[PATCH 1/3] drivers/char/tty_io.c: remove pty_sem

[Daniel Walker <dwalker@mvista.com>]

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

Signed-off-by: Daniel Walker <dwalker@mvista.com>

---
 drivers/char/tty_io.c |    1 -
 include/linux/tty.h   |    1 -
 2 files changed, 2 deletions(-)

Index: linux-2.6.23/drivers/char/tty_io.c
===================================================================
--- linux-2.6.23.orig/drivers/char/tty_io.c
+++ linux-2.6.23/drivers/char/tty_io.c
@@ -3721,7 +3721,6 @@ static void initialize_tty_struct(struct
 	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);
Index: linux-2.6.23/include/linux/tty.h
===================================================================
--- linux-2.6.23.orig/include/linux/tty.h
+++ linux-2.6.23/include/linux/tty.h
@@ -73,7 +73,6 @@ 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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