hwmon: (adt7470) No need for additional synchronization on kthread_stop()

The kthread_stop() waits for the thread to exit. There is no need for an
additional synchronization needed to join on the kthread.

The completion was added by 89fac11cb3e7 ("adt7470: make automatic fan
control really work").

Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Cc: Darrick J. Wong <djwong@us.ibm.com>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c
index ffe1edc..6e60ca5 100644 (file)
--- a/drivers/hwmon/adt7470.c
+++ b/drivers/hwmon/adt7470.c
@@ -177,7 +177,6 @@ struct adt7470_data {
        u8                      pwm_auto_temp[ADT7470_PWM_COUNT];
 
        struct task_struct      *auto_update;
-       struct completion       auto_update_stop;
        unsigned int            auto_update_interval;
 };
 
@@ -281,7 +280,6 @@ static int adt7470_update_thread(void *p)
                schedule_timeout(msecs_to_jiffies(data->auto_update_interval));
        }
 
-       complete_all(&data->auto_update_stop);
        return 0;
 }
 
@@ -1356,7 +1354,6 @@ static int adt7470_probe(struct i2c_client *client,
        if (IS_ERR(hwmon_dev))
                return PTR_ERR(hwmon_dev);
 
-       init_completion(&data->auto_update_stop);
        data->auto_update = kthread_run(adt7470_update_thread, client, "%s",
                                        dev_name(hwmon_dev));
        if (IS_ERR(data->auto_update)) {
@@ -1371,7 +1368,6 @@ static int adt7470_remove(struct i2c_client *client)
        struct adt7470_data *data = i2c_get_clientdata(client);
 
        kthread_stop(data->auto_update);
-       wait_for_completion(&data->auto_update_stop);
        return 0;
 }