[Intel-gfx] [PATCH] drm/i915/gt: Retire unexpected starting state error dumping

[Chris Wilson]

We have not seen an occurrence of the false restart state recenty, and if
we did such an event from inside engine-reset, it would deadlock on
trying to suspend the tasklet to read the register state. Instead, we
inspect the context state before submission which will alert us to any
issues prior to execution.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin at linux.intel.com>
Cc: Andi Shyti <andi.shyti at intel.com>
---
 .../drm/i915/gt/intel_execlists_submission.c  | 20 -------------------
 1 file changed, 20 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
index e7593df6777d..30c7631323e5 100644
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@ -2742,31 +2742,11 @@ static void enable_execlists(struct intel_engine_cs *engine)
 	enable_error_interrupt(engine);
 }
 
-static bool unexpected_starting_state(struct intel_engine_cs *engine)
-{
-	bool unexpected = false;
-
-	if (ENGINE_READ_FW(engine, RING_MI_MODE) & STOP_RING) {
-		drm_dbg(&engine->i915->drm,
-			"STOP_RING still set in RING_MI_MODE\n");
-		unexpected = true;
-	}
-
-	return unexpected;
-}
-
 static int execlists_resume(struct intel_engine_cs *engine)
 {
 	intel_mocs_init_engine(engine);
-
 	intel_breadcrumbs_reset(engine->breadcrumbs);
 
-	if (GEM_SHOW_DEBUG() && unexpected_starting_state(engine)) {
-		struct drm_printer p = drm_debug_printer(__func__);
-
-		intel_engine_dump(engine, &p, NULL);
-	}
-
 	enable_execlists(engine);
 
 	return 0;
-- 
2.20.1