[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/adm1031.c b/drivers/hwmon/adm1031.c
index 936250957270..ac3b1542556e 100644
--- a/drivers/hwmon/adm1031.c
+++ b/drivers/hwmon/adm1031.c
@@ -27,6 +27,8 @@
 #include <linux/jiffies.h>
 #include <linux/i2c.h>
 #include <linux/i2c-sensor.h>
+#include <linux/hwmon.h>
+#include <linux/err.h>
 
 /* Following macros takes channel parameter starting from 0 to 2 */
 #define ADM1031_REG_FAN_SPEED(nr)       (0x08 + (nr))
@@ -69,6 +71,7 @@ typedef u8 auto_chan_table_t[8][2];
 /* Each client has this additional data */
 struct adm1031_data {
         struct i2c_client client;
+        struct class_device *class_dev;
         struct semaphore update_lock;
         int chip_type;
         char valid;             /* !=0 if following fields are valid */
@@ -788,6 +791,12 @@ static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind)
         adm1031_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_fan1_input);
         device_create_file(&new_client->dev, &dev_attr_fan1_div);
         device_create_file(&new_client->dev, &dev_attr_fan1_min);
@@ -833,6 +842,8 @@ static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind)
 
         return 0;
 
+exit_detach:
+        i2c_detach_client(new_client);
 exit_free:
         kfree(data);
 exit:
@@ -841,11 +852,14 @@ exit:
 
 static int adm1031_detach_client(struct i2c_client *client)
 {
+        struct adm1031_data *data = i2c_get_clientdata(client);
         int ret;
+
+        hwmon_device_unregister(data->class_dev);
         if ((ret = i2c_detach_client(client)) != 0) {
                 return ret;
         }
-        kfree(i2c_get_clientdata(client));
+        kfree(data);
         return 0;
 }