diff --git a/arch/ia64/hp/sim/simserial.c b/arch/ia64/hp/sim/simserial.c
index a346e1833bf2335b224a298469911233dab809fa..27f23fa5ca156e3a65622b43d05d1322fb871174 100644
--- a/arch/ia64/hp/sim/simserial.c
+++ b/arch/ia64/hp/sim/simserial.c
@@ -167,15 +167,9 @@ static  void receive_chars(struct tty_struct *tty, struct pt_regs *regs)
 			}
 		}
 		seen_esc = 0;
-		if (tty->flip.count >= TTY_FLIPBUF_SIZE) break;
 
-		*tty->flip.char_buf_ptr = ch;
-
-		*tty->flip.flag_buf_ptr = 0;
-
-		tty->flip.flag_buf_ptr++;
-		tty->flip.char_buf_ptr++;
-		tty->flip.count++;
+		if (tty_insert_flip_char(tty, ch, TTY_NORMAL) == 0)
+			break;
 	}
 	tty_flip_buffer_push(tty);
 }