Symbol: wait_for_lsr
drivers/tty/serial/8250/8250_port.c
2001
tx_ready = wait_for_lsr(up, bits);
drivers/tty/serial/8250/8250_port.c
2016
wait_for_lsr(up, bits);
drivers/tty/serial/8250/8250_port.c
3235
if (wait_for_lsr(up, UART_LSR_THRE))