[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>
diff --git a/drivers/hwmon/lm78.c b/drivers/hwmon/lm78.c
index cf7a2a7f..570098e 100644
--- a/drivers/hwmon/lm78.c
+++ b/drivers/hwmon/lm78.c
@@ -24,6 +24,8 @@
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
+#include <linux/hwmon.h>
+#include <linux/err.h>
#include <asm/io.h>
/* Addresses to scan */
@@ -134,6 +136,7 @@
allocated. */
struct lm78_data {
struct i2c_client client;
+ struct class_device *class_dev;
struct semaphore lock;
enum chips type;
@@ -602,6 +605,12 @@
}
/* 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(&new_client->dev, &dev_attr_in0_input);
device_create_file(&new_client->dev, &dev_attr_in0_min);
device_create_file(&new_client->dev, &dev_attr_in0_max);
@@ -640,6 +649,8 @@
return 0;
+ERROR3:
+ i2c_detach_client(new_client);
ERROR2:
kfree(data);
ERROR1:
@@ -651,8 +662,11 @@
static int lm78_detach_client(struct i2c_client *client)
{
+ struct lm78_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");
@@ -662,7 +676,7 @@
if(i2c_is_isa_client(client))
release_region(client->addr, LM78_EXTENT);
- kfree(i2c_get_clientdata(client));
+ kfree(data);
return 0;
}
