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staging: mt7621-dma: Fix a resource leak in an error handling path

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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: 0853c7a53e ("staging: mt7621-dma: ralink: add rt2880 dma engine")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20201213153513.138723-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christophe JAILLET 2020-12-13 16:35:13 +01:00 • committed by Greg Kroah-Hartman
commit 70cf59b8ff
1 changed files with 3 additions and 1 deletions
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4
drivers/staging/mt7621-dma/mtk-hsdma.c
View file

@ -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;
}