r8169: remove hardcoded PCIe registers accesses.

(cherry picked from commit 4512ff9f361a2786a18cb805d1f64b8d8719f121)
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Joe Jin <joe.jin@oracle.com>

diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index 859f5c4c23625609d8390d8f71810cbba0480ad6..fa1edbfeb9086e4174000f249dd813a5720a565f 100644 (file)
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -3821,23 +3821,21 @@ static void r8168dp_hw_jumbo_disable(struct rtl8169_private *tp)
 static void r8168e_hw_jumbo_enable(struct rtl8169_private *tp)
 {
        void __iomem *ioaddr = tp->mmio_addr;
-       struct pci_dev *pdev = tp->pci_dev;
 
        RTL_W8(MaxTxPacketSize, 0x3f);
        RTL_W8(Config3, RTL_R8(Config3) | Jumbo_En0);
        RTL_W8(Config4, RTL_R8(Config4) | 0x01);
-       pci_write_config_byte(pdev, 0x79, 0x20);
+       rtl_tx_performance_tweak(tp->pci_dev, 0x2 << MAX_READ_REQUEST_SHIFT);
 }
 
 static void r8168e_hw_jumbo_disable(struct rtl8169_private *tp)
 {
        void __iomem *ioaddr = tp->mmio_addr;
-       struct pci_dev *pdev = tp->pci_dev;
 
        RTL_W8(MaxTxPacketSize, 0x0c);
        RTL_W8(Config3, RTL_R8(Config3) & ~Jumbo_En0);
        RTL_W8(Config4, RTL_R8(Config4) & ~0x01);
-       pci_write_config_byte(pdev, 0x79, 0x50);
+       rtl_tx_performance_tweak(tp->pci_dev, 0x5 << MAX_READ_REQUEST_SHIFT);
 }
 
 static void r8168b_0_hw_jumbo_enable(struct rtl8169_private *tp)