1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 7a0c800b50ad..1adf17757cea 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -3781,12 +3781,20 @@ static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
 
 static void rtl_hw_jumbo_enable(struct rtl8169_private *tp)
 {
+        void __iomem *ioaddr = tp->mmio_addr;
+
+        RTL_W8(Cfg9346, Cfg9346_Unlock);
         rtl_generic_op(tp, tp->jumbo_ops.enable);
+        RTL_W8(Cfg9346, Cfg9346_Lock);
 }
 
 static void rtl_hw_jumbo_disable(struct rtl8169_private *tp)
 {
+        void __iomem *ioaddr = tp->mmio_addr;
+
+        RTL_W8(Cfg9346, Cfg9346_Unlock);
         rtl_generic_op(tp, tp->jumbo_ops.disable);
+        RTL_W8(Cfg9346, Cfg9346_Lock);
 }
 
 static void r8168c_hw_jumbo_enable(struct rtl8169_private *tp)