#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
-#include <linux/mutex.h>
+#include <asm/semaphore.h>
/* Do not scan - the MAX6875 access method will write to some EEPROM chips */
static unsigned short normal_i2c[] = {I2C_CLIENT_END};
/* Each client has this additional data */
struct max6875_data {
struct i2c_client client;
- struct mutex update_lock;
+ struct semaphore update_lock;
u32 valid;
u8 data[USER_EEPROM_SIZE];
if (slice >= USER_EEPROM_SLICES)
return;
- mutex_lock(&data->update_lock);
+ down(&data->update_lock);
buf = &data->data[slice << SLICE_BITS];
data->valid |= (1 << slice);
}
exit_up:
- mutex_unlock(&data->update_lock);
+ up(&data->update_lock);
}
static ssize_t max6875_read(struct kobject *kobj, char *buf, loff_t off,
real_client->driver = &max6875_driver;
real_client->flags = 0;
strlcpy(real_client->name, "max6875", I2C_NAME_SIZE);
- mutex_init(&data->update_lock);
+ init_MUTEX(&data->update_lock);
/* Init fake client data */
/* set the client data to the i2c_client so that it will get freed */