[PATCH] hwmon: Semaphore to mutex conversions

[safe/jmp/linux-2.6] / drivers / hwmon / lm83.c

diff --git a/drivers/hwmon/lm83.c b/drivers/hwmon/lm83.c
index 26dfa9e..aac4ec2 100644 (file)
--- a/drivers/hwmon/lm83.c
+++ b/drivers/hwmon/lm83.c
@@ -35,6 +35,7 @@
 #include <linux/hwmon-sysfs.h>
 #include <linux/hwmon.h>
 #include <linux/err.h>
+#include <linux/mutex.h>
 
 /*
  * Addresses to scan
@@ -139,7 +140,7 @@ static struct i2c_driver lm83_driver = {
 struct lm83_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 */
 
@@ -171,11 +172,11 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *devattr,
        long val = simple_strtol(buf, NULL, 10);
        int nr = attr->index;
 
-       down(&data->update_lock);
+       mutex_lock(&data->update_lock);
        data->temp[nr] = TEMP_TO_REG(val);
        i2c_smbus_write_byte_data(client, LM83_REG_W_HIGH[nr - 4],
                                  data->temp[nr]);
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
        return count;
 }
 
@@ -300,7 +301,7 @@ static int lm83_detect(struct i2c_adapter *adapter, int address, int kind)
        /* We can fill in the remaining client fields */
        strlcpy(new_client->name, name, I2C_NAME_SIZE);
        data->valid = 0;
-       init_MUTEX(&data->update_lock);
+       mutex_init(&data->update_lock);
 
        /* Tell the I2C layer a new client has arrived */
        if ((err = i2c_attach_client(new_client)))
@@ -373,7 +374,7 @@ static struct lm83_data *lm83_update_device(struct device *dev)
        struct i2c_client *client = to_i2c_client(dev);
        struct lm83_data *data = i2c_get_clientdata(client);
 
-       down(&data->update_lock);
+       mutex_lock(&data->update_lock);
 
        if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
                int nr;
@@ -393,7 +394,7 @@ static struct lm83_data *lm83_update_device(struct device *dev)
                data->valid = 1;
        }
 
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
 
        return data;
 }