linux-kernel - [PATCH] thermal: int3400_thermal: fix error handling in int3400_thermal

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Date:   Sat, 30 Dec 2017 01:05:21 +0300
From:   Alexey Khoroshilov <khoroshilov@...ras.ru>
To:     Zhang Rui <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>
Cc:     Alexey Khoroshilov <khoroshilov@...ras.ru>,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        ldv-project@...uxtesting.org
Subject: [PATCH] thermal: int3400_thermal: fix error handling in int3400_thermal_probe()

There are resources that are not dealocated on failure path
in int3400_thermal_probe().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>
---
 drivers/thermal/int340x_thermal/int3400_thermal.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/thermal/int340x_thermal/int3400_thermal.c b/drivers/thermal/int340x_thermal/int3400_thermal.c
index 8ee38f55c7f3..43b90fd577e4 100644
--- a/drivers/thermal/int340x_thermal/int3400_thermal.c
+++ b/drivers/thermal/int340x_thermal/int3400_thermal.c
@@ -319,17 +319,21 @@ static int int3400_thermal_probe(struct platform_device *pdev)
 
 	result = sysfs_create_group(&pdev->dev.kobj, &uuid_attribute_group);
 	if (result)
-		goto free_zone;
+		goto free_rel_misc;
 
 	result = acpi_install_notify_handler(
 			priv->adev->handle, ACPI_DEVICE_NOTIFY, int3400_notify,
 			(void *)priv);
 	if (result)
-		goto free_zone;
+		goto free_sysfs;
 
 	return 0;
 
-free_zone:
+free_sysfs:
+	sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
+free_rel_misc:
+	if (!priv->rel_misc_dev_res)
+		acpi_thermal_rel_misc_device_remove(priv->adev->handle);
 	thermal_zone_device_unregister(priv->thermal);
 free_art_trt:
 	kfree(priv->trts);
-- 
2.7.4