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@xxxxxxxxxxxxxxxxxx>
---
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
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