--- BasiliskII/src/Unix/serial_unix.cpp	2000/09/25 17:54:01	1.6
+++ BasiliskII/src/Unix/serial_unix.cpp	2002/02/07 16:10:55	1.10
@@ -1,7 +1,7 @@
 /*
  *  serial_unix.cpp - Serial device driver, Unix specific stuff
  *
- *  Basilisk II (C) 1997-2000 Christian Bauer
+ *  Basilisk II (C) 1997-2002 Christian Bauer
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -67,16 +67,7 @@ public:
 		fd = -1;
 		input_thread_active = output_thread_active = false;
 
-		pthread_attr_init(&thread_attr);
-#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
-		if (geteuid() == 0) {
-			pthread_attr_setinheritsched(&thread_attr, PTHREAD_EXPLICIT_SCHED);
-			pthread_attr_setschedpolicy(&thread_attr, SCHED_FIFO);
-			struct sched_param fifo_param;
-			fifo_param.sched_priority = (sched_get_priority_min(SCHED_FIFO) + sched_get_priority_max(SCHED_FIFO)) / 2 + 2;
-			pthread_attr_setschedparam(&thread_attr, &fifo_param);
-		}
-#endif
+		Set_pthread_attr(&thread_attr, 2);
 	}
 
 	virtual ~XSERDPort()
@@ -208,6 +199,8 @@ int16 XSERDPort::open(uint16 config)
 	configure(config);
 
 	// Start input/output threads
+	input_thread_cancel = false;
+	output_thread_cancel = false;
 	if (sem_init(&input_signal, 0, 0) < 0)
 		goto open_error;
 	if (sem_init(&output_signal, 0, 0) < 0)