target/linux/brcm2708/patches-4.14/950-0193-hid-Reduce-default-mouse-polling-interval-to-60Hz.patch

   1 From cbfc3e48b94fdb14c5d8d2cc420ff6a4ad8fd39f 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 193/454] hid: Reduce default mouse polling interval to 60Hz
   5
   6 Reduces overhead when using X
   7 ---
   8  drivers/hid/usbhid/hid-core.c | 6 ++++--
   9  1 file changed, 4 insertions(+), 2 deletions(-)
  10
  11 --- a/drivers/hid/usbhid/hid-core.c
  12 +++ b/drivers/hid/usbhid/hid-core.c
  13 @@ -48,7 +48,7 @@
  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 @@ -1098,7 +1098,9 @@ static int usbhid_start(struct hid_devic
  23                 /* Change the polling interval of mice and joysticks. */
  24                 switch (hid->collection->usage) {
  25                 case HID_GD_MOUSE:
  26 -                       if (hid_mousepoll_interval > 0)
  27 +                       if (hid_mousepoll_interval == ~0 && interval < 16)
  28 +                               interval = 16;
  29 +                       else if (hid_mousepoll_interval != ~0 && hid_mousepoll_interval != 0)
  30                                 interval = hid_mousepoll_interval;
  31                         break;
  32                 case HID_GD_JOYSTICK: