USB: option: fix port-data abuse

static bool debug;

/* per port private data */

#define N_IN_URB 4

#define N_OUT_URB 4

#define IN_BUFLEN 4096

#define OUT_BUFLEN 4096

struct option_port_private {

	/* Input endpoints and buffer for this port */

	struct urb *in_urbs[N_IN_URB];

	u8 *in_buffer[N_IN_URB];

	/* Output endpoints and buffer for this port */

	struct urb *out_urbs[N_OUT_URB];

	u8 *out_buffer[N_OUT_URB];

	unsigned long out_busy;		/* Bit vector of URBs in use */

	int opened;

	struct usb_anchor delayed;

	/* Settings for the port */

	int rts_state;	/* Handshaking pins (outputs) */

	int dtr_state;

	int cts_state;	/* Handshaking pins (inputs) */

	int dsr_state;

	int dcd_state;

	int ri_state;

	unsigned long tx_start_time[N_OUT_URB];

};

module_usb_serial_driver(serial_drivers, option_ids);

static bool is_blacklisted(const u8 ifnum, enum option_blacklist_reason reason,

	int err;

	int status = urb->status;

	struct usb_serial_port *port =  urb->context;

	struct option_port_private *portdata = usb_get_serial_port_data(port);

	struct usb_wwan_port_private *portdata =

					usb_get_serial_port_data(port);

	dbg("%s: urb %p port %p has data %p", __func__, urb, port, portdata);

	struct usb_serial *serial = port->serial;

	struct usb_wwan_intf_private *intfdata =

		(struct usb_wwan_intf_private *) serial->private;

	struct option_port_private *portdata;

	struct usb_wwan_port_private *portdata;

	int ifNum = serial->interface->cur_altsetting->desc.bInterfaceNumber;

	int val = 0;