[PATCH] wireless: clean-up some "check return code" warnings

Clean-up some warnings from missing return code checks, mostly from
calling pci_enable_device during a PCI resume.
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/hostap/hostap_pci.c

@@ -425,8 +425,14 @@ static int prism2_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 static int prism2_pci_resume(struct pci_dev *pdev)
 {
 	struct net_device *dev = pci_get_drvdata(pdev);
+	int err;
 
-	pci_enable_device(pdev);
+	err = pci_enable_device(pdev);
+	if (err) {
+		printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
+		       dev->name);
+		return err;
+	}
 	pci_restore_state(pdev);
 	prism2_hw_config(dev, 0);
 	if (netif_running(dev)) {

drivers/net/wireless/ipw2100.c

@@ -6423,6 +6423,7 @@ static int ipw2100_resume(struct pci_dev *pci_dev)
 {
 	struct ipw2100_priv *priv = pci_get_drvdata(pci_dev);
 	struct net_device *dev = priv->net_dev;
+	int err;
 	u32 val;
 
 	if (IPW2100_PM_DISABLED)
@@ -6433,7 +6434,12 @@ static int ipw2100_resume(struct pci_dev *pci_dev)
 	IPW_DEBUG_INFO("%s: Coming out of suspend...\n", dev->name);
 
 	pci_set_power_state(pci_dev, PCI_D0);
-	pci_enable_device(pci_dev);
+	err = pci_enable_device(pci_dev);
+	if (err) {
+		printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
+		       dev->name);
+		return err;
+	}
 	pci_restore_state(pci_dev);
 
 	/*

drivers/net/wireless/ipw2200.c

@@ -11727,12 +11727,18 @@ static int ipw_pci_resume(struct pci_dev *pdev)
 {
 	struct ipw_priv *priv = pci_get_drvdata(pdev);
 	struct net_device *dev = priv->net_dev;
+	int err;
 	u32 val;
 
 	printk(KERN_INFO "%s: Coming out of suspend...\n", dev->name);
 
 	pci_set_power_state(pdev, PCI_D0);
-	pci_enable_device(pdev);
+	err = pci_enable_device(pdev);
+	if (err) {
+		printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
+		       dev->name);
+		return err;
+	}
 	pci_restore_state(pdev);
 
 	/*

drivers/net/wireless/orinoco_pci.h

@@ -60,7 +60,12 @@ static int orinoco_pci_resume(struct pci_dev *pdev)
 	int err;
 
 	pci_set_power_state(pdev, 0);
-	pci_enable_device(pdev);
+	err = pci_enable_device(pdev);
+	if (err) {
+		printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
+		       dev->name);
+		return err;
+	}
 	pci_restore_state(pdev);
 
 	err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED,

drivers/net/wireless/prism54/islpci_hotplug.c

@@ -170,14 +170,15 @@ prism54_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	pci_set_master(pdev);
 
 	/* enable MWI */
-	pci_set_mwi(pdev);
+	if (pci_set_mwi(pdev))
+		goto do_pci_release_regions;
 
 	/* setup the network device interface and its structure */
 	if (!(ndev = islpci_setup(pdev))) {
 		/* error configuring the driver as a network device */
 		printk(KERN_ERR "%s: could not configure network device\n",
 		       DRV_NAME);
-		goto do_pci_release_regions;
+		goto do_pci_clear_mwi;
 	}
 
 	priv = netdev_priv(ndev);
@@ -207,6 +208,8 @@ prism54_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	pci_set_drvdata(pdev, NULL);
 	free_netdev(ndev);
 	priv = NULL;
+      do_pci_clear_mwi:
+	pci_clear_mwi(pdev);
       do_pci_release_regions:
 	pci_release_regions(pdev);
       do_pci_disable_device:
@@ -254,6 +257,8 @@ prism54_remove(struct pci_dev *pdev)
 	free_netdev(ndev);
 	priv = NULL;
 
+	pci_clear_mwi(pdev);
+
 	pci_release_regions(pdev);
 
 	pci_disable_device(pdev);
@@ -287,12 +292,19 @@ prism54_resume(struct pci_dev *pdev)
 {
 	struct net_device *ndev = pci_get_drvdata(pdev);
 	islpci_private *priv = ndev ? netdev_priv(ndev) : NULL;
-	BUG_ON(!priv);
+	int err;
 
-	pci_enable_device(pdev);
+	BUG_ON(!priv);
 
 	printk(KERN_NOTICE "%s: got resume request\n", ndev->name);
 
+	err = pci_enable_device(pdev);
+	if (err) {
+		printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
+		       ndev->name);
+		return err;
+	}
+
 	pci_restore_state(pdev);
 
 	/* alright let's go into the PREBOOT state */