#include <linux/i2c.h>
#include <linux/hwmon.h>
#include <linux/err.h>
-#include <linux/mutex.h>
/* The LM92 and MAX6635 have 2 two-state pins for address selection,
resulting in 4 possible addresses. */
struct lm92_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 */
struct i2c_client *client = to_i2c_client(dev);
struct lm92_data *data = i2c_get_clientdata(client);
- mutex_lock(&data->update_lock);
+ down(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ)
|| !data->valid) {
data->valid = 1;
}
- mutex_unlock(&data->update_lock);
+ up(&data->update_lock);
return data;
}
struct lm92_data *data = i2c_get_clientdata(client); \
long val = simple_strtol(buf, NULL, 10); \
\
- mutex_lock(&data->update_lock); \
+ down(&data->update_lock); \
data->value = TEMP_TO_REG(val); \
i2c_smbus_write_word_data(client, reg, swab16(data->value)); \
- mutex_unlock(&data->update_lock); \
+ up(&data->update_lock); \
return count; \
}
set_temp(temp1_crit, LM92_REG_TEMP_CRIT);
struct lm92_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
- mutex_lock(&data->update_lock);
+ down(&data->update_lock);
data->temp1_hyst = TEMP_FROM_REG(data->temp1_crit) - val;
i2c_smbus_write_word_data(client, LM92_REG_TEMP_HYST,
swab16(TEMP_TO_REG(data->temp1_hyst)));
- mutex_unlock(&data->update_lock);
+ up(&data->update_lock);
return count;
}
/* Fill in the remaining client fields */
strlcpy(new_client->name, name, I2C_NAME_SIZE);
data->valid = 0;
- mutex_init(&data->update_lock);
+ init_MUTEX(&data->update_lock);
/* Tell the i2c subsystem a new client has arrived */
if ((err = i2c_attach_client(new_client)))