From f3ec4f87d607f40497afdb5ac03f11e2ea253d52 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 8 Jun 2010 15:23:51 -0400 Subject: PCI: change device runtime PM settings for probe and remove This patch (as1388) changes the way the PCI core handles runtime PM settings when probing or unbinding drivers. Now the core will make sure the device is enabled for runtime PM, with a usage count >= 1, when a driver is probed. It does the same when calling a driver's remove method. If the driver wants to use runtime PM, all it has to do is call pm_runtime_pu_noidle() near the end of its probe routine (to cancel the core's usage increment) and pm_runtime_get_noresume() near the start of its remove routine (to restore the usage count). It does not need to mess around with setting the runtime state to enabled, disabled, active, or suspended. The patch updates e1000e and r8169, the only PCI drivers that already use the existing runtime PM interface. Signed-off-by: Alan Stern Acked-by: Rafael J. Wysocki Signed-off-by: Jesse Barnes --- drivers/net/e1000e/netdev.c | 16 ++++------------ 1 file changed, 4 insertions(+), 12 deletions(-) (limited to 'drivers/net/e1000e') diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c index 57a7e41da69..4afc8dd9b93 100644 --- a/drivers/net/e1000e/netdev.c +++ b/drivers/net/e1000e/netdev.c @@ -5721,11 +5721,8 @@ static int __devinit e1000_probe(struct pci_dev *pdev, e1000_print_device_info(adapter); - if (pci_dev_run_wake(pdev)) { - pm_runtime_set_active(&pdev->dev); - pm_runtime_enable(&pdev->dev); - } - pm_schedule_suspend(&pdev->dev, MSEC_PER_SEC); + if (pci_dev_run_wake(pdev)) + pm_runtime_put_noidle(&pdev->dev); return 0; @@ -5771,8 +5768,6 @@ static void __devexit e1000_remove(struct pci_dev *pdev) struct e1000_adapter *adapter = netdev_priv(netdev); bool down = test_bit(__E1000_DOWN, &adapter->state); - pm_runtime_get_sync(&pdev->dev); - /* * flush_scheduled work may reschedule our watchdog task, so * explicitly disable watchdog tasks from being rescheduled @@ -5797,11 +5792,8 @@ static void __devexit e1000_remove(struct pci_dev *pdev) clear_bit(__E1000_DOWN, &adapter->state); unregister_netdev(netdev); - if (pci_dev_run_wake(pdev)) { - pm_runtime_disable(&pdev->dev); - pm_runtime_set_suspended(&pdev->dev); - } - pm_runtime_put_noidle(&pdev->dev); + if (pci_dev_run_wake(pdev)) + pm_runtime_get_noresume(&pdev->dev); /* * Release control of h/w to f/w. If f/w is AMT enabled, this -- cgit v1.2.3-70-g09d2