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Since commitfd10e2ce99("drm/i915/breadcrumbs: Ignore unsubmitted signalers"), we cancel the signaler when retiring the request and so upon wraparound, where we wait for all requests to be retired, we no longer need to spin waiting for the signaling thread to release its references to the in-flight requests, and so we can assert that the signaler is idle. References:fd10e2ce99("drm/i915/breadcrumbs: Ignore unsubmitted signalers") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180306130143.13312-1-chris@chris-wilson.co.uk