[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/smsc47b397.c b/drivers/hwmon/smsc47b397.c
index fdeeb3a..96b9eb4 100644
--- a/drivers/hwmon/smsc47b397.c
+++ b/drivers/hwmon/smsc47b397.c
@@ -32,6 +32,8 @@
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
+#include <linux/hwmon.h>
+#include <linux/err.h>
#include <linux/init.h>
#include <asm/io.h>
@@ -100,6 +102,7 @@
struct smsc47b397_data {
struct i2c_client client;
+ struct class_device *class_dev;
struct semaphore lock;
struct semaphore update_lock;
@@ -226,8 +229,11 @@
static int smsc47b397_detach_client(struct i2c_client *client)
{
+ struct smsc47b397_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");
@@ -235,7 +241,7 @@
}
release_region(client->addr, SMSC_EXTENT);
- kfree(i2c_get_clientdata(client));
+ kfree(data);
return 0;
}
@@ -285,6 +291,12 @@
if ((err = i2c_attach_client(new_client)))
goto error_free;
+ data->class_dev = hwmon_device_register(&new_client->dev);
+ if (IS_ERR(data->class_dev)) {
+ err = PTR_ERR(data->class_dev);
+ goto error_detach;
+ }
+
device_create_file_temp(new_client, 1);
device_create_file_temp(new_client, 2);
device_create_file_temp(new_client, 3);
@@ -297,6 +309,8 @@
return 0;
+error_detach:
+ i2c_detach_client(new_client);
error_free:
kfree(data);
error_release:
