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mlxsw: spectrum: Allow lane to start from non-zero index

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So far, the lane index always started from zero. That is not true for
modular systems with gearbox-equipped linecards. Loose the check so the
lanes can start from non-zero index.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko
2022-04-18 09:42:29 +03:00
committed by David S. Miller
parent b837585985
commit bac62191a3
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
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@@ -486,6 +486,7 @@ mlxsw_sp_port_module_info_get(struct mlxsw_sp *mlxsw_sp, u16 local_port,
{
char pmlp_pl[MLXSW_REG_PMLP_LEN];
bool separate_rxtx;
u8 first_lane;
u8 module;
u8 width;
int err;
@@ -498,6 +499,7 @@ mlxsw_sp_port_module_info_get(struct mlxsw_sp *mlxsw_sp, u16 local_port,
module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0);
width = mlxsw_reg_pmlp_width_get(pmlp_pl);
separate_rxtx = mlxsw_reg_pmlp_rxtx_get(pmlp_pl);
first_lane = mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, 0);
if (width && !is_power_of_2(width)) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unsupported module config: width value is not power of 2\n",
@@ -518,7 +520,7 @@ mlxsw_sp_port_module_info_get(struct mlxsw_sp *mlxsw_sp, u16 local_port,
local_port);
return -EINVAL;
}
if (mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, i) != i) {
if (mlxsw_reg_pmlp_tx_lane_get(pmlp_pl, i) != i + first_lane) {
dev_err(mlxsw_sp->bus_info->dev, "Port %d: Unsupported module config: TX and RX lane numbers are not sequential\n",
local_port);
return -EINVAL;