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When decoding the semaphores inside hangcheck, we need to use the hw-id and not the local array index. Fixes:de1add3605("drm/i915: Decouple execbuf uAPI ...") Testcase: igt/gem_exec_whisper/hang # gen6-7 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: stable@vger.kernel.org Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20161003124516.12388-3-chris@chris-wilson.co.uk (cherry picked from commit348b9b1192) Signed-off-by: Jani Nikula <jani.nikula@intel.com>