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path: root/drivers/hwmon/smsc47m1.c
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Diffstat (limited to 'drivers/hwmon/smsc47m1.c')
-rw-r--r--drivers/hwmon/smsc47m1.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/hwmon/smsc47m1.c b/drivers/hwmon/smsc47m1.c
index 7166ad0b2fda..de7c7f804d66 100644
--- a/drivers/hwmon/smsc47m1.c
+++ b/drivers/hwmon/smsc47m1.c
@@ -31,6 +31,8 @@
#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>
@@ -108,6 +110,7 @@ superio_exit(void)
struct smsc47m1_data {
struct i2c_client client;
+ struct class_device *class_dev;
struct semaphore lock;
struct semaphore update_lock;
@@ -461,6 +464,13 @@ static int smsc47m1_detect(struct i2c_adapter *adapter, int address, int kind)
function. */
smsc47m1_update_device(&new_client->dev, 1);
+ /* 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 error_detach;
+ }
+
if (fan1) {
device_create_file(&new_client->dev, &dev_attr_fan1_input);
device_create_file(&new_client->dev, &dev_attr_fan1_min);
@@ -494,6 +504,8 @@ static int smsc47m1_detect(struct i2c_adapter *adapter, int address, int kind)
return 0;
+error_detach:
+ i2c_detach_client(new_client);
error_free:
kfree(data);
error_release:
@@ -503,8 +515,11 @@ error_release:
static int smsc47m1_detach_client(struct i2c_client *client)
{
+ struct smsc47m1_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");
@@ -512,7 +527,7 @@ static int smsc47m1_detach_client(struct i2c_client *client)
}
release_region(client->addr, SMSC_EXTENT);
- kfree(i2c_get_clientdata(client));
+ kfree(data);
return 0;
}