From bcd09ff6eb76bc4df046ece4da29b1455fed8dff Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Thu, 17 Jul 2014 15:23:46 +0100
Subject: [PATCH] sna: Assert that we never attempt to flip the slave scanout

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 src/sna/sna_display.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/sna/sna_display.c b/src/sna/sna_display.c
index 584cb0d1..072a2851 100644
--- a/src/sna/sna_display.c
+++ b/src/sna/sna_display.c
@@ -4924,6 +4924,7 @@ sna_page_flip(struct sna *sna,
 		if (crtc->bo == NULL)
 			continue;
 		assert(!crtc->transform);
+		assert(!crtc->slave_pixmap);
 		assert(crtc->bo->active_scanout);
 		assert(crtc->bo->refcnt >= crtc->bo->active_scanout);
 		assert(crtc->flip_bo == NULL);