Since current codes in NvmExpressDxe already support the non-blocking I/O feature for EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL interface, the relative bit in the 'Attributes' field of EFI_NVM_EXPRESS_PASS_THRU_MODE should be set to reflect this. Cc: Feng Tian <feng.tian@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Hao Wu <hao.a.wu@intel.com> Reviewed-by: Feng Tian <feng.tian@intel.com>