7cac240163
When executing ATAPI cmd at IDE mode, EFI_SUCCESS may be returned wrongly with old logic but in fact DRQ is not ready and the transaction doesn't get executed correctly at this time. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Feng Tian <feng.tian@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19611 6f19259b-4bc3-4df7-8a09-765794883524