[Intel-gfx] [PATCH 2/2] drm/i915: frontbuffer invalidate at flip schedule

[Ramalingam C]

After scheduling a flip for obj, frontbuffer should be invalidated.
Hence intel_frontbuffer_invalidate is invoked at flip preparation.

Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
References: https://bugs.freedesktop.org/show_bug.cgi?id=90418
---
 drivers/gpu/drm/i915/intel_frontbuffer.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/intel_frontbuffer.c b/drivers/gpu/drm/i915/intel_frontbuffer.c
index 4cea589..07147a7 100644
--- a/drivers/gpu/drm/i915/intel_frontbuffer.c
+++ b/drivers/gpu/drm/i915/intel_frontbuffer.c
@@ -268,6 +268,7 @@ void intel_frontbuffer_flip_prepare(struct drm_device *dev,
 	dev_priv->fb_tracking.busy_bits &= ~frontbuffer_bits;
 	mutex_unlock(&dev_priv->fb_tracking.lock);
 
+	intel_frontbuffer_invalidate(dev, NULL, ORIGIN_FLIP, frontbuffer_bits);
 	intel_psr_single_frame_update(dev);
 }
 
-- 
1.7.9.5