diff options
Diffstat (limited to 'drivers/hwmon/lm87.c')
| -rw-r--r-- | drivers/hwmon/lm87.c | 39 |
1 files changed, 20 insertions, 19 deletions
diff --git a/drivers/hwmon/lm87.c b/drivers/hwmon/lm87.c index 6ba34c3..e229daf 100644 --- a/drivers/hwmon/lm87.c +++ b/drivers/hwmon/lm87.c @@ -60,6 +60,7 @@ #include <linux/hwmon.h> #include <linux/hwmon-vid.h> #include <linux/err.h> +#include <linux/mutex.h> /* * Addresses to scan @@ -176,7 +177,7 @@ static struct i2c_driver lm87_driver = { struct lm87_data { struct i2c_client client; struct class_device *class_dev; - struct semaphore update_lock; + struct mutex update_lock; char valid; /* zero until following fields are valid */ unsigned long last_updated; /* In jiffies */ @@ -253,11 +254,11 @@ static void set_in_min(struct device *dev, const char *buf, int nr) struct lm87_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); lm87_write_value(client, nr<6 ? LM87_REG_IN_MIN(nr) : LM87_REG_AIN_MIN(nr-6), data->in_min[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); } static void set_in_max(struct device *dev, const char *buf, int nr) @@ -266,11 +267,11 @@ static void set_in_max(struct device *dev, const char *buf, int nr) struct lm87_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); lm87_write_value(client, nr<6 ? LM87_REG_IN_MAX(nr) : LM87_REG_AIN_MAX(nr-6), data->in_max[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); } #define set_in(offset) \ @@ -327,10 +328,10 @@ static void set_temp_low(struct device *dev, const char *buf, int nr) struct lm87_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->temp_low[nr] = TEMP_TO_REG(val); lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); } static void set_temp_high(struct device *dev, const char *buf, int nr) @@ -339,10 +340,10 @@ static void set_temp_high(struct device *dev, const char *buf, int nr) struct lm87_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->temp_high[nr] = TEMP_TO_REG(val); lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); } #define set_temp(offset) \ @@ -411,11 +412,11 @@ static void set_fan_min(struct device *dev, const char *buf, int nr) struct lm87_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->fan_min[nr] = FAN_TO_REG(val, FAN_DIV_FROM_REG(data->fan_div[nr])); lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); } /* Note: we save and restore the fan minimum here, because its value is @@ -431,7 +432,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf, unsigned long min; u8 reg; - down(&data->update_lock); + mutex_lock(&data->update_lock); min = FAN_FROM_REG(data->fan_min[nr], FAN_DIV_FROM_REG(data->fan_div[nr])); @@ -441,7 +442,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf, case 4: data->fan_div[nr] = 2; break; case 8: data->fan_div[nr] = 3; break; default: - up(&data->update_lock); + mutex_unlock(&data->update_lock); return -EINVAL; } @@ -459,7 +460,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf, data->fan_min[nr] = FAN_TO_REG(min, val); lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } @@ -522,10 +523,10 @@ static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const struct lm87_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->aout = AOUT_TO_REG(val); lm87_write_value(client, LM87_REG_AOUT, data->aout); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout); @@ -589,7 +590,7 @@ static int lm87_detect(struct i2c_adapter *adapter, int address, int kind) /* We can fill in the remaining client fields */ strlcpy(new_client->name, "lm87", I2C_NAME_SIZE); data->valid = 0; - init_MUTEX(&data->update_lock); + mutex_init(&data->update_lock); /* Tell the I2C layer a new client has arrived */ if ((err = i2c_attach_client(new_client))) @@ -744,7 +745,7 @@ static struct lm87_data *lm87_update_device(struct device *dev) struct i2c_client *client = to_i2c_client(dev); struct lm87_data *data = i2c_get_clientdata(client); - down(&data->update_lock); + mutex_lock(&data->update_lock); if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { int i, j; @@ -813,7 +814,7 @@ static struct lm87_data *lm87_update_device(struct device *dev) data->valid = 1; } - up(&data->update_lock); + mutex_unlock(&data->update_lock); return data; } |
