[PATCH v4 7/9] net/mlx5: remove unnecessary memory barrier
From: Yongseok Koh <hidden>
Date: 2018-01-25 21:03:25
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
As rte_write64() has an IO barrier, there's no need to have a barrier before the call. Signed-off-by: Yongseok Koh <redacted> --- drivers/net/mlx5/mlx5_rxq.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index 3c716b960..ca6cd3ae6 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c@@ -517,7 +517,6 @@ mlx5_arm_cq(struct mlx5_rxq_data *rxq, int sq_n_rxq) doorbell = (uint64_t)doorbell_hi << 32; doorbell |= rxq->cqn; rxq->cq_db[MLX5_CQ_ARM_DB] = rte_cpu_to_be_32(doorbell_hi); - rte_wmb(); rte_write64(rte_cpu_to_be_64(doorbell), cq_db_reg); }
--
2.11.0