1 files changed, 15 insertions, 2 deletions

diff --git a/drivers/hwmon/max1619.c b/drivers/hwmon/max1619.c
index 3c159f1d49ee..56c34c2d3619 100644
--- a/drivers/hwmon/max1619.c
+++ b/drivers/hwmon/max1619.c
@@ -32,7 +32,8 @@
 #include <linux/jiffies.h>
 #include <linux/i2c.h>
 #include <linux/i2c-sensor.h>
-
+#include <linux/hwmon.h>
+#include <linux/err.h>
 
 static unsigned short normal_i2c[] = { 0x18, 0x19, 0x1a,
                                         0x29, 0x2a, 0x2b,
@@ -104,6 +105,7 @@ static struct i2c_driver max1619_driver = {
 
 struct max1619_data {
         struct i2c_client client;
+        struct class_device *class_dev;
         struct semaphore update_lock;
         char valid; /* zero until following fields are valid */
         unsigned long last_updated; /* in jiffies */
@@ -275,6 +277,12 @@ static int max1619_detect(struct i2c_adapter *adapter, int address, int kind)
         max1619_init_client(new_client);
 
         /* Register sysfs hooks */
+        data->class_dev = hwmon_device_register(&new_client->dev);
+        if (IS_ERR(data->class_dev)) {
+                err = PTR_ERR(data->class_dev);
+                goto exit_detach;
+        }
+
         device_create_file(&new_client->dev, &dev_attr_temp1_input);
         device_create_file(&new_client->dev, &dev_attr_temp2_input);
         device_create_file(&new_client->dev, &dev_attr_temp2_min);
@@ -285,6 +293,8 @@ static int max1619_detect(struct i2c_adapter *adapter, int address, int kind)
 
         return 0;
 
+exit_detach:
+        i2c_detach_client(new_client);
 exit_free:
         kfree(data);
 exit:
@@ -308,15 +318,18 @@ static void max1619_init_client(struct i2c_client *client)
 
 static int max1619_detach_client(struct i2c_client *client)
 {
+        struct max1619_data *data = i2c_get_clientdata(client);
         int err;
 
+        hwmon_device_unregister(data->class_dev);
+
         if ((err = i2c_detach_client(client))) {
                 dev_err(&client->dev, "Client deregistration failed, "
                         "client not detached.\n");
                 return err;
         }
 
-        kfree(i2c_get_clientdata(client));
+        kfree(data);
         return 0;
 }