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, 1 insertions, 6 deletions

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 8ac25adf31b4..755766e4b756 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -475,15 +475,10 @@ static void acm_write_bulk(struct urb *urb)
 static void acm_softint(struct work_struct *work)
 {
         struct acm *acm = container_of(work, struct acm, work);
-        struct tty_struct *tty;
 
         dev_vdbg(&acm->data->dev, "%s\n", __func__);
 
-        tty = tty_port_tty_get(&acm->port);
-        if (!tty)
-                return;
-        tty_wakeup(tty);
-        tty_kref_put(tty);
+        tty_port_tty_wakeup(&acm->port);
 }
 
 /*