From: Matan Barak <mat...@mellanox.com>
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 <mat...@mellanox.com>
Signed-off-by: Ido Shamay <i...@mellanox.com>
Signed-off-by: Or Gerlitz <ogerl...@mellanox.com>
---
drivers/net/ethernet/mellanox/mlx4/cq.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/cq.c
b/drivers/net/ethernet/mellanox/mlx4/cq.c
index 7431cd4..1fc1dc5 100644
--- a/drivers/net/ethernet/mellanox/mlx4/cq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/cq.c
@@ -369,6 +369,10 @@ void mlx4_cq_free(struct mlx4_dev *dev, struct mlx4_cq *cq)
mlx4_warn(dev, "HW2SW_CQ failed (%d) for CQN %06x\n", err,
cq->cqn);
synchronize_irq(priv->eq_table.eq[MLX4_CQ_TO_EQ_VECTOR(cq->vector)].irq);
+ if (priv->eq_table.eq[MLX4_CQ_TO_EQ_VECTOR(cq->vector)].irq !=
+ priv->eq_table.eq[MLX4_EQ_ASYNC].irq)
+ synchronize_irq(priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
+
spin_lock_irq(&cq_table->lock);
radix_tree_delete(&cq_table->tree, cq->cqn);
--
1.7.1
--
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