linux-kernel - [PATCH] cpufreq: scmi: Fix device_node reference leak in scmi_cpu_domain

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Message-Id: <20260121-b4-scmi-cpufreq-v1-1-b0547210feac@gmail.com>
Date: Wed, 21 Jan 2026 23:32:06 +0800
From: Felix Gu <ustc.gu@...il.com>
To: Sudeep Holla <sudeep.holla@....com>, 
 Cristian Marussi <cristian.marussi@....com>, 
 "Rafael J. Wysocki" <rafael@...nel.org>, 
 Viresh Kumar <viresh.kumar@...aro.org>, 
 Ulf Hansson <ulf.hansson@...aro.org>
Cc: arm-scmi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Felix Gu <ustc.gu@...il.com>
Subject: [PATCH] cpufreq: scmi: Fix device_node reference leak in
 scmi_cpu_domain_id()

When calling of_parse_phandle_with_args(), the caller is responsible
to call of_node_put() to release the reference of device node.
In scmi_cpu_domain_id(), it does not release the reference.

Fixes: e336baa4193e ("cpufreq: scmi: Prepare to move OF parsing of domain-id to cpufreq")
Signed-off-by: Felix Gu <ustc.gu@...il.com>
---
 drivers/cpufreq/scmi-cpufreq.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c
index e0e1756180b0..c7a3b038385b 100644
--- a/drivers/cpufreq/scmi-cpufreq.c
+++ b/drivers/cpufreq/scmi-cpufreq.c
@@ -101,6 +101,7 @@ static int scmi_cpu_domain_id(struct device *cpu_dev)
 			return -EINVAL;
 	}

+	of_node_put(domain_id.np);
 	return domain_id.args[0];
 }

---
base-commit: 053966c344dbd346e71305f530e91ea77916189f
change-id: 20260121-b4-scmi-cpufreq-243a7676eb4c

Best regards,
-- 
Felix Gu <ustc.gu@...il.com>