[PATCH] autofs4: fix false negative return from expire

[linux-2.6-omap-h63xx.git] / drivers / hwmon / lm90.c

diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 5679464447cc0140bbeddf6ac07897301cc1f22d..d9eeaf7585bd3be3d171ba2d8f33a3b9393564e3 100644 (file)
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -78,6 +78,7 @@
 #include <linux/hwmon-sysfs.h>
 #include <linux/hwmon.h>
 #include <linux/err.h>
+#include <linux/mutex.h>
 
 /*
  * Addresses to scan
@@ -201,7 +202,7 @@ static struct i2c_driver lm90_driver = {
 struct lm90_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 */
        int kind;
@@ -247,13 +248,13 @@ static ssize_t set_temp8(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);
        if (data->kind == adt7461)
                data->temp8[nr] = TEMP1_TO_REG_ADT7461(val);
        else
                data->temp8[nr] = TEMP1_TO_REG(val);
        i2c_smbus_write_byte_data(client, reg[nr - 1], data->temp8[nr]);
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
        return count;
 }
 
@@ -281,7 +282,7 @@ static ssize_t set_temp11(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);
        if (data->kind == adt7461)
                data->temp11[nr] = TEMP2_TO_REG_ADT7461(val);
        else
@@ -290,7 +291,7 @@ static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
                                  data->temp11[nr] >> 8);
        i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1],
                                  data->temp11[nr] & 0xff);
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
        return count;
 }
 
@@ -311,11 +312,11 @@ static ssize_t set_temphyst(struct device *dev, struct device_attribute *dummy,
        long val = simple_strtol(buf, NULL, 10);
        long hyst;
 
-       down(&data->update_lock);
+       mutex_lock(&data->update_lock);
        hyst = TEMP1_FROM_REG(data->temp8[3]) - val;
        i2c_smbus_write_byte_data(client, LM90_REG_W_TCRIT_HYST,
                                  HYST_TO_REG(hyst));
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
        return count;
 }
 
@@ -558,7 +559,7 @@ static int lm90_detect(struct i2c_adapter *adapter, int address, int kind)
        strlcpy(new_client->name, name, I2C_NAME_SIZE);
        data->valid = 0;
        data->kind = kind;
-       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)))
@@ -646,7 +647,7 @@ static struct lm90_data *lm90_update_device(struct device *dev)
        struct i2c_client *client = to_i2c_client(dev);
        struct lm90_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) {
                u8 oldh, newh, l;
@@ -692,7 +693,7 @@ static struct lm90_data *lm90_update_device(struct device *dev)
                data->valid = 1;
        }
 
-       up(&data->update_lock);
+       mutex_unlock(&data->update_lock);
 
        return data;
 }