WDM_WWAN_IN_USE
if (test_bit(WDM_WWAN_IN_USE, &desc->flags)) {
if (test_bit(WDM_WWAN_IN_USE, &desc->flags)) {
set_bit(WDM_WWAN_IN_USE, &desc->flags);
clear_bit(WDM_WWAN_IN_USE, &desc->flags);
clear_bit(WDM_WWAN_IN_USE, &desc->flags);