linux-phytec-ti

USB: opticon: use port as urb context

Use port rather than private data as urb context, as the latter may be
accessed as port data, and remove the port field from the private data.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>