[Intel-gfx] [PATCH] drm/i915/execlists: Skip resetting RING_CONTEXT_STATUS_PTR

[Chris Wilson]

As we now flag when the GPU signals a context-switch and do not read the
status register before we see that signal, we do not have to ensure that
it is cleared upon reset (and can leave it to the GPU to reset it from
the power context).

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala at intel.com>
Cc: Tvrtko Ursulin <tursulin at ursulin.net>
---
 drivers/gpu/drm/i915/intel_lrc.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 0e99d53d5523..753458452997 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1317,7 +1317,6 @@ static int gen9_init_render_ring(struct intel_engine_cs *engine)
 static void reset_common_ring(struct intel_engine_cs *engine,
 			      struct drm_i915_gem_request *request)
 {
-	struct drm_i915_private *dev_priv = engine->i915;
 	struct execlist_port *port = engine->execlist_port;
 	struct intel_context *ce = &request->ctx->engine[engine->id];
 
@@ -1344,7 +1343,6 @@ static void reset_common_ring(struct intel_engine_cs *engine,
 		return;
 
 	/* Catch up with any missed context-switch interrupts */
-	I915_WRITE(RING_CONTEXT_STATUS_PTR(engine), _MASKED_FIELD(0xffff, 0));
 	if (request->ctx != port[0].request->ctx) {
 		i915_gem_request_put(port[0].request);
 		port[0] = port[1];
-- 
2.11.0