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Mon, 26 Oct 2026 16:53:54 +0000 Date: Mon, 26 Oct 2026 11:53:46 -0500 From: Frank Li To: Christophe JAILLET Cc: Xianwei Zhao , Vinod Koul , Frank Li , linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, linux-amlogic@lists.infradead.org, dmaengine@vger.kernel.org Subject: Re: [PATCH v2] dmaengine: amlogic: Fix missing destroy_workqueue() at error path in aml_dma_probe() Message-ID: References: <13a835b1770e360af7991bb4c91ce52a8d01e331.1792785154.git.christophe.jaillet@wanadoo.fr> Content-Disposition: inline In-Reply-To: <13a835b1770e360af7991bb4c91ce52a8d01e331.1792785154.git.christophe.jaillet@wanadoo.fr> X-ClientProxiedBy: PH5P222CA0008.NAMP222.PROD.OUTLOOK.COM (2603:10b6:510:34b::10) To MI3PR04MB12438.eurprd04.prod.outlook.com (2603:10a6:290:76::14) X-Archived-By: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MI3PR04MB12438:EE_|DU4PR04MB10340:EE_ X-MS-Office365-Filtering-Correlation-Id: 6986124c-fea4-49a6-a141-08df3381b852 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|1800799024|376014|19092799006|366016|261026140227099003|260925022911599003|260925021311599003|260925021911599003|11063799006|56012099006|261009223027099003|261021123027099003|261022105027099003|261021121427099003|10067099003|261026121527099003|22082099003|18002099003|6133799003; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" X-Spam-Status: No, score=-14.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Sat, Oct 24, 2026 at 11:05:13AM +0200, Christophe JAILLET wrote: > If an error occurs after the alloc_ordered_workqueue() call, the > corresponding memory is never released. > > Use the managed version instead, as already done by most functions in the > probe and simplify the remove function accordingly. > > This avoids the leak. > > Fixes: b84b5197e344 ("dmaengine: amlogic: Add general DMA driver for A9") > Signed-off-by: Christophe JAILLET > --- Reviewed-by: Frank Li > Compile tested only. > > Changes in v2: > - update the subject [Franck Li] > > v1: https://lore.kernel.org/lkml/93183551770e260aff993bb4cf1ce5ba8dc1e732.1792785154.git.christophe.jaillet@wanadoo.fr/ > --- > drivers/dma/amlogic-dma.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/drivers/dma/amlogic-dma.c b/drivers/dma/amlogic-dma.c > index 684121d13fca..791bd82743d3 100644 > --- a/drivers/dma/amlogic-dma.c > +++ b/drivers/dma/amlogic-dma.c > @@ -620,7 +620,7 @@ static int aml_dma_probe(struct platform_device *pdev) > if (!aml_dma) > return -ENOMEM; > > - aml_dma->free_wq = alloc_ordered_workqueue("aml_dma_free", 0); > + aml_dma->free_wq = devm_alloc_ordered_workqueue(&pdev->dev, "aml_dma_free", 0); > if (!aml_dma->free_wq) > return -ENOMEM; > > @@ -712,7 +712,6 @@ static void aml_dma_remove(struct platform_device *pdev) > if (aml_chan) > tasklet_kill(&aml_chan->vchan.task); > } > - destroy_workqueue(aml_dma->free_wq); > } > > static const struct of_device_id aml_dma_ids[] = { > -- > 2.56.0 > _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic