linux-kernel - [PATCH] cpufreq: sti-cpufreq: fix mem leak in sti_cpufreq_set_opp

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Message-Id: <20201012140141.20296-1-frank@allwinnertech.com>
Date:   Mon, 12 Oct 2020 22:01:41 +0800
From:   Frank Lee <frank@...winnertech.com>
To:     patrice.chotard@...com, rjw@...ysocki.net, viresh.kumar@...aro.org,
        tiny.windzz@...il.com
Cc:     linux-arm-kernel@...ts.infradead.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Yangtao Li <frank@...winnertech.com>
Subject: [PATCH] cpufreq: sti-cpufreq: fix mem leak in sti_cpufreq_set_opp_info()

From: Yangtao Li <tiny.windzz@...il.com>

Use dev_pm_opp_put_prop_name() to avoid mem leak, which free opp_table.

Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
Signed-off-by: Yangtao Li <frank@...winnertech.com>
---
 drivers/cpufreq/sti-cpufreq.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/sti-cpufreq.c b/drivers/cpufreq/sti-cpufreq.c
index a5ad96d29adc..9668a48dad33 100644
--- a/drivers/cpufreq/sti-cpufreq.c
+++ b/drivers/cpufreq/sti-cpufreq.c
@@ -222,7 +222,8 @@ static int sti_cpufreq_set_opp_info(void)
 	opp_table = dev_pm_opp_set_supported_hw(dev, version, VERSION_ELEMENTS);
 	if (IS_ERR(opp_table)) {
 		dev_err(dev, "Failed to set supported hardware\n");
-		return PTR_ERR(opp_table);
+		ret = PTR_ERR(opp_table);
+		goto err_put_prop_name;
 	}
 
 	dev_dbg(dev, "pcode: %d major: %d minor: %d substrate: %d\n",
@@ -231,6 +232,10 @@ static int sti_cpufreq_set_opp_info(void)
 		version[0], version[1], version[2]);
 
 	return 0;
+
+err_put_prop_name:
+	dev_pm_opp_put_prop_name(opp_table);
+	return ret;
 }
 
 static int sti_cpufreq_fetch_syscon_registers(void)
-- 
2.28.0