Commit 14134b31 authored by Stephen Hemminger's avatar Stephen Hemminger Committed by Dmitry Torokhov

Input: polled device power saving

For slow running polling, it saves power to align wakeups on tick boundary.
Signed-off-by: default avatarStephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent e15b0213
......@@ -70,6 +70,7 @@ static int input_open_polled_device(struct input_dev *input)
{
struct input_polled_dev *dev = input->private;
int error;
unsigned long ticks;
error = input_polldev_start_workqueue();
if (error)
......@@ -78,8 +79,10 @@ static int input_open_polled_device(struct input_dev *input)
if (dev->flush)
dev->flush(dev);
queue_delayed_work(polldev_wq, &dev->work,
msecs_to_jiffies(dev->poll_interval));
ticks = msecs_to_jiffies(dev->poll_interval);
if (ticks >= HZ)
ticks = round_jiffies(ticks);
queue_delayed_work(polldev_wq, &dev->work, ticks);
return 0;
}
......
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