[PATCH] sky2: netconsole suspend/resume interaction

A couple of fixes that should prevent crashes when using netconsole and
suspend/resume. First, netconsole poll routine shouldn't run unless the
device is up; second, the NAPI poll should be disabled during suspend.

This is only an issue on sky2, because it has to have one NAPI poll
routine for both ports on dual port boards. Normal drivers use
netif_rx_schedule_prep and that checks for netif_running.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 97fe95666f3b8bbe0a660b7bdc2187f954de1fd8..fba1e4d4d83d053becf3da50e48577f7740f0c79 100644 (file)
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -2255,8 +2255,10 @@ static irqreturn_t sky2_intr(int irq, void *dev_id, struct pt_regs *regs)
 static void sky2_netpoll(struct net_device *dev)
 {
        struct sky2_port *sky2 = netdev_priv(dev);
+       struct net_device *dev0 = sky2->hw->dev[0];
 
-       sky2_intr(sky2->hw->pdev->irq, sky2->hw, NULL);
+       if (netif_running(dev) && __netif_rx_schedule_prep(dev0))
+               __netif_rx_schedule(dev0);
 }
 #endif
 
@@ -3446,6 +3448,7 @@ static int sky2_suspend(struct pci_dev *pdev, pm_message_t state)
 
                        sky2_down(dev);
                        netif_device_detach(dev);
+                       netif_poll_disable(dev);
                }
        }
 
@@ -3474,6 +3477,8 @@ static int sky2_resume(struct pci_dev *pdev)
                struct net_device *dev = hw->dev[i];
                if (dev && netif_running(dev)) {
                        netif_device_attach(dev);
+                       netif_poll_enable(dev);
+
                        err = sky2_up(dev);
                        if (err) {
                                printk(KERN_ERR PFX "%s: could not up: %d\n",