1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index 0ded8bd6ec85..9b2cef81cde0 100644
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -563,10 +563,11 @@ static void mct_u232_read_int_callback(struct urb *urb)
          * Work-a-round: handle the 'usual' bulk-in pipe here
          */
         if (urb->transfer_buffer_length > 2) {
-                tty = port->port.tty;
+                tty = tty_port_tty_get(&port->port);
                 if (urb->actual_length) {
                         tty_insert_flip_string(tty, data, urb->actual_length);
                         tty_flip_buffer_push(tty);
+                        tty_kref_put(tty);
                 }
                 goto exit;
         }
@@ -591,7 +592,7 @@ static void mct_u232_read_int_callback(struct urb *urb)
          * to look in to this before committing any code.
          */
         if (priv->last_lsr & MCT_U232_LSR_ERR) {
-                tty = port->port.tty;
+                tty = tty_port_tty_get(&port->port);
                 /* Overrun Error */
                 if (priv->last_lsr & MCT_U232_LSR_OE) {
                 }
@@ -604,6 +605,7 @@ static void mct_u232_read_int_callback(struct urb *urb)
                 /* Break Indicator */
                 if (priv->last_lsr & MCT_U232_LSR_BI) {
                 }
+                tty_kref_put(tty);
         }
 #endif
         spin_unlock_irqrestore(&priv->lock, flags);