drm/i915: pending_flip_is_done is gen3, name it so

And remove the cargo-culted copy from the valleyview irq handler.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_dma.c

@@ -1109,10 +1109,6 @@ static int i915_load_modeset_init(struct drm_device *dev)
 	if (ret)
 		goto cleanup_vga_client;
 
-	/* IIR "flip pending" bit means done if this bit is set */
-	if (IS_GEN3(dev) && (I915_READ(ECOSKPD) & ECO_FLIP_DONE))
-		dev_priv->flip_pending_is_done = true;
-
 	/* Initialise stolen first so that we may reserve preallocated
 	 * objects for the BIOS to KMS transition.
 	 */

drivers/gpu/drm/i915/i915_drv.h

@@ -748,7 +748,7 @@ typedef struct drm_i915_private {
 	struct drm_crtc *plane_to_crtc_mapping[3];
 	struct drm_crtc *pipe_to_crtc_mapping[3];
 	wait_queue_head_t pending_flip_queue;
-	bool flip_pending_is_done;
+	bool gen3_flip_pending_is_done;
 
 	struct intel_pch_pll pch_plls[I915_NUM_PLLS];
 

drivers/gpu/drm/i915/i915_irq.c

@@ -541,17 +541,13 @@ static irqreturn_t valleyview_irq_handler(DRM_IRQ_ARGS)
 		if (iir & I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT) {
 			drm_handle_vblank(dev, 0);
 			vblank++;
-			if (!dev_priv->flip_pending_is_done) {
-				intel_finish_page_flip(dev, 0);
-			}
+			intel_finish_page_flip(dev, 0);
 		}
 
 		if (iir & I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT) {
 			drm_handle_vblank(dev, 1);
 			vblank++;
-			if (!dev_priv->flip_pending_is_done) {
-				intel_finish_page_flip(dev, 0);
-			}
+			intel_finish_page_flip(dev, 0);
 		}
 
 		if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
@@ -1494,13 +1490,13 @@ static irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
 
 		if (iir & I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT) {
 			intel_prepare_page_flip(dev, 0);
-			if (dev_priv->flip_pending_is_done)
+			if (dev_priv->gen3_flip_pending_is_done)
 				intel_finish_page_flip_plane(dev, 0);
 		}
 
 		if (iir & I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT) {
 			intel_prepare_page_flip(dev, 1);
-			if (dev_priv->flip_pending_is_done)
+			if (dev_priv->gen3_flip_pending_is_done)
 				intel_finish_page_flip_plane(dev, 1);
 		}
 
@@ -1508,7 +1504,7 @@ static irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
 			if (pipe_stats[pipe] & vblank_status &&
 			    drm_handle_vblank(dev, pipe)) {
 				vblank++;
-				if (!dev_priv->flip_pending_is_done) {
+				if (!dev_priv->gen3_flip_pending_is_done) {
 					i915_pageflip_stall_check(dev, pipe);
 					intel_finish_page_flip(dev, pipe);
 				}
@@ -2604,6 +2600,10 @@ void intel_irq_init(struct drm_device *dev)
 	INIT_WORK(&dev_priv->error_work, i915_error_work_func);
 	INIT_WORK(&dev_priv->rps_work, gen6_pm_rps_work);
 
+	/* IIR "flip pending" bit means done if this bit is set */
+	if (IS_GEN3(dev) && (I915_READ(ECOSKPD) & ECO_FLIP_DONE))
+		dev_priv->gen3_flip_pending_is_done = true;
+
 	dev->driver->get_vblank_counter = i915_get_vblank_counter;
 	dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
 	if (IS_G4X(dev) || IS_GEN5(dev) || IS_GEN6(dev) || IS_IVYBRIDGE(dev) ||