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realtek/8139cp: use generic power management 

compile-tested only

With legacy PM hooks, it was the responsibility
of a driver to manage PCI states and also
device's power state. The generic approach is
to let PCI core handle the work.

The suspend callback enables/disables PCI wake
on the basis of "cp->wol_enabled" variable
which is unknown to PCI core. To utilise its
need, call device_set_wakeup_enable().

Signed-off-by: Vaibhav Gupta <vaibhavgupta40@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vaibhav Gupta 2020-05-18 20:32:14 +05:30 committed by David S. Miller
parent 6ad70c7686
commit a1eae9f677
1 changed files with 8 additions and 17 deletions
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25
drivers/net/ethernet/realtek/8139cp.c
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@ -2054,10 +2054,9 @@ static void cp_remove_one (struct pci_dev *pdev)
free_netdev(dev);
}
#ifdef CONFIG_PM
static int cp_suspend (struct pci_dev *pdev, pm_message_t state)
static int __maybe_unused cp_suspend(struct device *device)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct net_device *dev = dev_get_drvdata(device);
struct cp_private *cp = netdev_priv(dev);
unsigned long flags;
@ -2075,16 +2074,14 @@ static int cp_suspend (struct pci_dev *pdev, pm_message_t state)
spin_unlock_irqrestore (&cp->lock, flags);
pci_save_state(pdev);
pci_enable_wake(pdev, pci_choose_state(pdev, state), cp->wol_enabled);
pci_set_power_state(pdev, pci_choose_state(pdev, state));
device_set_wakeup_enable(device, cp->wol_enabled);
return 0;
}
static int cp_resume (struct pci_dev *pdev)
static int __maybe_unused cp_resume(struct device *device)
{
struct net_device *dev = pci_get_drvdata (pdev);
struct net_device *dev = dev_get_drvdata(device);
struct cp_private *cp = netdev_priv(dev);
unsigned long flags;
@ -2093,10 +2090,6 @@ static int cp_resume (struct pci_dev *pdev)
netif_device_attach (dev);
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
pci_enable_wake(pdev, PCI_D0, 0);
/* FIXME: sh*t may happen if the Rx ring buffer is depleted */
cp_init_rings_index (cp);
cp_init_hw (cp);
@ -2111,7 +2104,6 @@ static int cp_resume (struct pci_dev *pdev)
return 0;
}
#endif /* CONFIG_PM */
static const struct pci_device_id cp_pci_tbl[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_REALTEK, PCI_DEVICE_ID_REALTEK_8139), },
@ -2120,15 +2112,14 @@ static const struct pci_device_id cp_pci_tbl[] = {
};
MODULE_DEVICE_TABLE(pci, cp_pci_tbl);
static SIMPLE_DEV_PM_OPS(cp_pm_ops, cp_suspend, cp_resume);
static struct pci_driver cp_driver = {
.name = DRV_NAME,
.id_table = cp_pci_tbl,
.probe = cp_init_one,
.remove = cp_remove_one,
#ifdef CONFIG_PM
.resume = cp_resume,
.suspend = cp_suspend,
#endif
.driver.pm = &cp_pm_ops,
};
module_pci_driver(cp_driver);