diff mbox series

[SRU,A/B/linux-oem,6/7] r8169: improve runtime pm in rtl8169_check_link_status

Message ID 20180321130814.31098-7-kai.heng.feng@canonical.com
State New
Headers show
Series Fix Runtime PM for r8169 | expand

Commit Message

Kai-Heng Feng March 21, 2018, 1:08 p.m. UTC 
From: Heiner Kallweit <hkallweit1@gmail.com>

BugLink: https://bugs.launchpad.net/bugs/1757422

This patch partially reverts commit e4fbce740f07 "r8169: Fix runtime
power management" from 2010. At that time the suspend delay was 100ms
and therefore suspending happened during initial aneg. Currently
suspend delay is 5s, so suspend starts after aneg and the issue
doesn't exist any longer. On my system aneg takes almost 3s, to be on
the safe side let's increase the suspend delay to 10s.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit ef4d5fccebe9253fd2c934b7a1119c9c9f2b9306)
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
---
 drivers/net/ethernet/realtek/r8169.c | 21 ++++++---------------
 1 file changed, 6 insertions(+), 15 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 299de522f7bf..175371b43046 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -1668,33 +1668,24 @@  static void rtl_link_chg_patch(struct rtl8169_private *tp)
 	}
 }
 
-static void __rtl8169_check_link_status(struct net_device *dev,
-					struct rtl8169_private *tp,
-					void __iomem *ioaddr, bool pm)
+static void rtl8169_check_link_status(struct net_device *dev,
+				      struct rtl8169_private *tp,
+				      void __iomem *ioaddr)
 {
 	if (tp->link_ok(ioaddr)) {
 		rtl_link_chg_patch(tp);
 		/* This is to cancel a scheduled suspend if there's one. */
-		if (pm)
-			pm_request_resume(&tp->pci_dev->dev);
+		pm_request_resume(&tp->pci_dev->dev);
 		netif_carrier_on(dev);
 		if (net_ratelimit())
 			netif_info(tp, ifup, dev, "link up\n");
 	} else {
 		netif_carrier_off(dev);
 		netif_info(tp, ifdown, dev, "link down\n");
-		if (pm)
-			pm_schedule_suspend(&tp->pci_dev->dev, 5000);
+		pm_schedule_suspend(&tp->pci_dev->dev, 10000);
 	}
 }
 
-static void rtl8169_check_link_status(struct net_device *dev,
-				      struct rtl8169_private *tp,
-				      void __iomem *ioaddr)
-{
-	__rtl8169_check_link_status(dev, tp, ioaddr, false);
-}
-
 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
 
 static u32 __rtl8169_get_wol(struct rtl8169_private *tp)
@@ -7512,7 +7503,7 @@  static void rtl_slow_event_work(struct rtl8169_private *tp)
 		rtl8169_pcierr_interrupt(dev);
 
 	if (status & LinkChg)
-		__rtl8169_check_link_status(dev, tp, tp->mmio_addr, true);
+		rtl8169_check_link_status(dev, tp, tp->mmio_addr);
 
 	rtl_irq_enable_all(tp);
 }