Reviewed-by: jiewen....@intel.com > -----Original Message----- > From: Zeng, Star > Sent: Monday, August 13, 2018 4:55 PM > To: edk2-devel@lists.01.org > Cc: Zeng, Star <star.z...@intel.com>; Yao, Jiewen <jiewen....@intel.com>; > Anbazhagan Baraneedharan <anbazha...@hp.com> > Subject: [PATCH] MdeModulePkg SmmLockBox: Return actual data length in > SmmLockBoxRestore > > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1082 > > Current code only returns actual data length in case of return status > buffer too small. > If caller provided a buffer that's large enough to restore data from > lock box, actual data length is not returned. It needs to be updated > in case of return status as success as well. > > Cc: Jiewen Yao <jiewen....@intel.com> > Cc: Anbazhagan Baraneedharan <anbazha...@hp.com> > Contributed-under: TianoCore Contribution Agreement 1.1 > Signed-off-by: Star Zeng <star.z...@intel.com> > --- > MdeModulePkg/Universal/LockBox/SmmLockBox/SmmLockBox.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/MdeModulePkg/Universal/LockBox/SmmLockBox/SmmLockBox.c > b/MdeModulePkg/Universal/LockBox/SmmLockBox/SmmLockBox.c > index 28d5180e011e..5a11743cb921 100644 > --- a/MdeModulePkg/Universal/LockBox/SmmLockBox/SmmLockBox.c > +++ b/MdeModulePkg/Universal/LockBox/SmmLockBox/SmmLockBox.c > @@ -217,7 +217,10 @@ SmmLockBoxRestore ( > (VOID *)(UINTN)TempLockBoxParameterRestore.Buffer, > (UINTN *)&TempLockBoxParameterRestore.Length > ); > - if (Status == EFI_BUFFER_TOO_SMALL) { > + if ((Status == EFI_BUFFER_TOO_SMALL) || (Status == EFI_SUCCESS)) { > + // > + // Return the actual Length value. > + // > LockBoxParameterRestore->Length = > TempLockBoxParameterRestore.Length; > } > } > -- > 2.7.0.windows.1
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