From 38a7027076edc33e6edc203ede39016982e005fb Mon Sep 17 00:00:00 2001
From: klu2 <klu2@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Thu, 11 Jan 2007 07:06:00 +0000
Subject: AsyncRequestPtr maybe NULL after its callback function is invoke. So
 Caching it temporary.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2217 6f19259b-4bc3-4df7-8a09-765794883524
---
 EdkModulePkg/Bus/Pci/Ehci/Dxe/EhciSched.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'EdkModulePkg/Bus')

diff --git a/EdkModulePkg/Bus/Pci/Ehci/Dxe/EhciSched.c b/EdkModulePkg/Bus/Pci/Ehci/Dxe/EhciSched.c
index 1226d56..1a94705 100644
--- a/EdkModulePkg/Bus/Pci/Ehci/Dxe/EhciSched.c
+++ b/EdkModulePkg/Bus/Pci/Ehci/Dxe/EhciSched.c
@@ -2997,6 +2997,7 @@ Returns:
   UINT32              TransferResult;
   UINT8               *ReceiveBuffer;
   UINT8               *ProcessBuffer;
+  EHCI_ASYNC_REQUEST  *NextPtr;
 
   Status          = EFI_SUCCESS;
   QtdHwPtr        = NULL;
@@ -3042,6 +3043,8 @@ Returns:
 
     UpdateAsyncRequestTransfer (AsyncRequestPtr, TransferResult, ErrQtdPos);
 
+    NextPtr = AsyncRequestPtr->Next;
+
     if (EFI_USB_NOERROR == TransferResult) {
 
       if (AsyncRequestPtr->CallBackFunc != NULL) {
@@ -3069,8 +3072,7 @@ Returns:
       gBS->FreePool (ProcessBuffer);
     }
 
-    AsyncRequestPtr = AsyncRequestPtr->Next;
-
+    AsyncRequestPtr = NextPtr;
   }
 
 exit:
-- 
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