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

From: Yang Yingliang
Date: Thu Nov 25 2021 - 02:11:18 EST


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@xxxxxxxxxx>
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
---
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