diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/host-bridge.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c index 28b24a5375d..c49a1c482cf 100644 --- a/drivers/pci/host-bridge.c +++ b/drivers/pci/host-bridge.c @@ -16,15 +16,22 @@ void add_to_pci_host_bridges(struct pci_host_bridge *bridge) list_add_tail(&bridge->list, &pci_host_bridges); } -static struct pci_host_bridge *pci_host_bridge(struct pci_dev *dev) +static struct pci_bus *find_pci_root_bus(struct pci_dev *dev) { struct pci_bus *bus; - struct pci_host_bridge *bridge; bus = dev->bus; while (bus->parent) bus = bus->parent; + return bus; +} + +static struct pci_host_bridge *find_pci_host_bridge(struct pci_dev *dev) +{ + struct pci_bus *bus = find_pci_root_bus(dev); + struct pci_host_bridge *bridge; + list_for_each_entry(bridge, &pci_host_bridges, list) { if (bridge->bus == bus) return bridge; @@ -41,7 +48,7 @@ static bool resource_contains(struct resource *res1, struct resource *res2) void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, struct resource *res) { - struct pci_host_bridge *bridge = pci_host_bridge(dev); + struct pci_host_bridge *bridge = find_pci_host_bridge(dev); struct pci_host_bridge_window *window; resource_size_t offset = 0; @@ -69,12 +76,13 @@ static bool region_contains(struct pci_bus_region *region1, void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, struct pci_bus_region *region) { - struct pci_host_bridge *bridge = pci_host_bridge(dev); + struct pci_host_bridge *bridge = find_pci_host_bridge(dev); struct pci_host_bridge_window *window; - struct pci_bus_region bus_region; resource_size_t offset = 0; list_for_each_entry(window, &bridge->windows, list) { + struct pci_bus_region bus_region; + if (resource_type(res) != resource_type(window->res)) continue; |