diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
index f42ea958919b..9e7f1a0188e8 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c
@@ -89,6 +89,7 @@ struct mlxsw_sp_qdisc_state {
 	 */
 	u32 future_handle;
 	bool future_fifos[IEEE_8021QAZ_MAX_TCS];
+	struct mutex lock; /* Protects qdisc state. */
 };
 
 static bool
@@ -620,8 +621,8 @@ static struct mlxsw_sp_qdisc_ops mlxsw_sp_qdisc_ops_red = {
 	.find_class = mlxsw_sp_qdisc_leaf_find_class,
 };
 
-int mlxsw_sp_setup_tc_red(struct mlxsw_sp_port *mlxsw_sp_port,
-			  struct tc_red_qopt_offload *p)
+static int __mlxsw_sp_setup_tc_red(struct mlxsw_sp_port *mlxsw_sp_port,
+				   struct tc_red_qopt_offload *p)
 {
 	struct mlxsw_sp_qdisc *mlxsw_sp_qdisc;
 
@@ -652,6 +653,18 @@ int mlxsw_sp_setup_tc_red(struct mlxsw_sp_port *mlxsw_sp_port,
 	}
 }
 
+int mlxsw_sp_setup_tc_red(struct mlxsw_sp_port *mlxsw_sp_port,
+			  struct tc_red_qopt_offload *p)
+{
+	int err;
+
+	mutex_lock(&mlxsw_sp_port->qdisc->lock);
+	err = __mlxsw_sp_setup_tc_red(mlxsw_sp_port, p);
+	mutex_unlock(&mlxsw_sp_port->qdisc->lock);
+
+	return err;
+}
+
 static void
 mlxsw_sp_setup_tc_qdisc_leaf_clean_stats(struct mlxsw_sp_port *mlxsw_sp_port,
 					 struct mlxsw_sp_qdisc *mlxsw_sp_qdisc)
@@ -814,8 +827,8 @@ static struct mlxsw_sp_qdisc_ops mlxsw_sp_qdisc_ops_tbf = {
 	.find_class = mlxsw_sp_qdisc_leaf_find_class,
 };
 
-int mlxsw_sp_setup_tc_tbf(struct mlxsw_sp_port *mlxsw_sp_port,
-			  struct tc_tbf_qopt_offload *p)
+static int __mlxsw_sp_setup_tc_tbf(struct mlxsw_sp_port *mlxsw_sp_port,
+				   struct tc_tbf_qopt_offload *p)
 {
 	struct mlxsw_sp_qdisc *mlxsw_sp_qdisc;
 
@@ -843,6 +856,18 @@ int mlxsw_sp_setup_tc_tbf(struct mlxsw_sp_port *mlxsw_sp_port,
 	}
 }
 
+int mlxsw_sp_setup_tc_tbf(struct mlxsw_sp_port *mlxsw_sp_port,
+			  struct tc_tbf_qopt_offload *p)
+{
+	int err;
+
+	mutex_lock(&mlxsw_sp_port->qdisc->lock);
+	err = __mlxsw_sp_setup_tc_tbf(mlxsw_sp_port, p);
+	mutex_unlock(&mlxsw_sp_port->qdisc->lock);
+
+	return err;
+}
+
 static int
 mlxsw_sp_qdisc_fifo_check_params(struct mlxsw_sp_port *mlxsw_sp_port,
 				 void *params)
@@ -876,20 +901,14 @@ static struct mlxsw_sp_qdisc_ops mlxsw_sp_qdisc_ops_fifo = {
 	.clean_stats = mlxsw_sp_setup_tc_qdisc_leaf_clean_stats,
 };
 
-int mlxsw_sp_setup_tc_fifo(struct mlxsw_sp_port *mlxsw_sp_port,
-			   struct tc_fifo_qopt_offload *p)
+static int __mlxsw_sp_setup_tc_fifo(struct mlxsw_sp_port *mlxsw_sp_port,
+				    struct tc_fifo_qopt_offload *p)
 {
 	struct mlxsw_sp_qdisc_state *qdisc_state = mlxsw_sp_port->qdisc;
 	struct mlxsw_sp_qdisc *mlxsw_sp_qdisc;
 	int tclass, child_index;
 	u32 parent_handle;
 
