1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index 80f59b6350cb..4cdb975caa89 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -501,12 +501,13 @@ static int opticon_resume(struct usb_interface *intf)
         struct usb_serial_port *port = serial->port[0];
         int result;
 
-        mutex_lock(&port->mutex);
-        if (port->port.count)
+        mutex_lock(&port->port.mutex);
+        /* This is protected by the port mutex against close/open */
+        if (test_bit(ASYNCB_INITIALIZED, &port->port.flags))
                 result = usb_submit_urb(priv->bulk_read_urb, GFP_NOIO);
         else
                 result = 0;
-        mutex_unlock(&port->mutex);
+        mutex_unlock(&port->port.mutex);
         return result;
 }