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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: d3ad120f-74fb-4454-5978-08dd022223c8 X-MS-Exchange-CrossTenant-AuthSource: PAXPR04MB8459.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Nov 2024 07:26:21.2236 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 1W/3pm89Bk89MCyEj8k2XuTiBS36ftmvdG8XklgxxVkA7Tuoh8h7vzestpMTWVTIyBMHVoLEWeVXTw5eEAHOkQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI0PR04MB10854 From: Peng Fan There is kernel dump when do module test: sysfs: cannot create duplicate filename /devices/platform/soc@0/44000000.bus/44000000.dma-controller/dma/dma0chan0 __dma_async_device_channel_register+0x128/0x19c dma_async_device_register+0x150/0x454 fsl_edma_probe+0x6cc/0x8a0 platform_probe+0x68/0xc8 fsl_edma_cleanup_vchan will unlink vchan.chan.device_node, while dma_async_device_unregister needs the link to do __dma_async_device_channel_unregister. So need move fsl_edma_cleanup_vchan after dma_async_device_unregister to make sure channel could be freed. So clean up chan after dma_async_device_unregister to address this. Fixes: 6f93b93b2a1b ("dmaengine: fsl-edma: kill the tasklets upon exit") Signed-off-by: Peng Fan Reviewed-by: Frank Li --- V2: Update commit log drivers/dma/fsl-edma-main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c index f9f1eda79254..01bd5cb24a49 100644 --- a/drivers/dma/fsl-edma-main.c +++ b/drivers/dma/fsl-edma-main.c @@ -668,9 +668,9 @@ static void fsl_edma_remove(struct platform_device *pdev) struct fsl_edma_engine *fsl_edma = platform_get_drvdata(pdev); fsl_edma_irq_exit(pdev, fsl_edma); - fsl_edma_cleanup_vchan(&fsl_edma->dma_dev); of_dma_controller_free(np); dma_async_device_unregister(&fsl_edma->dma_dev); + fsl_edma_cleanup_vchan(&fsl_edma->dma_dev); fsl_disable_clocks(fsl_edma, fsl_edma->drvdata->dmamuxs); } From patchwork Mon Nov 11 07:26:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Peng Fan (OSS)" X-Patchwork-Id: 13870323 Received: from EUR05-AM6-obe.outbound.protection.outlook.com (mail-am6eur05on2044.outbound.protection.outlook.com [40.107.22.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AF23015A842 for ; 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Fixes: 44eb827264de ("dmaengine: fsl-edma: request per-channel IRQ only when channel is allocated") Signed-off-by: Peng Fan --- V2: None drivers/dma/fsl-edma-main.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c index 01bd5cb24a49..89c54eeb4925 100644 --- a/drivers/dma/fsl-edma-main.c +++ b/drivers/dma/fsl-edma-main.c @@ -303,6 +303,7 @@ fsl_edma2_irq_init(struct platform_device *pdev, /* The last IRQ is for eDMA err */ if (i == count - 1) { + fsl_edma->errirq = irq; ret = devm_request_irq(&pdev->dev, irq, fsl_edma_err_handler, 0, "eDMA2-ERR", fsl_edma); @@ -322,10 +323,13 @@ static void fsl_edma_irq_exit( struct platform_device *pdev, struct fsl_edma_engine *fsl_edma) { if (fsl_edma->txirq == fsl_edma->errirq) { - devm_free_irq(&pdev->dev, fsl_edma->txirq, fsl_edma); + if (fsl_edma->txirq >= 0) + devm_free_irq(&pdev->dev, fsl_edma->txirq, fsl_edma); } else { - devm_free_irq(&pdev->dev, fsl_edma->txirq, fsl_edma); - devm_free_irq(&pdev->dev, fsl_edma->errirq, fsl_edma); + if (fsl_edma->txirq >= 0) + devm_free_irq(&pdev->dev, fsl_edma->txirq, fsl_edma); + if (fsl_edma->errirq >= 0) + devm_free_irq(&pdev->dev, fsl_edma->errirq, fsl_edma); } } @@ -485,6 +489,8 @@ static int fsl_edma_probe(struct platform_device *pdev) if (!fsl_edma) return -ENOMEM; + fsl_edma->errirq = -EINVAL; + fsl_edma->txirq = -EINVAL; fsl_edma->drvdata = drvdata; fsl_edma->n_chans = chans; mutex_init(&fsl_edma->fsl_edma_mutex);