19 Sep 2023 15:32:18 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qiapu-0030fo-HE; Tue, 19 Sep 2023 15:32:18 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Vinod Koul Cc: Andy Gross , Bjorn Andersson , Konrad Dybcio , linux-arm-msm@vger.kernel.org, dmaengine@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 36/59] dma: qcom: qcom_adm: Convert to platform remove callback returning void Date: Tue, 19 Sep 2023 15:31:44 +0200 Message-Id: <20230919133207.1400430-37-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=1861; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=MTHxMVOKj0c5e8s0Wrd0Yn3TaQHw/1jODqrJpVqwjPA=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlCaHYImy6GB6sJinxFG9tw1qyO9ufCht1F+ARl Dc7gOpD0rqJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZQmh2AAKCRCPgPtYfRL+ TrsaB/wIsrOJnCPHFsjVpLmU1/zLdUIKIG1cCmwf+CcZDJqkbghT0BwChEtyUDkcu4XMRS6wX7L zAlu3qeJJp7brZmHlPzSwgalSaY+XT9uv8+sozfHbpToTDPTN2EUWh4ZeLvRppDRsJyimItsrSq QsSnKgke661Ipaa6cU2euWzoC/u99jaXwt/GRkjUkMv42a/GKYpaKnBOULEWDreO9rFPpbDFVc3 c2KO5gafaTxIXy3Rnbn2hY9Y+dphbiXWKhhyL+YP7F+KuQRcqs/SkaFJ6jLA1SPfRf6ec/fPjS7 a3SIh+idPa+DOQiszsAaHsshgLWKqFzVUa51oY2MNVh4X4bl 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 Reviewed-by: Konrad Dybcio --- drivers/dma/qcom/qcom_adm.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/dma/qcom/qcom_adm.c b/drivers/dma/qcom/qcom_adm.c index d56caf1681ff..53f4273b657c 100644 --- a/drivers/dma/qcom/qcom_adm.c +++ b/drivers/dma/qcom/qcom_adm.c @@ -904,7 +904,7 @@ static int adm_dma_probe(struct platform_device *pdev) return ret; } -static int adm_dma_remove(struct platform_device *pdev) +static void adm_dma_remove(struct platform_device *pdev) { struct adm_device *adev = platform_get_drvdata(pdev); struct adm_chan *achan; @@ -927,8 +927,6 @@ static int adm_dma_remove(struct platform_device *pdev) clk_disable_unprepare(adev->core_clk); clk_disable_unprepare(adev->iface_clk); - - return 0; } static const struct of_device_id adm_of_match[] = { @@ -939,7 +937,7 @@ MODULE_DEVICE_TABLE(of, adm_of_match); static struct platform_driver adm_dma_driver = { .probe = adm_dma_probe, - .remove = adm_dma_remove, + .remove_new = adm_dma_remove, .driver = { .name = "adm-dma-engine", .of_match_table = adm_of_match,