[PATCH 2/2] drm/i915/selftests: Also wait for the scratch buffer to be bound

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Since PIN_GLOBAL is no longer guaranteed to be synchronous, we must no
forget to include a wait-for-vma prior to execution.

Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/i915/gt/selftest_workarounds.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/selftest_workarounds.c b/drivers/gpu/drm/i915/gt/selftest_workarounds.c
index ac1921854cbf..5ed323254ee1 100644
--- a/drivers/gpu/drm/i915/gt/selftest_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/selftest_workarounds.c
@@ -583,6 +583,15 @@ static int check_dirty_whitelist(struct intel_context *ce)
 		if (err)
 			goto err_request;
 
+		i915_vma_lock(scratch);
+		err = i915_request_await_object(rq, scratch->obj, true);
+		if (err == 0)
+			err = i915_vma_move_to_active(scratch, rq,
+						      EXEC_OBJECT_WRITE);
+		i915_vma_unlock(scratch);
+		if (err)
+			goto err_request;
+
 		err = engine->emit_bb_start(rq,
 					    batch->node.start, PAGE_SIZE,
 					    0);
-- 
2.25.0

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