1 files changed, 16 insertions, 21 deletions

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
index b2c76a95f671..c721b171bd8d 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
@@ -112,6 +112,7 @@ struct mlxsw_thermal {
 	struct mlxsw_thermal_trip trips[MLXSW_THERMAL_NUM_TRIPS];
 	enum thermal_device_mode mode;
 	struct mlxsw_thermal_module *tz_module_arr;
+	u8 tz_module_num;
 	struct mlxsw_thermal_module *tz_gearbox_arr;
 	u8 tz_gearbox_num;
 	unsigned int tz_highest_score;
@@ -775,23 +776,10 @@ static void mlxsw_thermal_module_tz_fini(struct thermal_zone_device *tzdev)
 
 static int
 mlxsw_thermal_module_init(struct device *dev, struct mlxsw_core *core,
-			  struct mlxsw_thermal *thermal, u8 local_port)
+			  struct mlxsw_thermal *thermal, u8 module)
 {
 	struct mlxsw_thermal_module *module_tz;
-	char pmlp_pl[MLXSW_REG_PMLP_LEN];
-	u8 width, module;
-	int err;
-
-	mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
-	err = mlxsw_reg_query(core, MLXSW_REG(pmlp), pmlp_pl);
-	if (err)
-		return err;
 
-	width = mlxsw_reg_pmlp_width_get(pmlp_pl);
-	if (!width)
-		return 0;
-
-	module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0);
 	module_tz = &thermal->tz_module_arr[module];
 	/* Skip if parent is already set (case of port split). */
 	if (module_tz->parent)
@@ -819,26 +807,34 @@ static int
 mlxsw_thermal_modules_init(struct device *dev, struct mlxsw_core *core,
 			   struct mlxsw_thermal *thermal)
 {
-	unsigned int module_count = mlxsw_core_max_ports(core);
 	struct mlxsw_thermal_module *module_tz;
+	char mgpir_pl[MLXSW_REG_MGPIR_LEN];
 	int i, err;
 
 	if (!mlxsw_core_res_query_enabled(core))
 		return 0;
 
-	thermal->tz_module_arr = kcalloc(module_count,
+	mlxsw_reg_mgpir_pack(mgpir_pl);
+	err = mlxsw_reg_query(core, MLXSW_REG(mgpir), mgpir_pl);
+	if (err)
+		return err;
+
+	mlxsw_reg_mgpir_unpack(mgpir_pl, NULL, NULL, NULL,
+			       &thermal->tz_module_num);
+
+	thermal->tz_module_arr = kcalloc(thermal->tz_module_num,
 					 sizeof(*thermal->tz_module_arr),
 					 GFP_KERNEL);
 	if (!thermal->tz_module_arr)
 		return -ENOMEM;
 
-	for (i = 1; i < module_count; i++) {
+	for (i = 0; i < thermal->tz_module_num; i++) {
 		err = mlxsw_thermal_module_init(dev, core, thermal, i);
 		if (err)
 			goto err_unreg_tz_module_arr;
 	}
 
-	for (i = 0; i < module_count - 1; i++) {
+	for (i = 0; i < thermal->tz_module_num; i++) {
 		module_tz = &thermal->tz_module_arr[i];
 		if (!module_tz->parent)
 			continue;
@@ -850,7 +846,7 @@ mlxsw_thermal_modules_init(struct device *dev, struct mlxsw_core *core,
 	return 0;
 
 err_unreg_tz_module_arr:
-	for (i = module_count - 1; i >= 0; i--)
+	for (i = thermal->tz_module_num - 1; i >= 0; i--)
 		mlxsw_thermal_module_fini(&thermal->tz_module_arr[i]);
 	kfree(thermal->tz_module_arr);
 	return err;
@@ -859,13 +855,12 @@ err_unreg_tz_module_arr:
 static void
 mlxsw_thermal_modules_fini(struct mlxsw_thermal *thermal)
 {
-	unsigned int module_count = mlxsw_core_max_ports(thermal->core);
 	int i;
 
 	if (!mlxsw_core_res_query_enabled(thermal->core))
 		return;
 
-	for (i = module_count - 1; i >= 0; i--)
+	for (i = thermal->tz_module_num - 1; i >= 0; i--)
 		mlxsw_thermal_module_fini(&thermal->tz_module_arr[i]);
 	kfree(thermal->tz_module_arr);
 }