From 7a2505bb0f64a266002737ea8446f14cc4095a22 Mon Sep 17 00:00:00 2001
From: Shenglei Zhang <shenglei.zhang@intel.com>
Date: Wed, 9 Oct 2019 14:28:50 +0800
Subject: [PATCH] MdeModulePkg/EhciPei: Initialize the variable Map

Map is used but not Initialized.
Map is called by IoMmuMap, in which Mapping(Map) is called by IoMmu->Map.
We can not assume Map is given an initial value at any step.

Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
---
 MdeModulePkg/Bus/Pci/EhciPei/EhciUrb.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/MdeModulePkg/Bus/Pci/EhciPei/EhciUrb.c b/MdeModulePkg/Bus/Pci/EhciPei/EhciUrb.c
index 7c6a6a5f97..995ccd2463 100644
--- a/MdeModulePkg/Bus/Pci/EhciPei/EhciUrb.c
+++ b/MdeModulePkg/Bus/Pci/EhciPei/EhciUrb.c
@@ -534,6 +534,8 @@ EhcCreateUrb (
   PEI_URB                       *Urb;
   VOID                          *Map;
 
+  Map = NULL;
+
   Urb = Ehc->Urb;
   Urb->Signature  = EHC_URB_SIG;
   InitializeListHead (&Urb->UrbList);
-- 
2.39.2