drm/i915: Fix regression in ba3d8d749b
I pulled the wrong version of the patch from Daniel Vetter which was missing the read barriers -- and the one that was causing all the trouble was from i915_gem_object_put_fence_reg(), leading to GPU hangs on gen3. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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@ -2430,7 +2430,11 @@ i915_gem_object_put_fence_reg(struct drm_gem_object *obj)
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int ret;
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ret = i915_gem_object_flush_gpu_write_domain(obj, false);
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if (ret != 0)
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if (ret)
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return ret;
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ret = i915_gem_object_wait_rendering(obj);
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if (ret)
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return ret;
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}
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