Re: [PATCH] IntelFrameworkModulePkg/LegacyBios: Fix legacy serial redirection bug

["Fan, Jeff" <jeff.fan@intel.com>]

Reviewed-by: Jeff Fan <jeff.fan@intel.com>

-----Original Message-----
From: Ni, Ruiyu 
Sent: Tuesday, November 08, 2016 10:26 AM
To: edk2-devel@lists.01.org
Cc: Fan, Jeff
Subject: [PATCH] IntelFrameworkModulePkg/LegacyBios: Fix legacy serial redirection bug

Upon booting to a legacy OS, LegacyBios driver is responsible to initialize the BDA region with the correct COM port base address.
But the current logic to get the COM port base address from IsaIo instance is not correct.
The patch fixes this bug.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Jeff Fan <jeff.fan@intel.com>
---
 IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacySio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacySio.c b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacySio.c
index c853377..686a32d 100644
--- a/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacySio.c
+++ b/IntelFrameworkModulePkg/Csm/LegacyBiosDxe/LegacySio.c
@@ -354,7 +354,7 @@ LegacyBiosBuildSioDataFromIsaIo (
         //
         for (ChildIndex = 0; ChildIndex < EntryCount; ChildIndex++) {
           if ((OpenInfoBuffer[ChildIndex].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) != 0) {
-            Status = gBS->HandleProtocol (OpenInfoBuffer[ChildIndex].AgentHandle, &gEfiSerialIoProtocolGuid, (VOID **) &SerialIo);
+            Status = gBS->HandleProtocol 
+ (OpenInfoBuffer[ChildIndex].ControllerHandle, 
+ &gEfiSerialIoProtocolGuid, (VOID **) &SerialIo);
             if (!EFI_ERROR (Status)) {
               SioSerial           = &SioPtr->Serial[ResourceList->Device.UID];
               SioSerial->Address  = (UINT16) IoResource->StartRange;
--
2.9.0.windows.1