[PATCH 5.4 43/62] dmaengine: mediatek: mtk-hsdma: Fix a resource leak in the error handling path of the probe function

Greg Kroah-Hartman
2021-01-15T12:35:54Z

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

commit 33cbd54dc515cc04b5a603603414222b4bb1448d upstream.

'mtk_hsdma_hw_deinit()' should be called in the error handling path of the
probe function to undo a previous 'mtk_hsdma_hw_init()' call, as already
done in the remove function.

Fixes: 548c4597e984 ("dmaengine: mediatek: Add MediaTek High-Speed DMA controller for MT7622 and MT7623 SoC")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/20201219124718.182664-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/dma/mediatek/mtk-hsdma.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/dma/mediatek/mtk-hsdma.c
+++ b/drivers/dma/mediatek/mtk-hsdma.c
@@ -1007,6 +1007,7 @@ static int mtk_hsdma_probe(struct platfo
return 0;

err_free:
+ mtk_hsdma_hw_deinit(hsdma);
of_dma_controller_free(pdev->dev.of_node);
err_unregister:
dma_async_device_unregister(dd);