linux-kernel - [PATCH] rpmsg: qcom_smd: Fix refcount leak in qcom_smd_parse

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Message-Id: <20220511120737.57374-1-linmq006@gmail.com>
Date:   Wed, 11 May 2022 16:07:37 +0400
From:   Miaoqian Lin <linmq006@...il.com>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-remoteproc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     linmq006@...il.com
Subject: [PATCH] rpmsg: qcom_smd: Fix refcount leak in qcom_smd_parse_edge

of_parse_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.

Fixes: 53e2822e56c7 ("rpmsg: Introduce Qualcomm SMD backend")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
---
 drivers/rpmsg/qcom_smd.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c
index 764c980507be..e559c8e468e3 100644
--- a/drivers/rpmsg/qcom_smd.c
+++ b/drivers/rpmsg/qcom_smd.c
@@ -1383,6 +1383,7 @@ static int qcom_smd_parse_edge(struct device *dev,
 		}
 
 		edge->ipc_regmap = syscon_node_to_regmap(syscon_np);
+		of_node_put(syscon_np);
 		if (IS_ERR(edge->ipc_regmap)) {
 			ret = PTR_ERR(edge->ipc_regmap);
 			goto put_node;
-- 
2.25.1