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drm/i915: Differentiate the aliasing_ppgtt with an invalid filp
Use an invalid filp so that the aliasing_ppgtt can be clearly identified. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170215084357.19977-22-chris@chris-wilson.co.uk
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@ -2380,7 +2380,7 @@ int i915_gem_init_aliasing_ppgtt(struct drm_i915_private *i915)
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struct i915_hw_ppgtt *ppgtt;
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int err;
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ppgtt = i915_ppgtt_create(i915, NULL, "[alias]");
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ppgtt = i915_ppgtt_create(i915, ERR_PTR(-EPERM), "[alias]");
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if (IS_ERR(ppgtt))
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return PTR_ERR(ppgtt);
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