hwmon: (gpio_fan) Use error value returned from get_fan_speed_index()

get_fan_speed_index() returns -EINVAL in case of errors, only to have it
ignored and replaced with -ENODEV. Make it return -ENODEV and use it.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/gpio-fan.c b/drivers/hwmon/gpio-fan.c
index b7d6a57..155c78f 100644 (file)
--- a/drivers/hwmon/gpio-fan.c
+++ b/drivers/hwmon/gpio-fan.c
@@ -169,7 +169,7 @@ static int get_fan_speed_index(struct gpio_fan_data *fan_data)
        dev_warn(&fan_data->pdev->dev,
                 "missing speed array entry for GPIO value 0x%x\n", ctrl_val);
 
-       return -EINVAL;
+       return -ENODEV;
 }
 
 static int rpm_to_speed_index(struct gpio_fan_data *fan_data, int rpm)
@@ -384,7 +384,7 @@ static int fan_ctrl_init(struct gpio_fan_data *fan_data,
        fan_data->pwm_enable = true; /* Enable manual fan speed control. */
        fan_data->speed_index = get_fan_speed_index(fan_data);
        if (fan_data->speed_index < 0)
-               return -ENODEV;
+               return fan_data->speed_index;
 
        return 0;
 }