linux-kernel - [PATCH -next] ASoC: SOF: mediatek: Add missing of_node_put() in platform_parse

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Message-ID: <20211125071608.3056715-1-yangyingliang@huawei.com>
Date:   Thu, 25 Nov 2021 15:16:08 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <alsa-devel@...a-project.org>,
        <sound-open-firmware@...a-project.org>
CC:     <broonie@...nel.org>, <yc.hung@...iatek.com>,
        <daniel.baluta@....com>
Subject: [PATCH -next] ASoC: SOF: mediatek: Add missing of_node_put() in platform_parse_resource()

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@...wei.com>
Signed-off-by: Yang Yingliang <yangyingliang@...wei.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