[Intel-gfx] [PATCH 1/2] drm/i915: fix flip done interrupt on Ironlake

[Zhenyu Wang]

On Ironlake plane flip interrupt means flip done event already, the
behavior is not like old chips, and perform like other usual interrupt.
So only need to handle flip done event when receiving that interrupt.

Signed-off-by: Zhenyu Wang <zhenyuw at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_irq.c |   16 ++++++++--------
 1 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 50ddf4a..a17d6bd 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -309,21 +309,21 @@ irqreturn_t ironlake_irq_handler(struct drm_device *dev)
 	if (de_iir & DE_GSE)
 		ironlake_opregion_gse_intr(dev);
 
-	if (de_iir & DE_PLANEA_FLIP_DONE)
+	if (de_iir & DE_PLANEA_FLIP_DONE) {
 		intel_prepare_page_flip(dev, 0);
+		intel_finish_page_flip(dev, 0);
+	}
 
-	if (de_iir & DE_PLANEB_FLIP_DONE)
+	if (de_iir & DE_PLANEB_FLIP_DONE) {
 		intel_prepare_page_flip(dev, 1);
+		intel_finish_page_flip(dev, 1);
+	}
 
-	if (de_iir & DE_PIPEA_VBLANK) {
+	if (de_iir & DE_PIPEA_VBLANK)
 		drm_handle_vblank(dev, 0);
-		intel_finish_page_flip(dev, 0);
-	}
 
-	if (de_iir & DE_PIPEB_VBLANK) {
+	if (de_iir & DE_PIPEB_VBLANK)
 		drm_handle_vblank(dev, 1);
-		intel_finish_page_flip(dev, 1);
-	}
 
 	/* check event from PCH */
 	if ((de_iir & DE_PCH_EVENT) &&
-- 
1.6.6.1