From: Samu Onkalo Date: Mon, 23 Nov 2009 18:01:33 +0000 (-0800) Subject: Input: polled device - do not start polling if interval is zero X-Git-Tag: v2.6.33-rc6~2^2~71 X-Git-Url: http://ftp.safe.ca/?p=safe%2Fjmp%2Flinux-2.6;a=commitdiff_plain;h=11bb4cc7c772963952304398f999fc195b0da285 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 Signed-off-by: Dmitry Torokhov --- diff --git a/drivers/input/input-polldev.c b/drivers/input/input-polldev.c index 40cf0b0..6a2eb39 100644 --- a/drivers/input/input-polldev.c +++ b/drivers/input/input-polldev.c @@ -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; }