Staging: serqt_usb2: add missing calls to tty_kref_put()

tty_port_tty_get() was called without a corresponding tty_kref_put()
in qt_read_bulk_callback() and qt_close().

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/serqt_usb2/serqt_usb2.c b/drivers/staging/serqt_usb2/serqt_usb2.c
index a9bd4106beb78a3701f99fb46d8a162b68c8e9f9..f9ff9c266780a9a0c3f2d19373bd96c1e8b7a78c 100644 (file)
--- a/drivers/staging/serqt_usb2/serqt_usb2.c
+++ b/drivers/staging/serqt_usb2/serqt_usb2.c
@@ -360,18 +360,18 @@ static void qt_read_bulk_callback(struct urb *urb)
        if (port_paranoia_check(port, __func__) != 0) {
                dbg("%s - port_paranoia_check, exiting\n", __func__);
                qt_port->ReadBulkStopped = 1;
-               return;
+               goto exit;
        }
 
        if (!serial) {
                dbg("%s - bad serial pointer, exiting\n", __func__);
-               return;
+               goto exit;
        }
        if (qt_port->closePending == 1) {
                /* Were closing , stop reading */
                dbg("%s - (qt_port->closepending == 1\n", __func__);
                qt_port->ReadBulkStopped = 1;
-               return;
+               goto exit;
        }
 
        /*
@@ -381,7 +381,7 @@ static void qt_read_bulk_callback(struct urb *urb)
         */
        if (qt_port->RxHolding == 1) {
                qt_port->ReadBulkStopped = 1;
-               return;
+               goto exit;
        }
 
        if (urb->status) {
@@ -389,7 +389,7 @@ static void qt_read_bulk_callback(struct urb *urb)
 
                dbg("%s - nonzero read bulk status received: %d\n",
                    __func__, urb->status);
-               return;
+               goto exit;
        }
 
        if (tty && RxCount) {
@@ -463,6 +463,8 @@ static void qt_read_bulk_callback(struct urb *urb)
        }
 
        schedule_work(&port->work);
+exit:
+       tty_kref_put(tty);
 }
 
 /*
@@ -1041,7 +1043,7 @@ static void qt_block_until_empty(struct tty_struct *tty,
        }
 }
 
-static void qt_close( struct usb_serial_port *port)
+static void qt_close(struct usb_serial_port *port)
 {
        struct usb_serial *serial = port->serial;
        struct quatech_port *qt_port;
@@ -1068,6 +1070,7 @@ static void qt_close( struct usb_serial_port *port)
        /* wait up to for transmitter to empty */
        if (serial->dev)
                qt_block_until_empty(tty, qt_port);
+       tty_kref_put(tty);
 
        /* Close uart channel */
        status = qt_close_channel(serial, index);