[PATCH] input: polled device power saving

[Stephen Hemminger]

For slow running polling, it saves power to align wakeups on tick boundary.

Signed-off-by: Stephen Hemminger <[EMAIL PROTECTED]>

--- a/drivers/input/input-polldev.c     2007-06-22 03:36:04.000000000 +0200
+++ b/drivers/input/input-polldev.c     2007-09-12 13:18:59.000000000 +0200
@@ -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(stru
        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;
 }