tag	line	file	source code
UART_IER_RLSI	1011	drivers/char/serial.c	info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI;
UART_IER_RLSI	2140	drivers/char/serial.c	info->IER &= ~UART_IER_RLSI;