drm/via: Disable AGP DMA for chips with the new 3D engine.

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/char/drm/via_dma.c b/drivers/char/drm/via_dma.c
index 2f72cbefc2ff..c0539c6299cf 100644
--- a/drivers/char/drm/via_dma.c
+++ b/drivers/char/drm/via_dma.c
@@ -190,6 +190,11 @@ static int via_initialize(drm_device_t * dev,
                 return DRM_ERR(EFAULT);
         }
 
+        if (dev_priv->chipset == VIA_DX9_0) {
+                DRM_ERROR("AGP DMA is not supported on this chip\n");
+                return DRM_ERR(EINVAL);
+        }
+
         dev_priv->ring.map.offset = dev->agp->base + init->offset;
         dev_priv->ring.map.size = init->size;
         dev_priv->ring.map.type = 0;