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| author | Amit Cohen <amitc@mellanox.com> | 2019-05-29 10:59:45 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-22 08:15:21 +0200 |
| commit | fedb1b9c9191687a7ceb117b8dc444d0d321692a (patch) | |
| tree | 787f1df97b41ac69207b54eaf9778ba7633711d3 | |
| parent | 114e8135ae0031556ead1bcb67249ecb84b804de (diff) | |
| download | linux-stable-fedb1b9c9191687a7ceb117b8dc444d0d321692a.tar.gz linux-stable-fedb1b9c9191687a7ceb117b8dc444d0d321692a.tar.bz2 linux-stable-fedb1b9c9191687a7ceb117b8dc444d0d321692a.zip | |
mlxsw: spectrum: Prevent force of 56G
[ 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>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index c5b82e283d13..ff2f6b8e2fab 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -2488,6 +2488,10 @@ mlxsw_sp_port_set_link_ksettings(struct net_device *dev, mlxsw_reg_ptys_eth_unpack(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 ? mlxsw_sp_to_ptys_advert_link(cmd) : mlxsw_sp_to_ptys_speed(cmd->base.speed); |