[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/lm90.c b/drivers/hwmon/lm90.c
index a67dcad..c1e8d0e 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -77,6 +77,8 @@
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
#include <linux/hwmon-sysfs.h>
+#include <linux/hwmon.h>
+#include <linux/err.h>
/*
* Addresses to scan
@@ -200,6 +202,7 @@
struct lm90_data {
struct i2c_client client;
+ struct class_device *class_dev;
struct semaphore update_lock;
char valid; /* zero until following fields are valid */
unsigned long last_updated; /* in jiffies */
@@ -500,6 +503,12 @@
lm90_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,
&sensor_dev_attr_temp1_input.dev_attr);
device_create_file(&new_client->dev,
@@ -524,6 +533,8 @@
return 0;
+exit_detach:
+ i2c_detach_client(new_client);
exit_free:
kfree(data);
exit:
@@ -547,15 +558,18 @@
static int lm90_detach_client(struct i2c_client *client)
{
+ struct lm90_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;
}
- kfree(i2c_get_clientdata(client));
+ kfree(data);
return 0;
}