pci: use pci_ioremap_bar() in drivers/edac

Use the newly introduced pci_ioremap_bar() function in drivers/edac.
pci_ioremap_bar() just takes a pci device and a bar number, with the goal
of making it really hard to get wrong, while also having a central place
to stick sanity checks.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/edac/i82875p_edac.c

@@ -311,9 +311,7 @@ static int i82875p_setup_overfl_dev(struct pci_dev *pdev,
 	}
 
 	/* cache is irrelevant for PCI bus reads/writes */
-	window = ioremap_nocache(pci_resource_start(dev, 0),
-				 pci_resource_len(dev, 0));
-
+	window = pci_ioremap_bar(dev, 0);
 	if (window == NULL) {
 		i82875p_printk(KERN_ERR, "%s(): Failed to ioremap bar6\n",
 			__func__);