drm/i915: s/_TRANSA_CHICKEN/TRANS_CHICKEN(PIPE_A)/

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 9643a7c..cb409c2 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -6640,8 +6640,8 @@
 			   PCH_LP_PARTITION_LEVEL_DISABLE);
 
 	/* WADPOClockGatingDisable:hsw */
-	I915_WRITE(_TRANSA_CHICKEN1,
-		   I915_READ(_TRANSA_CHICKEN1) |
+	I915_WRITE(TRANS_CHICKEN1(PIPE_A),
+		   I915_READ(TRANS_CHICKEN1(PIPE_A)) |
 		   TRANS_CHICKEN1_DP0UNIT_GC_DISABLE);
 }