zd_chip_to_mac
struct wiphy *wiphy = zd_chip_to_mac(chip)->hw->wiphy;
cancel_work_sync(&zd_chip_to_mac(chip)->process_intr);
u8 *addr = zd_mac_get_perm_addr(zd_chip_to_mac(chip));
return zd_chip_to_mac(zd_usb_to_chip(usb));