--- linux-2.4.18.SuSE/drivers/char/tty_io.c.orig	Tue Mar  5 15:35:55 2002
+++ linux-2.4.18.SuSE/drivers/char/tty_io.c	Tue Mar  5 15:39:30 2002
@@ -1696,8 +1696,18 @@
 		/* the driver doesn't support them. */
 		case TCSBRK:
 		case TCSBRKP:
-			if (!tty->driver.ioctl)
+			if (!tty->driver.ioctl) {
+				if (cmd == TCSBRK && arg) {
+					/* tcdrain case */
+					retval = tty_check_change(tty);
+					if (retval)
+						return retval;
+					tty_wait_until_sent(tty, 0);
+					if (signal_pending(current))
+						return -EINTR;
+				}
 				return 0;
+			}
 			retval = tty->driver.ioctl(tty, file, cmd, arg);
 			if (retval == -ENOIOCTLCMD)
 				retval = 0;
--- linux-2.4.18.SuSE/drivers/char/tty_ioctl.c.orig	Tue Mar  5 14:31:37 2002
+++ linux-2.4.18.SuSE/drivers/char/tty_ioctl.c	Tue Mar  5 14:32:16 2002
@@ -394,7 +394,7 @@
 				return -EFAULT;
 			return 0;
 		case TCSETSF:
-			return set_termios(real_tty, arg,  TERMIOS_FLUSH);
+			return set_termios(real_tty, arg,  TERMIOS_FLUSH | TERMIOS_WAIT);
 		case TCSETSW:
 			return set_termios(real_tty, arg, TERMIOS_WAIT);
 		case TCSETS:
@@ -402,7 +402,7 @@
 		case TCGETA:
 			return get_termio(real_tty,(struct termio *) arg);
 		case TCSETAF:
-			return set_termios(real_tty, arg, TERMIOS_FLUSH | TERMIOS_TERMIO);
+			return set_termios(real_tty, arg, TERMIOS_FLUSH | TERMIOS_WAIT | TERMIOS_TERMIO);
 		case TCSETAW:
 			return set_termios(real_tty, arg, TERMIOS_WAIT | TERMIOS_TERMIO);
 		case TCSETA: