From 8c8b01c38a70661d663175d355fdea85ca082272 Mon Sep 17 00:00:00 2001 From: Forest Bond 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 Signed-off-by: Forest Bond Signed-off-by: Jiri Kosina --- 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; -- 2.30.2