opticon: Fix resume logic

Opticon now takes the right mutex to check the port status but the status
check is done wrongly for the modern serial code, so fix it.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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;