[PATCH -next] ASoC: SOF: mediatek: Add missing of_node_put() in platform_parse_resource()

[PATCH -next] ASoC: SOF: mediatek: Add missing of_node_put() in platform_parse_resource()

[Yang Yingliang]

The node pointer is returned by of_parse_phandle() with
refcount incremented in platform_parse_resource(). Calling
of_node_put() to aovid the refcount leak.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
 sound/soc/sof/mediatek/mt8195/mt8195.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/sof/mediatek/mt8195/mt8195.c b/sound/soc/sof/mediatek/mt8195/mt8195.c
index 40e5a25875a6..55d9812870a4 100644
--- a/sound/soc/sof/mediatek/mt8195/mt8195.c
+++ b/sound/soc/sof/mediatek/mt8195/mt8195.c
@@ -43,6 +43,7 @@ static int platform_parse_resource(struct platform_device *pdev, void *data)
 	}
 
 	ret = of_address_to_resource(mem_region, 0, &res);
+	of_node_put(mem_region);
 	if (ret) {
 		dev_err(dev, "of_address_to_resource dma failed\n");
 		return ret;
@@ -64,6 +65,7 @@ static int platform_parse_resource(struct platform_device *pdev, void *data)
 	}
 
 	ret = of_address_to_resource(mem_region, 0, &res);
+	of_node_put(mem_region);
 	if (ret) {
 		dev_err(dev, "of_address_to_resource sysmem failed\n");
 		return ret;
-- 
2.25.1

Re: [PATCH -next] ASoC: SOF: mediatek: Add missing of_node_put() in platform_parse_resource()

[Mark Brown]

On Thu, 25 Nov 2021 15:16:08 +0800, Yang Yingliang wrote:
> The node pointer is returned by of_parse_phandle() with
> refcount incremented in platform_parse_resource(). Calling
> of_node_put() to aovid the refcount leak.
> 
> 

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/1] ASoC: SOF: mediatek: Add missing of_node_put() in platform_parse_resource()
      commit: fc6c62cf1cbf24c81ccb1d248120311336d5f3cc

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark