diff options
| -rw-r--r-- | drivers/hwmon/it87.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index 5e39e2d4038..a65ba31cad2 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -539,15 +539,14 @@ static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, struct it87_data *data = dev_get_drvdata(dev); long val; + u8 reg; if (strict_strtol(buf, 10, &val) < 0) return -EINVAL; - mutex_lock(&data->update_lock); - - data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE); - data->sensor &= ~(1 << nr); - data->sensor &= ~(8 << nr); + reg = it87_read_value(data, IT87_REG_TEMP_ENABLE); + reg &= ~(1 << nr); + reg &= ~(8 << nr); if (val == 2) { /* backwards compatibility */ dev_warn(dev, "Sensor type 2 is deprecated, please use 4 " "instead\n"); @@ -555,13 +554,14 @@ static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, } /* 3 = thermal diode; 4 = thermistor; 0 = disabled */ if (val == 3) - data->sensor |= 1 << nr; + reg |= 1 << nr; else if (val == 4) - data->sensor |= 8 << nr; - else if (val != 0) { - mutex_unlock(&data->update_lock); + reg |= 8 << nr; + else if (val != 0) return -EINVAL; - } + + mutex_lock(&data->update_lock); + data->sensor = reg; it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor); mutex_unlock(&data->update_lock); return count; |