linux-kernel - [PATCH] cpufreq: governor: Free dbs_data directly when gov->init() fails

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Message-ID: <20230826012415.1126955-1-liaochang1@huawei.com>
Date:   Sat, 26 Aug 2023 01:24:15 +0000
From:   Liao Chang <liaochang1@...wei.com>
To:     <rafael@...nel.org>, <viresh.kumar@...aro.org>
CC:     <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] cpufreq: governor: Free dbs_data directly when gov->init() fails

Due to the kobject embedded in the dbs_data doest not has a release()
method yet, it needs to use kfree() to free dbs_data directly when
governor fails to allocate the tunner field of dbs_data.

Signed-off-by: Liao Chang <liaochang1@...wei.com>
---
 drivers/cpufreq/cpufreq_governor.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
index 85da677c43d6..6e1ac864e87e 100644
--- a/drivers/cpufreq/cpufreq_governor.c
+++ b/drivers/cpufreq/cpufreq_governor.c
@@ -438,8 +438,10 @@ int cpufreq_dbs_governor_init(struct cpufreq_policy *policy)
 	gov_attr_set_init(&dbs_data->attr_set, &policy_dbs->list);
 
 	ret = gov->init(dbs_data);
-	if (ret)
+	if (ret) {
+		kfree(dbs_data);
 		goto free_policy_dbs_info;
+	}
 
 	/*
 	 * The sampling interval should not be less than the transition latency
-- 
2.34.1