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From:   Sasha Levin <sashal@kernel.org>
To:     stable@vger.kernel.org, linux-kernel@vger.kernel.org
Cc:     Alaa Hleihel <alaa@mellanox.com>,
        Saeed Mahameed <saeedm@mellanox.com>,
        Sasha Levin <alexander.levin@microsoft.com>
Subject: [PATCH AUTOSEL 4.18 21/58] net/mlx5: Check for SQ and not RQ state when modifying hairpin SQ
Date:   Mon,  8 Oct 2018 11:24:46 -0400
Message-Id: <20181008152523.70705-21-sashal@kernel.org>
In-Reply-To: <20181008152523.70705-1-sashal@kernel.org>
References: <20181008152523.70705-1-sashal@kernel.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

From: Alaa Hleihel <alaa@mellanox.com>

[ Upstream commit 6b359d5550a1ae7a1269c9dc1dd73dfdc4d6fe58 ]

When modifying hairpin SQ, instead of checking if the next state equals
to MLX5_SQC_STATE_RDY, we compare it against the MLX5_RQC_STATE_RDY enum
value.

The code worked since both of MLX5_RQC_STATE_RDY and MLX5_SQC_STATE_RDY
have the same value today.

This patch fixes this issue.

Fixes: 18e568c390c6 ("net/mlx5: Hairpin pair core object setup")
Change-Id: I6758aa7b4bd137966ae28206b70648c5bc223b46
Signed-off-by: Alaa Hleihel <alaa@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/transobj.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/transobj.c b/drivers/net/ethernet/mellanox/mlx5/core/transobj.c
index dae1c5c5d27c..d2f76070ea7c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/transobj.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/transobj.c
@@ -509,7 +509,7 @@ static int mlx5_hairpin_modify_sq(struct mlx5_core_dev *peer_mdev, u32 sqn,
 
 	sqc = MLX5_ADDR_OF(modify_sq_in, in, ctx);
 
-	if (next_state == MLX5_RQC_STATE_RDY) {
+	if (next_state == MLX5_SQC_STATE_RDY) {
 		MLX5_SET(sqc, sqc, hairpin_peer_rq, peer_rq);
 		MLX5_SET(sqc, sqc, hairpin_peer_vhca, peer_vhca);
 	}
-- 
2.17.1