drm/i915: disallow gem ums init ioctl for kms
This ioctl used in a kms driver is only useful to create massive
havoc.
v2: Bail out with -ENODEV as suggested by Chris Wilson.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index b402d70..1b808d0 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -140,6 +140,9 @@
{
struct drm_i915_gem_init *args = data;
+ if (drm_core_check_feature(dev, DRIVER_MODESET))
+ return -ENODEV;
+
if (args->gtt_start >= args->gtt_end ||
(args->gtt_end | args->gtt_start) & (PAGE_SIZE - 1))
return -EINVAL;