[PATCH] I2C hwmon: add hwmon sysfs class to drivers

This patch modifies sensors chip drivers to make use of the new
sysfs class "hwmon".

Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 15 insertions, 1 deletions

diff --git a/drivers/hwmon/w83627hf.c b/drivers/hwmon/w83627hf.c
index bd87a42e068a..da2f4992ee21 100644
--- a/drivers/hwmon/w83627hf.c
+++ b/drivers/hwmon/w83627hf.c
@@ -44,6 +44,8 @@
 #include <linux/i2c.h>
 #include <linux/i2c-sensor.h>
 #include <linux/i2c-vid.h>
+#include <linux/hwmon.h>
+#include <linux/err.h>
 #include <asm/io.h>
 #include "lm75.h"
 
@@ -277,6 +279,7 @@ static inline u8 DIV_TO_REG(long val)
    dynamically allocated, at the same time when a new client is allocated. */
 struct w83627hf_data {
         struct i2c_client client;
+        struct class_device *class_dev;
         struct semaphore lock;
         enum chips type;
 
@@ -1102,6 +1105,12 @@ int w83627hf_detect(struct i2c_adapter *adapter, int address,
         data->fan_min[2] = w83627hf_read_value(new_client, W83781D_REG_FAN_MIN(3));
 
         /* 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 ERROR3;
+        }
+
         device_create_file_in(new_client, 0);
         if (kind != w83697hf)
                 device_create_file_in(new_client, 1);
@@ -1152,6 +1161,8 @@ int w83627hf_detect(struct i2c_adapter *adapter, int address,
 
         return 0;
 
+      ERROR3:
+        i2c_detach_client(new_client);
       ERROR2:
         kfree(data);
       ERROR1:
@@ -1162,8 +1173,11 @@ int w83627hf_detect(struct i2c_adapter *adapter, int address,
 
 static int w83627hf_detach_client(struct i2c_client *client)
 {
+        struct w83627hf_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");
@@ -1171,7 +1185,7 @@ static int w83627hf_detach_client(struct i2c_client *client)
         }
 
         release_region(client->addr, WINB_EXTENT);
-        kfree(i2c_get_clientdata(client));
+        kfree(data);
 
         return 0;
 }