diff options
| -rw-r--r-- | drivers/hwmon/w83627ehf.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c index 2420f1c6f4e9..2f17f99e0ae1 100644 --- a/drivers/hwmon/w83627ehf.c +++ b/drivers/hwmon/w83627ehf.c @@ -346,7 +346,10 @@ struct w83627ehf_data { 2->thermal cruise mode (also called SmartFan I) 3->fan speed cruise mode 4->variable thermal cruise (also called - SmartFan III) */ + SmartFan III) + 5->enhanced variable thermal cruise (also called + SmartFan IV) */ + u8 pwm_enable_orig[4]; /* original value of pwm_enable */ u8 pwm_num; /* number of pwm */ u8 pwm[4]; u8 target_temp[4]; @@ -1055,7 +1058,7 @@ store_pwm_enable(struct device *dev, struct device_attribute *attr, if (err < 0) return err; - if (!val || (val > 4)) + if (!val || (val > 4 && val != data->pwm_enable_orig[nr])) return -EINVAL; mutex_lock(&data->update_lock); reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]); @@ -1617,6 +1620,11 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev) /* Read fan clock dividers immediately */ w83627ehf_update_fan_div(data); + /* Read pwm data to save original values */ + w83627ehf_update_pwm_common(dev, data); + for (i = 0; i < data->pwm_num; i++) + data->pwm_enable_orig[i] = data->pwm_enable[i]; + /* Register sysfs hooks */ for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays); i++) { err = device_create_file(dev, &sda_sf3_arrays[i].dev_attr); |