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 <[email protected]> Signed-off-by: Forest Bond <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
mna · Jul 13, 2010 · 8c8b01c · 8c8b01c
1 parent a11b3fa
commit 8c8b01c
Showing 1 changed file with 3 additions and 0 deletions.
diff --git 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;