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authorzhang songyi <zhang.songyi@zte.com.cn>2022-11-29 10:54:07 +0300
committerLeon Romanovsky <leon@kernel.org>2022-11-29 12:22:12 +0300
commit2d6c66f5253e7d168a76048d18e1209c52f98a2b (patch)
tree0b1b55a8660070de7b0b6bb18d6bdc9a314d9f41 /drivers/infiniband/hw
parentea5ef136e215fdef35f14010bc51fcd6686e6922 (diff)
downloadlinux-2d6c66f5253e7d168a76048d18e1209c52f98a2b.tar.xz
RDMA/mlx4: Remove NULL check before dev_{put, hold}
The call netdev_{put, hold} of dev_{put, hold} will check NULL, so there is no need to check before using dev_{put, hold}. Fix the following coccicheck warnings: /drivers/infiniband/hw/mlx4/main.c:1311:2-10: WARNING: WARNING NULL check before dev_{put, hold} functions is not needed. /drivers/infiniband/hw/mlx4/main.c:148:2-10: WARNING: WARNING NULL check before dev_{put, hold} functions is not needed. /drivers/infiniband/hw/mlx4/main.c:1959:3-11: WARNING: WARNING NULL check before dev_{put, hold} functions is not needed. /drivers/infiniband/hw/mlx4/main.c:1962:3-10: WARNING: WARNING NULL check before dev_{put, hold} functions is not needed. Signed-off-by: zhang songyi <zhang.songyi@zte.com.cn> Link: https://lore.kernel.org/r/202211291554079687539@zte.com.cn Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'drivers/infiniband/hw')
-rw-r--r--drivers/infiniband/hw/mlx4/main.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index ba47874f90d3..dceebcd885bb 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -144,8 +144,7 @@ static struct net_device *mlx4_ib_get_netdev(struct ib_device *device,
}
}
}
- if (dev)
- dev_hold(dev);
+ dev_hold(dev);
rcu_read_unlock();
return dev;
@@ -1307,8 +1306,7 @@ int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
spin_lock_bh(&mdev->iboe.lock);
ndev = mdev->iboe.netdevs[mqp->port - 1];
- if (ndev)
- dev_hold(ndev);
+ dev_hold(ndev);
spin_unlock_bh(&mdev->iboe.lock);
if (ndev) {
@@ -1955,11 +1953,9 @@ static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
if (ge) {
spin_lock_bh(&mdev->iboe.lock);
ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
- if (ndev)
- dev_hold(ndev);
+ dev_hold(ndev);
spin_unlock_bh(&mdev->iboe.lock);
- if (ndev)
- dev_put(ndev);
+ dev_put(ndev);
list_del(&ge->list);
kfree(ge);
} else