From 943b0830cebe4711354945ed3cb44e84152aaca0 Mon Sep 17 00:00:00 2001
From: "Mark M. Hoffman" <mhoffman@lightlink.com>
Date: Fri, 15 Jul 2005 21:39:18 -0400
Subject: [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>
---
 drivers/hwmon/asb100.c | 31 +++++++++++++++++++++++++------
 1 file changed, 25 insertions(+), 6 deletions(-)

(limited to 'drivers/hwmon/asb100.c')

diff --git a/drivers/hwmon/asb100.c b/drivers/hwmon/asb100.c
index 70d996d6fe0..3ab7a2ddafb 100644
--- a/drivers/hwmon/asb100.c
+++ b/drivers/hwmon/asb100.c
@@ -41,6 +41,8 @@
 #include <linux/i2c.h>
 #include <linux/i2c-sensor.h>
 #include <linux/i2c-vid.h>
+#include <linux/hwmon.h>
+#include <linux/err.h>
 #include <linux/init.h>
 #include <linux/jiffies.h>
 #include "lm75.h"
@@ -183,6 +185,7 @@ static u8 DIV_TO_REG(long val)
    dynamically allocated, at the same time the client itself is allocated. */
 struct asb100_data {
 	struct i2c_client client;
+	struct class_device *class_dev;
 	struct semaphore lock;
 	enum chips type;
 
@@ -821,6 +824,12 @@ static int asb100_detect(struct i2c_adapter *adapter, int address, int kind)
 	data->fan_min[2] = asb100_read_value(new_client, ASB100_REG_FAN_MIN(2));
 
 	/* 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);
 	device_create_file_in(new_client, 1);
 	device_create_file_in(new_client, 2);
@@ -847,6 +856,11 @@ static int asb100_detect(struct i2c_adapter *adapter, int address, int kind)
 
 	return 0;
 
+ERROR3:
+	i2c_detach_client(data->lm75[1]);
+	i2c_detach_client(data->lm75[0]);
+	kfree(data->lm75[1]);
+	kfree(data->lm75[0]);
 ERROR2:
 	i2c_detach_client(new_client);
 ERROR1:
@@ -857,21 +871,26 @@ ERROR0:
 
 static int asb100_detach_client(struct i2c_client *client)
 {
+	struct asb100_data *data = i2c_get_clientdata(client);
 	int err;
 
+	/* main client */
+	if (data)
+		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;
 	}
 
-	if (i2c_get_clientdata(client)==NULL) {
-		/* subclients */
+	/* main client */
+	if (data)
+		kfree(data);
+
+	/* subclient */
+	else
 		kfree(client);
-	} else {
-		/* main client */
-		kfree(i2c_get_clientdata(client));
-	}
 
 	return 0;
 }
-- 
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