From 70cf59b8ffb4899b991e4f9668af0ea999ae1b60 Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Sun, 13 Dec 2020 16:35:13 +0100 Subject: [PATCH] staging: mt7621-dma: Fix a resource leak in an error handling path commit d887d6104adeb94d1b926936ea21f07367f0ff9f upstream. If an error occurs after calling 'mtk_hsdma_init()', it must be undone by a corresponding call to 'mtk_hsdma_uninit()' as already done in the remove function. Fixes: 0853c7a53eb3 ("staging: mt7621-dma: ralink: add rt2880 dma engine") Signed-off-by: Christophe JAILLET Cc: stable Link: https://lore.kernel.org/r/20201213153513.138723-1-christophe.jaillet@wanadoo.fr Signed-off-by: Greg Kroah-Hartman --- drivers/staging/mt7621-dma/mtk-hsdma.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/staging/mt7621-dma/mtk-hsdma.c b/drivers/staging/mt7621-dma/mtk-hsdma.c index d964642d95a3c..bf2772af1045f 100644 --- a/drivers/staging/mt7621-dma/mtk-hsdma.c +++ b/drivers/staging/mt7621-dma/mtk-hsdma.c @@ -714,7 +714,7 @@ static int mtk_hsdma_probe(struct platform_device *pdev) ret = dma_async_device_register(dd); if (ret) { dev_err(&pdev->dev, "failed to register dma device\n"); - return ret; + goto err_uninit_hsdma; } ret = of_dma_controller_register(pdev->dev.of_node, @@ -730,6 +730,8 @@ static int mtk_hsdma_probe(struct platform_device *pdev) err_unregister: dma_async_device_unregister(dd); +err_uninit_hsdma: + mtk_hsdma_uninit(hsdma); return ret; }