drm/i915: Catch abuse of I915_EXEC_GEN7_SOL_RESET



Currently we catch it, but silently succeed. Our userspace is
better than this.

v2: Add DRM_DEBUG (Chris)

Testcase: igt/gem_exec_params/sol-reset-*
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

parent 48e48a0b

drivers/gpu/drm/i915/i915_gem_execbuffer.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -981,8 +981,10 @@ i915_reset_gen7_sol_offsets(struct drm_device *dev,
		struct drm_i915_private *dev_priv = dev->dev_private;
		int ret, i;

		if (!IS_GEN7(dev) \|\| ring != &dev_priv->ring[RCS])
		return 0;
		if (!IS_GEN7(dev) \|\| ring != &dev_priv->ring[RCS]) {
		DRM_DEBUG("sol reset is gen7/rcs only\n");
		return -EINVAL;
		}

		ret = intel_ring_begin(ring, 4 * 3);
		if (ret)