1 files changed, 2 insertions, 6 deletions

diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index c13f6e747748..d66148a17fe3 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -628,7 +628,6 @@ static void sierra_instat_callback(struct urb *urb)
                         unsigned char signals = *((unsigned char *)
                                         urb->transfer_buffer +
                                         sizeof(struct usb_ctrlrequest));
-                        struct tty_struct *tty;
 
                         dev_dbg(&port->dev, "%s: signal x%x\n", __func__,
                                 signals);
@@ -639,11 +638,8 @@ static void sierra_instat_callback(struct urb *urb)
                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
 
-                        tty = tty_port_tty_get(&port->port);
-                        if (tty && !C_CLOCAL(tty) &&
-                                        old_dcd_state && !portdata->dcd_state)
-                                tty_hangup(tty);
-                        tty_kref_put(tty);
+                        if (old_dcd_state && !portdata->dcd_state)
+                                tty_port_tty_hangup(&port->port, true);
                 } else {
                         dev_dbg(&port->dev, "%s: type %x req %x\n",
                                 __func__, req_pkt->bRequestType,