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path: root/drivers/gpu/drm/i810/i810_dma.c
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Diffstat (limited to 'drivers/gpu/drm/i810/i810_dma.c')
-rw-r--r--drivers/gpu/drm/i810/i810_dma.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i810/i810_dma.c b/drivers/gpu/drm/i810/i810_dma.c
index 249fdff305c6..aeace37415aa 100644
--- a/drivers/gpu/drm/i810/i810_dma.c
+++ b/drivers/gpu/drm/i810/i810_dma.c
@@ -1193,6 +1193,10 @@ static int i810_flip_bufs(struct drm_device *dev, void *data,
int i810_driver_load(struct drm_device *dev, unsigned long flags)
{
+ /* Our userspace depends upon the agp mapping support. */
+ if (!dev->agp)
+ return -EINVAL;
+
pci_set_master(dev->pdev);
return 0;