-	/* Invisible FIFOs are tracked in future_handle and future_fifos. Make
-	 * sure that not more than one qdisc is created for a port at a time.
-	 * RTNL is a simple proxy for that.
-	 */
-	ASSERT_RTNL();
-
 	mlxsw_sp_qdisc = mlxsw_sp_qdisc_find(mlxsw_sp_port, p->parent, false);
 	if (!mlxsw_sp_qdisc && p->handle == TC_H_UNSPEC) {
 		parent_handle = TC_H_MAJ(p->parent);
@@ -936,6 +955,18 @@ int mlxsw_sp_setup_tc_fifo(struct mlxsw_sp_port *mlxsw_sp_port,
 	return -EOPNOTSUPP;
 }
 
+int mlxsw_sp_setup_tc_fifo(struct mlxsw_sp_port *mlxsw_sp_port,
+			   struct tc_fifo_qopt_offload *p)
+{
+	int err;
+
+	mutex_lock(&mlxsw_sp_port->qdisc->lock);
+	err = __mlxsw_sp_setup_tc_fifo(mlxsw_sp_port, p);
+	mutex_unlock(&mlxsw_sp_port->qdisc->lock);
+
+	return err;
+}
+
 static int __mlxsw_sp_qdisc_ets_destroy(struct mlxsw_sp_port *mlxsw_sp_port,
 					struct mlxsw_sp_qdisc *mlxsw_sp_qdisc)
 {
@@ -1277,8 +1308,8 @@ mlxsw_sp_qdisc_prio_graft(struct mlxsw_sp_port *mlxsw_sp_port,
 					  p->band, p->child_handle);
 }
 
-int mlxsw_sp_setup_tc_prio(struct mlxsw_sp_port *mlxsw_sp_port,
-			   struct tc_prio_qopt_offload *p)
+static int __mlxsw_sp_setup_tc_prio(struct mlxsw_sp_port *mlxsw_sp_port,
+				    struct tc_prio_qopt_offload *p)
 {
 	struct mlxsw_sp_qdisc *mlxsw_sp_qdisc;
 
@@ -1309,8 +1340,20 @@ int mlxsw_sp_setup_tc_prio(struct mlxsw_sp_port *mlxsw_sp_port,
 	}
 }
 
-int mlxsw_sp_setup_tc_ets(struct mlxsw_sp_port *mlxsw_sp_port,
-			  struct tc_ets_qopt_offload *p)
+int mlxsw_sp_setup_tc_prio(struct mlxsw_sp_port *mlxsw_sp_port,
+			   struct tc_prio_qopt_offload *p)
+{
+	int err;
+
+	mutex_lock(&mlxsw_sp_port->qdisc->lock);
+	err = __mlxsw_sp_setup_tc_prio(mlxsw_sp_port, p);
+	mutex_unlock(&mlxsw_sp_port->qdisc->lock);
+
+	return err;
+}
+
+static int __mlxsw_sp_setup_tc_ets(struct mlxsw_sp_port *mlxsw_sp_port,
+				   struct tc_ets_qopt_offload *p)
 {
 	struct mlxsw_sp_qdisc *mlxsw_sp_qdisc;
 
@@ -1342,6 +1385,18 @@ int mlxsw_sp_setup_tc_ets(struct mlxsw_sp_port *mlxsw_sp_port,
 	}
 }
 
+int mlxsw_sp_setup_tc_ets(struct mlxsw_sp_port *mlxsw_sp_port,
+			  struct tc_ets_qopt_offload *p)
+{
+	int err;
+
+	mutex_lock(&mlxsw_sp_port->qdisc->lock);
+	err = __mlxsw_sp_setup_tc_ets(mlxsw_sp_port, p);
+	mutex_unlock(&mlxsw_sp_port->qdisc->lock);
+
+	return err;
+}
+
 struct mlxsw_sp_qevent_block {
 	struct list_head binding_list;
 	struct list_head mall_entry_list;
@@ -1877,6 +1932,7 @@ int mlxsw_sp_tc_qdisc_init(struct mlxsw_sp_port *mlxsw_sp_port)
 	if (!qdisc_state)
 		return -ENOMEM;
 
+	mutex_init(&qdisc_state->lock);
 	qdisc_state->root_qdisc.prio_bitmap = 0xff;
 	qdisc_state->root_qdisc.tclass_num = MLXSW_SP_PORT_DEFAULT_TCLASS;
 	qdisc_state->root_qdisc.qdiscs = qdisc_state->tclass_qdiscs;
@@ -1894,5 +1950,6 @@ int mlxsw_sp_tc_qdisc_init(struct mlxsw_sp_port *mlxsw_sp_port)
 
 void mlxsw_sp_tc_qdisc_fini(struct mlxsw_sp_port *mlxsw_sp_port)
 {
+	mutex_destroy(&mlxsw_sp_port->qdisc->lock);
 	kfree(mlxsw_sp_port->qdisc);
 }