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>

diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index c927f42..b62bb67 100644 (file)
--- 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 402de89..5824a97 100644 (file)
--- 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 */