tag	line	file	source code
UART_LCR	179	kernel/chr_drv/serial.c	serial_out(info, UART_LCR, serial_inp(info, UART_LCR) | UART_LCR_SBC);
UART_LCR	181	kernel/chr_drv/serial.c	serial_out(info, UART_LCR, serial_inp(info, UART_LCR) & ~UART_LCR_SBC);
UART_LCR	573	kernel/chr_drv/serial.c	serial_outp(info, UART_LCR, UART_LCR_WLEN8);  /* reset DLAB */
UART_LCR	687	kernel/chr_drv/serial.c	serial_outp(info, UART_LCR, cval | UART_LCR_DLAB);  /* set DLAB */
UART_LCR	690	kernel/chr_drv/serial.c	serial_outp(info, UART_LCR, cval);    /* reset DLAB */