PCH_UART_HAL_FIFO_DIS 1304 drivers/tty/serial/pch_uart.c fifo_size = PCH_UART_HAL_FIFO_DIS; PCH_UART_HAL_FIFO_DIS 1355 drivers/tty/serial/pch_uart.c PCH_UART_HAL_FIFO_DIS, PCH_UART_HAL_TRIGGER1);