From f10446303ecc50c2e42e298181de0668c36d13a6 Mon Sep 17 00:00:00 2001
From: Albert Damen <albrt@gmx.net>
Date: Sun, 5 Apr 2009 16:36:35 +0200
Subject: [PATCH] Fix crash with XV with large virtual display

If a virtual display with width > 2048 is used, the first time
an XV buffer is needed will result in a BadAlloc error message,
but the next time X would crash.

diff --git a/src/i830_video.c b/src/i830_video.c
index 3f3aaac..4da2722 100644
--- a/src/i830_video.c
+++ b/src/i830_video.c
@@ -2391,6 +2391,7 @@ I830PutImage(ScrnInfoPtr pScrn,
                 return BadAlloc;
             if (!pPriv->textured && drm_intel_bo_pin(pPriv->buf, 4096) != 0) {
                 drm_intel_bo_unreference(pPriv->buf);
+                pPriv->buf = NULL;
                 xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
                            "Failed to pin xv buffer\n");
                 return BadAlloc;