tag	line	file	source code
UART_LCR_SBC	1679	drivers/char/serial.c	serial_out(info, UART_LCR, serial_inp(info, UART_LCR) | UART_LCR_SBC);
UART_LCR_SBC	1681	drivers/char/serial.c	serial_out(info, UART_LCR, serial_inp(info, UART_LCR) & ~UART_LCR_SBC);