USB: serial: keyspan: Fix possible null pointer dereference.

Signed-off-by: Huzaifa Sidhpurwala <huzaifas@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 0791778..67f41b5 100644 (file)
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -2121,16 +2121,16 @@ static int keyspan_usa49_send_setup(struct usb_serial *serial,
        /* Work out which port within the device is being setup */
        device_port = port->number - port->serial->minor;
 
-       dbg("%s - endpoint %d port %d (%d)",
-                       __func__, usb_pipeendpoint(this_urb->pipe),
-                       port->number, device_port);
-
-               /* Make sure we have an urb then send the message */
+       /* Make sure we have an urb then send the message */
        if (this_urb == NULL) {
                dbg("%s - oops no urb for port %d.", __func__, port->number);
                return -1;
        }
 
+       dbg("%s - endpoint %d port %d (%d)",
+                       __func__, usb_pipeendpoint(this_urb->pipe),
+                       port->number, device_port);
+
        /* Save reset port val for resend.
           Don't overwrite resend for open/close condition. */
        if ((reset_port + 1) > p_priv->resend_cont)