From 5fa80a326d9dbd79d83148768c618e2da69e98e0 Mon Sep 17 00:00:00 2001 From: Chun-Hao Lin Date: Fri, 29 Jul 2016 16:37:54 +0800 Subject: [PATCH] r8169: fix kernel log spam when set or get hardware wol setting. NIC will be put into D3 state during runtime suspend state. When set or get hardware wol setting, driver will write or read hardware registers. If we set or get hardware wol setting in runtime suspend state, because NIC will in D3 state, the hardware registers read by driver will return all 0xff. That will let driver thinking register flag is not toggled and then prints the warning message "rtl_counters_cond == 1 (loop: 1000, delay: 10)" to kernel log. For fixing this issue, add checking driver's pm runtime status in rtl8169_get_wol() and rtl8169_set_wol(). Signed-off-by: Chunhao Lin Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/r8169.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c index 0e62d74b09b3..00c387bf41b7 100644 --- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -1749,13 +1749,21 @@ static u32 __rtl8169_get_wol(struct rtl8169_private *tp) static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) { struct rtl8169_private *tp = netdev_priv(dev); + struct device *d = &tp->pci_dev->dev; + + pm_runtime_get_noresume(d); rtl_lock_work(tp); wol->supported = WAKE_ANY; - wol->wolopts = __rtl8169_get_wol(tp); + if (pm_runtime_active(d)) + wol->wolopts = __rtl8169_get_wol(tp); + else + 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) @@ -1845,6 +1853,9 @@ static void __rtl8169_set_wol(struct rtl8169_private *tp, u32 wolopts) static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) { struct rtl8169_private *tp = netdev_priv(dev); + struct device *d = &tp->pci_dev->dev; + + pm_runtime_get_noresume(d); rtl_lock_work(tp); @@ -1852,12 +1863,17 @@ static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) tp->features |= RTL_FEATURE_WOL; else tp->features &= ~RTL_FEATURE_WOL; - __rtl8169_set_wol(tp, wol->wolopts); + if (pm_runtime_active(d)) + __rtl8169_set_wol(tp, wol->wolopts); + else + tp->saved_wolopts = wol->wolopts; rtl_unlock_work(tp); device_set_wakeup_enable(&tp->pci_dev->dev, wol->wolopts); + pm_runtime_put_noidle(d); + return 0; } -- GitLab