quoted

diff --git a/drivers/tty/serial/amba-pl011.c

b/drivers/tty/serial/amba-pl011.c index 6800f5f..ff3fed0 100644

--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c

@@ -224,6 +224,11 @@ static int pl011_fifo_to_tty(struct uart_amba_port

*uap)

quoted

 		uart_insert_char(&uap->port, ch, UART011_DR_OE, ch, flag);
 	}

What if we really do end up receiving some characters here?

Maybe the character is handled on next upcoming RTIS or RXIS in normal.
However, I agree with you there is possibility of already asserted RXIS at
this point. (with debugger?) In such a case, we may lose Rx interrupts
forever because it's not level-triggered, and the ISR lacks error interrupt
handling. Correct me if something wrong.
Thank you for your comment, Russell.

quoted

+	/* RXIS but RXFE? Just clear the interrupt */
+	if(unlikely(fifotaken == 0))
+		writew(UART011_RTIS | UART011_RXIS,
+		       uap->port.membase + UART011_ICR);