IXGBE_FLAG2_FW_ASYNC_EVENT
adapter->flags2 |= IXGBE_FLAG2_FW_ASYNC_EVENT;
if (adapter->flags2 & IXGBE_FLAG2_FW_ASYNC_EVENT)
adapter->flags2 &= ~IXGBE_FLAG2_FW_ASYNC_EVENT;
if (adapter->flags2 & IXGBE_FLAG2_FW_ASYNC_EVENT)