diff --git a/drivers/hwmon/w83781d.c b/drivers/hwmon/w83781d.c
index 64c1f8a..7821178 100644
--- a/drivers/hwmon/w83781d.c
+++ b/drivers/hwmon/w83781d.c
@@ -42,6 +42,7 @@
 #include <linux/hwmon.h>
 #include <linux/hwmon-vid.h>
 #include <linux/err.h>
+#include <linux/mutex.h>
 #include <asm/io.h>
 #include "lm75.h"
 
@@ -226,10 +227,10 @@
 struct w83781d_data {
 	struct i2c_client client;
 	struct class_device *class_dev;
-	struct semaphore lock;
+	struct mutex lock;
 	enum chips type;
 
-	struct semaphore update_lock;
+	struct mutex update_lock;
 	char valid;		/* !=0 if following fields are valid */
 	unsigned long last_updated;	/* In jiffies */
 
@@ -311,11 +312,11 @@
 	 \
 	val = simple_strtoul(buf, NULL, 10) / 10; \
 	 \
-	down(&data->update_lock); \
+	mutex_lock(&data->update_lock); \
 	data->in_##reg[nr] = IN_TO_REG(val); \
 	w83781d_write_value(client, W83781D_REG_IN_##REG(nr), data->in_##reg[nr]); \
 	 \
-	up(&data->update_lock); \
+	mutex_unlock(&data->update_lock); \
 	return count; \
 }
 store_in_reg(MIN, min);
@@ -381,13 +382,13 @@
 
 	val = simple_strtoul(buf, NULL, 10);
 
-	down(&data->update_lock);
+	mutex_lock(&data->update_lock);
 	data->fan_min[nr - 1] =
 	    FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr - 1]));
 	w83781d_write_value(client, W83781D_REG_FAN_MIN(nr),
 			    data->fan_min[nr - 1]);
 
-	up(&data->update_lock);
+	mutex_unlock(&data->update_lock);
 	return count;
 }
 
@@ -446,7 +447,7 @@
 	 \
 	val = simple_strtol(buf, NULL, 10); \
 	 \
-	down(&data->update_lock); \
+	mutex_lock(&data->update_lock); \
 	 \
 	if (nr >= 2) {	/* TEMP2 and TEMP3 */ \
 		data->temp_##reg##_add[nr-2] = LM75_TEMP_TO_REG(val); \
@@ -458,7 +459,7 @@
 			data->temp_##reg); \
 	} \
 	 \
-	up(&data->update_lock); \
+	mutex_unlock(&data->update_lock); \
 	return count; \
 }
 store_temp_reg(OVER, max);
@@ -571,7 +572,7 @@
 
 	val = simple_strtoul(buf, NULL, 10);
 
-	down(&data->update_lock);
+	mutex_lock(&data->update_lock);
 
 	if (update_mask == BEEP_MASK) {	/* We are storing beep_mask */
 		data->beep_mask = BEEP_MASK_TO_REG(val, data->type);
@@ -592,7 +593,7 @@
 	w83781d_write_value(client, W83781D_REG_BEEP_INTS2,
 			    val2 | data->beep_enable << 7);
 
-	up(&data->update_lock);
+	mutex_unlock(&data->update_lock);
 	return count;
 }
 
@@ -637,7 +638,7 @@
 	u8 reg;
 	unsigned long val = simple_strtoul(buf, NULL, 10);
 
-	down(&data->update_lock);
+	mutex_lock(&data->update_lock);
 	
 	/* Save fan_min */
 	min = FAN_FROM_REG(data->fan_min[nr],
@@ -662,7 +663,7 @@
 	data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 	w83781d_write_value(client, W83781D_REG_FAN_MIN(nr+1), data->fan_min[nr]);
 
-	up(&data->update_lock);
+	mutex_unlock(&data->update_lock);
 	return count;
 }
 
@@ -709,10 +710,10 @@
 
 	val = simple_strtoul(buf, NULL, 10);
 
-	down(&data->update_lock);
+	mutex_lock(&data->update_lock);
 	data->pwm[nr - 1] = PWM_TO_REG(val);
 	w83781d_write_value(client, W83781D_REG_PWM(nr), data->pwm[nr - 1]);
-	up(&data->update_lock);
+	mutex_unlock(&data->update_lock);
 	return count;
 }
 
@@ -725,7 +726,7 @@
 
 	val = simple_strtoul(buf, NULL, 10);
 
-	down(&data->update_lock);
+	mutex_lock(&data->update_lock);
 
 	switch (val) {
 	case 0:
@@ -742,11 +743,11 @@
 		break;
 
 	default:
-		up(&data->update_lock);
+		mutex_unlock(&data->update_lock);
 		return -EINVAL;
 	}
 
-	up(&data->update_lock);
+	mutex_unlock(&data->update_lock);
 	return count;
 }
 
@@ -808,7 +809,7 @@
 
 	val = simple_strtoul(buf, NULL, 10);
 
-	down(&data->update_lock);
+	mutex_lock(&data->update_lock);
 
 	switch (val) {
 	case 1:		/* PII/Celeron diode */
@@ -841,7 +842,7 @@
 		break;
 	}
 
-	up(&data->update_lock);
+	mutex_unlock(&data->update_lock);
 	return count;
 }
 
@@ -1073,7 +1074,7 @@
 	new_client = &data->client;
 	i2c_set_clientdata(new_client, data);
 	new_client->addr = address;
-	init_MUTEX(&data->lock);
+	mutex_init(&data->lock);
 	new_client->adapter = adapter;
 	new_client->driver = is_isa ? &w83781d_isa_driver : &w83781d_driver;
 	new_client->flags = 0;
@@ -1178,7 +1179,7 @@
 	data->type = kind;
 
 	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)))
@@ -1325,7 +1326,7 @@
 	int res, word_sized, bank;
 	struct i2c_client *cl;
 
-	down(&data->lock);
+	mutex_lock(&data->lock);
 	if (i2c_is_isa_client(client)) {
 		word_sized = (((reg & 0xff00) == 0x100)
 			      || ((reg & 0xff00) == 0x200))
@@ -1383,7 +1384,7 @@
 		if (bank > 2)
 			i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
 	}
-	up(&data->lock);
+	mutex_unlock(&data->lock);
 	return res;
 }
 
@@ -1394,7 +1395,7 @@
 	int word_sized, bank;
 	struct i2c_client *cl;
 
-	down(&data->lock);
+	mutex_lock(&data->lock);
 	if (i2c_is_isa_client(client)) {
 		word_sized = (((reg & 0xff00) == 0x100)
 			      || ((reg & 0xff00) == 0x200))
@@ -1447,7 +1448,7 @@
 		if (bank > 2)
 			i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
 	}
-	up(&data->lock);
+	mutex_unlock(&data->lock);
 	return 0;
 }
 
@@ -1533,7 +1534,7 @@
 	struct w83781d_data *data = i2c_get_clientdata(client);
 	int i;
 
-	down(&data->update_lock);
+	mutex_lock(&data->update_lock);
 
 	if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
 	    || !data->valid) {
@@ -1641,7 +1642,7 @@
 		data->valid = 1;
 	}
 
-	up(&data->update_lock);
+	mutex_unlock(&data->update_lock);
 
 	return data;
 }