From: popcornmix <popcornmix@gmail.com>
Date: Mon, 14 Jul 2014 21:02:09 +0000 (+0100)
Subject: hid: Reduce default mouse polling interval to 60Hz
X-Git-Tag: archive/raspbian/4.9.30-2+deb9u2+rpi1~4^2~692
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=554f77332326ecbe48fd9b4c079fbaf5c9e16996;p=linux-4.9.git

hid: Reduce default mouse polling interval to 60Hz

Reduces overhead when using X
---

diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index f7a692f9e50c..dbe506d3ceec 100644
--- 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");
 
@@ -1089,7 +1089,9 @@ static int usbhid_start(struct hid_device *hid)
 		/* Change the polling interval of mice and joysticks. */
 		switch (hid->collection->usage) {
 		case HID_GD_MOUSE:
-			if (hid_mousepoll_interval > 0)
+			if (hid_mousepoll_interval == ~0 && interval < 16)
+				interval = 16;
+			else if (hid_mousepoll_interval != ~0 && hid_mousepoll_interval != 0)
 				interval = hid_mousepoll_interval;
 			break;
 		case HID_GD_JOYSTICK: