1 files changed, 10 insertions, 1 deletions
diff --git a/MdeModulePkg/Library/GenericBdsLib/BdsConsole.c b/MdeModulePkg/Library/GenericBdsLib/BdsConsole.c
index bd55156169..9f77553ec2 100644
--- a/MdeModulePkg/Library/GenericBdsLib/BdsConsole.c
+++ b/MdeModulePkg/Library/GenericBdsLib/BdsConsole.c
@@ -14,6 +14,15 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 #include "InternalBdsLib.h"
 
+/**
+  Check if we need to save the EFI variable with "ConVarName" as name
+  as NV type
+
+  @param ConVarName The name of the EFI variable.
+
+  @retval TRUE    Set the EFI variabel as NV type.
+  @retval FALSE   EFI variabel as NV type can be set NonNV.
+**/
 BOOLEAN
 IsNvNeed (
   IN CHAR16 *ConVarName
@@ -27,7 +36,7 @@ IsNvNeed (
   // If the variable includes "Dev" at last, we consider
   // it does not support NV attribute.
   //
-  while (*Ptr) {
+  while (*Ptr != L'\0') {
     Ptr++;
   }