diff options
Diffstat (limited to 'drivers/hwmon/lm78.c')
| -rw-r--r-- | drivers/hwmon/lm78.c | 51 |
1 files changed, 26 insertions, 25 deletions
diff --git a/drivers/hwmon/lm78.c b/drivers/hwmon/lm78.c index e404001e20da..94be3d797e61 100644 --- a/drivers/hwmon/lm78.c +++ b/drivers/hwmon/lm78.c @@ -27,6 +27,7 @@ #include <linux/hwmon.h> #include <linux/hwmon-vid.h> #include <linux/err.h> +#include <linux/mutex.h> #include <asm/io.h> /* Addresses to scan */ @@ -131,10 +132,10 @@ static inline int TEMP_FROM_REG(s8 val) struct lm78_data { struct i2c_client client; struct class_device *class_dev; - struct semaphore lock; + struct mutex lock; enum chips type; - struct semaphore update_lock; + struct mutex update_lock; char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ @@ -157,8 +158,8 @@ static int lm78_isa_attach_adapter(struct i2c_adapter *adapter); static int lm78_detect(struct i2c_adapter *adapter, int address, int kind); static int lm78_detach_client(struct i2c_client *client); -static int lm78_read_value(struct i2c_client *client, u8 register); -static int lm78_write_value(struct i2c_client *client, u8 register, u8 value); +static int lm78_read_value(struct i2c_client *client, u8 reg); +static int lm78_write_value(struct i2c_client *client, u8 reg, u8 value); static struct lm78_data *lm78_update_device(struct device *dev); static void lm78_init_client(struct i2c_client *client); @@ -207,10 +208,10 @@ static ssize_t set_in_min(struct device *dev, const char *buf, struct lm78_data *data = i2c_get_clientdata(client); unsigned long val = simple_strtoul(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->in_min[nr] = IN_TO_REG(val); lm78_write_value(client, LM78_REG_IN_MIN(nr), data->in_min[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } @@ -221,10 +222,10 @@ static ssize_t set_in_max(struct device *dev, const char *buf, struct lm78_data *data = i2c_get_clientdata(client); unsigned long val = simple_strtoul(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->in_max[nr] = IN_TO_REG(val); lm78_write_value(client, LM78_REG_IN_MAX(nr), data->in_max[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } @@ -288,10 +289,10 @@ static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, struct lm78_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->temp_over = TEMP_TO_REG(val); lm78_write_value(client, LM78_REG_TEMP_OVER, data->temp_over); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } @@ -307,10 +308,10 @@ static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, struct lm78_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->temp_hyst = TEMP_TO_REG(val); lm78_write_value(client, LM78_REG_TEMP_HYST, data->temp_hyst); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } @@ -342,10 +343,10 @@ static ssize_t set_fan_min(struct device *dev, const char *buf, struct lm78_data *data = i2c_get_clientdata(client); unsigned long val = simple_strtoul(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); lm78_write_value(client, LM78_REG_FAN_MIN(nr), data->fan_min[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } @@ -368,7 +369,7 @@ 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], DIV_FROM_REG(data->fan_div[nr])); @@ -380,7 +381,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf, default: dev_err(&client->dev, "fan_div value %ld not " "supported. Choose one of 1, 2, 4 or 8!\n", val); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return -EINVAL; } @@ -398,7 +399,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf, data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); lm78_write_value(client, LM78_REG_FAN_MIN(nr), data->fan_min[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } @@ -548,7 +549,7 @@ static int lm78_detect(struct i2c_adapter *adapter, int address, int kind) new_client = &data->client; if (is_isa) - init_MUTEX(&data->lock); + mutex_init(&data->lock); i2c_set_clientdata(new_client, data); new_client->addr = address; new_client->adapter = adapter; @@ -598,7 +599,7 @@ static int lm78_detect(struct i2c_adapter *adapter, int address, int kind) data->type = kind; 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))) @@ -697,10 +698,10 @@ static int lm78_read_value(struct i2c_client *client, u8 reg) int res; if (i2c_is_isa_client(client)) { struct lm78_data *data = i2c_get_clientdata(client); - down(&data->lock); + mutex_lock(&data->lock); outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET); res = inb_p(client->addr + LM78_DATA_REG_OFFSET); - up(&data->lock); + mutex_unlock(&data->lock); return res; } else return i2c_smbus_read_byte_data(client, reg); @@ -717,10 +718,10 @@ static int lm78_write_value(struct i2c_client *client, u8 reg, u8 value) { if (i2c_is_isa_client(client)) { struct lm78_data *data = i2c_get_clientdata(client); - down(&data->lock); + mutex_lock(&data->lock); outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET); outb_p(value, client->addr + LM78_DATA_REG_OFFSET); - up(&data->lock); + mutex_unlock(&data->lock); return 0; } else return i2c_smbus_write_byte_data(client, reg, value); @@ -742,7 +743,7 @@ static struct lm78_data *lm78_update_device(struct device *dev) struct lm78_data *data = i2c_get_clientdata(client); int i; - down(&data->update_lock); + mutex_lock(&data->update_lock); if (time_after(jiffies, data->last_updated + HZ + HZ / 2) || !data->valid) { @@ -786,7 +787,7 @@ static struct lm78_data *lm78_update_device(struct device *dev) data->fan_div[2] = 1; } - up(&data->update_lock); + mutex_unlock(&data->update_lock); return data; } |