hwmon/smsc47m192: Semaphore to mutex conversion

Signed-off-by: Jean Delvare <khali@linux-fr.org>

diff --git a/drivers/hwmon/smsc47m192.c b/drivers/hwmon/smsc47m192.c
index a012f396f354d146a65a9128855e63f1aa6d0751..7c5cfa24d0c4359dbebb62c3f2962d36a77c577f 100644 (file)
--- a/drivers/hwmon/smsc47m192.c
+++ b/drivers/hwmon/smsc47m192.c
@@ -31,6 +31,7 @@
 #include <linux/hwmon-vid.h>
 #include <linux/err.h>
 #include <linux/sysfs.h>
+#include <linux/mutex.h>
 
 /* Addresses to scan */
 static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
@@ -97,7 +98,7 @@ static inline int TEMP_FROM_REG(s8 val)
 struct smsc47m192_data {
        struct i2c_client client;
        struct class_device *class_dev;
-       struct semaphore update_lock;
+       struct mutex update_lock;
        char valid;             /* !=0 if following fields are valid */
        unsigned long last_updated;     /* In jiffies */
 
@@ -164,11 +165,11 @@ static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
        struct smsc47m192_data *data = i2c_get_clientdata(client);
        unsigned long val = simple_strtoul(buf, NULL, 10);
 
-       down(&data->update_lock);
+       mutex_lock(&data->update_lock);
        data->in_min[nr] = IN_TO_REG(val, nr);
        i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MIN(nr),
                                                        data->in_min[nr]);
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
        return count;
 }
 
@@ -181,11 +182,11 @@ static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
        struct smsc47m192_data *data = i2c_get_clientdata(client);
        unsigned long val = simple_strtoul(buf, NULL, 10);
 
-       down(&data->update_lock);
+       mutex_lock(&data->update_lock);
        data->in_max[nr] = IN_TO_REG(val, nr);
        i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MAX(nr),
                                                        data->in_max[nr]);
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
        return count;
 }
 
@@ -243,11 +244,11 @@ static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
        struct smsc47m192_data *data = i2c_get_clientdata(client);
        long val = simple_strtol(buf, NULL, 10);
 
-       down(&data->update_lock);
+       mutex_lock(&data->update_lock);
        data->temp_min[nr] = TEMP_TO_REG(val);
        i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MIN[nr],
                                                data->temp_min[nr]);
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
        return count;
 }
 
@@ -260,11 +261,11 @@ static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
        struct smsc47m192_data *data = i2c_get_clientdata(client);
        long val = simple_strtol(buf, NULL, 10);
 
-       down(&data->update_lock);
+       mutex_lock(&data->update_lock);
        data->temp_max[nr] = TEMP_TO_REG(val);
        i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MAX[nr],
                                                data->temp_max[nr]);
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
        return count;
 }
 
@@ -287,7 +288,7 @@ static ssize_t set_temp_offset(struct device *dev, struct device_attribute
        u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR);
        long val = simple_strtol(buf, NULL, 10);
 
-       down(&data->update_lock);
+       mutex_lock(&data->update_lock);
        data->temp_offset[nr] = TEMP_TO_REG(val);
        if (nr>1)
                i2c_smbus_write_byte_data(client,
@@ -303,7 +304,7 @@ static ssize_t set_temp_offset(struct device *dev, struct device_attribute
        } else if ((sfr & 0x10) == (nr==0 ? 0x10 : 0))
                i2c_smbus_write_byte_data(client,
                                        SMSC47M192_REG_TEMP_OFFSET(nr), 0);
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
        return count;
 }
 
@@ -531,7 +532,7 @@ static int smsc47m192_detect(struct i2c_adapter *adapter, int address,
        /* Fill in the remaining client fields and put into the global list */
        strlcpy(client->name, "smsc47m192", I2C_NAME_SIZE);
        data->vrm = vid_which_vrm();
-       init_MUTEX(&data->update_lock);
+       mutex_init(&data->update_lock);
 
        /* Tell the I2C layer a new client has arrived */
        if ((err = i2c_attach_client(client)))
@@ -594,7 +595,7 @@ static struct smsc47m192_data *smsc47m192_update_device(struct device *dev)
        struct smsc47m192_data *data = i2c_get_clientdata(client);
        int i, config;
 
-       down(&data->update_lock);
+       mutex_lock(&data->update_lock);
 
        if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
         || !data->valid) {
@@ -645,7 +646,7 @@ static struct smsc47m192_data *smsc47m192_update_device(struct device *dev)
                data->valid = 1;
        }
 
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
 
        return data;
 }