[Intel-gfx] [PATCH 2/2] drm/i915: Don't use DRM_DEBUG_WARN_ON for ring unexpectedly not idle

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

DRM_DEBUG_WARN_ON should only be used when we are certain CI is guaranteed
to exercise a certain code path, so in case of values coming from MMIO
reads we cannot be sure CI will have all the possible SKUs and parts, or
that it will catch all possible error conditions. Use drm_warn instead.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Cc: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/i915/gt/intel_ring_submission.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
index 5423bfd301ad..f8f279a195c0 100644
--- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
@@ -117,7 +117,9 @@ static void flush_cs_tlb(struct intel_engine_cs *engine)
 		return;
 
 	/* ring should be idle before issuing a sync flush*/
-	GEM_DEBUG_WARN_ON((ENGINE_READ(engine, RING_MI_MODE) & MODE_IDLE) == 0);
+	if ((ENGINE_READ(engine, RING_MI_MODE) & MODE_IDLE) == 0)
+		drm_warn(&engine->i915->drm, "%s not idle before sync flush!\n",
+			 engine->name);
 
 	ENGINE_WRITE_FW(engine, RING_INSTPM,
 			_MASKED_BIT_ENABLE(INSTPM_TLB_INVALIDATE |
-- 
2.32.0