diff options
| author | Aya Levin <ayal@nvidia.com> | 2021-04-21 14:26:31 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-03 09:00:36 +0200 |
| commit | bbd00c4d50db3558c01b008a98f994063d5c9c4e (patch) | |
| tree | d9ff1f23c1c44ea8d9d2ce804a4c66596af9e41b | |
| parent | 02a8da446b498f2fa4adf61209c1c666d825b7aa (diff) | |
net/mlx5e: Fix error path of updating netdev queues
commit 5e7923acbd86d0ff29269688d8a9c47ad091dd46 upstream.
Avoid division by zero in the error flow. In the driver TC number can be
either 1 or 8. When TC count is set to 1, driver zero netdev->num_tc.
Hence, need to convert it back from 0 to 1 in the error flow.
Fixes: fa3748775b92 ("net/mlx5e: Handle errors from netif_set_real_num_{tx,rx}_queues")
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index f99230a4f423..f18b52be32e9 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -2920,7 +2920,7 @@ static int mlx5e_update_netdev_queues(struct mlx5e_priv *priv) int err; old_num_txqs = netdev->real_num_tx_queues; - old_ntc = netdev->num_tc; + old_ntc = netdev->num_tc ? : 1; nch = priv->channels.params.num_channels; ntc = priv->channels.params.num_tc; |