mlx4_en: nullify cq->vector field when closing completion queue

Yevgeny Petrilin · davem330 · commit cd3109d23c32 · 2011-12-30T17:15:41.000-05:00
Caused loss of connectivity when changing ring size.

Signed-off-by: Yevgeny Petrilin &lt;yevgenyp@mellanox.co.il&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_cq.c b/drivers/net/ethernet/mellanox/mlx4/en_cq.c
@@ -147,6 +147,7 @@ void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
 	mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size);
 	if (priv->mdev->dev->caps.comp_pool && cq->vector)
 		mlx4_release_eq(priv->mdev->dev, cq->vector);
+	cq->vector = 0;
 	cq->buf_size = 0;
 	cq->buf = NULL;
 }

Original file line number	Diff line number	Diff line change
`@@ -147,6 +147,7 @@ void mlx4_en_destroy_cq(struct mlx4_en_priv priv, struct mlx4_en_cq cq)`
`147`	`147`	`mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size);`
`148`	`148`	`if (priv->mdev->dev->caps.comp_pool && cq->vector)`
`149`	`149`	`mlx4_release_eq(priv->mdev->dev, cq->vector);`
	`150`	`+ cq->vector = 0;`
`150`	`151`	`cq->buf_size = 0;`
`151`	`152`	`cq->buf = NULL;`
`152`	`153`	`}`