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path: root/drivers/pci/probe.c
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-rw-r--r--drivers/pci/probe.c68
1 files changed, 61 insertions, 7 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 04e74f4..7cc9e2f 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1522,19 +1522,21 @@ unsigned int __devinit pci_scan_child_bus(struct pci_bus *bus)
return max;
}
-struct pci_bus * pci_create_bus(struct device *parent,
- int bus, struct pci_ops *ops, void *sysdata)
+struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
+ struct pci_ops *ops, void *sysdata, struct list_head *resources)
{
- int error;
+ int error, i;
struct pci_bus *b, *b2;
struct device *dev;
+ struct pci_bus_resource *bus_res, *n;
+ struct resource *res;
b = pci_alloc_bus();
if (!b)
return NULL;
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
- if (!dev){
+ if (!dev) {
kfree(b);
return NULL;
}
@@ -1577,8 +1579,20 @@ struct pci_bus * pci_create_bus(struct device *parent,
pci_create_legacy_files(b);
b->number = b->secondary = bus;
- b->resource[0] = &ioport_resource;
- b->resource[1] = &iomem_resource;
+
+ /* Add initial resources to the bus */
+ list_for_each_entry_safe(bus_res, n, resources, list)
+ list_move_tail(&bus_res->list, &b->resources);
+
+ if (parent)
+ dev_info(parent, "PCI host bridge to bus %s\n", dev_name(&b->dev));
+ else
+ printk(KERN_INFO "PCI host bridge to bus %s\n", dev_name(&b->dev));
+
+ pci_bus_for_each_resource(b, res, i) {
+ if (res)
+ dev_info(&b->dev, "root bus resource %pR\n", res);
+ }
return b;
@@ -1594,18 +1608,58 @@ err_out:
return NULL;
}
+struct pci_bus * __devinit pci_scan_root_bus(struct device *parent, int bus,
+ struct pci_ops *ops, void *sysdata, struct list_head *resources)
+{
+ struct pci_bus *b;
+
+ b = pci_create_root_bus(parent, bus, ops, sysdata, resources);
+ if (!b)
+ return NULL;
+
+ b->subordinate = pci_scan_child_bus(b);
+ pci_bus_add_devices(b);
+ return b;
+}
+EXPORT_SYMBOL(pci_scan_root_bus);
+
+/* Deprecated; use pci_scan_root_bus() instead */
struct pci_bus * __devinit pci_scan_bus_parented(struct device *parent,
int bus, struct pci_ops *ops, void *sysdata)
{
+ LIST_HEAD(resources);
struct pci_bus *b;
- b = pci_create_bus(parent, bus, ops, sysdata);
+ pci_add_resource(&resources, &ioport_resource);
+ pci_add_resource(&resources, &iomem_resource);
+ b = pci_create_root_bus(parent, bus, ops, sysdata, &resources);
if (b)
b->subordinate = pci_scan_child_bus(b);
+ else
+ pci_free_resource_list(&resources);
return b;
}
EXPORT_SYMBOL(pci_scan_bus_parented);
+struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *ops,
+ void *sysdata)
+{
+ LIST_HEAD(resources);
+ struct pci_bus *b;
+
+ pci_add_resource(&resources, &ioport_resource);
+ pci_add_resource(&resources, &iomem_resource);
+ b = pci_create_root_bus(NULL, bus, ops, sysdata, &resources);
+ if (b) {
+ b->subordinate = pci_scan_child_bus(b);
+ pci_bus_add_devices(b);
+ } else {
+ pci_free_resource_list(&resources);
+ }
+ return b;
+}
+EXPORT_SYMBOL(pci_scan_bus);
+
#ifdef CONFIG_HOTPLUG
/**
* pci_rescan_bus - scan a PCI bus for devices.
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