#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
*/
static struct i2c_driver w83l785ts_driver = {
- .owner = THIS_MODULE,
- .name = "w83l785ts",
+ .driver = {
+ .name = "w83l785ts",
+ },
.id = I2C_DRIVERID_W83L785TS,
- .flags = I2C_DF_NOTIFY,
.attach_adapter = w83l785ts_attach_adapter,
.detach_client = w83l785ts_detach_client,
};
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 */
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
goto exit;
- if (!(data = kmalloc(sizeof(struct w83l785ts_data), GFP_KERNEL))) {
+ if (!(data = kzalloc(sizeof(struct w83l785ts_data), GFP_KERNEL))) {
err = -ENOMEM;
goto exit;
}
- memset(data, 0, sizeof(struct w83l785ts_data));
-
/* The common I2C client data is placed right before the
* W83L785TS-specific data. */
/* 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;
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;
}