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Input: polled device - do not start polling if interval is zero 

If the poll interval is set to 0 via new sysfs entry and device is
opened after that, polling is started with interval 0. This causes
huge CPU load. Same happens if the rate was 0 when the device was
closed and then reopened.

Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Samu Onkalo 2009-11-23 10:01:33 -08:00 committed by Dmitry Torokhov
parent 381f3f1ccf
commit 11bb4cc7c7
1 changed files with 3 additions and 1 deletions
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4
drivers/input/input-polldev.c
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@ -88,7 +88,9 @@ static int input_open_polled_device(struct input_dev *input)
if (dev->open)
dev->open(dev);
queue_delayed_work(polldev_wq, &dev->work, 0);
/* Only start polling if polling is enabled */
if (dev->poll_interval > 0)
queue_delayed_work(polldev_wq, &dev->work, 0);
return 0;
}