[PATCH v1 2/2] drm/i915: Changing GEM proxy backing storage is banned with ENXIO

[Chris Wilson]

Quoting Tina Zhang (2017-10-16 09:57:34)
> GEM proxy is a kind of GEM object whose backing storage cannot be changed
> by host i915 driver. -ENXIO should be returned when operations are banned
> from changing backing storage of this kind of GEM object.
> 
> Signed-off-by: Tina Zhang <tina.zhang at intel.com>
> Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris