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[PATCH] e100: fix reboot -f with netconsole enabled 

When rebooting with netconsole over e100, the driver shutdown code would
deadlock with netpoll.  Reduce shutdown code to a bare minimum while retaining
WoL and suspend functionality.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
hifive-unleashed-5.1
Auke Kok 2006-10-19 23:28:12 -07:00 committed by Linus Torvalds
parent ce9e3d9953
commit e8e82b76e0
1 changed files with 31 additions and 19 deletions
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50
drivers/net/e100.c
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@ -2039,7 +2039,6 @@ static int e100_change_mtu(struct net_device *netdev, int new_mtu)
return 0;
}
#ifdef CONFIG_PM
static int e100_asf(struct nic *nic)
{
/* ASF can be enabled from eeprom */
@ -2048,7 +2047,6 @@ static int e100_asf(struct nic *nic)
!(nic->eeprom[eeprom_config_asf] & eeprom_gcl) &&
((nic->eeprom[eeprom_smbus_addr] & 0xFF) != 0xFE));
}
#endif
static int e100_up(struct nic *nic)
{
@ -2715,34 +2713,32 @@ static void __devexit e100_remove(struct pci_dev *pdev)
}
}
#ifdef CONFIG_PM
static int e100_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct nic *nic = netdev_priv(netdev);
if (netif_running(netdev))
e100_down(nic);
e100_hw_reset(nic);
netif_device_detach(netdev);
netif_poll_disable(nic->netdev);
del_timer_sync(&nic->watchdog);
netif_carrier_off(nic->netdev);
#ifdef CONFIG_PM
pci_save_state(pdev);
if (nic->flags & (wol_magic | e100_asf(nic)))
#else
if (nic->flags & (wol_magic))
#endif
pci_enable_wake(pdev, pci_choose_state(pdev, state), 1);
else
/* disable PME */
pci_enable_wake(pdev, 0, 0);
if ((nic->flags & wol_magic) | e100_asf(nic)) {
pci_enable_wake(pdev, PCI_D3hot, 1);
pci_enable_wake(pdev, PCI_D3cold, 1);
} else {
pci_enable_wake(pdev, PCI_D3hot, 0);
pci_enable_wake(pdev, PCI_D3cold, 0);
}
pci_disable_device(pdev);
pci_set_power_state(pdev, pci_choose_state(pdev, state));
pci_set_power_state(pdev, PCI_D3hot);
return 0;
}
#ifdef CONFIG_PM
static int e100_resume(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
@ -2764,7 +2760,23 @@ static int e100_resume(struct pci_dev *pdev)
static void e100_shutdown(struct pci_dev *pdev)
{
e100_suspend(pdev, PMSG_SUSPEND);
struct net_device *netdev = pci_get_drvdata(pdev);
struct nic *nic = netdev_priv(netdev);
netif_poll_disable(nic->netdev);
del_timer_sync(&nic->watchdog);
netif_carrier_off(nic->netdev);
if ((nic->flags & wol_magic) | e100_asf(nic)) {
pci_enable_wake(pdev, PCI_D3hot, 1);
pci_enable_wake(pdev, PCI_D3cold, 1);
} else {
pci_enable_wake(pdev, PCI_D3hot, 0);
pci_enable_wake(pdev, PCI_D3cold, 0);
}
pci_disable_device(pdev);
pci_set_power_state(pdev, PCI_D3hot);
}
/* ------------------ PCI Error Recovery infrastructure -------------- */
@ -2848,9 +2860,9 @@ static struct pci_driver e100_driver = {
.id_table = e100_id_table,
.probe = e100_probe,
.remove = __devexit_p(e100_remove),
#ifdef CONFIG_PM
/* Power Management hooks */
.suspend = e100_suspend,
#ifdef CONFIG_PM
.resume = e100_resume,
#endif
.shutdown = e100_shutdown,