From 8c8b01c38a70661d663175d355fdea85ca082272 Mon Sep 17 00:00:00 2001
From: Forest Bond <forest@alittletooquiet.net>
Date: Tue, 13 Jul 2010 23:50:57 +0200
Subject: [PATCH] HID: ignore digitizer usage Undefined (0x00)
SMART Technologies has recommended this change to fix a problem reported
with SMART Board series interactive whiteboards.
A description of the device-specific symptom follows:
When the board is connected my mouse bounces up to the top left corner.
Bjorn has tested this fix with model SB680.
Tested-by: Bjorn Behrendt <bbehrendt@msjvermont.org>
Signed-off-by: Forest Bond <forest@alittletooquiet.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
---
drivers/hid/hid-input.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 7a0d2e4661a1..6b10e5afe770 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -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;
--
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