r8169: fix driver shutdown WoL regression.

Due to commit 92fc43b4159b518f5baae57301f26d770b0834c9 ("r8169: modify the
flow of the hw reset."), rtl8169_hw_reset stomps during driver shutdown on
RxConfig bits which are needed for WOL on some versions of the hardware.

As these bits were formerly set from the r81{0x, 68}_pll_power_down methods,
factor them out for use in the driver shutdown (rtl_shutdown) handler.

I favored __rtl8169_get_wol() -hardware state indication- over
RTL_FEATURE_WOL as the latter has become a good candidate for removal.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Hayes <hayeswang@realtek.com>
Tested-by: Marc Ballarin <ballarin.marc@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index c23667017922057bf5d19c4d20fb1543e439f2dc..24219ec0de1321e92c95cbb2561fba1081ac936a 100644 (file)
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -3316,6 +3316,37 @@ static void __devinit rtl_init_mdio_ops(struct rtl8169_private *tp)
        }
 }
 
+static void rtl_wol_suspend_quirk(struct rtl8169_private *tp)
+{
+       void __iomem *ioaddr = tp->mmio_addr;
+
+       switch (tp->mac_version) {
+       case RTL_GIGA_MAC_VER_29:
+       case RTL_GIGA_MAC_VER_30:
+       case RTL_GIGA_MAC_VER_32:
+       case RTL_GIGA_MAC_VER_33:
+       case RTL_GIGA_MAC_VER_34:
+               RTL_W32(RxConfig, RTL_R32(RxConfig) |
+                       AcceptBroadcast | AcceptMulticast | AcceptMyPhys);
+               break;
+       default:
+               break;
+       }
+}
+
+static bool rtl_wol_pll_power_down(struct rtl8169_private *tp)
+{
+       if (!(__rtl8169_get_wol(tp) & WAKE_ANY))
+               return false;
+
+       rtl_writephy(tp, 0x1f, 0x0000);
+       rtl_writephy(tp, MII_BMCR, 0x0000);
+
+       rtl_wol_suspend_quirk(tp);
+
+       return true;
+}
+
 static void r810x_phy_power_down(struct rtl8169_private *tp)
 {
        rtl_writephy(tp, 0x1f, 0x0000);
@@ -3330,18 +3361,8 @@ static void r810x_phy_power_up(struct rtl8169_private *tp)
 
 static void r810x_pll_power_down(struct rtl8169_private *tp)
 {
-       void __iomem *ioaddr = tp->mmio_addr;
-
-       if (__rtl8169_get_wol(tp) & WAKE_ANY) {
-               rtl_writephy(tp, 0x1f, 0x0000);
-               rtl_writephy(tp, MII_BMCR, 0x0000);
-
-               if (tp->mac_version == RTL_GIGA_MAC_VER_29 ||
-                   tp->mac_version == RTL_GIGA_MAC_VER_30)
-                       RTL_W32(RxConfig, RTL_R32(RxConfig) | AcceptBroadcast |
-                               AcceptMulticast | AcceptMyPhys);
+       if (rtl_wol_pll_power_down(tp))
                return;
-       }
 
        r810x_phy_power_down(tp);
 }
@@ -3430,17 +3451,8 @@ static void r8168_pll_power_down(struct rtl8169_private *tp)
            tp->mac_version == RTL_GIGA_MAC_VER_33)
                rtl_ephy_write(ioaddr, 0x19, 0xff64);
 
-       if (__rtl8169_get_wol(tp) & WAKE_ANY) {
-               rtl_writephy(tp, 0x1f, 0x0000);
-               rtl_writephy(tp, MII_BMCR, 0x0000);
-
-               if (tp->mac_version == RTL_GIGA_MAC_VER_32 ||
-                   tp->mac_version == RTL_GIGA_MAC_VER_33 ||
-                   tp->mac_version == RTL_GIGA_MAC_VER_34)
-                       RTL_W32(RxConfig, RTL_R32(RxConfig) | AcceptBroadcast |
-                               AcceptMulticast | AcceptMyPhys);
+       if (rtl_wol_pll_power_down(tp))
                return;
-       }
 
        r8168_phy_power_down(tp);
 
@@ -5788,11 +5800,30 @@ static const struct dev_pm_ops rtl8169_pm_ops = {
 
 #endif /* !CONFIG_PM */
 
+static void rtl_wol_shutdown_quirk(struct rtl8169_private *tp)
+{
+       void __iomem *ioaddr = tp->mmio_addr;
+
+       /* WoL fails with 8168b when the receiver is disabled. */
+       switch (tp->mac_version) {
+       case RTL_GIGA_MAC_VER_11:
+       case RTL_GIGA_MAC_VER_12:
+       case RTL_GIGA_MAC_VER_17:
+               pci_clear_master(tp->pci_dev);
+
+               RTL_W8(ChipCmd, CmdRxEnb);
+               /* PCI commit */
+               RTL_R8(ChipCmd);
+               break;
+       default:
+               break;
+       }
+}
+
 static void rtl_shutdown(struct pci_dev *pdev)
 {
        struct net_device *dev = pci_get_drvdata(pdev);
        struct rtl8169_private *tp = netdev_priv(dev);
-       void __iomem *ioaddr = tp->mmio_addr;
 
        rtl8169_net_suspend(dev);
 
@@ -5806,16 +5837,9 @@ static void rtl_shutdown(struct pci_dev *pdev)
        spin_unlock_irq(&tp->lock);
 
        if (system_state == SYSTEM_POWER_OFF) {
-               /* WoL fails with 8168b when the receiver is disabled. */
-               if ((tp->mac_version == RTL_GIGA_MAC_VER_11 ||
-                    tp->mac_version == RTL_GIGA_MAC_VER_12 ||
-                    tp->mac_version == RTL_GIGA_MAC_VER_17) &&
-                   (tp->features & RTL_FEATURE_WOL)) {
-                       pci_clear_master(pdev);
-
-                       RTL_W8(ChipCmd, CmdRxEnb);
-                       /* PCI commit */
-                       RTL_R8(ChipCmd);
+               if (__rtl8169_get_wol(tp) & WAKE_ANY) {
+                       rtl_wol_suspend_quirk(tp);
+                       rtl_wol_shutdown_quirk(tp);
                }
 
                pci_wake_from_d3(pdev, true);