---

yaml --- r: 200752 b: refs/heads/master c: 83f7fd0 h: refs/heads/master v: v3
git-mirror · Jun 19, 2010 · 4cab945 · 4cab945
1 parent 73d835c
commit 4cab945
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Showing 2 changed files with 12 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: be26a10bd10271b4a810ece2e540c0cdd77881bc
+refs/heads/master: 83f7fd055eb3f1e843803cd906179d309553967b
diff --git a/trunk/drivers/gpu/drm/i915/intel_display.c b/trunk/drivers/gpu/drm/i915/intel_display.c
@@ -4680,6 +4680,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
 	unsigned long flags;
 	int pipesrc_reg = (intel_crtc->pipe == 0) ? PIPEASRC : PIPEBSRC;
 	int ret, pipesrc;
+	u32 flip_mask;
 
 	work = kzalloc(sizeof *work, GFP_KERNEL);
 	if (work == NULL)
@@ -4733,6 +4734,16 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
 	atomic_inc(&obj_priv->pending_flip);
 	work->pending_flip_obj = obj;
 
+	if (intel_crtc->plane)
+		flip_mask = I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT;
+	else
+		flip_mask = I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT;
+
+	/* Wait for any previous flip to finish */
+	if (IS_GEN3(dev))
+		while (I915_READ(ISR) & flip_mask)
+			;
+
 	BEGIN_LP_RING(4);
 	OUT_RING(MI_DISPLAY_FLIP |
 		 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));