diff --git a/[refs] b/[refs]
index 96af489953f5..eedf94507065 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d156042f9fdffcb0171dc20f0d8b6df3fbf779c4
+refs/heads/master: eb31005eaf3ca0705b404a78eb92f714c9449276
diff --git a/trunk/drivers/char/tty_io.c b/trunk/drivers/char/tty_io.c
index c927f42c8e4d..b62bb67c3414 100644
--- a/trunk/drivers/char/tty_io.c
+++ b/trunk/drivers/char/tty_io.c
@@ -3721,7 +3721,6 @@ static void initialize_tty_struct(struct tty_struct *tty)
 	tty->buf.head = tty->buf.tail = NULL;
 	tty_buffer_init(tty);
 	INIT_DELAYED_WORK(&tty->buf.work, flush_to_ldisc);
-	init_MUTEX(&tty->buf.pty_sem);
 	mutex_init(&tty->termios_mutex);
 	init_waitqueue_head(&tty->write_wait);
 	init_waitqueue_head(&tty->read_wait);
diff --git a/trunk/include/linux/tty.h b/trunk/include/linux/tty.h
index 402de892b3ed..5824a9777ad7 100644
--- a/trunk/include/linux/tty.h
+++ b/trunk/include/linux/tty.h
@@ -74,7 +74,6 @@ struct tty_buffer {
 
 struct tty_bufhead {
 	struct delayed_work work;
-	struct semaphore pty_sem;
 	spinlock_t lock;
 	struct tty_buffer *head;	/* Queue head */
 	struct tty_buffer *tail;	/* Active buffer */