x86/PCI: MMCONFIG: add pci_mmconfig_remove() to remove MMCONFIG region

This is only used internally now, but eventually will be used in the
hot-remove path to remove the MMCONFIG region associated with a host bridge.

Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 10 insertions, 6 deletions

diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c
index 2709aa81801d..392f8fe16955 100644
--- a/arch/x86/pci/mmconfig-shared.c
+++ b/arch/x86/pci/mmconfig-shared.c
@@ -27,17 +27,21 @@ static int __initdata pci_mmcfg_resources_inserted;
 
 LIST_HEAD(pci_mmcfg_list);
 
+static __init void pci_mmconfig_remove(struct pci_mmcfg_region *cfg)
+{
+        if (cfg->res.parent)
+                release_resource(&cfg->res);
+        list_del(&cfg->list);
+        kfree(cfg);
+}
+
 static __init void free_all_mmcfg(void)
 {
         struct pci_mmcfg_region *cfg, *tmp;
 
         pci_mmcfg_arch_free();
-        list_for_each_entry_safe(cfg, tmp, &pci_mmcfg_list, list) {
-                if (cfg->res.parent)
-                        release_resource(&cfg->res);
-                list_del(&cfg->list);
-                kfree(cfg);
-        }
+        list_for_each_entry_safe(cfg, tmp, &pci_mmcfg_list, list)
+                pci_mmconfig_remove(cfg);
 }
 
 static __init void list_add_sorted(struct pci_mmcfg_region *new)