From: Gustavo Fernando Padovan <gustavo@las.ic.unicamp.br>

'struct tty_struct *real_tty' is not used in this function, so remove it.

Signed-off-by: Gustavo Fernando Padovan <gustavo@las.ic.unicamp.br>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/char/tty_ioctl.c |    7 -------
 1 file changed, 7 deletions(-)

diff -puN drivers/char/tty_ioctl.c~tty-remove-unused-var-real_tty-in-n_tty_ioctl drivers/char/tty_ioctl.c
--- a/drivers/char/tty_ioctl.c~tty-remove-unused-var-real_tty-in-n_tty_ioctl
+++ a/drivers/char/tty_ioctl.c
@@ -981,16 +981,9 @@ EXPORT_SYMBOL_GPL(tty_perform_flush);
 int n_tty_ioctl(struct tty_struct *tty, struct file *file,
 		       unsigned int cmd, unsigned long arg)
 {
-	struct tty_struct *real_tty;
 	unsigned long flags;
 	int retval;
 
-	if (tty->driver->type == TTY_DRIVER_TYPE_PTY &&
-	    tty->driver->subtype == PTY_TYPE_MASTER)
-		real_tty = tty->link;
-	else
-		real_tty = tty;
-
 	switch (cmd) {
 	case TCXONC:
 		retval = tty_check_change(tty);
_