MdeModulePkg: exit pci function loops early if device is not multi-function

[mirror_edk2.git] / MdeModulePkg / Bus / Pci / PciBusDxe / PciEnumerator.c

diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumerator.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumerator.c
index 732914313607ec2d44f72e745b6a977abe206c4b..597c0834e0f50606287f15fd5c2cf8833bed160c 100644 (file)
--- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumerator.c
+++ b/MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumerator.c
@@ -2,6 +2,7 @@
   PCI eunmeration implementation on entire PCI bus system for PCI Bus module.\r
 \r
 Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>\r
+(C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>\r
 This program and the accompanying materials\r
 are licensed and made available under the terms and conditions of the BSD License\r
 which accompanies this distribution.  The full text of the license may be found at\r
@@ -407,6 +408,13 @@ PciAssignBusNumber (
                 Func\r
                 );\r
 \r
+      if (EFI_ERROR (Status) && Func == 0) {\r
+        //\r
+        // go to next device if there is no Function 0\r
+        //\r
+        break;\r
+      }\r
+\r
       if (!EFI_ERROR (Status)   &&\r
           (IS_PCI_BRIDGE (&Pci) || IS_CARDBUS_BRIDGE (&Pci))) {\r
 \r