Commits
Chris Wilson committed f1e9c909479
drm/i915: Prevent use of global_seqno=0
We are not allowed to assign rq->global_seqno=0 as it has a special
meaning of "inactive" (not executing on HW).
Fixes: 6faf5916e6be ("drm/i915: Remove HW semaphores for gen7 inter-engine synchronisation")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190119143024.26971-1-chris@chris-wilson.co.uk