PciLib:

[mirror_edk2.git] / MdePkg / Library / BasePciCf8Lib / PciLib.c

diff --git a/MdePkg/Library/BasePciCf8Lib/PciLib.c b/MdePkg/Library/BasePciCf8Lib/PciLib.c
index a3897bfaa4314941fd7bdba099b1d8dd2718b5c5..9421d8b99d3cb4ba942e8153491d08901e33265e 100644 (file)
--- a/MdePkg/Library/BasePciCf8Lib/PciLib.c
+++ b/MdePkg/Library/BasePciCf8Lib/PciLib.c
@@ -1299,11 +1299,16 @@ PciCf8ReadBuffer (
 \r
   ASSERT_INVALID_PCI_ADDRESS (StartAddress, 0);\r
   ASSERT (((StartAddress & 0xFFF) + Size) <= 0x100);\r
-  ASSERT ((Buffer != NULL) || (Size == 0));\r
+\r
+  if (Size == 0) {\r
+    return 0;\r
+  }\r
+\r
+  ASSERT (Buffer != NULL);\r
 \r
   EndAddress = StartAddress + Size;\r
 \r
-  if ((StartAddress < EndAddress) && ((StartAddress & 1) != 0)) {\r
+  if ((StartAddress & 1) != 0) {\r
     //\r
     // Read a byte if StartAddress is byte aligned\r
     //\r
@@ -1386,11 +1391,16 @@ PciCf8WriteBuffer (
 \r
   ASSERT_INVALID_PCI_ADDRESS (StartAddress, 0);\r
   ASSERT (((StartAddress & 0xFFF) + Size) <= 0x100);\r
-  ASSERT ((Buffer != NULL) || (Size == 0));\r
+\r
+  if (Size == 0) {\r
+    return 0;\r
+  }\r
+\r
+  ASSERT (Buffer != 0);\r
 \r
   EndAddress = StartAddress + Size;\r
 \r
-  if ((StartAddress < EndAddress) && ((StartAddress & 1)!= 0)) {\r
+  if ((StartAddress & 1)!= 0) {\r
     //\r
     // Write a byte if StartAddress is byte aligned\r
     //\r