forked from Minki/linux
net/mlx4_core: Make sure there are no pending async events when freeing CQ
When freeing a CQ, we need to make sure there are no asynchronous events (on the ASYNC EQ) that could relate to this CQ before freeing it. This is done by introducing synchronize_irq. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Ido Shamay <idos@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -369,6 +369,9 @@ void mlx4_cq_free(struct mlx4_dev *dev, struct mlx4_cq *cq)
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mlx4_warn(dev, "HW2SW_CQ failed (%d) for CQN %06x\n", err, cq->cqn);
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synchronize_irq(priv->eq_table.eq[MLX4_CQ_TO_EQ_VECTOR(cq->vector)].irq);
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if (priv->eq_table.eq[MLX4_CQ_TO_EQ_VECTOR(cq->vector)].irq !=
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priv->eq_table.eq[MLX4_EQ_ASYNC].irq)
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synchronize_irq(priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
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spin_lock_irq(&cq_table->lock);
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radix_tree_delete(&cq_table->tree, cq->cqn);
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