eee_pfc *pfc,
 				    u32 *buffer_size,
 				    u8 *prio2buffer);
-#else
-static inline int
-mlx5e_port_manual_buffer_config(struct mlx5e_priv *priv,
-				u32 change, unsigned int mtu,
-				void *pfc,
-				u32 *buffer_size,
-				u8 *prio2buffer)
-{
-	return 0;
-}
-#endif
 
 int mlx5e_port_query_buffer(struct mlx5e_priv *priv,
 			    struct mlx5e_port_buffer *port_buffer);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 15eded36b872a..21bb88c5d3dce 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -49,7 +49,6 @@
 #include "en.h"
 #include "en/dim.h"
 #include "en/txrx.h"
-#include "en/port_buffer.h"
 #include "en_tc.h"
 #include "en_rep.h"
 #include "en_accel/ipsec.h"
@@ -3041,11 +3040,9 @@ int mlx5e_set_dev_port_mtu(struct mlx5e_priv *priv)
 	struct mlx5e_params *params = &priv->channels.params;
 	struct net_device *netdev = priv->netdev;
 	struct mlx5_core_dev *mdev = priv->mdev;
-	u16 mtu, prev_mtu;
+	u16 mtu;
 	int err;
 
-	mlx5e_query_mtu(mdev, params, &prev_mtu);
-
 	err = mlx5e_set_mtu(mdev, params, params->sw_mtu);
 	if (err)
 		return err;
@@ -3055,18 +3052,6 @@ int mlx5e_set_dev_port_mtu(struct mlx5e_priv *priv)
 		netdev_warn(netdev, "%s: VPort MTU %d is different than netdev mtu %d\n",
 			    __func__, mtu, params->sw_mtu);
 
-	if (mtu != prev_mtu && MLX5_BUFFER_SUPPORTED(mdev)) {
-		err = mlx5e_port_manual_buffer_config(priv, 0, mtu,
-						      NULL, NULL, NULL);
-		if (err) {
-			netdev_warn(netdev, "%s: Failed to set Xon/Xoff values with MTU %d (err %d), setting back to previous MTU %d\n",
-				    __func__, mtu, err, prev_mtu);
-
-			mlx5e_set_mtu(mdev, params, prev_mtu);
-			return err;
-		}
-	}
-
 	params->sw_mtu = mtu;
 	return 0;
 }
-- 
2.51.0[PATCH 6.17 482/563] Revert "net/mlx5e: Update and set Xon/Xoff upon MTU set"Greg Kroah-Hartman <gregkh@linuxfoundation.org> undefinedstable@vger.kernel.org undefined undefined undefined undefined undefined undefined¯rƒ–T