TTY: add ports array to tty_driver

It will hold tty_port structures for all drivers which do not want to
define tty->ops->install hook.

We ignore PTY here because it wants 1 million lines and it installs
tty_port in ->install anyway.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index 6e6dbb7447b6..04419c141b00 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -313,6 +313,7 @@ struct tty_driver {
          * Pointer to the tty data structures
          */
         struct tty_struct **ttys;
+        struct tty_port **ports;
         struct ktermios **termios;
         void *driver_state;