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path: root/drivers/hwmon/lm87.c
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Diffstat (limited to 'drivers/hwmon/lm87.c')
-rw-r--r--drivers/hwmon/lm87.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/hwmon/lm87.c b/drivers/hwmon/lm87.c
index 1921ed1af182..7e14858c257b 100644
--- a/drivers/hwmon/lm87.c
+++ b/drivers/hwmon/lm87.c
@@ -59,6 +59,8 @@
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
#include <linux/i2c-vid.h>
+#include <linux/hwmon.h>
+#include <linux/err.h>
/*
* Addresses to scan
@@ -175,6 +177,7 @@ static struct i2c_driver lm87_driver = {
struct lm87_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 */
@@ -608,6 +611,12 @@ static int lm87_detect(struct i2c_adapter *adapter, int address, int kind)
data->in_scale[7] = 1875;
/* 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_in1_input);
device_create_file(&new_client->dev, &dev_attr_in1_min);
device_create_file(&new_client->dev, &dev_attr_in1_max);
@@ -673,6 +682,8 @@ static int lm87_detect(struct i2c_adapter *adapter, int address, int kind)
return 0;
+exit_detach:
+ i2c_detach_client(new_client);
exit_free:
kfree(data);
exit:
@@ -719,15 +730,18 @@ static void lm87_init_client(struct i2c_client *client)
static int lm87_detach_client(struct i2c_client *client)
{
+ struct lm87_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;
}