diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 6fabc059efed..f5bd8426fd75 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -1578,9 +1578,6 @@ static int pl011_startup(struct uart_port *port)
 
 	writew(uap->vendor->ifls, uap->port.membase + UART011_IFLS);
 
-	/* Assume that TX IRQ doesn't work until we see one: */
-	uap->tx_irq_seen = 0;
-
 	spin_lock_irq(&uap->port.lock);
 
 	/* restore RTS and DTR */