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, 3 insertions, 6 deletions

diff --git a/drivers/tty/nozomi.c b/drivers/tty/nozomi.c
index 2e5bbdc09e1c..d6080c3831ef 100644
--- a/drivers/tty/nozomi.c
+++ b/drivers/tty/nozomi.c
@@ -1501,12 +1501,9 @@ static void tty_exit(struct nozomi *dc)
 
         DBG1(" ");
 
-        for (i = 0; i < MAX_PORT; ++i) {
-                struct tty_struct *tty = tty_port_tty_get(&dc->port[i].port);
-                if (tty && list_empty(&tty->hangup_work.entry))
-                        tty_hangup(tty);
-                tty_kref_put(tty);
-        }
+        for (i = 0; i < MAX_PORT; ++i)
+                tty_port_tty_hangup(&dc->port[i].port, false);
+
         /* Racy below - surely should wait for scheduled work to be done or
            complete off a hangup method ? */
         while (dc->open_ttys)