From: Daniel Wagner <daniel.wag...@bmw-carit.de>

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

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

Signed-off-by: Daniel Wagner <daniel.wag...@bmw-carit.de>
Cc: Darrick J. Wong <djw...@us.ibm.com>
Cc: Jean Delvare <jdelv...@suse.com>
Cc: Guenter Roeck <li...@roeck-us.net>
Cc: linux-hwmon@vger.kernel.org
---
 drivers/hwmon/adt7470.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c
index f5da39a..f5d618c 100644
--- a/drivers/hwmon/adt7470.c
+++ b/drivers/hwmon/adt7470.c
@@ -170,7 +170,6 @@ 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;
 };
 
@@ -271,7 +270,6 @@ static int adt7470_update_thread(void *p)
                msleep_interruptible(data->auto_update_interval);
        }
 
-       complete_all(&data->auto_update_stop);
        return 0;
 }
 
@@ -1256,7 +1254,6 @@ 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)) {
@@ -1271,7 +1268,6 @@ 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;
 }
 
-- 
2.7.4
--
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