From dba5a68ae147d0672d4b9259f3ece37777f8b2fa Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 7 Jan 2011 11:12:05 +0000 Subject: [PATCH] forcedeth: Do not use legacy PCI power management The forcedeth driver uses the legacy PCI power management, so it has to do PCI-specific things in its ->suspend() and ->resume() callbacks and some of them are not done correctly. Convert forcedeth 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 with nVidia Corporation MCP55 Ethernet (rev a2). Signed-off-by: Rafael J. Wysocki Signed-off-by: David S. Miller --- drivers/net/forcedeth.c | 34 ++++++++++++---------------------- 1 file changed, 12 insertions(+), 22 deletions(-) diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c index cd2d72d825d..af09296ef0d 100644 --- a/drivers/net/forcedeth.c +++ b/drivers/net/forcedeth.c @@ -3949,6 +3949,7 @@ static int nv_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo) writel(flags, base + NvRegWakeUpFlags); spin_unlock_irq(&np->lock); } + device_set_wakeup_enable(&np->pci_dev->dev, np->wolenabled); return 0; } @@ -5488,14 +5489,10 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i /* set mac address */ nv_copy_mac_to_hw(dev); - /* Workaround current PCI init glitch: wakeup bits aren't - * being set from PCI PM capability. - */ - device_init_wakeup(&pci_dev->dev, 1); - /* disable WOL */ writel(0, base + NvRegWakeUpFlags); np->wolenabled = 0; + device_set_wakeup_enable(&pci_dev->dev, false); if (id->driver_data & DEV_HAS_POWER_CNTRL) { @@ -5746,8 +5743,9 @@ static void __devexit nv_remove(struct pci_dev *pci_dev) } #ifdef CONFIG_PM -static int nv_suspend(struct pci_dev *pdev, pm_message_t state) +static int nv_suspend(struct device *device) { + struct pci_dev *pdev = to_pci_dev(device); struct net_device *dev = pci_get_drvdata(pdev); struct fe_priv *np = netdev_priv(dev); u8 __iomem *base = get_hwbase(dev); @@ -5763,25 +5761,17 @@ static int nv_suspend(struct pci_dev *pdev, pm_message_t state) for (i = 0; i <= np->register_size/sizeof(u32); i++) np->saved_config_space[i] = readl(base + i*sizeof(u32)); - pci_save_state(pdev); - pci_enable_wake(pdev, pci_choose_state(pdev, state), np->wolenabled); - pci_disable_device(pdev); - pci_set_power_state(pdev, pci_choose_state(pdev, state)); return 0; } -static int nv_resume(struct pci_dev *pdev) +static int nv_resume(struct device *device) { + struct pci_dev *pdev = to_pci_dev(device); struct net_device *dev = pci_get_drvdata(pdev); struct fe_priv *np = netdev_priv(dev); u8 __iomem *base = get_hwbase(dev); int i, rc = 0; - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - /* ack any pending wake events, disable PME */ - pci_enable_wake(pdev, PCI_D0, 0); - /* restore non-pci configuration space */ for (i = 0; i <= np->register_size/sizeof(u32); i++) writel(np->saved_config_space[i], base+i*sizeof(u32)); @@ -5800,6 +5790,9 @@ static int nv_resume(struct pci_dev *pdev) return rc; } +static SIMPLE_DEV_PM_OPS(nv_pm_ops, nv_suspend, nv_resume); +#define NV_PM_OPS (&nv_pm_ops) + static void nv_shutdown(struct pci_dev *pdev) { struct net_device *dev = pci_get_drvdata(pdev); @@ -5822,15 +5815,13 @@ static void nv_shutdown(struct pci_dev *pdev) * only put the device into D3 if we really go for poweroff. */ if (system_state == SYSTEM_POWER_OFF) { - if (pci_enable_wake(pdev, PCI_D3cold, np->wolenabled)) - pci_enable_wake(pdev, PCI_D3hot, np->wolenabled); + pci_wake_from_d3(pdev, np->wolenabled); pci_set_power_state(pdev, PCI_D3hot); } } #else -#define nv_suspend NULL +#define NV_PM_OPS NULL #define nv_shutdown NULL -#define nv_resume NULL #endif /* CONFIG_PM */ static DEFINE_PCI_DEVICE_TABLE(pci_tbl) = { @@ -6002,9 +5993,8 @@ static struct pci_driver driver = { .id_table = pci_tbl, .probe = nv_probe, .remove = __devexit_p(nv_remove), - .suspend = nv_suspend, - .resume = nv_resume, .shutdown = nv_shutdown, + .driver.pm = NV_PM_OPS, }; static int __init init_nic(void) -- 2.20.1