tag	line	file	source code
UART_IER_MSI	1011	drivers/char/serial.c	info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI;
UART_IER_MSI	1231	drivers/char/serial.c	info->IER &= ~UART_IER_MSI;
UART_IER_MSI	1234	drivers/char/serial.c	info->IER |= UART_IER_MSI;
UART_IER_MSI	1241	drivers/char/serial.c	info->IER |= UART_IER_MSI;