linux-kernel - [PATCH AUTOSEL for 4.14 51/64] IB/mlx5: Assign send CQ and recv CQ of UMR QP

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Date:   Sat, 2 Dec 2017 15:51:38 +0000
From:   alexander.levin@...izon.com
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Cc:     Majd Dibbiny <majd@...lanox.com>,
        Leon Romanovsky <leon@...nel.org>,
        "Doug Ledford" <dledford@...hat.com>, alexander.levin@...izon.com
Subject: [PATCH AUTOSEL for 4.14 51/64] IB/mlx5: Assign send CQ and recv CQ of
 UMR QP

From: Majd Dibbiny <majd@...lanox.com>

[ Upstream commit 31fde034a8bd964a5c7c1a5663fc87a913158db2 ]

The UMR's QP is created by calling mlx5_ib_create_qp directly, and
therefore the send CQ and the recv CQ on the ibqp weren't assigned.

Assign them right after calling the mlx5_ib_create_qp to assure
that any access to those pointers will work as expected and won't
crash the system as might happen as part of reset flow.

Fixes: e126ba97dba9 ("mlx5: Add driver for Mellanox Connect-IB adapters")
Signed-off-by: Majd Dibbiny <majd@...lanox.com>
Reviewed-by: Yishai Hadas <yishaih@...lanox.com>
Signed-off-by: Leon Romanovsky <leon@...nel.org>
Signed-off-by: Doug Ledford <dledford@...hat.com>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
---
 drivers/infiniband/hw/mlx5/main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 552f7bd4ecc3..5aff1e33d984 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -3097,6 +3097,8 @@ static int create_umr_res(struct mlx5_ib_dev *dev)
 	qp->real_qp    = qp;
 	qp->uobject    = NULL;
 	qp->qp_type    = MLX5_IB_QPT_REG_UMR;
+	qp->send_cq    = init_attr->send_cq;
+	qp->recv_cq    = init_attr->recv_cq;
 
 	attr->qp_state = IB_QPS_INIT;
 	attr->port_num = 1;
-- 
2.11.0