Fix a warning issue with ARMCC.

[mirror_edk2.git] / FatPkg / EnhancedFatDxe / ReadWrite.c

diff --git a/FatPkg/EnhancedFatDxe/ReadWrite.c b/FatPkg/EnhancedFatDxe/ReadWrite.c
index 956db27a8677d39416db30e091a8c58abbef3ef7..fb9e8026f11aeee2c629a1b86a82d5fdb2e741ba 100644 (file)
--- a/FatPkg/EnhancedFatDxe/ReadWrite.c
+++ b/FatPkg/EnhancedFatDxe/ReadWrite.c
@@ -117,7 +117,7 @@ Returns:
   //\r
   // Set the position\r
   //\r
-  if (Position == -1) {\r
+  if (Position == (UINT64)-1) {\r
     Position = OFile->FileSize;\r
   }\r
   //\r