TTY: add tty_port_tty_hangup helper

[karo-tx-linux.git] / drivers / usb / serial / sierra.c

diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index c13f6e747748b31d16c0d087fa4f8b1953826285..d66148a17fe36548e019c0b8b7b60aa563548a1a 100644 (file)
--- 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,