Free irq in ->suspend and request irq in ->resume to be compliant with
the latest PM request (Documentation/power/pci.txt).

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
--
diff -urp ipw2100-1.1.2/ipw2100.c ipw2100-1.1.2-pci_link/ipw2100.c
--- ipw2100-1.1.2/ipw2100.c	2005-07-14 02:59:37.000000000 +0800
+++ ipw2100-1.1.2-pci_link/ipw2100.c	2005-08-09 15:58:41.000000000 +0800
@@ -6447,6 +6447,7 @@ static int ipw2100_suspend(struct pci_de
 		/* Take down the device; powers it off, etc. */
 		ipw2100_down(priv);
 	}
+	free_irq(pci_dev->irq, dev);
 
 	/* Remove the PRESENT state of the device */
 	netif_device_detach(dev);
@@ -6473,6 +6474,7 @@ static int ipw2100_resume(struct pci_dev
 	struct ipw2100_priv *priv = pci_get_drvdata(pci_dev);
 	struct net_device *dev = priv->net_dev;
 	u32 val;
+	int err = 0;
 
 	if (IPW2100_PM_DISABLED)
 		return 0;
@@ -6488,6 +6490,7 @@ static int ipw2100_resume(struct pci_dev
 	pci_set_power_state(pci_dev, PCI_D0);
 #endif
 	pci_enable_device(pci_dev);
+
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
 	pci_restore_state(pci_dev,priv->pm_state);
 #else
@@ -6504,6 +6507,14 @@ static int ipw2100_resume(struct pci_dev
 	if ((val & 0x0000ff00) != 0)
 		pci_write_config_dword(pci_dev, 0x40, val & 0xffff00ff);
 
+	err = request_irq(pci_dev->irq,
+			  ipw2100_interrupt, SA_SHIRQ, dev->name, priv);
+	if (err) {
+		printk(KERN_WARNING DRV_NAME
+		       "Error calling request_irq: %d.\n", pci_dev->irq);
+		goto exit;
+	}
+
 	/* Set the device back into the PRESENT state; this will also wake
 	 * the queue of needed */
 	netif_device_attach(dev);
@@ -6512,9 +6523,9 @@ static int ipw2100_resume(struct pci_dev
         if (!(priv->status & STATUS_RF_KILL_SW))
                 ipw2100_up(priv, 0);
 
+exit:
 	up(&priv->action_sem);
-
-	return 0;
+	return err;
 }
 #endif