USB: serial: omninet: fix reference leaks at open

commit 30572418b445d85fcfe6c8fe84c947d2606767d8 upstream.

This driver needlessly took another reference to the tty on open, a
reference which was then never released on close. This lead to not just
a leak of the tty, but also a driver reference leak that prevented the
driver from being unloaded after a port had once been opened.

Fixes: 4a90f09b20f4 ("tty: usb-serial krefs")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c
index a180b17d24323b074aee19e33bf0f497ad271d8a..76564b3bebb9bc3b1c6c2ec5761b74b2bcefcd1e 100644 (file)
--- a/drivers/usb/serial/omninet.c
+++ b/drivers/usb/serial/omninet.c
@@ -142,12 +142,6 @@ static int omninet_port_remove(struct usb_serial_port *port)
 
 static int omninet_open(struct tty_struct *tty, struct usb_serial_port *port)
 {
-       struct usb_serial       *serial = port->serial;
-       struct usb_serial_port  *wport;
-
-       wport = serial->port[1];
-       tty_port_tty_set(&wport->port, tty);
-
        return usb_serial_generic_open(tty, port);
 }