TTY: add tty_port_tty_hangup helper

It allows for cleaning up on a considerable amount of places. They did
port_get, hangup, kref_put. Now the only thing needed is to call
tty_port_tty_hangup which does exactly that. And they can also decide
whether to consider CLOCAL or completely ignore that.

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

1 files changed, 1 insertions, 6 deletions

diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c
index 1d270034bfc3..bbffd7a431e9 100644
--- a/drivers/tty/rocket.c
+++ b/drivers/tty/rocket.c
@@ -521,15 +521,10 @@ static void rp_handle_port(struct r_port *info)
                        (ChanStatus & CD_ACT) ? "on" : "off");
 #endif
                 if (!(ChanStatus & CD_ACT) && info->cd_status) {
-                        struct tty_struct *tty;
 #ifdef ROCKET_DEBUG_HANGUP
                         printk(KERN_INFO "CD drop, calling hangup.\n");
 #endif
-                        tty = tty_port_tty_get(&info->port);
-                        if (tty) {
-                                tty_hangup(tty);
-                                tty_kref_put(tty);
-                        }
+                        tty_port_tty_hangup(&info->port, false);
                 }
                 info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;
                 wake_up_interruptible(&info->port.open_wait);