1 files changed, 8 insertions, 3 deletions

diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
index 6405ce397baf..e851a67740f7 100644
--- a/drivers/net/bonding/bond_3ad.c
+++ b/drivers/net/bonding/bond_3ad.c
@@ -2234,20 +2234,25 @@ void bond_3ad_adapter_duplex_changed(struct slave *slave)
 
         port = &(SLAVE_AD_INFO(slave).port);
 
-        // if slave is null, the whole port is not initialized
+        /* if slave is null, the whole port is not initialized */
         if (!port->slave) {
                 pr_warning("%s: Warning: duplex changed for uninitialized port on %s\n",
                            slave->bond->dev->name, slave->dev->name);
                 return;
         }
 
+        __get_state_machine_lock(port);
+
         port->actor_admin_port_key &= ~AD_DUPLEX_KEY_BITS;
         port->actor_oper_port_key = port->actor_admin_port_key |=
                 __get_duplex(port);
         pr_debug("Port %d changed duplex\n", port->actor_port_number);
-        // there is no need to reselect a new aggregator, just signal the
-        // state machines to reinitialize
+        /* there is no need to reselect a new aggregator, just signal the
+         * state machines to reinitialize
+         */
         port->sm_vars |= AD_PORT_BEGIN;
+
+        __release_state_machine_lock(port);
 }
 
 /**