[PATHC] e100: fix reboot -f with netconsole enabled
From: Auke Kok <hidden>
Date: 2006-10-14 17:01:46
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
e100: FIX: fix netconsole fast reboot attached to e100 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 <redacted> Signed-off-by: Andrew Morton <redacted> --- drivers/net/e100.c | 50 ++++++++++++++++++++++++++----------------- 1 file changed, 31 insertions(+), 19 deletions(-)
diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index 27d5d2f..a3a08a5 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c@@ -2039,7 +2039,6 @@ static int e100_change_mtu(struct net_de 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 } } +#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 @@ #endif /* CONFIG_PM */ 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,