[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/w83627ehf.c b/drivers/hwmon/w83627ehf.c
index 250f6b059a54..956e7f830aa6 100644
--- a/drivers/hwmon/w83627ehf.c
+++ b/drivers/hwmon/w83627ehf.c
@@ -41,6 +41,8 @@
 #include <linux/slab.h>
 #include <linux/i2c.h>
 #include <linux/i2c-sensor.h>
+#include <linux/hwmon.h>
+#include <linux/err.h>
 #include <asm/io.h>
 #include "lm75.h"
 
@@ -177,6 +179,7 @@ temp1_to_reg(int temp)
 
 struct w83627ehf_data {
         struct i2c_client client;
+        struct class_device *class_dev;
         struct semaphore lock;
 
         struct semaphore update_lock;
@@ -723,6 +726,12 @@ static int w83627ehf_detect(struct i2c_adapter *adapter, int address, int kind)
                 data->has_fan |= (1 << 4);
 
         /* Register sysfs hooks */
+        data->class_dev = hwmon_device_register(&client->dev);
+        if (IS_ERR(data->class_dev)) {
+                err = PTR_ERR(data->class_dev);
+                goto exit_detach;
+        }
+
         device_create_file(&client->dev, &dev_attr_fan1_input);
         device_create_file(&client->dev, &dev_attr_fan1_min);
         device_create_file(&client->dev, &dev_attr_fan1_div);
@@ -756,6 +765,8 @@ static int w83627ehf_detect(struct i2c_adapter *adapter, int address, int kind)
 
         return 0;
 
+exit_detach:
+        i2c_detach_client(client);
 exit_free:
         kfree(data);
 exit_release:
@@ -773,15 +784,18 @@ static int w83627ehf_attach_adapter(struct i2c_adapter *adapter)
 
 static int w83627ehf_detach_client(struct i2c_client *client)
 {
+        struct w83627ehf_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;
         }
         release_region(client->addr, REGION_LENGTH);
-        kfree(i2c_get_clientdata(client));
+        kfree(data);
 
         return 0;
 }