1 files changed, 15 insertions, 9 deletions

diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 7a0d2e4661a1..6c03dcc5760a 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -199,11 +199,11 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 		case HID_GD_MOUSE:
 		case HID_GD_POINTER:  code += 0x110; break;
 		case HID_GD_JOYSTICK:
-				      if (code <= 0xf)
-					      code += BTN_JOYSTICK;
-				      else
-					      code += BTN_TRIGGER_HAPPY;
-				      break;
+				if (code <= 0xf)
+					code += BTN_JOYSTICK;
+				else
+					code += BTN_TRIGGER_HAPPY;
+				break;
 		case HID_GD_GAMEPAD:  code += 0x130; break;
 		default:
 			switch (field->physical) {
@@ -301,6 +301,9 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 
 	case HID_UP_DIGITIZER:
 		switch (usage->hid & 0xff) {
+		case 0x00: /* Undefined */
+			goto ignore;
+
 		case 0x30: /* TipPressure */
 			if (!test_bit(BTN_TOUCH, input->keybit)) {
 				device->quirks |= HID_QUIRK_NOTOUCH;
@@ -480,7 +483,7 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 
 	case HID_UP_LOGIVENDOR:
 		goto ignore;
-	
+
 	case HID_UP_PID:
 		switch (usage->hid & HID_USAGE) {
 		case 0xa4: map_key_clear(BTN_DEAD);	break;
@@ -534,6 +537,9 @@ mapped:
 			input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
 		else	input_set_abs_params(input, usage->code, a, b, 0, 0);
 
+		/* use a larger default input buffer for MT devices */
+		if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
+			input_set_events_per_packet(input, 60);
 	}
 
 	if (usage->type == EV_ABS &&
@@ -586,9 +592,9 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct
 			hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
 		if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
 		input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
-                input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
-                return;
-        }
+		input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
+		return;
+	}
 
 	if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
 		*quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);