UART_ACR_ICRRD    543 drivers/tty/serial/8250/8250_port.c 	serial_icr_write(up, UART_ACR, up->acr | UART_ACR_ICRRD);
UART_ACR_ICRRD    180 drivers/tty/serial/sunsu.c 	serial_icr_write(up, UART_ACR, up->acr | UART_ACR_ICRRD);