[PATCH] hwmon: Semaphore to mutex conversions

[safe/jmp/linux-2.6] / drivers / hwmon / lm80.c

diff --git a/drivers/hwmon/lm80.c b/drivers/hwmon/lm80.c
index c9a7cde..f72120d 100644 (file)
--- a/drivers/hwmon/lm80.c
+++ b/drivers/hwmon/lm80.c
@@ -28,6 +28,7 @@
 #include <linux/i2c.h>
 #include <linux/hwmon.h>
 #include <linux/err.h>
+#include <linux/mutex.h>
 
 /* Addresses to scan */
 static unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c,
@@ -108,7 +109,7 @@ static inline long TEMP_FROM_REG(u16 temp)
 struct lm80_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 */
 
@@ -191,10 +192,10 @@ static ssize_t set_in_##suffix(struct device *dev, struct device_attribute *attr
        struct lm80_data *data = i2c_get_clientdata(client); \
        long val = simple_strtol(buf, NULL, 10); \
  \
-       down(&data->update_lock);\
+       mutex_lock(&data->update_lock);\
        data->value = IN_TO_REG(val); \
        lm80_write_value(client, reg, data->value); \
-       up(&data->update_lock);\
+       mutex_unlock(&data->update_lock);\
        return count; \
 }
 set_in(min0, in_min[0], LM80_REG_IN_MIN(0));
@@ -241,10 +242,10 @@ static ssize_t set_fan_##suffix(struct device *dev, struct device_attribute *att
        struct lm80_data *data = i2c_get_clientdata(client); \
        long val = simple_strtoul(buf, NULL, 10); \
  \
-       down(&data->update_lock);\
+       mutex_lock(&data->update_lock);\
        data->value = FAN_TO_REG(val, DIV_FROM_REG(data->div)); \
        lm80_write_value(client, reg, data->value); \
-       up(&data->update_lock);\
+       mutex_unlock(&data->update_lock);\
        return count; \
 }
 set_fan(min1, fan_min[0], LM80_REG_FAN_MIN(1), fan_div[0]);
@@ -263,7 +264,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf,
        u8 reg;
 
        /* Save fan_min */
-       down(&data->update_lock);
+       mutex_lock(&data->update_lock);
        min = FAN_FROM_REG(data->fan_min[nr],
                           DIV_FROM_REG(data->fan_div[nr]));
 
@@ -275,7 +276,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf,
        default:
                dev_err(&client->dev, "fan_div value %ld not "
                        "supported. Choose one of 1, 2, 4 or 8!\n", val);
-               up(&data->update_lock);
+               mutex_unlock(&data->update_lock);
                return -EINVAL;
        }
 
@@ -286,7 +287,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf,
        /* Restore fan_min */
        data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
        lm80_write_value(client, LM80_REG_FAN_MIN(nr + 1), data->fan_min[nr]);
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
 
        return count;
 }
@@ -325,10 +326,10 @@ static ssize_t set_temp_##suffix(struct device *dev, struct device_attribute *at
        struct lm80_data *data = i2c_get_clientdata(client); \
        long val = simple_strtoul(buf, NULL, 10); \
  \
-       down(&data->update_lock); \
+       mutex_lock(&data->update_lock); \
        data->value = TEMP_LIMIT_TO_REG(val); \
        lm80_write_value(client, reg, data->value); \
-       up(&data->update_lock); \
+       mutex_unlock(&data->update_lock); \
        return count; \
 }
 set_temp(hot_max, temp_hot_max, LM80_REG_TEMP_HOT_MAX);
@@ -437,7 +438,7 @@ static int lm80_detect(struct i2c_adapter *adapter, int address, int kind)
        /* Fill in the remaining client fields and put it into the global list */
        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)))
@@ -545,7 +546,7 @@ static struct lm80_data *lm80_update_device(struct device *dev)
        struct lm80_data *data = i2c_get_clientdata(client);
        int i;
 
-       down(&data->update_lock);
+       mutex_lock(&data->update_lock);
 
        if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
                dev_dbg(&client->dev, "Starting lm80 update\n");
@@ -585,7 +586,7 @@ static struct lm80_data *lm80_update_device(struct device *dev)
                data->valid = 1;
        }
 
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
 
        return data;
 }