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Date:   Fri,  1 Jan 2021 16:54:42 +0000
From:   Yangtao Li <tiny.windzz@...il.com>
To:     myungjoo.ham@...sung.com, kyungmin.park@...sung.com,
        cw00.choi@...sung.com, krzk@...nel.org, shawnguo@...nel.org,
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Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
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Subject: [PATCH 06/31] serial: qcom_geni_serial: fix potential mem leak in qcom_geni_serial_probe()

We should use dev_pm_opp_put_clkname() to free opp table each time
dev_pm_opp_of_add_table() got error.

Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
---
 drivers/tty/serial/qcom_geni_serial.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index 291649f02821..5aada7ebae35 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -1438,9 +1438,12 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
 		return PTR_ERR(port->se.opp_table);
 	/* OPP table is optional */
 	ret = dev_pm_opp_of_add_table(&pdev->dev);
-	if (ret && ret != -ENODEV) {
-		dev_err(&pdev->dev, "invalid OPP table in device tree\n");
-		goto put_clkname;
+	if (ret) {
+		dev_pm_opp_put_clkname(port->se.opp_table);
+		if (ret != -ENODEV) {
+			dev_err(&pdev->dev, "invalid OPP table in device tree\n");
+			return ret;
+		}
 	}
 
 	port->private_data.drv = drv;
@@ -1482,7 +1485,6 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
 	return 0;
 err:
 	dev_pm_opp_of_remove_table(&pdev->dev);
-put_clkname:
 	dev_pm_opp_put_clkname(port->se.opp_table);
 	return ret;
 }
-- 
2.25.1

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