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net/mlx5: fix timestamp initialization on empty clock queue
The committing completions by clock queue might be delayed after queue initialization is done and the only Clock Queue completion entry (CQE) might keep the invalid status till the CQE first update happens. The mlx5_txpp_update_timestamp() wrongly recognized invalid status as error and reported about lost synchronization. The patch recognizes the invalid status as "not updated yet" and accurate scheduling initialization routine waits till CQE first update happens. Some collateral typos in comment are fixed as well. Fixes: 77522be ("net/mlx5: introduce clock queue service routine") Cc: stable@dpdk.org Signed-off-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
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