diff options
| author | Vadim Pasternak <vadimp@nvidia.com> | 2023-09-22 19:18:36 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-10-02 08:07:12 +0100 |
| commit | c755655c3d8b2a4afe9610ec58a41c08d62c8ec0 (patch) | |
| tree | cb17723076d89f81cb89531e2eb81d5de5d7fef8 /drivers | |
| parent | fbff653a40f6a806edf54e1f5003d2c4eb510b6a (diff) | |
mlxsw: reg: Limit MTBR register payload to a single data record
The MTBR register is used to read temperatures from multiple sensors in
one transaction, but the driver only reads from a single sensor in each
transaction.
Rrestrict the payload size of the MTBR register to prevent the
transmission of redundant data to the firmware.
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core_env.c | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/reg.h | 6 |
3 files changed, 5 insertions, 5 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_env.c b/drivers/net/ethernet/mellanox/mlxsw/core_env.c index d637c0348fa1..7286f0deb5f9 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core_env.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core_env.c @@ -775,7 +775,7 @@ static int mlxsw_env_module_has_temp_sensor(struct mlxsw_core *mlxsw_core, int err; mlxsw_reg_mtbr_pack(mtbr_pl, slot_index, - MLXSW_REG_MTBR_BASE_MODULE_INDEX + module, 1); + MLXSW_REG_MTBR_BASE_MODULE_INDEX + module); err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mtbr), mtbr_pl); if (err) return err; diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c b/drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c index 0fd290d776ff..9c12e1feb643 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c @@ -293,7 +293,7 @@ static ssize_t mlxsw_hwmon_module_temp_fault_show(struct device *dev, module = mlxsw_hwmon_attr->type_index - mlxsw_hwmon_dev->sensor_count; mlxsw_reg_mtbr_pack(mtbr_pl, mlxsw_hwmon_dev->slot_index, - MLXSW_REG_MTBR_BASE_MODULE_INDEX + module, 1); + MLXSW_REG_MTBR_BASE_MODULE_INDEX + module); err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtbr), mtbr_pl); if (err) { dev_err(dev, "Failed to query module temperature sensor\n"); diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h index ae556ddd7624..9970921ceef3 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/reg.h +++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h @@ -9551,7 +9551,7 @@ MLXSW_ITEM_BIT_ARRAY(reg, mtwe, sensor_warning, 0x0, 0x10, 1); #define MLXSW_REG_MTBR_ID 0x900F #define MLXSW_REG_MTBR_BASE_LEN 0x10 /* base length, without records */ #define MLXSW_REG_MTBR_REC_LEN 0x04 /* record length */ -#define MLXSW_REG_MTBR_REC_MAX_COUNT 47 /* firmware limitation */ +#define MLXSW_REG_MTBR_REC_MAX_COUNT 1 #define MLXSW_REG_MTBR_LEN (MLXSW_REG_MTBR_BASE_LEN + \ MLXSW_REG_MTBR_REC_LEN * \ MLXSW_REG_MTBR_REC_MAX_COUNT) @@ -9597,12 +9597,12 @@ MLXSW_ITEM32_INDEXED(reg, mtbr, rec_temp, MLXSW_REG_MTBR_BASE_LEN, 0, 16, MLXSW_REG_MTBR_REC_LEN, 0x00, false); static inline void mlxsw_reg_mtbr_pack(char *payload, u8 slot_index, - u16 base_sensor_index, u8 num_rec) + u16 base_sensor_index) { MLXSW_REG_ZERO(mtbr, payload); mlxsw_reg_mtbr_slot_index_set(payload, slot_index); mlxsw_reg_mtbr_base_sensor_index_set(payload, base_sensor_index); - mlxsw_reg_mtbr_num_rec_set(payload, num_rec); + mlxsw_reg_mtbr_num_rec_set(payload, 1); } /* Error codes from temperatute reading */ |