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

756db73d · Thomas Hellstrom · Dave Airlie · 1d58420b · 756db73d
Commit 756db73d authored 18 years ago by Thomas Hellstrom Committed by Dave Airlie 18 years ago
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drivers/char/drm/via_dma.c drivers/char/drm/via_dma.c +5 -0

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--- 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;