[PATCH 15/16] wb
Chris Wilson
chris at chris-wilson.co.uk
Sat Aug 24 08:31:20 UTC 2019
---
drivers/gpu/drm/i915/gt/intel_ringbuffer.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/i915/gt/intel_ringbuffer.c b/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
index 601c16239fdf..4df65773f5de 100644
--- a/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
@@ -930,6 +930,7 @@ static void cancel_requests(struct intel_engine_cs *engine)
static void i9xx_submit_request(struct i915_request *request)
{
i915_request_submit(request);
+ wmb();
ENGINE_WRITE(request->engine, RING_TAIL,
intel_ring_set_tail(request->ring, request->tail));
--
2.23.0
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