diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index 54fa6f6262487ce06fde1af56841214e41fe5b5c..8af4417c738e898ebfec6d13111706e2cca2d737 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -1521,6 +1521,8 @@ static inline void __stop_tx(struct uart_8250_port *p)
 
 	if (em485) {
 		unsigned char lsr = serial_in(p, UART_LSR);
+		p->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS;
+
 		/*
 		 * To provide required timeing and allow FIFO transfer,
 		 * __stop_tx_rs485() must be called only when both FIFO and