hwmon: (aspeed-pwm-tacho) Use devm_thermal_of_cooling_device_register

Use devm_thermal_of_cooling_device_register() to register the cooling
device. As a side effect, this fixes a driver bug:
thermal_cooling_device_unregister() was not called on removal.

Fixes: f198907d2ff6d ("hwmon: (aspeed-pwm-tacho) cooling device support.")
Cc: Mykola Kostenok <c_mykolak@mellanox.com>
Cc: Joel Stanley <joel@jms.id.au>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Patrick Venture <venture@google.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/drivers/hwmon/aspeed-pwm-tacho.c b/drivers/hwmon/aspeed-pwm-tacho.c
index c4dd6301e7c8..0daf0b32aa4a 100644
--- a/drivers/hwmon/aspeed-pwm-tacho.c
+++ b/drivers/hwmon/aspeed-pwm-tacho.c
@@ -830,10 +830,8 @@ static int aspeed_create_pwm_cooling(struct device *dev,
         }
         snprintf(cdev->name, MAX_CDEV_NAME_LEN, "%pOFn%d", child, pwm_port);
 
-        cdev->tcdev = thermal_of_cooling_device_register(child,
-                                                         cdev->name,
-                                                         cdev,
-                                                         &aspeed_pwm_cool_ops);
+        cdev->tcdev = devm_thermal_of_cooling_device_register(dev, child,
+                                        cdev->name, cdev, &aspeed_pwm_cool_ops);
         if (IS_ERR(cdev->tcdev))
                 return PTR_ERR(cdev->tcdev);