input: polled device power saving
Subsystems (2)
PATCH 1/1 input: polled device power saving
For slow running polling, it saves power to align wakeups on tick boundary.
Signed-off-by Stephen Hemminger <[email protected]>
drivers/input/input-polldev.c +5 -2
@@ -70,6 +70,7 @@ static int input_open_polled_device(stru {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(struif (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 ; }
Dmitry Torokhov
maintainerHi Stephen,
Quoted 2 lines · Stephen Hemminger
For slow running polling, it saves power to align wakeups on tick boundary.
Will apply, thank you.
As far as the apanel driver goes - still working through my backlog caused by a couple of hard drive failures, please bear with me...
Signature · 1 line
Dmitry