#include <linux/i2c.h>
#include <linux/hwmon.h>
#include <linux/err.h>
-#include <linux/mutex.h>
/* Addresses to scan */
static unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b, I2C_CLIENT_END };
struct lm77_data {
struct i2c_client client;
struct class_device *class_dev;
- struct mutex update_lock;
+ struct semaphore update_lock;
char valid;
unsigned long last_updated; /* In jiffies */
int temp_input; /* Temperatures */
struct lm77_data *data = i2c_get_clientdata(client); \
long val = simple_strtoul(buf, NULL, 10); \
\
- mutex_lock(&data->update_lock); \
+ down(&data->update_lock); \
data->value = val; \
lm77_write_value(client, reg, LM77_TEMP_TO_REG(data->value)); \
- mutex_unlock(&data->update_lock); \
+ up(&data->update_lock); \
return count; \
}
struct lm77_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
- mutex_lock(&data->update_lock);
+ down(&data->update_lock);
data->temp_hyst = data->temp_crit - val;
lm77_write_value(client, LM77_REG_TEMP_HYST,
LM77_TEMP_TO_REG(data->temp_hyst));
- mutex_unlock(&data->update_lock);
+ up(&data->update_lock);
return count;
}
long val = simple_strtoul(buf, NULL, 10);
int oldcrithyst;
- mutex_lock(&data->update_lock);
+ down(&data->update_lock);
oldcrithyst = data->temp_crit - data->temp_hyst;
data->temp_crit = val;
data->temp_hyst = data->temp_crit - oldcrithyst;
LM77_TEMP_TO_REG(data->temp_crit));
lm77_write_value(client, LM77_REG_TEMP_HYST,
LM77_TEMP_TO_REG(data->temp_hyst));
- mutex_unlock(&data->update_lock);
+ up(&data->update_lock);
return count;
}
/* Fill in the remaining client fields and put it into the global list */
strlcpy(new_client->name, name, I2C_NAME_SIZE);
data->valid = 0;
- mutex_init(&data->update_lock);
+ init_MUTEX(&data->update_lock);
/* Tell the I2C layer a new client has arrived */
if ((err = i2c_attach_client(new_client)))
struct i2c_client *client = to_i2c_client(dev);
struct lm77_data *data = i2c_get_clientdata(client);
- mutex_lock(&data->update_lock);
+ down(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|| !data->valid) {
data->valid = 1;
}
- mutex_unlock(&data->update_lock);
+ up(&data->update_lock);
return data;
}