1 files changed, 1 insertions, 18 deletions
diff --git a/xorg-server/hw/xfree86/dri2/dri2.c b/xorg-server/hw/xfree86/dri2/dri2.c
index 40963c3b0..0b047f025 100644
--- a/xorg-server/hw/xfree86/dri2/dri2.c
+++ b/xorg-server/hw/xfree86/dri2/dri2.c
@@ -99,7 +99,6 @@ typedef struct _DRI2Drawable {
     CARD64 last_swap_msc;       /* msc at completion of most recent swap */
     CARD64 last_swap_ust;       /* ust at completion of most recent swap */
     int swap_limit;             /* for N-buffering */
-    unsigned long serialNumber;
     Bool needInvalidate;
     int prime_id;
     PixmapPtr prime_slave_pixmap;
@@ -189,19 +188,6 @@ DRI2GetDrawable(DrawablePtr pDraw)
     }
 }
 
-static unsigned long
-DRI2DrawableSerial(DrawablePtr pDraw)
-{
-    ScreenPtr pScreen = pDraw->pScreen;
-    PixmapPtr pPix;
-
-    if (pDraw->type != DRAWABLE_WINDOW)
-        return pDraw->serialNumber;
-
-    pPix = pScreen->GetWindowPixmap((WindowPtr) pDraw);
-    return pPix->drawable.serialNumber;
-}
-
 static DRI2DrawablePtr
 DRI2AllocateDrawable(DrawablePtr pDraw)
 {
@@ -235,7 +221,6 @@ DRI2AllocateDrawable(DrawablePtr pDraw)
     pPriv->last_swap_msc = 0;
     pPriv->last_swap_ust = 0;
     xorg_list_init(&pPriv->reference_list);
-    pPriv->serialNumber = DRI2DrawableSerial(pDraw);
     pPriv->needInvalidate = FALSE;
     pPriv->redirectpixmap = NULL;
     pPriv->prime_slave_pixmap = NULL;
@@ -493,7 +478,6 @@ allocate_or_reuse_buffer(DrawablePtr pDraw, DRI2ScreenPtr ds,
         || attachment == DRI2BufferFrontLeft
         || !dimensions_match || (pPriv->buffers[old_buf]->format != format)) {
         *buffer = create_buffer (pDraw, attachment, format);
-        pPriv->serialNumber = DRI2DrawableSerial(pDraw);
         return TRUE;
 
     }
@@ -559,8 +543,7 @@ do_get_buffers(DrawablePtr pDraw, int *width, int *height,
     ds = DRI2GetScreen(pDraw->pScreen);
 
     dimensions_match = (pDraw->width == pPriv->width)
-        && (pDraw->height == pPriv->height)
-        && (pPriv->serialNumber == DRI2DrawableSerial(pDraw));
+        && (pDraw->height == pPriv->height);
 
     buffers = calloc((count + 1), sizeof(buffers[0]));
     if (!buffers)