From eb31005eaf3ca0705b404a78eb92f714c9449276 Mon Sep 17 00:00:00 2001
From: Daniel Walker <dwalker@mvista.com>
Date: Wed, 6 Feb 2008 01:37:31 -0800
Subject: [PATCH] drivers/char/tty_io.c: remove pty_sem

I couldn't find any users, so removing it..

Signed-off-by: Daniel Walker <dwalker@mvista.com>
Acked-by: Alan Cox <alan@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 drivers/char/tty_io.c | 1 -
 include/linux/tty.h   | 1 -
 2 files changed, 2 deletions(-)

diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index c927f42c8e4d9..b62bb67c34149 100644
--- a/drivers/char/tty_io.c
+++ b/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/include/linux/tty.h b/include/linux/tty.h
index 402de892b3edc..5824a9777ad7d 100644
--- a/include/linux/tty.h
+++ b/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 */
-- 
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