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authorAuke Kok <auke-jan.h.kok@intel.com>2006-10-19 23:28:12 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-20 10:26:35 -0700
commite8e82b76e0312827f5ae04b573a05b02854a447e (patch)
tree3a6942b8abade23aafc489b84ca66decad7d3ff4
parentce9e3d9953c8cb67001719b5516da2928e956be4 (diff)
[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>
-rw-r--r--drivers/net/e100.c50
1 files changed, 31 insertions, 19 deletions
diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index 27d5d2f0253..a3a08a5dd18 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c
@@ -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,