| Message ID | 202211282000293202417@zte.com.cn (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [linux-next] RDMA/mlx4: remove NULL check before dev_{put, hold} | expand |
On Mon, Nov 28, 2022 at 08:00:29PM +0800, zhang.songyi@zte.com.cn wrote: > From: zhang songyi <zhang.songyi@zte.com.cn> > > 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> > --- > drivers/infiniband/hw/mlx4/main.c | 12 ++++-------- > 1 file changed, 4 insertions(+), 8 deletions(-) > The patch needs to be based on this repository: https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git/ branch: for-next Thanks
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