serial: core: Remove tty port activate() and shutdown() methods

serial core does not use tty_port_open() or tty_port_close(); serial
core defines and extends it's own tty open() and close() methods
(uart_open() and uart_close(), respectively).

Remove the tty_port activate() and shutdown() initializations, and
the uart_port_activate() function, which is never called.

NB: uart_port_shutdown() is used by uart_close() => uart_shutdown()
call chain (but not via the tty_port methods).

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 7 deletions

diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 6ae7cc118ac4..603d2cc3f424 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1530,11 +1530,6 @@ static void uart_hangup(struct tty_struct *tty)
         mutex_unlock(&port->mutex);
 }
 
-static int uart_port_activate(struct tty_port *port, struct tty_struct *tty)
-{
-        return 0;
-}
-
 static void uart_port_shutdown(struct tty_port *port)
 {
         struct uart_state *state = container_of(port, struct uart_state, port);
@@ -2377,8 +2372,6 @@ static const struct tty_operations uart_ops = {
 };
 
 static const struct tty_port_operations uart_port_ops = {
-        .activate       = uart_port_activate,
-        .shutdown       = uart_port_shutdown,
         .carrier_raised = uart_carrier_raised,
         .dtr_rts        = uart_dtr_rts,
 };