From 67dd0ccbee405ea5d7d1b0bbdf72a574e889c143 Mon Sep 17 00:00:00 2001
From: Ed Schouten <ed@FreeBSD.org>
Date: Sun, 21 Dec 2008 21:16:57 +0000
Subject: [PATCH] Set PTS_FINISHED before waking up any threads.

Inside ptsdrv_{in,out}wakeup() we call KNOTE_LOCKED() to wake up any
kevent(2) users. Because the kqueue handlers are executed synchronously,
we must set PTS_FINISHED before calling ptsdrv_{in,out}wakeup().

Discovered by:	nork
---
 sys/kern/tty_pts.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sys/kern/tty_pts.c b/sys/kern/tty_pts.c
index c767daad127..49ea84c5d11 100644
--- a/sys/kern/tty_pts.c
+++ b/sys/kern/tty_pts.c
@@ -630,10 +630,9 @@ ptsdrv_close(struct tty *tp)
 	struct pts_softc *psc = tty_softc(tp);
 
 	/* Wake up any blocked readers/writers. */
+	psc->pts_flags |= PTS_FINISHED;
 	ptsdrv_outwakeup(tp);
 	ptsdrv_inwakeup(tp);
-
-	psc->pts_flags |= PTS_FINISHED;
 }
 
 static void