From: Amit Cohen amitc@mellanox.com
[ Upstream commit 275e928f19117d22f6d26dee94548baf4041b773 ]
Force of 56G is not supported by hardware in Ethernet devices. This configuration fails with a bad parameter error from firmware.
Add check of this case. Instead of trying to set 56G with autoneg off, return a meaningful error.
Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC") Signed-off-by: Amit Cohen amitc@mellanox.com Acked-by: Jiri Pirko jiri@mellanox.com Signed-off-by: Ido Schimmel idosch@mellanox.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 6b8aa3761899..f4acb38569e1 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -3110,6 +3110,10 @@ mlxsw_sp_port_set_link_ksettings(struct net_device *dev, ops->reg_ptys_eth_unpack(mlxsw_sp, ptys_pl, ð_proto_cap, NULL, NULL);
autoneg = cmd->base.autoneg == AUTONEG_ENABLE; + if (!autoneg && cmd->base.speed == SPEED_56000) { + netdev_err(dev, "56G not supported with autoneg off\n"); + return -EINVAL; + } eth_proto_new = autoneg ? ops->to_ptys_advert_link(mlxsw_sp, cmd) : ops->to_ptys_speed(mlxsw_sp, cmd->base.speed);