oti6858_control_pkt
#define OTI6858_CTRL_PKT_SIZE sizeof(struct oti6858_control_pkt)
struct oti6858_control_pkt status;
struct oti6858_control_pkt *new_setup;
struct oti6858_control_pkt *buf;
struct oti6858_control_pkt *xs = urb->transfer_buffer;