TTY: serial, define uart_port_activate/shutdown

This is a preparation for the next patches which will move the stuff
from uart_open and uart_close/hangup here. Then we will use
tty_port_* helpers.

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

diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 2ca4df4..d7e8a5e 100644 (file)
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1404,6 +1404,15 @@ 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)
+{
+}
+
 static int uart_carrier_raised(struct tty_port *port)
 {
        struct uart_state *state = container_of(port, struct uart_state, port);
@@ -2162,6 +2171,8 @@ 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,
 };