Symbol: UPF_NO_THRE_TEST
drivers/ptp/ptp_ocp.c
2290
uart.port.flags = UPF_FIXED_TYPE | UPF_IOREMAP | UPF_NO_THRE_TEST;
drivers/tty/serial/8250/8250_aspeed_vuart.c
452
UPF_NO_THRE_TEST;
drivers/tty/serial/8250/8250_port.c
2156
if (up->port.flags & UPF_NO_THRE_TEST)