From 82fba7697fbbb6f66cc22424ba99755b99ff482e Mon Sep 17 00:00:00 2001
From: Maarten Maathuis <madman2003@gmail.com>
Date: Mon, 22 Dec 2008 00:33:55 +0100
Subject: [PATCH] xfree86/randr: Avoid a crash when xf86CrtcConfigPrivateIndex
 is -1.

---
 hw/xfree86/modes/xf86Crtc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/xfree86/modes/xf86Crtc.c b/hw/xfree86/modes/xf86Crtc.c
index 309eb99a5..fdbd38577 100644
--- a/hw/xfree86/modes/xf86Crtc.c
+++ b/hw/xfree86/modes/xf86Crtc.c
@@ -3152,7 +3152,7 @@ xf86_crtc_supports_gamma(ScrnInfoPtr pScrn)
     xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(pScrn);
     xf86CrtcPtr crtc;
 
-    if (!xf86_config)
+    if ((xf86CrtcConfigPrivateIndex == -1) || !xf86_config)
 	return FALSE;
 
     if (xf86_config->num_crtc == 0)