TTY: pty, remove superfluous ptm test

The code looks like:
if (tty->driver->subtype == PTY_TYPE_MASTER) {
  ...
  if (tty->driver == ptm_driver)

But the second if is superfluous because only the ptm_driver is of
PTY_TYPE_MASTER subtype.

Also we can remove the #if now because devpts_pty_kill is defined as
an empty function for non-CONFIG_UNIX98_PTYS configs.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index d505837b3478..ddec9f3c3396 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -54,10 +54,7 @@ static void pty_close(struct tty_struct *tty, struct file *filp)
         wake_up_interruptible(&tty->link->write_wait);
         if (tty->driver->subtype == PTY_TYPE_MASTER) {
                 set_bit(TTY_OTHER_CLOSED, &tty->flags);
-#ifdef CONFIG_UNIX98_PTYS
-                if (tty->driver == ptm_driver)
-                        devpts_pty_kill(tty->link);
-#endif
+                devpts_pty_kill(tty->link);
                 tty_unlock();
                 tty_vhangup(tty->link);
                 tty_lock();