drm/i915: Assume we implement WaStripsFansDisableFastClipPerformanceFix:snb

Based on the name, the workaround we implement is
WaStripsFansDisableFastClipPerformanceFix. Unfortunately there's no
description in the w/a database, so this is just a guess.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Antti Koskipää <antti.koskipaa@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 45dd23f12a6f..f4ac8f324b1c 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4695,6 +4695,7 @@ static void gen6_init_clock_gating(struct drm_device *dev)
                    GEN6_RCPBUNIT_CLOCK_GATE_DISABLE |
                    GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
 
+        /* WaStripsFansDisableFastClipPerformanceFix:snb */
         /* Bspec says we need to always set all mask bits. */
         I915_WRITE(_3D_CHICKEN3, (0xFFFF << 16) |
                    _3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL);