This is trying to clear the lower 32 bits but the type is wrong so it clears everything.
Signed-off-by: Dan Carpenter <[email protected]> diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c index 0723ba8..1cf4608 100644 --- a/drivers/hid/wacom_wac.c +++ b/drivers/hid/wacom_wac.c @@ -1765,7 +1765,7 @@ static int wacom_wac_pen_event(struct hid_device *hdev, struct hid_field *field, wacom_wac->hid_data.tipswitch |= value; return 0; case HID_DG_TOOLSERIALNUMBER: - wacom_wac->serial[0] = (wacom_wac->serial[0] & ~0xFFFFFFFF); + wacom_wac->serial[0] = (wacom_wac->serial[0] & ~0xFFFFFFFFULL); wacom_wac->serial[0] |= value; return 0; case WACOM_HID_WD_SENSE:
