linux-kernel - [PATCH 5.15 389/667] soc: qcom: smsm: Fix missing of_node_put() in smsm_parse

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Date:   Tue,  7 Jun 2022 19:00:54 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Miaoqian Lin <linmq006@...il.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 389/667] soc: qcom: smsm: Fix missing of_node_put() in smsm_parse_ipc

From: Miaoqian Lin <linmq006@...il.com>

[ Upstream commit aad66a3c78da668f4506356c2fdb70b7a19ecc76 ]

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

Fixes: c97c4090ff72 ("soc: qcom: smsm: Add driver for Qualcomm SMSM")
Signed-off-by: Miaoqian Lin <linmq006@...il.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Link: https://lore.kernel.org/r/20220308073648.24634-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/soc/qcom/smsm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/soc/qcom/smsm.c b/drivers/soc/qcom/smsm.c
index ef15d014c03a..9df9bba242f3 100644
--- a/drivers/soc/qcom/smsm.c
+++ b/drivers/soc/qcom/smsm.c
@@ -374,6 +374,7 @@ static int smsm_parse_ipc(struct qcom_smsm *smsm, unsigned host_id)
 		return 0;
 
 	host->ipc_regmap = syscon_node_to_regmap(syscon);
+	of_node_put(syscon);
 	if (IS_ERR(host->ipc_regmap))
 		return PTR_ERR(host->ipc_regmap);
 
-- 
2.35.1