#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
-#include <linux/mutex.h>
/* How many retries on register read error */
#define MAX_RETRIES 5
struct w83l785ts_data {
struct i2c_client client;
struct class_device *class_dev;
- struct mutex update_lock;
+ struct semaphore update_lock;
char valid; /* zero until following fields are valid */
unsigned long last_updated; /* in jiffies */
/* We can fill in the remaining client fields. */
strlcpy(new_client->name, "w83l785ts", I2C_NAME_SIZE);
data->valid = 0;
- mutex_init(&data->update_lock);
+ init_MUTEX(&data->update_lock);
/* Default values in case the first read fails (unlikely). */
data->temp[1] = data->temp[0] = 0;
struct i2c_client *client = to_i2c_client(dev);
struct w83l785ts_data *data = i2c_get_clientdata(client);
- mutex_lock(&data->update_lock);
+ down(&data->update_lock);
if (!data->valid || time_after(jiffies, data->last_updated + HZ * 2)) {
dev_dbg(&client->dev, "Updating w83l785ts data.\n");
data->valid = 1;
}
- mutex_unlock(&data->update_lock);
+ up(&data->update_lock);
return data;
}