UART_DUMMY_DR_RX  325 drivers/tty/serial/amba-pl011.c 		ch = pl011_read(uap, REG_DR) | UART_DUMMY_DR_RX;
UART_DUMMY_DR_RX 1942 drivers/tty/serial/amba-pl011.c 		port->ignore_status_mask |= UART_DUMMY_DR_RX;