TTY: add tty_port_tty_wakeup helper

It allows for cleaning up on a considerable amount of places. They did
port_get, wakeup, kref_put. Now the only thing needed is to call
tty_port_tty_wakeup which does exactly that.

One exception is ifx6x60 where tty_wakeup was open-coded. We now call
tty_wakeup properly there.

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

1 files changed, 2 insertions, 5 deletions

diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index 39cb9b807c3c..437f2d579cde 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -1227,7 +1227,6 @@ static void ti_send(struct ti_port *tport)
 {
         int count, result;
         struct usb_serial_port *port = tport->tp_port;
-        struct tty_struct *tty = tty_port_tty_get(&port->port); /* FIXME */
         unsigned long flags;
 
         spin_lock_irqsave(&tport->tp_lock, flags);
@@ -1268,14 +1267,12 @@ static void ti_send(struct ti_port *tport)
         }
 
         /* more room in the buffer for new writes, wakeup */
-        if (tty)
-                tty_wakeup(tty);
-        tty_kref_put(tty);
+        tty_port_tty_wakeup(&port->port);
+
         wake_up_interruptible(&tport->tp_write_wait);
         return;
 unlock:
         spin_unlock_irqrestore(&tport->tp_lock, flags);
-        tty_kref_put(tty);
         return;
 }