1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/char/drm/radeon_cp.c b/drivers/char/drm/radeon_cp.c
index cc4942a112cb..7f949c9c9691 100644
--- a/drivers/char/drm/radeon_cp.c
+++ b/drivers/char/drm/radeon_cp.c
@@ -1332,6 +1332,14 @@ static int radeon_do_init_cp(drm_device_t * dev, drm_radeon_init_t * init)
 
         DRM_DEBUG("\n");
 
+        /* if we require new memory map but we don't have it fail */
+        if ((dev_priv->flags & CHIP_NEW_MEMMAP) && !dev_priv->new_memmap)
+        {
+                DRM_ERROR("Cannot initialise DRM on this card\nThis card requires a new X.org DDX\n");
+                radeon_do_cleanup_cp(dev);
+                return DRM_ERR(EINVAL);
+        }
+
         if (init->is_pci && (dev_priv->flags & CHIP_IS_AGP))
         {
                 DRM_DEBUG("Forcing AGP card to PCI mode\n");