linux-kernel - [PATCH] media: amphion: Add missing of_node_put() in vpu_core_parse

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Date:   Mon, 14 Mar 2022 06:09:52 +0000
From:   Lijun Fang <fanglijun3@...wei.com>
To:     <linux-media@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <ming.qian@....com>, <shijie.qin@....com>, <eagle.zhou@....com>,
        <mchehab@...nel.org>, <hverkuil-cisco@...all.nl>,
        <xuqiang36@...wei.com>
Subject: [PATCH] media: amphion: Add missing of_node_put() in vpu_core_parse_dt

The device_node pointer is returned by of_parse_phandle()  with refcount
incremented. We should use of_node_put() on it when done.

Fixes: 9f599f351e86 ("media: amphion: add vpu core driver")
Signed-off-by: Lijun Fang <fanglijun3@...wei.com>
---
 drivers/media/platform/amphion/vpu_core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/media/platform/amphion/vpu_core.c b/drivers/media/platform/amphion/vpu_core.c
index 016554387f3f..74edc4abbdaa 100644
--- a/drivers/media/platform/amphion/vpu_core.c
+++ b/drivers/media/platform/amphion/vpu_core.c
@@ -529,10 +529,12 @@ static int vpu_core_parse_dt(struct vpu_core *core, struct device_node *np)
 	}
 	if (of_address_to_resource(node, 0, &res)) {
 		dev_err(core->dev, "boot-region of_address_to_resource error\n");
+		of_node_put(node);
 		return -EINVAL;
 	}
 	core->fw.phys = res.start;
 	core->fw.length = resource_size(&res);
+	of_node_put(node);
 
 	node = of_parse_phandle(np, "memory-region", 1);
 	if (!node) {
@@ -541,10 +543,12 @@ static int vpu_core_parse_dt(struct vpu_core *core, struct device_node *np)
 	}
 	if (of_address_to_resource(node, 0, &res)) {
 		dev_err(core->dev, "rpc-region of_address_to_resource error\n");
+		of_node_put(node);
 		return -EINVAL;
 	}
 	core->rpc.phys = res.start;
 	core->rpc.length = resource_size(&res);
+	of_node_put(node);
 
 	if (core->rpc.length < core->res->rpc_size + core->res->fwlog_size) {
 		dev_err(core->dev, "the rpc-region <%pad, 0x%x> is not enough\n",
-- 
2.17.1