[Intel-gfx] [PATCH 6/6] drm/i915: Cleanup properly if the implicit fence setup fails

[Chris Wilson]

Quoting Ville Syrjala (2020-01-10 18:32:28)
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> We've already pinned the vma and fence by the time we try to
> deal with implicit fencing. Properly unpin the vma and fence
> if the fence setup fails instead of just bailing straight out
> from .prepare_fb(). As can be expected
> drm_atomic_helper_prepare_planes() will not call .cleanup_fb()
> for the plane whose .prepare_fb() failed so we must do the
> cleanup ourself.
> 
> v2: Rebase
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris