diff options
Diffstat (limited to 'drivers/hwmon/ds1621.c')
| -rw-r--r-- | drivers/hwmon/ds1621.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/hwmon/ds1621.c b/drivers/hwmon/ds1621.c index 5360d58..9ed21ac 100644 --- a/drivers/hwmon/ds1621.c +++ b/drivers/hwmon/ds1621.c @@ -27,6 +27,8 @@ #include <linux/jiffies.h> #include <linux/i2c.h> #include <linux/i2c-sensor.h> +#include <linux/hwmon.h> +#include <linux/err.h> #include "lm75.h" /* Addresses to scan */ @@ -71,6 +73,7 @@ MODULE_PARM_DESC(polarity, "Output's polarity: 0 = active high, 1 = active low") /* Each client has this additional data */ struct ds1621_data { struct i2c_client client; + struct class_device *class_dev; struct semaphore update_lock; char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ @@ -250,6 +253,12 @@ int ds1621_detect(struct i2c_adapter *adapter, int address, ds1621_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_alarms); device_create_file(&new_client->dev, &dev_attr_temp1_input); device_create_file(&new_client->dev, &dev_attr_temp1_min); @@ -259,6 +268,8 @@ int ds1621_detect(struct i2c_adapter *adapter, int address, /* OK, this is not exactly good programming practice, usually. But it is very code-efficient in this case. */ + exit_detach: + i2c_detach_client(new_client); exit_free: kfree(data); exit: @@ -267,15 +278,18 @@ int ds1621_detect(struct i2c_adapter *adapter, int address, static int ds1621_detach_client(struct i2c_client *client) { + struct ds1621_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; } |