[PATCH 1/2 net-next v3.16]r8169: Disable latency timer on pci express

[Corcodel Marian]

 On pci express interface not support latency timer.

Signed-off-by: Corcodel Marian <a...@marian1000.go.ro>
---
 drivers/net/ethernet/realtek/r8169.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/realtek/r8169.c 
b/drivers/net/ethernet/realtek/r8169.c
index 61623e9..2594bbb 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -3757,8 +3757,8 @@ static void rtl8169_init_phy(struct net_device *dev, 
struct rtl8169_private *tp)
                dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
                RTL_W8(0x82, 0x01);
        }
-
-       pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
+       if (!tp->pci_dev->pcie_cap)
+               pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
 
        if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
                pci_write_config_byte(tp->pci_dev, PCI_CACHE_LINE_SIZE, 0x08);
-- 
2.1.4