[PATCH] dix: Propagate notification of FreeScratchPixmapHeader to the ddx

[Chris Wilson]

As FreeScratchPixmapHeader is called when the resource backing the
scratch pixmap becomes no longer accessible, it is vital that the ddx is
notified in order to serialise any access it has to that resource.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 dix/pixmap.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/dix/pixmap.c b/dix/pixmap.c
index cbb5e7f..76d905e 100644
--- a/dix/pixmap.c
+++ b/dix/pixmap.c
@@ -79,7 +79,9 @@ FreeScratchPixmapHeader(PixmapPtr pPixmap)
     {
 	ScreenPtr pScreen = pPixmap->drawable.pScreen;
 
+	(*pScreen->ModifyPixmapHeader)(pPixmap, -1, -1, -1, -1, -1, NULL);
 	pPixmap->devPrivate.ptr = NULL; /* lest ddx chases bad ptr */
+
 	if (pScreen->pScratchPixmap)
 	    (*pScreen->DestroyPixmap)(pPixmap);
 	else
-- 
1.7.4.1