x86: multi pci root bus with different io resource range, on 64-bit

[linux-2.6-omap-h63xx.git] / arch / x86 / pci / mmconfig_64.c

diff --git a/arch/x86/pci/mmconfig_64.c b/arch/x86/pci/mmconfig_64.c
index 9207fd49233c1f120f6bbbd3e4b7c87f77c671b3..a1994163c99dd328e3c542d1bc0f5dd246e583cf 100644 (file)
--- a/arch/x86/pci/mmconfig_64.c
+++ b/arch/x86/pci/mmconfig_64.c
@@ -127,7 +127,7 @@ static void __iomem * __init mcfg_ioremap(struct acpi_mcfg_allocation *cfg)
 int __init pci_mmcfg_arch_init(void)
 {
        int i;
-       pci_mmcfg_virt = kmalloc(sizeof(*pci_mmcfg_virt) *
+       pci_mmcfg_virt = kzalloc(sizeof(*pci_mmcfg_virt) *
                                 pci_mmcfg_config_num, GFP_KERNEL);
        if (pci_mmcfg_virt == NULL) {
                printk(KERN_ERR "PCI: Can not allocate memory for mmconfig structures\n");
@@ -141,9 +141,29 @@ int __init pci_mmcfg_arch_init(void)
                        printk(KERN_ERR "PCI: Cannot map mmconfig aperture for "
                                        "segment %d\n",
                                pci_mmcfg_config[i].pci_segment);
+                       pci_mmcfg_arch_free();
                        return 0;
                }
        }
        raw_pci_ext_ops = &pci_mmcfg;
        return 1;
 }
+
+void __init pci_mmcfg_arch_free(void)
+{
+       int i;
+
+       if (pci_mmcfg_virt == NULL)
+               return;
+
+       for (i = 0; i < pci_mmcfg_config_num; ++i) {
+               if (pci_mmcfg_virt[i].virt) {
+                       iounmap(pci_mmcfg_virt[i].virt);
+                       pci_mmcfg_virt[i].virt = NULL;
+                       pci_mmcfg_virt[i].cfg = NULL;
+               }
+       }
+
+       kfree(pci_mmcfg_virt);
+       pci_mmcfg_virt = NULL;
+}