1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index c03fdc0242dd..4cdb975caa89 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -502,7 +502,8 @@ static int opticon_resume(struct usb_interface *intf)
         int result;
 
         mutex_lock(&port->port.mutex);
-        if (port->port.count)
+        /* 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;