MHI_WWAN_RX_REFILL
set_bit(MHI_WWAN_RX_REFILL, &mhiwwan->flags);
clear_bit(MHI_WWAN_RX_REFILL, &mhiwwan->flags);
if (test_bit(MHI_WWAN_RX_REFILL, &mhiwwan->flags))
if (test_bit(MHI_WWAN_RX_REFILL, &mhiwwan->flags))