kernel: bump 4.9 to 4.9.57
[openwrt/openwrt.git] / target / linux / brcm2708 / patches-4.9 / 950-0061-hid-Reduce-default-mouse-polling-interval-to-60Hz.patch
1 From 56f13ae9d518c5aec8736ccc639f2f5e2c3784ad Mon Sep 17 00:00:00 2001
2 From: popcornmix <popcornmix@gmail.com>
3 Date: Mon, 14 Jul 2014 22:02:09 +0100
4 Subject: [PATCH] hid: Reduce default mouse polling interval to 60Hz
5
6 Reduces overhead when using X
7 ---
8 drivers/hid/usbhid/hid-core.c | 10 +++++++---
9 1 file changed, 7 insertions(+), 3 deletions(-)
10
11 --- a/drivers/hid/usbhid/hid-core.c
12 +++ b/drivers/hid/usbhid/hid-core.c
13 @@ -49,7 +49,7 @@
14 * Module parameters.
15 */
16
17 -static unsigned int hid_mousepoll_interval;
18 +static unsigned int hid_mousepoll_interval = ~0;
19 module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
20 MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
21
22 @@ -1093,8 +1093,12 @@ static int usbhid_start(struct hid_devic
23 }
24
25 /* Change the polling interval of mice. */
26 - if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0)
27 - interval = hid_mousepoll_interval;
28 + if (hid->collection->usage == HID_GD_MOUSE) {
29 + if (hid_mousepoll_interval == ~0 && interval < 16)
30 + interval = 16;
31 + else if (hid_mousepoll_interval != ~0 && hid_mousepoll_interval != 0)
32 + interval = hid_mousepoll_interval;
33 + }
34
35 ret = -ENOMEM;
36 if (usb_endpoint_dir_in(endpoint)) {