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Merge branch 'r8169-improve-runtime-pm'

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Heiner Kallweit says:

====================
r8169: improve runtime pm

On my system with two network ports I found that runtime PM didn't
suspend the unused port. Therefore I checked runtime pm in this driver
in somewhat more detail and this series improves runtime pm in general
and solves the mentioned issue.

Tested on a system with RTL8168evl (MAC version 34).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2018-01-09 12:38:57 -05:00
commit 61ad64080e
1 changed files with 17 additions and 27 deletions
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44
drivers/net/ethernet/realtek/r8169.c
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@ -1675,33 +1675,24 @@ 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_runtime_idle(&tp->pci_dev->dev);
}
}
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)
@ -7746,7 +7737,7 @@ 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);
}
@ -7959,7 +7950,7 @@ static int rtl_open(struct net_device *dev)
rtl_unlock_work(tp);
tp->saved_wolopts = 0;
pm_runtime_put_noidle(&pdev->dev);
pm_runtime_put_sync(&pdev->dev);
rtl8169_check_link_status(dev, tp, ioaddr);
out:
@ -8103,8 +8094,10 @@ static int rtl8169_runtime_suspend(struct device *device)
struct net_device *dev = pci_get_drvdata(pdev);
struct rtl8169_private *tp = netdev_priv(dev);
if (!tp->TxDescArray)
if (!tp->TxDescArray) {
rtl_pll_power_down(tp);
return 0;
}
rtl_lock_work(tp);
tp->saved_wolopts = __rtl8169_get_wol(tp);
@ -8146,9 +8139,11 @@ static int rtl8169_runtime_idle(struct device *device)
{
struct pci_dev *pdev = to_pci_dev(device);
struct net_device *dev = pci_get_drvdata(pdev);
struct rtl8169_private *tp = netdev_priv(dev);
return tp->TxDescArray ? -EBUSY : 0;
if (!netif_running(dev) || !netif_carrier_ok(dev))
pm_schedule_suspend(device, 10000);
return -EBUSY;
}
static const struct dev_pm_ops rtl8169_pm_ops = {
@ -8195,9 +8190,6 @@ static void rtl_shutdown(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct rtl8169_private *tp = netdev_priv(dev);
struct device *d = &pdev->dev;
pm_runtime_get_sync(d);
rtl8169_net_suspend(dev);
@ -8215,8 +8207,6 @@ static void rtl_shutdown(struct pci_dev *pdev)
pci_wake_from_d3(pdev, true);
pci_set_power_state(pdev, PCI_D3hot);
}
pm_runtime_put_noidle(d);
}
static void rtl_remove_one(struct pci_dev *pdev)
@ -8701,11 +8691,11 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
rtl8168_driver_start(tp);
}
if (pci_dev_run_wake(pdev))
pm_runtime_put_noidle(&pdev->dev);
netif_carrier_off(dev);
if (pci_dev_run_wake(pdev))
pm_runtime_put_sync(&pdev->dev);
return 0;
}