EGLuint64KHR *sbc)
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
+   if (!dri2_dpy->vtbl->get_sync_values)
+      return EGL_FALSE;
    return dri2_dpy->vtbl->get_sync_values(disp, surf, ust, msc, sbc);
 }
 
 
    struct wl_buffer* (*create_wayland_buffer_from_image)(
                         _EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img);
 
+   /* optional */
    EGLBoolean (*get_sync_values)(_EGLDisplay *display, _EGLSurface *surface,
                                  EGLuint64KHR *ust, EGLuint64KHR *msc,
                                  EGLuint64KHR *sbc);
 
 #include "eglcurrent.h"
 #include "egltypedefs.h"
 
-static inline EGLBoolean
-dri2_fallback_get_sync_values(_EGLDisplay *disp, _EGLSurface *surf,
-                              EGLuint64KHR *ust, EGLuint64KHR *msc,
-                              EGLuint64KHR *sbc)
-{
-   return EGL_FALSE;
-}
-
 #endif /* EGL_DRI2_FALLBACKS_INCLUDED */
 
    .swap_interval = droid_swap_interval,
    .query_buffer_age = droid_query_buffer_age,
    .query_surface = droid_query_surface,
-   .get_sync_values = dri2_fallback_get_sync_values,
    .get_dri_drawable = dri2_surface_get_dri_drawable,
    .set_shared_buffer_mode = droid_set_shared_buffer_mode,
 };
 
    .create_pbuffer_surface = dri2_device_create_pbuffer_surface,
    .destroy_surface = device_destroy_surface,
    .create_image = dri2_create_image_khr,
-   .get_sync_values = dri2_fallback_get_sync_values,
    .get_dri_drawable = dri2_surface_get_dri_drawable,
 };
 
 
    .create_image = dri2_drm_create_image_khr,
    .swap_buffers = dri2_drm_swap_buffers,
    .query_buffer_age = dri2_drm_query_buffer_age,
-   .get_sync_values = dri2_fallback_get_sync_values,
    .get_dri_drawable = dri2_surface_get_dri_drawable,
 };
 
 
    .create_pbuffer_surface = dri2_surfaceless_create_pbuffer_surface,
    .destroy_surface = surfaceless_destroy_surface,
    .create_image = dri2_create_image_khr,
-   .get_sync_values = dri2_fallback_get_sync_values,
    .get_dri_drawable = dri2_surface_get_dri_drawable,
 };
 
 
    .swap_buffers_with_damage = dri2_wl_swap_buffers_with_damage,
    .query_buffer_age = dri2_wl_query_buffer_age,
    .create_wayland_buffer_from_image = dri2_wl_create_wayland_buffer_from_image,
-   .get_sync_values = dri2_fallback_get_sync_values,
    .get_dri_drawable = dri2_surface_get_dri_drawable,
 };
 
    .destroy_surface = dri2_wl_destroy_surface,
    .create_image = dri2_create_image_khr,
    .swap_buffers = dri2_wl_swrast_swap_buffers,
-   .get_sync_values = dri2_fallback_get_sync_values,
    .get_dri_drawable = dri2_surface_get_dri_drawable,
 };
 
 
    .swap_buffers = dri2_x11_swap_buffers,
    /* XXX: should really implement this since X11 has pixmaps */
    .query_surface = dri2_query_surface,
-   .get_sync_values = dri2_fallback_get_sync_values,
    .get_dri_drawable = dri2_surface_get_dri_drawable,
 };