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igc: Complete to commit Add legacy power management support

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commit 9513d2a5dc ("igc: Add legacy power management support")
Add power management resume and schedule suspend requests.
Add power management get and put synchronization.

Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Sasha Neftin 2020-01-13 15:33:59 +02:00 committed by Jeff Kirsher
parent 38db952b27
commit 8594a7f384
1 changed files with 27 additions and 0 deletions
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27
drivers/net/ethernet/intel/igc/igc_main.c
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@ -4029,6 +4029,9 @@ static void igc_watchdog_task(struct work_struct *work)
}
}
if (link) {
/* Cancel scheduled suspend requests. */
pm_runtime_resume(netdev->dev.parent);
if (!netif_carrier_ok(netdev)) {
u32 ctrl;
@ -4114,6 +4117,8 @@ no_wait:
return;
}
}
pm_schedule_suspend(netdev->dev.parent,
MSEC_PER_SEC * 5);
/* also check for alternate media here */
} else if (!netif_carrier_ok(netdev) &&
@ -4337,6 +4342,7 @@ request_done:
static int __igc_open(struct net_device *netdev, bool resuming)
{
struct igc_adapter *adapter = netdev_priv(netdev);
struct pci_dev *pdev = adapter->pdev;
struct igc_hw *hw = &adapter->hw;
int err = 0;
int i = 0;
@ -4348,6 +4354,9 @@ static int __igc_open(struct net_device *netdev, bool resuming)
return -EBUSY;
}
if (!resuming)
pm_runtime_get_sync(&pdev->dev);
netif_carrier_off(netdev);
/* allocate transmit descriptors */
@ -4386,6 +4395,9 @@ static int __igc_open(struct net_device *netdev, bool resuming)
rd32(IGC_ICR);
igc_irq_enable(adapter);
if (!resuming)
pm_runtime_put(&pdev->dev);
netif_tx_start_all_queues(netdev);
/* start the watchdog. */
@ -4404,6 +4416,8 @@ err_setup_rx:
igc_free_all_tx_resources(adapter);
err_setup_tx:
igc_reset(adapter);
if (!resuming)
pm_runtime_put(&pdev->dev);
return err;
}
@ -4428,9 +4442,13 @@ static int igc_open(struct net_device *netdev)
static int __igc_close(struct net_device *netdev, bool suspending)
{
struct igc_adapter *adapter = netdev_priv(netdev);
struct pci_dev *pdev = adapter->pdev;
WARN_ON(test_bit(__IGC_RESETTING, &adapter->state));
if (!suspending)
pm_runtime_get_sync(&pdev->dev);
igc_down(adapter);
igc_release_hw_control(adapter);
@ -4440,6 +4458,9 @@ static int __igc_close(struct net_device *netdev, bool suspending)
igc_free_all_tx_resources(adapter);
igc_free_all_rx_resources(adapter);
if (!suspending)
pm_runtime_put_sync(&pdev->dev);
return 0;
}
@ -4792,6 +4813,10 @@ static int igc_probe(struct pci_dev *pdev,
pcie_print_link_status(pdev);
netdev_info(netdev, "MAC: %pM\n", netdev->dev_addr);
dev_pm_set_driver_flags(&pdev->dev, DPM_FLAG_NEVER_SKIP);
pm_runtime_put_noidle(&pdev->dev);
return 0;
err_register:
@ -4826,6 +4851,8 @@ static void igc_remove(struct pci_dev *pdev)
struct net_device *netdev = pci_get_drvdata(pdev);
struct igc_adapter *adapter = netdev_priv(netdev);
pm_runtime_get_noresume(&pdev->dev);
igc_ptp_stop(adapter);
set_bit(__IGC_DOWN, &adapter->state);