[edk2-devel] [PATCH 1/3] OptionRomPkg: Update the comments of GetInformation function

["Qingyu" <qingyu.shang@intel.com>]

Refer to Uefi spec 2.10 section 11.11.2, add a new retval
EFI_NOT_FOUND to EFI_ADAPTER_INFORMATION_PROTOCOL.GetInformation().
Reference: [mantis #1866] - GetInfo() of Adapter Information
Protocol should have a provision for IHV to return no data.

Cc: Pedro Falcato <pedro.falcato@gmail.com>
Cc: Ray Ni <ray.ni@intel.com>
Signed-off-by: Qingyu <qingyu.shang@intel.com>
Signed-off-by: Gahan Saraiya <gahan.saraiya@intel.com>
---
 Drivers/OptionRomPkg/UndiRuntimeDxe/Undi32.h      | 5 ++++-
 Drivers/OptionRomPkg/UndiRuntimeDxe/UndiAipImpl.c | 5 ++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/Drivers/OptionRomPkg/UndiRuntimeDxe/Undi32.h b/Drivers/OptionRomPkg/UndiRuntimeDxe/Undi32.h
index 31c55a8e11..665221e952 100644
--- a/Drivers/OptionRomPkg/UndiRuntimeDxe/Undi32.h
+++ b/Drivers/OptionRomPkg/UndiRuntimeDxe/Undi32.h
@@ -350,7 +350,9 @@ VOID PxeUpdate (NIC_DATA_INSTANCE *NicPtr, PXE_SW_UNDI *PxePtr);
 
   This function returns information of type InformationType from the adapter.
   If an adapter does not support the requested informational type, then
-  EFI_UNSUPPORTED is returned. 
+  EFI_UNSUPPORTED is returned. If an adapter does not contain Information for
+  the requested InformationType, it fills InformationBlockSize with 0 and
+  returns EFI_NOT_FOUND.
 
   @param[in]  This                   A pointer to the EFI_ADAPTER_INFORMATION_PROTOCOL instance.
   @param[in]  InformationType        A pointer to an EFI_GUID that defines the contents of InformationBlock.
@@ -360,6 +362,7 @@ VOID PxeUpdate (NIC_DATA_INSTANCE *NicPtr, PXE_SW_UNDI *PxePtr);
 
   @retval EFI_SUCCESS                The InformationType information was retrieved.
   @retval EFI_UNSUPPORTED            The InformationType is not known.
+  @retval EFI_NOT_FOUND              Information is not available for the requested information type.
   @retval EFI_DEVICE_ERROR           The device reported an error.
   @retval EFI_OUT_OF_RESOURCES       The request could not be completed due to a lack of resources.
   @retval EFI_INVALID_PARAMETER      This is NULL. 
diff --git a/Drivers/OptionRomPkg/UndiRuntimeDxe/UndiAipImpl.c b/Drivers/OptionRomPkg/UndiRuntimeDxe/UndiAipImpl.c
index 21151a076f..d80ce65da9 100644
--- a/Drivers/OptionRomPkg/UndiRuntimeDxe/UndiAipImpl.c
+++ b/Drivers/OptionRomPkg/UndiRuntimeDxe/UndiAipImpl.c
@@ -18,7 +18,9 @@ EFI_GUID   mSupportedInfoTypes[] = {
 
   This function returns information of type InformationType from the adapter.
   If an adapter does not support the requested informational type, then
-  EFI_UNSUPPORTED is returned. 
+  EFI_UNSUPPORTED is returned. If an adapter does not contain Information for
+  the requested InformationType, it fills InformationBlockSize with 0 and
+  returns EFI_NOT_FOUND.
 
   @param[in]  This                   A pointer to the EFI_ADAPTER_INFORMATION_PROTOCOL instance.
   @param[in]  InformationType        A pointer to an EFI_GUID that defines the contents of InformationBlock.
@@ -28,6 +30,7 @@ EFI_GUID   mSupportedInfoTypes[] = {
 
   @retval EFI_SUCCESS                The InformationType information was retrieved.
   @retval EFI_UNSUPPORTED            The InformationType is not known.
+  @retval EFI_NOT_FOUND              Information is not available for the requested information type.
   @retval EFI_DEVICE_ERROR           The device reported an error.
   @retval EFI_OUT_OF_RESOURCES       The request could not be completed due to a lack of resources.
   @retval EFI_INVALID_PARAMETER      This is NULL. 
-- 
2.39.1.windows.1



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