We need to set the various ring registers prior to restarting the
engine, or else we may restart it after reset/resume in an ill-defined
state.
Reported-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_ringbuffer.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 00bd9eeb053d..3844581f622c 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -831,9 +831,6 @@ static int intel_rcs_ctx_init(struct i915_request *rq)
static int init_render_ring(struct intel_engine_cs *engine)
{
struct drm_i915_private *dev_priv = engine->i915;
- int ret = init_ring_common(engine);
- if (ret)
- return ret;
/* WaTimedSingleVertexDispatch:cl,bw,ctg,elk,ilk,snb */
if (IS_GEN_RANGE(dev_priv, 4, 6))
@@ -873,7 +870,7 @@ static int init_render_ring(struct intel_engine_cs *engine)
if (IS_GEN_RANGE(dev_priv, 6, 7))
I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_FORCE_ORDERING));
- return 0;
+ return init_ring_common(engine);
}
static void cancel_requests(struct intel_engine_cs *engine)
--
2.20.1
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