diff options
Diffstat (limited to 'arch/x86/pci/mmconfig_64.c')
| -rw-r--r-- | arch/x86/pci/mmconfig_64.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/arch/x86/pci/mmconfig_64.c b/arch/x86/pci/mmconfig_64.c index 9207fd49233..a1994163c99 100644 --- 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; +} |