PS2_LSTS_PARERR
rxflags |= (intr_status & PS2_LSTS_PARERR) ? SERIO_PARITY : 0;
rxflags |= (intr_status & PS2_LSTS_PARERR) ? SERIO_TIMEOUT : 0;
PS2_LSTS_PARERR | PS2_LSTS_RXTDO;
PS2_LSTS_PARERR | PS2_LSTS_RXTDO)