r8169: improve saved_wolopts handling

Let's make saved_wolopts a shadow copy of the WoL options. This allows
to simplify the code and get rid of calls to now unneeded function
__rtl8169_get_wol(). However don't remove __rtl8169_get_wol()
completely to be prepared for the case that we can respect BIOS WOL
settings again.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 480fb141fe62c71d55f0c8eaa8a5a7ca3756e5dc..f8a1309a6494134ad5136dd08a22f4495278033c 100644 (file)
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -1587,6 +1587,12 @@ static void rtl8169_check_link_status(struct net_device *dev,
 
 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
 
+/* Currently we only enable WoL if explicitly told by userspace to circumvent
+ * issues on certain platforms, see commit bde135a672bf ("r8169: only enable
+ * PCI wakeups when WOL is active"). Let's keep __rtl8169_get_wol() for the
+ * case that we want to respect BIOS settings again.
+ */
+#if 0
 static u32 __rtl8169_get_wol(struct rtl8169_private *tp)
 {
        u8 options;
@@ -1621,25 +1627,16 @@ static u32 __rtl8169_get_wol(struct rtl8169_private *tp)
 
        return wolopts;
 }
+#endif
 
 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 {
        struct rtl8169_private *tp = netdev_priv(dev);
-       struct device *d = tp_to_dev(tp);
-
-       pm_runtime_get_noresume(d);
 
        rtl_lock_work(tp);
-
        wol->supported = WAKE_ANY;
-       if (pm_runtime_active(d))
-               wol->wolopts = __rtl8169_get_wol(tp);
-       else
-               wol->wolopts = tp->saved_wolopts;
-
+       wol->wolopts = tp->saved_wolopts;
        rtl_unlock_work(tp);
-
-       pm_runtime_put_noidle(d);
 }
 
 static void __rtl8169_set_wol(struct rtl8169_private *tp, u32 wolopts)
@@ -1719,14 +1716,14 @@ static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 
        rtl_lock_work(tp);
 
+       tp->saved_wolopts = wol->wolopts & WAKE_ANY;
+
        if (pm_runtime_active(d))
-               __rtl8169_set_wol(tp, wol->wolopts);
-       else
-               tp->saved_wolopts = wol->wolopts;
+               __rtl8169_set_wol(tp, tp->saved_wolopts);
 
        rtl_unlock_work(tp);
 
-       device_set_wakeup_enable(d, wol->wolopts);
+       device_set_wakeup_enable(d, tp->saved_wolopts);
 
        pm_runtime_put_noidle(d);
 
@@ -4638,7 +4635,7 @@ static void rtl_wol_suspend_quirk(struct rtl8169_private *tp)
 
 static bool rtl_wol_pll_power_down(struct rtl8169_private *tp)
 {
-       if (!(__rtl8169_get_wol(tp) & WAKE_ANY))
+       if (!tp->saved_wolopts)
                return false;
 
        rtl_speed_down(tp);
@@ -7219,7 +7216,6 @@ static int rtl_open(struct net_device *dev)
 
        rtl_unlock_work(tp);
 
-       tp->saved_wolopts = 0;
        pm_runtime_put_sync(&pdev->dev);
 
        rtl8169_check_link_status(dev, tp);
@@ -7367,7 +7363,6 @@ static int rtl8169_runtime_suspend(struct device *device)
        }
 
        rtl_lock_work(tp);
-       tp->saved_wolopts = __rtl8169_get_wol(tp);
        __rtl8169_set_wol(tp, WAKE_ANY);
        rtl_unlock_work(tp);
 
@@ -7392,7 +7387,6 @@ static int rtl8169_runtime_resume(struct device *device)
 
        rtl_lock_work(tp);
        __rtl8169_set_wol(tp, tp->saved_wolopts);
-       tp->saved_wolopts = 0;
        rtl_unlock_work(tp);
 
        __rtl8169_resume(dev);
@@ -7462,7 +7456,7 @@ static void rtl_shutdown(struct pci_dev *pdev)
        rtl8169_hw_reset(tp);
 
        if (system_state == SYSTEM_POWER_OFF) {
-               if (__rtl8169_get_wol(tp) & WAKE_ANY) {
+               if (tp->saved_wolopts) {
                        rtl_wol_suspend_quirk(tp);
                        rtl_wol_shutdown_quirk(tp);
                }