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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, 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] net/mlx5e: Remove NULL check before dev_{put, hold}
Date: Fri, 31 Mar 2023 08:57:18 +0800	[thread overview]
Message-ID: <20230331005718.50060-1-yang.lee@linux.alibaba.com> (raw)

The call netdev_{put, hold} of dev_{put, hold} will check NULL,
so there is no need to check before using dev_{put, hold},
remove it to silence the warnings:

./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>
---
 drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c | 6 ++----
 1 file changed, 2 insertions(+), 4 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..69ac30a728f4 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
@@ -730,8 +730,7 @@ 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 +764,7 @@ 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


             reply	other threads:[~2023-03-31  0:57 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-31  0:57 Yang Li [this message]
2023-03-31 15:44 ` [PATCH net-next] net/mlx5e: Remove NULL check before dev_{put, hold} Simon Horman

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