Merge tag 'pci-v3.10-fixes-3' of git://git.kernel.org/pub/scm/linux/k…

…ernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "This fixes a crash when booting a 32-bit kernel via the EFI boot stub.

  PCI ROM from EFI
      x86/PCI: Map PCI setup data with ioremap() so it can be in highmem"

* tag 'pci-v3.10-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  x86/PCI: Map PCI setup data with ioremap() so it can be in highmem

arch/x86/pci/common.c

@@ -628,7 +628,9 @@ int pcibios_add_device(struct pci_dev *dev)
 
 	pa_data = boot_params.hdr.setup_data;
 	while (pa_data) {
-		data = phys_to_virt(pa_data);
+		data = ioremap(pa_data, sizeof(*rom));
+		if (!data)
+			return -ENOMEM;
 
 		if (data->type == SETUP_PCI) {
 			rom = (struct pci_setup_rom *)data;
@@ -645,6 +647,7 @@ int pcibios_add_device(struct pci_dev *dev)
 			}
 		}
 		pa_data = data->next;
+		iounmap(data);
 	}
 	return 0;
 }