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path: root/drivers/hwmon/lm77.c
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Diffstat (limited to 'drivers/hwmon/lm77.c')
-rw-r--r--drivers/hwmon/lm77.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/hwmon/lm77.c b/drivers/hwmon/lm77.c
index b98f44952997..15f30fdc75c6 100644
--- a/drivers/hwmon/lm77.c
+++ b/drivers/hwmon/lm77.c
@@ -31,7 +31,8 @@
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
-
+#include <linux/hwmon.h>
+#include <linux/err.h>
/* Addresses to scan */
static unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b, I2C_CLIENT_END };
@@ -51,6 +52,7 @@ SENSORS_INSMOD_1(lm77);
/* Each client has this additional data */
struct lm77_data {
struct i2c_client client;
+ struct class_device *class_dev;
struct semaphore update_lock;
char valid;
unsigned long last_updated; /* In jiffies */
@@ -317,6 +319,12 @@ static int lm77_detect(struct i2c_adapter *adapter, int address, int kind)
lm77_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_temp1_input);
device_create_file(&new_client->dev, &dev_attr_temp1_crit);
device_create_file(&new_client->dev, &dev_attr_temp1_min);
@@ -327,6 +335,8 @@ static int lm77_detect(struct i2c_adapter *adapter, int address, int kind)
device_create_file(&new_client->dev, &dev_attr_alarms);
return 0;
+exit_detach:
+ i2c_detach_client(new_client);
exit_free:
kfree(data);
exit:
@@ -335,8 +345,10 @@ exit:
static int lm77_detach_client(struct i2c_client *client)
{
+ struct lm77_data *data = i2c_get_clientdata(client);
+ hwmon_device_unregister(data->class_dev);
i2c_detach_client(client);
- kfree(i2c_get_clientdata(client));
+ kfree(data);
return 0;
}