alx: Use pci_(request|release)_mem_regions

Now that we do have pci_request_mem_regions() and pci_release_mem_regions()
at hand, use it in the ethernet drivers.
Suggested-by: NChristoph Hellwig <hch@infradead.org>
Signed-off-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
CC: Jay Cliburn <jcliburn@gmail.com>
CC: Chris Snook <chris.snook@gmail.com>
CC: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/atheros/alx/main.c

@@ -1284,7 +1284,7 @@ static int alx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	struct alx_priv *alx;
 	struct alx_hw *hw;
 	bool phy_configured;
-	int bars, err;
+	int err;
 
 	err = pci_enable_device_mem(pdev);
 	if (err)
@@ -1304,11 +1304,10 @@ static int alx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 		}
 	}
 
-	bars = pci_select_bars(pdev, IORESOURCE_MEM);
-	err = pci_request_selected_regions(pdev, bars, alx_drv_name);
+	err = pci_request_mem_regions(pdev, alx_drv_name);
 	if (err) {
 		dev_err(&pdev->dev,
-			"pci_request_selected_regions failed(bars:%d)\n", bars);
+			"pci_request_mem_regions failed\n");
 		goto out_pci_disable;
 	}
 
@@ -1434,7 +1433,7 @@ static int alx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 out_free_netdev:
 	free_netdev(netdev);
 out_pci_release:
-	pci_release_selected_regions(pdev, bars);
+	pci_release_mem_regions(pdev);
 out_pci_disable:
 	pci_disable_device(pdev);
 	return err;
@@ -1453,8 +1452,7 @@ static void alx_remove(struct pci_dev *pdev)
 
 	unregister_netdev(alx->dev);
 	iounmap(hw->hw_addr);
-	pci_release_selected_regions(pdev,
-				     pci_select_bars(pdev, IORESOURCE_MEM));
+	pci_release_mem_regions(pdev);
 
 	pci_disable_pcie_error_reporting(pdev);
 	pci_disable_device(pdev);