[PATCH] modes: Update pixmapPrivate after driver->resize() calls ModifyPixmapHeader

[Chris Wilson]

As with xf86SwitchMode(), if the driver modifies the Screen pixmap header
in the course of resizing the framebuffer, this change needs to be
propagated to the ScrnInfo->pixmapPrivate or else the pixmap header will
be overwritten by xf86EnableDisableFBAccess().

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Julien Cristau <jcristau at debian.org>
Cc: Andrew Guertin <lists at dolphinling.net>
---
 hw/xfree86/modes/xf86RandR12.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/hw/xfree86/modes/xf86RandR12.c b/hw/xfree86/modes/xf86RandR12.c
index c17b5fa..b334b3c 100644
--- a/hw/xfree86/modes/xf86RandR12.c
+++ b/hw/xfree86/modes/xf86RandR12.c
@@ -728,6 +728,13 @@ xf86RandR12ScreenSetSize (ScreenPtr	pScreen,
     }
 
     pScrnPix = (*pScreen->GetScreenPixmap)(pScreen);
+    /*
+     * Get the new Screen pixmap ptr as resize() might have called
+     * ModifyPixmapHeader and xf86EnableDisableFBAccess will put it back...
+     * Unfortunately.
+     */
+    if (pScrnPix->devPrivate.ptr)
+       pScrn->pixmapPrivate = pScrnPix->devPrivate;
     pScreen->width = pScrnPix->drawable.width = width;
     pScreen->height = pScrnPix->drawable.height = height;
     randrp->mmWidth = pScreen->mmWidth = mmWidth;
-- 
1.7.1