From 56f13ae9d518c5aec8736ccc639f2f5e2c3784ad Mon Sep 17 00:00:00 2001 From: popcornmix <popcornmix@gmail.com> Date: Mon, 14 Jul 2014 22:02:09 +0100 Subject: [PATCH] hid: Reduce default mouse polling interval to 60Hz Reduces overhead when using X --- drivers/hid/usbhid/hid-core.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -49,7 +49,7 @@ * Module parameters. */ -static unsigned int hid_mousepoll_interval; +static unsigned int hid_mousepoll_interval = ~0; module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644); MODULE_PARM_DESC(mousepoll, "Polling interval of mice"); @@ -1093,8 +1093,12 @@ static int usbhid_start(struct hid_devic } /* Change the polling interval of mice. */ - if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0) - interval = hid_mousepoll_interval; + if (hid->collection->usage == HID_GD_MOUSE) { + if (hid_mousepoll_interval == ~0 && interval < 16) + interval = 16; + else if (hid_mousepoll_interval != ~0 && hid_mousepoll_interval != 0) + interval = hid_mousepoll_interval; + } ret = -ENOMEM; if (usb_endpoint_dir_in(endpoint)) {