[Intel-gfx] [PATCH v2 7/9] drm/i915: Reset engine->last_submitted_seqno

[Chris Wilson]

When we change the current seqno, we also need to remember to reset the
last_submitted_seqno for the engine.

Testcase: igt/gem_exec_whisper
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_ringbuffer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 0e6490074011..6b4952031e30 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -2578,6 +2578,7 @@ void intel_ring_init_seqno(struct intel_engine_cs *engine, u32 seqno)
 	       sizeof(engine->semaphore.sync_seqno));
 
 	engine->set_seqno(engine, seqno);
+	engine->last_submitted_seqno = seqno;
 
 	engine->hangcheck.seqno = seqno;
 }
-- 
2.8.0.rc3