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HID: ignore digitizer usage Undefined (0x00)

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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>
This commit is contained in:
Forest Bond 2010-07-13 23:50:57 +02:00 committed by Jiri Kosina
parent a11b3fab94
commit 8c8b01c38a
1 changed files with 3 additions and 0 deletions
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3
drivers/hid/hid-input.c
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@ -301,6 +301,9 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
case HID_UP_DIGITIZER: case HID_UP_DIGITIZER:
switch (usage->hid & 0xff) { switch (usage->hid & 0xff) {
case 0x00: /* Undefined */
goto ignore;
case 0x30: /* TipPressure */ case 0x30: /* TipPressure */
if (!test_bit(BTN_TOUCH, input->keybit)) { if (!test_bit(BTN_TOUCH, input->keybit)) {
device->quirks |= HID_QUIRK_NOTOUCH; device->quirks |= HID_QUIRK_NOTOUCH;