diff options
Diffstat (limited to 'drivers/hwmon/emc2103.c')
| -rw-r--r-- | drivers/hwmon/emc2103.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/hwmon/emc2103.c b/drivers/hwmon/emc2103.c index 60eddc7b0270..9b8e925af030 100644 --- a/drivers/hwmon/emc2103.c +++ b/drivers/hwmon/emc2103.c @@ -277,8 +277,10 @@ fan1_input_show(struct device *dev, struct device_attribute *da, char *buf) { struct emc2103_data *data = emc2103_update_device(dev); int rpm = 0; + mutex_lock(&data->update_lock); if (data->fan_tach != 0) rpm = (FAN_RPM_FACTOR * data->fan_multiplier) / data->fan_tach; + mutex_unlock(&data->update_lock); return sprintf(buf, "%d\n", rpm); } @@ -363,10 +365,12 @@ fan1_target_show(struct device *dev, struct device_attribute *da, char *buf) struct emc2103_data *data = emc2103_update_device(dev); int rpm = 0; + mutex_lock(&data->update_lock); /* high byte of 0xff indicates disabled so return 0 */ if ((data->fan_target != 0) && ((data->fan_target & 0x1fe0) != 0x1fe0)) rpm = (FAN_RPM_FACTOR * data->fan_multiplier) / data->fan_target; + mutex_unlock(&data->update_lock); return sprintf(buf, "%d\n", rpm); } |