linux-kernel - [PATCH] RDMA/mlx5: Remove NULL check before dev

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <ZjGC4qXrOwZE0aHi@octinomon.home>
Date: Wed, 1 May 2024 00:46:42 +0100
From: Jules Irenge <jbi.octave@...il.com>
To: leon@...nel.org
Cc: jgg@...pe.ca, linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
	lishifeng@...gfor.com.cn, gustavoars@...nel.org
Subject: [PATCH] RDMA/mlx5: Remove NULL check before dev_{put, hold}

Coccinelle reports a warning

WARNING: NULL check before dev_{put, hold} functions is not needed

The reason is the call netdev_{put, hold} of dev_{put,hold} will check NULL
There is no need to check before using dev_{put, hold}

Signed-off-by: Jules Irenge <jbi.octave@...il.com>
---
 drivers/infiniband/hw/mlx5/main.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index c2b557e64290..2366c46eebc8 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -264,8 +264,7 @@ static struct net_device *mlx5_ib_get_netdev(struct ib_device *device,
 	 */
 	read_lock(&ibdev->port[port_num - 1].roce.netdev_lock);
 	ndev = ibdev->port[port_num - 1].roce.netdev;
-	if (ndev)
-		dev_hold(ndev);
+	dev_hold(ndev);
 	read_unlock(&ibdev->port[port_num - 1].roce.netdev_lock);
 
 out:
-- 
2.43.2