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From:   Yang Li <yang.lee@linux.alibaba.com>
To:     davem@davemloft.net
Cc:     edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
        saeedm@nvidia.com, leon@kernel.org, simon.horman@corigine.com,
        netdev@vger.kernel.org, linux-rdma@vger.kernel.org,
        linux-kernel@vger.kernel.org, Yang Li <yang.lee@linux.alibaba.com>,
        Abaci Robot <abaci@linux.alibaba.com>
Subject: [PATCH net-next v2] net/mlx5e: Remove NULL check before dev_{put, hold}
Date:   Tue,  4 Apr 2023 10:11:02 +0800
Message-Id: <20230404021102.25122-1-yang.lee@linux.alibaba.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
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./drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c:35:2-9: WARNING: NULL check before dev_{put, hold} functions is not needed.
./drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c:734:2-9: WARNING: NULL check before dev_{put, hold} functions is not needed.
./drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c:769:2-9: WARNING: NULL check before dev_{put, hold} functions is not needed.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=4667
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
---

change in v2:
--According to Simon's suggestion, add the one in mlx5e_set_int_port_tunnel().

 .../net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c  | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c
index 20c2d2ecaf93..2cb2ba857155 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c
@@ -32,9 +32,7 @@ static int mlx5e_set_int_port_tunnel(struct mlx5e_priv *priv,
 						&attr->action, out_index);
 
 out:
-	if (route_dev)
-		dev_put(route_dev);
-
+	dev_put(route_dev);
 	return err;
 }
 
@@ -730,8 +728,7 @@ static int mlx5e_set_vf_tunnel(struct mlx5_eswitch *esw,
 	}
 
 out:
-	if (route_dev)
-		dev_put(route_dev);
+	dev_put(route_dev);
 	return err;
 }
 
@@ -765,8 +762,7 @@ static int mlx5e_update_vf_tunnel(struct mlx5_eswitch *esw,
 	mlx5e_tc_match_to_reg_mod_hdr_change(esw->dev, mod_hdr_acts, VPORT_TO_REG, act_id, data);
 
 out:
-	if (route_dev)
-		dev_put(route_dev);
+	dev_put(route_dev);
 	return err;
 }
 
-- 
2.20.1.7.g153144c