[PATCH] hwmon: Semaphore to mutex conversions

[safe/jmp/linux-2.6] / drivers / hwmon / lm92.c

diff --git a/drivers/hwmon/lm92.c b/drivers/hwmon/lm92.c
index b0c4cb7..197f772 100644 (file)
--- a/drivers/hwmon/lm92.c
+++ b/drivers/hwmon/lm92.c
@@ -46,6 +46,7 @@
 #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. */
@@ -96,7 +97,7 @@ static struct i2c_driver lm92_driver;
 struct lm92_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 */
 
@@ -114,7 +115,7 @@ static struct lm92_data *lm92_update_device(struct device *dev)
        struct i2c_client *client = to_i2c_client(dev);
        struct lm92_data *data = i2c_get_clientdata(client);
 
-       down(&data->update_lock);
+       mutex_lock(&data->update_lock);
 
        if (time_after(jiffies, data->last_updated + HZ)
         || !data->valid) {
@@ -134,7 +135,7 @@ static struct lm92_data *lm92_update_device(struct device *dev)
                data->valid = 1;
        }
 
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
 
        return data;
 }
@@ -158,10 +159,10 @@ static ssize_t set_##value(struct device *dev, struct device_attribute *attr, co
        struct lm92_data *data = i2c_get_clientdata(client); \
        long val = simple_strtol(buf, NULL, 10); \
  \
-       down(&data->update_lock); \
+       mutex_lock(&data->update_lock); \
        data->value = TEMP_TO_REG(val); \
        i2c_smbus_write_word_data(client, reg, swab16(data->value)); \
-       up(&data->update_lock); \
+       mutex_unlock(&data->update_lock); \
        return count; \
 }
 set_temp(temp1_crit, LM92_REG_TEMP_CRIT);
@@ -194,11 +195,11 @@ static ssize_t set_temp1_crit_hyst(struct device *dev, struct device_attribute *
        struct lm92_data *data = i2c_get_clientdata(client);
        long val = simple_strtol(buf, NULL, 10);
 
-       down(&data->update_lock);
+       mutex_lock(&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)));
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
        return count;
 }
 
@@ -348,7 +349,7 @@ static int lm92_detect(struct i2c_adapter *adapter, int address, int kind)
        /* 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 subsystem a new client has arrived */
        if ((err = i2c_attach_client(new_client)))