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>
diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c
index 345bd0e..33f83fe 100644
--- a/drivers/tty/cyclades.c
+++ b/drivers/tty/cyclades.c
@@ -1124,14 +1124,8 @@
readl(&info->u.cyz.ch_ctrl->rs_status);
if (dcd & C_RS_DCD)
wake_up_interruptible(&info->port.open_wait);
- else {
- struct tty_struct *tty;
- tty = tty_port_tty_get(&info->port);
- if (tty) {
- tty_hangup(tty);
- tty_kref_put(tty);
- }
- }
+ else
+ tty_port_tty_hangup(&info->port, false);
}
break;
case C_CM_MCTS: