diff options
| -rw-r--r-- | arch/x86/pci/acpi.c | 63 |
1 files changed, 51 insertions, 12 deletions
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c index a858c1d9af5..2b74a161d21 100644 --- a/arch/x86/pci/acpi.c +++ b/arch/x86/pci/acpi.c @@ -315,11 +315,40 @@ static void add_resources(struct pci_root_info *info, } } -static void free_pci_root_info(struct pci_root_info *info) +static void free_pci_root_info_res(struct pci_root_info *info) { kfree(info->name); kfree(info->res); - memset(info, 0, sizeof(struct pci_root_info)); + info->res = NULL; + info->res_num = 0; +} + +static void __release_pci_root_info(struct pci_root_info *info) +{ + int i; + struct resource *res; + + for (i = 0; i < info->res_num; i++) { + res = &info->res[i]; + + if (!res->parent) + continue; + + if (!(res->flags & (IORESOURCE_MEM | IORESOURCE_IO))) + continue; + + release_resource(res); + } + + free_pci_root_info_res(info); + + kfree(info); +} +static void release_pci_root_info(struct pci_host_bridge *bridge) +{ + struct pci_root_info *info = bridge->release_data; + + __release_pci_root_info(info); } static void @@ -352,7 +381,7 @@ probe_pci_root_info(struct pci_root_info *info, struct acpi_device *device, struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_pci_root *root) { struct acpi_device *device = root->device; - struct pci_root_info info; + struct pci_root_info *info = NULL; int domain = root->segment; int busnum = root->secondary.start; LIST_HEAD(resources); @@ -397,7 +426,13 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_pci_root *root) sd->domain = domain; sd->node = node; - memset(&info, 0, sizeof(struct pci_root_info)); + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) { + kfree(sd); + printk(KERN_WARNING "pci_bus %04x:%02x: " + "ignored (out of memory)\n", domain, busnum); + return NULL; + } /* * Maybe the desired pci bus has been already scanned. In such case * it is unnecessary to scan the pci bus with the given domain,busnum. @@ -409,29 +444,33 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_pci_root *root) * be replaced by sd. */ memcpy(bus->sysdata, sd, sizeof(*sd)); + kfree(info); kfree(sd); } else { - probe_pci_root_info(&info, device, busnum, domain); + probe_pci_root_info(info, device, busnum, domain); /* * _CRS with no apertures is normal, so only fall back to * defaults or native bridge info if we're ignoring _CRS. */ if (pci_use_crs) - add_resources(&info, &resources); + add_resources(info, &resources); else { - free_pci_root_info(&info); + free_pci_root_info_res(info); x86_pci_root_bus_resources(busnum, &resources); } + bus = pci_create_root_bus(NULL, busnum, &pci_root_ops, sd, &resources); - if (bus) + if (bus) { bus->subordinate = pci_scan_child_bus(bus); - else + pci_set_host_bridge_release( + to_pci_host_bridge(bus->bridge), + release_pci_root_info, info); + } else { pci_free_resource_list(&resources); - - if (!bus && pci_use_crs) - free_pci_root_info(&info); + __release_pci_root_info(info); + } } /* After the PCI-E bus has been walked and all devices discovered, |