#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 semaphore update_lock;
+ struct mutex 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;
- init_MUTEX(&data->update_lock);
+ mutex_init(&data->update_lock);
/* Default values in case the first read fails (unlikely). */
data->temp[1] = data->temp[0] = 0;
* Nothing yet, assume it is already started.
*/
+ err = device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp1_input.dev_attr);
+ if (err)
+ goto exit_remove;
+
+ err = device_create_file(&new_client->dev,
+ &sensor_dev_attr_temp1_max.dev_attr);
+ if (err)
+ goto exit_remove;
+
/* Register sysfs hooks */
data->class_dev = hwmon_device_register(&new_client->dev);
if (IS_ERR(data->class_dev)) {
err = PTR_ERR(data->class_dev);
- goto exit_detach;
+ goto exit_remove;
}
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp1_input.dev_attr);
- device_create_file(&new_client->dev,
- &sensor_dev_attr_temp1_max.dev_attr);
-
return 0;
-exit_detach:
+exit_remove:
+ device_remove_file(&new_client->dev,
+ &sensor_dev_attr_temp1_input.dev_attr);
+ device_remove_file(&new_client->dev,
+ &sensor_dev_attr_temp1_max.dev_attr);
i2c_detach_client(new_client);
exit_free:
kfree(data);
int err;
hwmon_device_unregister(data->class_dev);
-
+ device_remove_file(&client->dev,
+ &sensor_dev_attr_temp1_input.dev_attr);
+ device_remove_file(&client->dev,
+ &sensor_dev_attr_temp1_max.dev_attr);
if ((err = i2c_detach_client(client)))
return err;
struct i2c_client *client = to_i2c_client(dev);
struct w83l785ts_data *data = i2c_get_clientdata(client);
- down(&data->update_lock);
+ mutex_lock(&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;
}
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return data;
}