From b3bbbf9da38c2735dc25f50e62775216dfd756f6 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 17 Nov 2025 17:12:58 +0100 Subject: [PATCH] dmaengine: ti: k3-udma: fix device leak on udma lookup commit 430f7803b69cd5e5694e5dfc884c6628870af36e upstream. Make sure to drop the reference taken when looking up the UDMA platform device. Note that holding a reference to a platform device does not prevent its driver data from going away so there is no point in keeping the reference after the lookup helper returns. Fixes: d70241913413 ("dmaengine: ti: k3-udma: Add glue layer for non DMAengine users") Fixes: 1438cde8fe9c ("dmaengine: ti: k3-udma: add missing put_device() call in of_xudma_dev_get()") Cc: stable@vger.kernel.org # 5.6: 1438cde8fe9c Cc: Grygorii Strashko Cc: Yu Kuai Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20251117161258.10679-17-johan@kernel.org Signed-off-by: Vinod Koul Signed-off-by: Greg Kroah-Hartman --- drivers/dma/ti/k3-udma-private.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/ti/k3-udma-private.c b/drivers/dma/ti/k3-udma-private.c index 05228bf000333..624360423ef17 100644 --- a/drivers/dma/ti/k3-udma-private.c +++ b/drivers/dma/ti/k3-udma-private.c @@ -42,9 +42,9 @@ struct udma_dev *of_xudma_dev_get(struct device_node *np, const char *property) } ud = platform_get_drvdata(pdev); + put_device(&pdev->dev); if (!ud) { pr_debug("UDMA has not been probed\n"); - put_device(&pdev->dev); return ERR_PTR(-EPROBE_DEFER); } -- 2.47.3