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
spin_unlock(&request->timeline->lock);
}
+static u32 next_global_seqno(struct i915_timeline *tl)
+{
+ if (!++tl->seqno)
+ ++tl->seqno;
+ return tl->seqno;
+}
+
void __i915_request_submit(struct i915_request *request)
{
struct intel_engine_cs *engine = request->engine;
GEM_BUG_ON(request->global_seqno);
- seqno = timeline_get_seqno(&engine->timeline);
+ seqno = next_global_seqno(&engine->timeline);
GEM_BUG_ON(!seqno);
GEM_BUG_ON(intel_engine_signaled(engine, seqno));