tag	line	file	source code
UART_LSR_PE	349	drivers/char/serial.c	} else if (*status & UART_LSR_PE)
UART_LSR_PE	802	drivers/char/serial.c	UART_LSR_FE | UART_LSR_PE);
UART_LSR_PE	1411	drivers/char/serial.c	UART_LSR_FE | UART_LSR_PE);