[PATCH 1/2] hwmon: (gpio-fan) Check return value from devm_add_action_or_reset

[Guenter Roeck]

devm_add_action_or_reset() can fail due to a memory allocation failure.
Check for it and return the error if that happens.

Fixes: 9534784550ab ("hwmon: (gpio-fan) Use 
devm_thermal_of_cooling_device_register")
Signed-off-by: Guenter Roeck <li...@roeck-us.net>
---
 drivers/hwmon/gpio-fan.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/gpio-fan.c b/drivers/hwmon/gpio-fan.c
index 84753680a4e8..54c27e683ee1 100644
--- a/drivers/hwmon/gpio-fan.c
+++ b/drivers/hwmon/gpio-fan.c
@@ -524,7 +524,9 @@ static int gpio_fan_probe(struct platform_device *pdev)
                err = fan_ctrl_init(fan_data);
                if (err)
                        return err;
-               devm_add_action_or_reset(dev, gpio_fan_stop, fan_data);
+               err = devm_add_action_or_reset(dev, gpio_fan_stop, fan_data);
+               if (err)
+                       return err;
        }
 
        /* Make this driver part of hwmon class. */
-- 
2.7.4