enhanced security check.

[mirror_edk2.git] / MdeModulePkg / Universal / SetupBrowserDxe / Presentation.c

diff --git a/MdeModulePkg/Universal/SetupBrowserDxe/Presentation.c b/MdeModulePkg/Universal/SetupBrowserDxe/Presentation.c
index a1367574b0df0c7f11957def1b57ff1c882f0675..0671558b5738e103e398f3d289b80b81cce5a19a 100644 (file)
--- a/MdeModulePkg/Universal/SetupBrowserDxe/Presentation.c
+++ b/MdeModulePkg/Universal/SetupBrowserDxe/Presentation.c
@@ -231,8 +231,8 @@ DisplayPageFrame (
            Alignment < BANNER_COLUMNS + (UINT8) LocalScreen.LeftColumn;\r
            Alignment++\r
           ) {\r
-        RowIdx = Line - (UINT8) LocalScreen.TopRow;\r
-        ColumnIdx = Alignment - (UINT8) LocalScreen.LeftColumn;\r
+        RowIdx = (UINT8) (Line - (UINT8) LocalScreen.TopRow);\r
+        ColumnIdx = (UINT8) (Alignment - (UINT8) LocalScreen.LeftColumn);\r
 \r
         ASSERT (RowIdx < BANNER_HEIGHT);\r
         ASSERT (ColumnIdx < BANNER_COLUMNS);\r