[PATCH 03/17] drm/i915 disallow physical batchbuffers for KMS

[Daniel Vetter <daniel.vetter@ffwll.ch>]

Even the horrible gen3 XvMC code has learned to do this
right by the time xf86-video-intel releases learned to do
kernel modesetting. So we can just disallow this.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/i915/i915_gem.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index f06316f..97d2276 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3605,8 +3605,9 @@ int i915_gem_init(struct drm_device *dev)
 		return ret;
 	}
 
-	/* Allow hardware batchbuffers unless told otherwise. */
-	dev_priv->dri1.allow_batchbuffer = 1;
+	/* Allow hardware batchbuffers unless told otherwise, but not for KMS. */
+	if (!drm_core_check_feature(dev, DRIVER_MODESET))
+		dev_priv->dri1.allow_batchbuffer = 1;
 	return 0;
 }
 
-- 
1.7.7.6