diff --git a/drivers/staging/sm750fb/ddk750_mode.c b/drivers/staging/sm750fb/ddk750_mode.c
index c8862e844a54..97d803df04a1 100644
--- a/drivers/staging/sm750fb/ddk750_mode.c
+++ b/drivers/staging/sm750fb/ddk750_mode.c
@@ -104,8 +104,11 @@ static int programModeRegisters(mode_parameter_t *pModeParam, pll_value_t *pll)
 				CRT_VERTICAL_TOTAL_DISPLAY_END_MASK));
 
 		POKE32(CRT_VERTICAL_SYNC,
-		FIELD_VALUE(0, CRT_VERTICAL_SYNC, HEIGHT, pModeParam->vertical_sync_height)
-		| FIELD_VALUE(0, CRT_VERTICAL_SYNC, START, pModeParam->vertical_sync_start - 1));
+			((pModeParam->vertical_sync_height <<
+				CRT_VERTICAL_SYNC_HEIGHT_SHIFT) &
+				CRT_VERTICAL_SYNC_HEIGHT_MASK) |
+			((pModeParam->vertical_sync_start - 1) &
+				CRT_VERTICAL_SYNC_START_MASK));
 
 
 		tmp = DISPLAY_CTRL_TIMING | DISPLAY_CTRL_PLANE;
diff --git a/drivers/staging/sm750fb/ddk750_reg.h b/drivers/staging/sm750fb/ddk750_reg.h
index 7b076a554a97..e0b39389331c 100644
--- a/drivers/staging/sm750fb/ddk750_reg.h
+++ b/drivers/staging/sm750fb/ddk750_reg.h
@@ -1392,8 +1392,9 @@
 #define CRT_VERTICAL_TOTAL_DISPLAY_END_MASK           (0x7ff)
 
 #define CRT_VERTICAL_SYNC                             0x080218
-#define CRT_VERTICAL_SYNC_HEIGHT                      21:16
-#define CRT_VERTICAL_SYNC_START                       10:0
+#define CRT_VERTICAL_SYNC_HEIGHT_SHIFT                16
+#define CRT_VERTICAL_SYNC_HEIGHT_MASK                 (0x3f << 16)
+#define CRT_VERTICAL_SYNC_START_MASK                  0x7ff
 
 #define CRT_SIGNATURE_ANALYZER                        0x08021C
 #define CRT_SIGNATURE_ANALYZER_STATUS                 31:16