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hwmon: (adt7470) Allow faster removal

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adt7470_remove will wait for the update thread to complete before
returning. This had a worst-case time of up to the user-configurable
auto_update_interval.

Replace msleep_interruptible with set_current_state and schedule_timeout
so that kthread_stop will interrupt the sleep.

Signed-off-by: Joshua Scott <joshua.scott@alliedtelesis.co.nz>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Joshua Scott 2016-09-09 17:19:26 +12:00 committed by Guenter Roeck
parent feca3132d9
commit 93cacfd41f
1 changed files with 4 additions and 1 deletions
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5
drivers/hwmon/adt7470.c
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@ -273,9 +273,12 @@ static int adt7470_update_thread(void *p)
mutex_lock(&data->lock);
adt7470_read_temperatures(client, data);
mutex_unlock(&data->lock);
set_current_state(TASK_INTERRUPTIBLE);
if (kthread_should_stop())
break;
msleep_interruptible(data->auto_update_interval);
schedule_timeout(msecs_to_jiffies(data->auto_update_interval));
}
complete_all(&data->auto_update_stop);