diff options
Diffstat (limited to 'drivers/usb/serial/opticon.c')
| -rw-r--r-- | drivers/usb/serial/opticon.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c index 80f59b6350c..4cdb975caa8 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; } |