diff --git a/drivers/staging/sm750fb/ddk750_mode.c b/drivers/staging/sm750fb/ddk750_mode.c
index 2b2f1c17989f..d425ea1bbe76 100644
--- a/drivers/staging/sm750fb/ddk750_mode.c
+++ b/drivers/staging/sm750fb/ddk750_mode.c
@@ -90,8 +90,11 @@ static int programModeRegisters(mode_parameter_t *pModeParam, pll_value_t *pll)
 				CRT_HORIZONTAL_TOTAL_DISPLAY_END_MASK));
 
 		POKE32(CRT_HORIZONTAL_SYNC,
-		FIELD_VALUE(0, CRT_HORIZONTAL_SYNC, WIDTH, pModeParam->horizontal_sync_width)
-		| FIELD_VALUE(0, CRT_HORIZONTAL_SYNC, START, pModeParam->horizontal_sync_start - 1));
+			((pModeParam->horizontal_sync_width <<
+				CRT_HORIZONTAL_SYNC_WIDTH_SHIFT) &
+				CRT_HORIZONTAL_SYNC_WIDTH_MASK) |
+			((pModeParam->horizontal_sync_start - 1) &
+				CRT_HORIZONTAL_SYNC_START_MASK));
 
 		POKE32(CRT_VERTICAL_TOTAL,
 		FIELD_VALUE(0, CRT_VERTICAL_TOTAL, TOTAL, pModeParam->vertical_total - 1)
diff --git a/drivers/staging/sm750fb/ddk750_reg.h b/drivers/staging/sm750fb/ddk750_reg.h
index 1b55a7f3677e..fc6fa2349ebc 100644
--- a/drivers/staging/sm750fb/ddk750_reg.h
+++ b/drivers/staging/sm750fb/ddk750_reg.h
@@ -1382,8 +1382,9 @@
 #define CRT_HORIZONTAL_TOTAL_DISPLAY_END_MASK         0xfff
 
 #define CRT_HORIZONTAL_SYNC                           0x080210
-#define CRT_HORIZONTAL_SYNC_WIDTH                     23:16
-#define CRT_HORIZONTAL_SYNC_START                     11:0
+#define CRT_HORIZONTAL_SYNC_WIDTH_SHIFT               16
+#define CRT_HORIZONTAL_SYNC_WIDTH_MASK                (0xff << 16)
+#define CRT_HORIZONTAL_SYNC_START_MASK                0xfff
 
 #define CRT_VERTICAL_TOTAL                            0x080214
 #define CRT_VERTICAL_TOTAL_TOTAL                      26:16