From 0f333d10e3f689640b229c8cf00b16ea51ce4951 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 26 Dec 2010 08:44:32 +0000 Subject: [PATCH] sky2: Do not use legacy PCI power management The sky2 driver uses the legacy PCI power management, so it has to do some PCI-specific things in its ->suspend() and ->resume() callbacks, which isn't necessary and should better be done by the PCI sybsystem-level power management code. Moreover, it uses device_set_wakeup_enable() incorrectly (that function should be used when the WoL setting is changed rather than during suspend). Convert sky2 to the new PCI power management framework and make it let the PCI subsystem take care of all the PCI-specific aspects of device handling during system power transitions. Tested on a desktop machine with a Marvell 88E8056 PCI-E adapter. Signed-off-by: Rafael J. Wysocki Acked-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/sky2.c | 54 ++++++++++++++++++++++++---------------------- 1 file changed, 28 insertions(+), 26 deletions(-) diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index d6577084ce70..0d4a236c3bb3 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -3398,12 +3398,24 @@ static int sky2_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) { struct sky2_port *sky2 = netdev_priv(dev); struct sky2_hw *hw = sky2->hw; + bool enable_wakeup = false; + int i; if ((wol->wolopts & ~sky2_wol_supported(sky2->hw)) || !device_can_wakeup(&hw->pdev->dev)) return -EOPNOTSUPP; sky2->wol = wol->wolopts; + + for (i = 0; i < hw->ports; i++) { + struct net_device *dev = hw->dev[i]; + struct sky2_port *sky2 = netdev_priv(dev); + + if (sky2->wol) + enable_wakeup = true; + } + device_set_wakeup_enable(&hw->pdev->dev, enable_wakeup); + return 0; } @@ -4920,10 +4932,11 @@ static void __devexit sky2_remove(struct pci_dev *pdev) pci_set_drvdata(pdev, NULL); } -static int sky2_suspend(struct pci_dev *pdev, pm_message_t state) +static int sky2_suspend(struct device *dev) { + struct pci_dev *pdev = to_pci_dev(dev); struct sky2_hw *hw = pci_get_drvdata(pdev); - int i, wol = 0; + int i; if (!hw) return 0; @@ -4940,41 +4953,24 @@ static int sky2_suspend(struct pci_dev *pdev, pm_message_t state) if (sky2->wol) sky2_wol_init(sky2); - - wol |= sky2->wol; } - device_set_wakeup_enable(&pdev->dev, wol != 0); - sky2_power_aux(hw); rtnl_unlock(); - pci_save_state(pdev); - pci_enable_wake(pdev, pci_choose_state(pdev, state), wol); - pci_set_power_state(pdev, pci_choose_state(pdev, state)); - return 0; } #ifdef CONFIG_PM -static int sky2_resume(struct pci_dev *pdev) +static int sky2_resume(struct device *dev) { + struct pci_dev *pdev = to_pci_dev(dev); struct sky2_hw *hw = pci_get_drvdata(pdev); int err; if (!hw) return 0; - err = pci_set_power_state(pdev, PCI_D0); - if (err) - goto out; - - err = pci_restore_state(pdev); - if (err) - goto out; - - pci_enable_wake(pdev, PCI_D0, 0); - /* Re-enable all clocks */ err = pci_write_config_dword(pdev, PCI_DEV_REG3, 0); if (err) { @@ -4994,11 +4990,20 @@ out: pci_disable_device(pdev); return err; } + +static SIMPLE_DEV_PM_OPS(sky2_pm_ops, sky2_suspend, sky2_resume); +#define SKY2_PM_OPS (&sky2_pm_ops) + +#else + +#define SKY2_PM_OPS NULL #endif static void sky2_shutdown(struct pci_dev *pdev) { - sky2_suspend(pdev, PMSG_SUSPEND); + sky2_suspend(&pdev->dev); + pci_wake_from_d3(pdev, device_may_wakeup(&pdev->dev)); + pci_set_power_state(pdev, PCI_D3hot); } static struct pci_driver sky2_driver = { @@ -5006,11 +5011,8 @@ static struct pci_driver sky2_driver = { .id_table = sky2_id_table, .probe = sky2_probe, .remove = __devexit_p(sky2_remove), -#ifdef CONFIG_PM - .suspend = sky2_suspend, - .resume = sky2_resume, -#endif .shutdown = sky2_shutdown, + .driver.pm = SKY2_PM_OPS, }; static int __init sky2_init_module(void) -- 2.20.1