iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mlxsw: spectrum: Prevent force of 56G

Browse Source 
[ 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>
This commit is contained in:
Amit Cohen 2019-05-29 10:59:45 +03:00 committed by Greg Kroah-Hartman
parent 1d28cf14a8
commit 7219a58c57
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
View File

@ -2044,6 +2044,10 @@ mlxsw_sp_port_set_link_ksettings(struct net_device *dev,
mlxsw_reg_ptys_unpack(ptys_pl, &eth_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);