diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index ce20cc90f9ef..a1e6e560fde8 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -19,16 +19,7 @@
 #include <net/switchdev.h>
 
 #include "ksz_priv.h"
-
-void ksz_port_cleanup(struct ksz_device *dev, int port)
-{
-	/* Common code for port cleanup. */
-	mutex_lock(&dev->dev_mutex);
-	dev->on_ports &= ~(1 << port);
-	dev->live_ports &= ~(1 << port);
-	mutex_unlock(&dev->dev_mutex);
-}
-EXPORT_SYMBOL_GPL(ksz_port_cleanup);
+#include "ksz_common.h"
 
 void ksz_update_port_member(struct ksz_device *dev, int port)
 {
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index 84fed4a2578b..9f9ff0fb3b53 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -9,7 +9,6 @@
 
 #include <linux/regmap.h>
 
-void ksz_port_cleanup(struct ksz_device *dev, int port);
 void ksz_update_port_member(struct ksz_device *dev, int port);
 void ksz_init_mib_timer(struct ksz_device *dev);