From: Moni Shoua Date: Wed, 5 Feb 2014 13:12:59 +0000 (+0200) Subject: IB/mlx4: Move rtnl locking to the right place X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4ce5a5744a2f5479e58c6788cbe3987b8071b62e;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git IB/mlx4: Move rtnl locking to the right place On the one hand, the invocation of netdev_master_upper_dev_get() within mlx4_ib_scan_netdevs() must be done with rtnl lock held. On the other hand, it's wrong to call rtnl_lock() from within this function since it's also called by our netdev notifier callback. Therefore move the locking to mlx4_ib_add() so that both cases are covered. Signed-off-by: Moni Shoua Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier --- diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c index b99d0ecc6a89..93f492f62997 100644 --- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -1707,10 +1707,8 @@ static void mlx4_ib_scan_netdevs(struct mlx4_ib_dev *ibdev) iboe->netdevs[port - 1], port); if (iboe->netdevs[port - 1] && netif_is_bond_slave(iboe->netdevs[port - 1])) { - rtnl_lock(); iboe->masters[port - 1] = netdev_master_upper_dev_get( iboe->netdevs[port - 1]); - rtnl_unlock(); } curr_master = iboe->masters[port - 1]; @@ -2100,7 +2098,9 @@ static void *mlx4_ib_add(struct mlx4_dev *dev) } } #endif + rtnl_lock(); mlx4_ib_scan_netdevs(ibdev); + rtnl_unlock(); mlx4_ib_init_gid_table(ibdev); }