[Intel-gfx] [PATCH] drm/i915/selftests: Flush tasklet on wait_for_submit()

[Chris Wilson]

Always flush the tasklet if we have pending submissions in
wait_for_submit(), so that even if we see the HW has started before we
process its ack, when we return the execlists state is well defined.

Fixes: 06289949b8dd ("drm/i915/selftests: Check for any sign of request starting in wait_for_submit()")
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/selftest_lrc.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c
index 7b303d5fd5b8..a9c9cfb2def8 100644
--- a/drivers/gpu/drm/i915/gt/selftest_lrc.c
+++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c
@@ -77,11 +77,11 @@ static int wait_for_submit(struct intel_engine_cs *engine,
 		cond_resched();
 		intel_engine_flush_submission(engine);
 
-		if (i915_request_is_active(rq) &&
-		    !READ_ONCE(engine->execlists.pending[0])) {
-			tasklet_unlock_wait(&engine->execlists.tasklet);
+		if (READ_ONCE(engine->execlists.pending[0]))
+			continue;
+
+		if (i915_request_is_active(rq))
 			return 0;
-		}
 
 		if (i915_request_started(rq)) /* that was quick! */
 			return 0;
-- 
2.25.0