From 9c7679240ad90367693a462e288308b3fdc08f26 Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Sun, 30 Mar 2008 19:05:07 -0700
Subject: [PATCH] [randr] don't try to compute crtc transform when no mode is
 set.

Dereferencing the NULL mode pointer would cause a crash. As these transform
matrices won't be used while the CRTC is disabled, just leave their values
alone.
---
 randr/rrcrtc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/randr/rrcrtc.c b/randr/rrcrtc.c
index c237f03e61..c43163706d 100644
--- a/randr/rrcrtc.c
+++ b/randr/rrcrtc.c
@@ -233,7 +233,7 @@ RRCrtcNotify (RRCrtcPtr	    crtc,
 	RRTransformCopy (&crtc->client_current_transform, transform);
 	RRCrtcChanged (crtc, TRUE);
     }
-    if (crtc->changed)
+    if (crtc->changed && mode)
     {
 	RRTransformCompute (x, y,
 			    mode->mode.width, mode->mode.height,